Brett Hoyt – NOAA Teacher at Sea Blog

October 25, 2006April 1, 2021

Brett Hoyt, October 25, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 25, 2006

Weather Data from Bridge
Visibility: 12nm (nautical miles)
Wind direction: 150º
Wind speed: 5 knots
Sea wave height: 1-2ft
Swell wave height: 4-6 ft
Sea level pressure: 1017.1 millibars
Sea temperature: 16.7ºC or ºF
Air temperature: 17.9ºC or ºF
Cloud type: Stratus

Reggie Glover – Engine Utility Man (“Oilier”) helping keep the ship running smooth. Thanks Reggie!

The Crew

For the past 3 weeks we have been highlighting the scientists and their work. The other unsung heroes of this cruise are the ship’s crew. These tireless workers work 7 days a week and are on call 24 hours a day. They are up before dawn and go to bed well after sunset. They feed us three square meals a day (they are excellent chefs) and provide us even with the water we drink and bath with. Without our crew the research does not happen. For this we thank you.

Being a crewmember on a research vessel such as the RONALD BROWN has many hardships. You can’t go to the movies (they show two every night—not always your choice but you can request a movie to be played) or head to the mall (they do have a ship’s store—by the way I’ve seen bigger closets), but it’s our mall, and for this Dave, we thank you for running it. You can’t go for a walk in the park or even stroll down a neighborhood street. Your work place is also your home and you can’t leave either. But ………………for all these sacrifices how many of you can say you have really seen the world? For most of us, our “world” may only be the country we live in or perhaps the neighborhood we played in as a child. To you I ask, have you ever seen the sunset in Fiji or the glaciers in the Straits of Magellan? Have you ever visited a land that has not seen any rainfall in over 150 years? Have you ever gazed upon the heads of Easter Island or experienced 45ft waves in the Bearing Sea? If not, then you have not seen the world. It is because of this unique attraction for the world and all that is in it, that many people choose the life of a sailor.

Any one like big diesel engines? Jim Reed inspects the heart of the ship. The RON BROWN has six of these huge diesel engines connected to very large electric generators that in turn feed enough electricity to power the two 3000 horsepower engines that turn the propellers. — Any one like big diesel engines? Jim Reed inspects the heart of the ship, which has six of these huge diesel engines connected to very large electric generators that feed enough electricity to power the two engines that turn the propellers.

Today we will visit with Reggie Glover on board the RONALD H. BROWN. Reggie is a friendly, always there with a smile, genuinely kind man of 34 years of age. He has been a seaman for the past 3 years and has served on numerous ships. He got his start washing dishes for the Military Sealift Command. He was a civilian who worked on ships that supplied U.S. Naval ships. In only 2 and a half years he has worked his way up to “wiper.” Upon leaving the Sealift Command and joining NOAA, he changed jobs to become an “Engine Utility Man.” His past jobs have included truck driver, hotel employee, and fast food worker. When I asked Reggie why he decided to go to sea he replied, “College isn’t for everyone” and his career at sea provided an excellent opportunity to achieve financial freedom. “Money is good, there is tons of overtime, you don’t have to pay rent, and meals are provided. Your paycheck is all yours to save or to spend.”

Reggie has not always had it “easy.” Just before going to sea he was temporarily homeless. The sea provided a new career and a fresh start. When I asked Reggie what message he wanted to tell students he replied, “Come out to sea with a goal in mind, stick with it, and enjoy the feeling of accomplishment. If your life isn’t going the way you want, perhaps a job at sea would be an alternative to jail, homelessness, or even college.” Reggie goes on to say that joining NOAA’s workforce provides many opportunities to advance your skills and education. NOAA has sent Reggie to Engine Utility School and Refrigeration School and he is planning on taking welding school this fall. He is currently working towards his 3AE (third assistant engineer).

One of the benefits he has enjoyed the most has been the free travel in seeing the world and meeting different people in it. After visiting with Reggie I can sense he has his goals and will achieve them through his persistence and dedication to a job well done.

If you like to know more about a career at sea, check out the NOAA Fleet and Marine operations website, Automated commerce employment, and Vessel employment opportunities.

Please contact the Marine Operations Center – Atlantic at (757) 441-6206, or Marine Operations Center – Pacific at (206) 553-4548, if you have any questions.

The Teacher

This is my final log and I would like to thank all those folks at NOAA who saw fit to send me half way around the world for the journey of a lifetime and a chance to participate in one of the most worthwhile projects any teacher could hope to imagine. I would also like to thank Dr. Bob Weller and all the crew from Woods Hole who took time to answer my questions and make me feel like one of the team. (Love to scrape those barnacles!) I would like to thank the captain and his crew for keeping us safe and making me feel very much at home 5,000miles from home. And, I would like to personally thank Lt. (JG) Jackie Almeida for her input and edits on my Teacher at Sea logs and for her help in making my job easier. If you are a teacher and would like the experience of a lifetime, go to the Teacher at Sea website and apply today.

October 24, 2006April 1, 2021

Brett Hoyt, October 24, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 24, 2006

Data from Bridge

Visibility: 12nm (nautical miles)
Wind direction: 140º
Wind speed: 4 knots
Sea wave height: 0-1ft
Swell wave height: 6-8 ft
Sea level pressure: 1018.5 millibars
Sea temperature: 18.1ºC or 64 ºF
Air temperature: 18.7ºC or 65 ºF
Cloud type: stratus

Deployment of the new tsunami buoy began at 6am on October 23. The scientists deployed the buoy first and then plan to deploy the Bottom Pressure Recorder (BPR). The reason for this is that the BPR must be located close enough to the buoy for the acoustic communication from the BPR to reach the surface buoy. As there are only a few instruments from the Woods Hole Oceanographic Institution on the buoy, this deployment process only took a few hours instead of most of the day. They plan on letting the buoy settle for many hours before they deploy the BPR. One of the challenges for the tsunami buoy is that unlike the Stratus 7 buoy which had a “watch circle” (the distance the buoy could wander) of over 3 miles, the tsunami buoy has a watch circle of no more than 1,500 meters. This difference is that you don’t want the buoy wandering out of range of the Bottom Pressure Recorder transmitter. To achieve this, the scientists must make the mooring line exactly the right length. The day before they deployed the buoy the scientists measured the contours of the ocean floor and knew precisely how deep the water was. At the last minute, the scientists from the Chilean Navy cut and spliced a piece of mooring line to exactly the right length. (See photo)

The Scientists

Here a scientist from the Chilean Navy is seen splicing in an eye into the line after it was cut to length. This process ensures that the buoy stays in the right location and does not wander too far.

The Machine

The Chilean Government's tsunami buoy on station in the South Pacific. This is only one half of the warning equation. — The Chilean Government’s tsunami buoy in the South Pacific. This is only half of the warning equation.

The Bottom Pressure Recorder (BPR) with its anchor attached.

The Experiment

There was no experiment.

Classroom Activities

There is no classroom activity, as creating your own tsunami in the classroom would be way too messy.

October 22, 2006April 1, 2021

Brett Hoyt, October 22, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 22, 2006

Jeff Lord using an acoustic transmitter to talk to the acoustic release. This machine also tells the scientists the range to the release that helps them in finding it.

Data from Bridge
Visibility: 12nm (nautical miles)
Wind direction: 130º
Wind speed: 19 knots
Sea wave height: 4-6ft
Swell wave height: 5-7 ft
Sea level pressure: 1019.7 millibars
Sea temperature: 17.3ºC or 63ºF
Air temperature: 18.0ºC or 64ºF
Cloud type: cumulus, stratocumulus, and stratus

Note:

All day on the 21^st was spent traveling to the Chilean tsunami buoy approximately 300 miles off the coast of Chile. During this time, the Woods Hole group was busy retrieving data from their instruments from Stratus 6. Many of the instruments collect data all year long and store it on flash memory cards. When recovered one year later, this data is then downloaded onto computers for later analysis. We arrived late in the day on October 22 at the tsunami site and immediately started the process of recovering the old buoy. As you can see, scientists work day and night to get the job done. I really have never seen a group of harder working people.

Jorge Araya and Alvaro Vera, members of the Chilean Navy, looking for the yellow glass balls which were released over an hour ago and take that long to reach the surface. Work vests were required but not hard hats for this part of the operation. Both have over 12 years with the Chilean Navy.

The Machine

The glass balls are attached to the Bottom Pressure Recorder, or BPR, and float to the surface leaving the anchor on the bottom of the ocean.

Jorge Gaete, a civilian contractor for the Chilean Navy for the past 2 years, helps with the deployment of the tsunami buoy.

Capturing the yellow flotation balls that have brought the BPR to the surface for recovery.

The second part of the tsunami warning system is the recovery of the buoy. This buoy receives the signal from the BPR and quickly transmits the warning via satellite to the Chilean authorities who in turn warn the public. This recovery was done at night. Without the vast array of sensors found on the Stratus 7 buoy, this recovery progressed quickly and was completed within 30 minutes.

Hooking lines to the tsunami buoy for a quick recovery.

The Experiment

There is no experiment today; however, I will try to explain how the system works. When a tsunami is triggered by an underwater earthquake the BPR detects the increase in pressure on the bottom of the ocean due to the increase in the height of the water column above the sensor. When I asked Alvaro how this worked when sea swell was 6-7 ft at times and waves could reach a height of 45ft he explained that the pressure is sharp and abrupt. This is indicated by a very short wave (period) of energy passing through the open ocean. In open ocean the height of a huge tsunami wave is so short a ship would hardly know one has passed by. It is only when this wave heads into shallow water that the wave becomes deadly.

The BPR immediately after recovery, without its anchor that remains on the bottom of the ocean.

Classroom Activities

Please share with your students the DART tsunami warning system.

My next log will cover the deployment of a new warning system.

October 19, 2006April 1, 2021

Brett Hoyt, October 19, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 19, 2006

Dan Wolfe, senior scientist at NOAA, at his workstation on board the research vessel the RONALD H. BROWN. — Dan Wolfe, senior scientist at NOAA, at his workstation on board

Weather from Bridge
Visibility: 12nm(nautical miles)
Wind direction: 130º
Wind speed: 20 knots
Sea wave height: 5-7ft
Swell wave height: 3-4 ft
Sea level pressure: 1020.4 millibars
Sea temperature: 19.4ºC or 66 ºF
Air temperature: 19.2ºC or 66ºF
Cloud type: cumulus, stratocumulus

The Scientists

Today we will be interviewing Dan Wolfe, a senior meteorologist for the National Oceanic and Atmospheric Administration—NOAA for short. Standing an imposing 6’3”, it seemed only fitting that our next scientist should be studying the heavens. Mr. Wolfe is a 30-year veteran of NOAA and has been a scientist for the past 31 years. Mr. Wolfe entered the Coast Guard in 1969 immediately after graduating high school. He was initially assigned to the Coast Guard icebreaker “Glacier” transferring to the oceanographic unit where he staged scientific experiments. He traveled to the Arctic and it was there that he discovered his soon to be life long passion for the atmosphere and all that is in it. Mr. Wolfe was a trained scuba diver while stationed on the Glacier. After leaving the Coast Guard he attended Metropolitan State College where he earned his degree in meteorology. He has the distinction of being the first student to graduate in meteorology at this college. It was while at Metropolitan College that Mr. Wolfe became a coop student working for NOAA. After earning his degree he went to work for NOAA as a meteorologist where for the next 30 years he has become one if its leading atmospheric scientists. After seven years on the job he decided that he wanted to know more and enrolled at Colorado State University where he earned his masters degree.

This is a radiosonde, which measures relative humidity, temperature, barometric pressure, and winds as it passes through the atmosphere and radios its data back to the scientist. — This is a radiosonde, which measures relative humidity, temperature, barometric pressure, and winds as it passes through the atmosphere and radios its data back

Mr. Wolfe is one of the few individuals who has worked in BOTH the Arctic (North) and the Antarctic (South) (not just Antarctica but actually at the South Pole). His work has taken him to the depths of the Grand Canyon and to the Arctic more times than he cares to remember.

One of his more exciting job assignments with NOAA is managing a 1,000-ft research tower just off of I25 north of Denver Co. When I asked Mr. Wolfe what message he would like to give to upcoming scientists he replied, “Kids should seek out paid/or unpaid internships while in high school. Look for internships within your community in careers that you think you might like. This gives you the opportunity to try a job before investing money and time in college in a future you may not enjoy. If you try a job and discover you don’t like it, try something else until you find something you do like. Be sure to give the job a chance though.”

NOAA Teacher at Sea, Mr. Hoyt, releasing a radiosonde off the aft deck — NOAA Teacher at Sea, Mr. Hoyt, releasing a radiosonde

The Machine

One important scientific instrument used by a meteorologist is the radiosonde (pronounced radio sond). This device measures relative humidity, temperature, barometric pressure, and winds by utilizing the global positioning satellite system. The radiosonde is battery activated then secured to a large helium balloon. It is then released where it begins its ascent into the upper atmosphere, measuring humidity, temperature, and pressure sending these data back to the scientist via a digital radio frequency. Depending on the balloon used, these radiosondes can obtain heights in excess of 6 miles. The atmospheric data collected on this cruise will be shared with other scientists to help improve global weather computer models.

The Experiment

There is no experiment as these data are transmitted via satellite link immediately after the flight is finished to the National Center for Environmental Prediction to be fed into their continuously running forecast models.

Classroom Activities

Elememtary K-6:

Ask the students, “What is weather?” “Why is it important to predict the weather?” Have the students take a piece of drawing paper and divide it into four equal parts. In each part have the students draw and color four different types of weather common to where they live. Example could be sunny, rainy, partly cloudy, and snow.

Middle School:

Why do we use calibrated thermometers to measure air temperature? Ask students to answer on paper whether the classroom is hot, warm, cool, or cold and to estimate the actual temperature of the room. Then compare the students’ answers to the actual temperature. Then discuss the importance of a “standard.” Without this “standard” scientists around the world would have no way of communicating what the atmosphere is doing.

Please examine the High School for more activities

High School:

Everyday we hear on the radio, television, or newspaper that it will be sunny, partly cloudy, partly sunny, etc. How do meteorologist arrive at this? Today we will learn how.

Divide the sky into eight parts. Examine each part and count how many squares have clouds. There is no hard and fast rule on what to do with partially filled boxes

No squares having clouds-Clear or Sunny

One to two squares having clouds-Mostly Clear or Mostly Sunny

Three or four squares having clouds-Partly Cloudy or Partly Sunny

Five, Six, or Seven squares having clouds-Mostly Cloudy

Eight squares having clouds-Overcast or Cloudy Take the sky photo below and print it out. Draw a grid like the one above on top of the sky photo. Have the students write down what they think the day is. Then compare the student’s answers. Is this an exact science?

Have your teacher take photos of the weather in your area and do your own.

October 18, 2006April 1, 2021

Brett Hoyt, October 18, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 18, 2006

Weather Data from Bridge October 18
Visibility: 12nm(nautical miles)
Wind direction: 120º
True Wind speed: 10 knots
Sea wave height: 2-4ft
Swell wave height: 3-5 ft
Sea level pressure: 1021.6 millibars
Sea temperature: 19.3ºC or 67ºF
Air temperature: 22.5ºC or 72ºF
Cloud type: cumulus, stratocumulus

We are going to use a different format for today because it is recovery day!

On October 16^th we deployed the Stratus 7 buoy. The second part of this cruise is the recovery of the Stratus 6 buoy that was deployed approximately one year ago. To ensure a continuous record, a new buoy is installed at the same time the old one is recovered. Today, October 18^th, is the recovery of the Stratus 6 buoy. Please compare and contrast the photos of October 16^th (Deployment) with that of October 18^th (Recovery).

The Stratus 6 Buoy one year after it was deployed. The nearest Land is 600 miles to the east. These birds are feeding off the marine life this buoy collects in the waters around the mooring.

Recovering of the Stratus 6. Can you spot the Scotsman? Hint: He’s the one in the cowboy hard hat.

Instruments waiting deployment for Stratus 7.

Stratus 6 instruments one year after deployment covered in barnacles. What would two years of deployment look like?

Gooseneck barnacles from the Stratus 6 buoy.

Damage to a current meter caused by fisherman’s gear. Of the 8 meters, 6 were fouled. Here we have entanglement of the current metering fans by fishermen’s lights. They use these lights on their lines to attract fish to their hooks at night. Once the entanglement occurs data cannot continue to be gathered.

NOAA Teacher at Sea, Mr. Hoyt, scraping barnacles off one of the sensors from Stratus 6. “ I’ve got to talk to my travel agent.”

Remember the glass balls from Stratus 7? Here are the glass balls from Stratus 6. It took them over one hour to reach the surface after the acoustic release was activated. They are not in the nice neat line as we had in deployment.

The acoustic release, one year after being sent 13,000 ft to the bottom of the ocean. Scientists sent a signal to this release to let go of one side of the chain. Should one release fail, they could trigger the other release.

Dr. Weller, leading by example, cleaning the equipment free of barnacles. Remember in an earlier posting when he stated he was a “hands on scientist”?

October 16, 2006April 1, 2021

Brett Hoyt, October 16, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 16, 2006

Weather Data from Bridge
Visibility: 12nm (nautical miles)
Wind direction: 060º
Wind speed: 10 knots
Sea wave height: 3-4ft
Swell wave height: 5-6 ft
Sea level pressure: 1020.8 millibars
Sea temperature: 19.3ºC or 66ºF
Air temperature: 19.1ºC or 66ºF
Cloud type: cumulus, stratocumulus

We are going to use a different format for today because it is Deployment Day! Today was deployment day for the entire crew and the best way to tell this story is in pictures. So let’s begin.

Before scientists deploy a buoy they must measure how deep the ocean is. This is the actual bathymetric (bottom measure) read out of the target site for Stratus 7.

This is the map of the bottom of the ocean. Please note the scale in meters on the left as well as + marks the spot. Can you see the pattern the boat is making? — This is the map of the bottom of the ocean. Please note the scale in meters on the left
as well as + marks the spot. Can you see the pattern the boat is making?

With over 4,400 m (13,000 ft) of cable it takes a full crew to stage the cable.

Jeff Lord making final preparations for the dozens of instruments to be deployed beneath the buoy. What an amazing man. “What would we do without you?”

Lifting the Stratus 7 Buoy off the ship. This process takes the cooperation of about a dozen individuals to do.

Stratus 7 off the side ready to have the instruments deployed under it.

Jeff attaching a current meter (Invented and patented by Dr. Weller) to the bottom of the buoy. It weights about 160lb and there are eight of them. Please note the safety equipment Jeff is wearing. SAFETY FIRST!

Dr. Weller operating the winch (it has over 2.5 miles of cable on it!) and supervising the deployment operation.

Attaching glass balls (they are located inside the yellow plastic housings which protect them from chipping), which are at the very end of the 13,000 feet of cable just above the acoustic release, which in turn attaches to the anchor. These hollow glass balls can withstand pressures in excess of 5,300 lb/sqin.

This is the acoustic release (actually two) that attaches the buoy mooring line to the anchor. One year from now an acoustic signal will be sent down 13,000ft to trigger the chain to be released. The reason they use two is that if one fails the release will still take place and the mooring line will begin its ascent to the surface with the help of the glass balls.

Everything is just moments before release. This anchor weighs 9,000lbs and will take over 45 minutes to fall to the bottom of the ocean. All the instruments are attached, glass balls secured, and the acoustic release in place. Drum roll please…………………. The anchor is deployed!

Stratus 7 on station in the South Pacific Ocean helping scientist understand this big blue planet we call home.

October 15, 2006April 1, 2021

Brett Hoyt, October 15, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 15, 2006

Dr. Robert Weller sitting on the aft deck

Weather Data from Bridge
Visibility: 12nm(nautical miles)
Wind direction: 110º
Wind speed: 11 knots
Sea wave height: 2-3 ft
Swell wave height: 3-5 ft
Sea level pressure: 1016.8 millibars
Sea temperature: 18.6ºC or 65 ºF
Air temperature: 18.2ºC or 64ºF
Cloud type: cumulus, stratocumulus

The Scientists

Today we will visit with Dr. Robert (Bob) Weller. Dr. Weller is the lead scientist for this scientific cruise and upon whose shoulders the success or failure of this expedition rests. Dr. Weller is an easy going, soft-spoken, easy to approach, modest, and very intense man with a passion for understanding the climate of the earth and all the processes within it. Many times scientist possess a great mind for academic excellence yet they fail at relating to people. Dr. Weller is the exception, possessing a brilliant mind, keen insight and intuition, and superb people management skills. It is exactly these qualities that have enabled him to lead such important and ground breaking research on climate and climate studies He understands that the success of a cruise depends on getting people (sometimes of various nationalities, on our cruise five) to work together to accomplish great things.

The Stratus 7 Buoy on station in the South Pacific Ocean just after being deployed from the ship — The Stratus 7 Buoy on station in the South Pacific just after being deployed

Dr. Weller began at an early age to feel the pull of science. He entered college initially to be a biochemist but something happened. In the middle of college he accepted a job with an oceanographer and from that time on he knew that a new career was in order. He graduated in 1972 with a degree in engineering and applied physics. He continued on and five years later in 1978 earned his doctoral degree in oceanography.

Upon earning his doctoral degree he accepted a position working at the prestigious Woods Hole Oceanographic Institution. He has been there ever since. How many people do you know who have stayed at the same job for 28 years! Dr. Weller finds himself at sea 2-3 months out of the year. He is a self-described scientist who likes to do things “hand on” (he’s not afraid to get dirty–please see the photo of him on deck and in his hard hat). When I asked him how long he has been a lead scientist he modestly replied” I don’t know if I’m there yet.” When I asked him what one message he would like to send to you future scientists he stated “ Kids and future scientists should be less concerned about outer space and more concerned about the planet we currently live on”. He wants kids to think about the things you can do about the temperature of the oceans and the role they play in the wellbeing of our planet we call home.

The Machine

Today we will examine the reason we all went to sea, the Stratus 7 Buoy. This buoy sends real time data from a fixed location off the coast of Chile. The buoy system maintained by the Woods Hole Oceanographic Institution (WHOI) out of Woods Hole Massachusetts plays an extremely critical role in understanding weather patterns that have worldwide implications. These buoys are highly sophisticated weather and climate data-gathering stations. The data collected from these stations is used to check the accuracy of powerful computer simulations that are used to predict climate change.

The Stratus 7 buoy replaces the aging Stratus 6 buoy that has been on station for over a year. There has been a Stratus buoy in this location since 2000. Dr. Weller stated that in years past buoys would not be on station for years at a time but rather for days at a time. Most did not exceed 40 days. Through trial and error, research and innovation, the life at sea for a buoy has been extended into the years. Concerned about waste and pollution in the oceans, most buoys are serviced, refitted, and given a new life year after year. Some might wonder about the cost, sometimes in excess of $1million dollars, of the buoy programs. The economic payoff is immense. It is buoys like these and the data that they collect that help scientists predict the absence or presence of El Nino. This has a huge and direct agricultural impact upon coastal states and to a lesser degree states far removed from the oceans. Do you have droughts or floods out of the norm in your area? The cause could be ocean related.

The Stratus Buoy can make the following measurements: -precipitation -wind speed and direction -air temperature -relative humidity -barometric air pressure -long wave radiation (radiation given off by a hot body) -short wave radiation (incoming energy from the sun) -sea surface temperature. The buoy not only transmits this data real time but also stores much more detailed information on flash cards. These cards are collected and taken back to the laboratory for further study. In addition to all the above surface instrumentation there is over 5,000 lbs of sub surface measuring instruments. These include current velocity, salinity, and temperature. These instruments are located at various depths down to 2,500ft. For example there will be 8 current velocity-measuring instruments at 8 different depths.

Cool facts

-You probably wonder how this million-dollar instrument is powered. Wind, solar, high powered lithium batteries, nope none of the above. It is powered by 1,650 D cell alkaline batteries. Exactly the ones you would use in a flashlight in your house.

-The mooring line (the line connected to the anchor) will be over 12,000 feet long

-The anchor is a cast iron weight that weighs over 9,000 pounds. -This anchor will take over 45 minutes to make it’s journey to the bottom of the ocean

-The buoy will have over 5,000lbs of instruments hanging from the bottom of it

The Experiment

There is no direct experiment with the stratus buoy. The data collected by it is used by scientists world wide to generate new ideas, hypothesis, and conclusions. As stated earlier this data is used to help climatologists improve computer models and check them for accuracy.

Dozens of instruments to be deployed directly beneath the buoy 800 meters worth that’s over 2,400 feet of instruments!

Classroom Activities

Elememtary K-6: Items needed- Styrofoam cup or similar floating device, small piece of string and a metal washer some rubber cement or other flexible glue, some round toothpicks and a large tub of water. Have the students decorate their cup using markers, plastic straws, aluminum foil, or anything else that the kids might think would make their buoy look scientific. Put the string through the bottom of the cup making as small as hole as possible (the point of a compass or the toothpicks work well) tie the string to a toothpick on the inside of the cup and let the toothpick rest on the bottom inside the cup. Place a small dab of glue on both the inside and outside of the string to keep the water from entering the cup. With the string dangling from the bottom outside of the cup tie on the washer or other object for weight. Ask the kids what scientific information their buoy collects.

Middle School:

Items needed- volt-ohm meter, glass beaker, two small copper wires, 500ml of distilled water, and some common table salt.

Salinity of the oceans seawater is of concern to scientists and is one of the tests conducted by the Stratus 7 Buoy. The way scientists test for salinity is called a conductivity test. That is they measure the conductivity of seawater. Have the student pour 250ml of distilled water into a glass beaker. Place two small copper wires on opposite sides of the beaker and submerged in the water. Be sure that at least 1cm of wire is exposed copper and in the water. Set the voltmeter to ohms and get a reading and record it. Add .5 grams of salt and mix well. Test the conductivity again. Keep adding salt in .5-gram increments. Does the readings change? If so how? Are the numbers getting larger or smaller? If so why?

High School:

Items needed- volt-ohm meter, glass beaker, two small copper wires, 250ml of distilled water, and some common table salt, and sugar.

Salinity of the oceans seawater is of concern to scientists and is one of the testes conducted by the Stratus 7 Buoy. The way scientist test for salinity is called a conductivity test. That is they measure the conductivity of seawater. Have the student pour 250ml of distilled water into a glass beaker. Place two small copper wires on opposite sides of the beaker and submerged in the water. Set the voltmeter to ohms and get a reading and record it. Add .5 grams of salt and mix well. Test the conductivity again. Keep adding salt in .5-gram increments. Does the readings change? If so how? Are the numbers getting larger or smaller? If so why?

Now run the test with sugar. What are your results? Was there a change? Now change the temperature of the solution by heating or chilling with ice. Does this make a difference in your readings?

Lead a class discussion on what each instrument of the stratus buoy does and why it is important to scientists.

October 13, 2006April 1, 2021

Brett Hoyt, October 13, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 13, 2006

This is a Sea Surface Drifter. The students of Burlington Elementary School in Billings Mt adopted this drifter. It was deployed off the coast of Chile — This is a Sea Surface Drifter. The students of Burlington Elementary School in Billings Mt adopted it, deployed off the coast of Chile

Weather Data from Bridge
Visibility: 12nm (nautical miles)
Wind direction: 160º
True Wind speed: 7 knots
Sea wave height: 0-1ft
Swell wave height: 5-7 ft
Sea level pressure: 1015.1 millibars
Sea temperature: 20.7ºC or 69.2ºF
Air temperature: 21.0ºC or 69.8ºF
Cloud type: cumulus, stratocumulus

The Scientists

We will not highlight a scientist today, as the star of our show is the floats and drifters.

The Machine

Today we will examine the Argo Floats and drifters. The two machines do basically the same measurements but in different layers of the ocean. The drifters that we are deploying during the Stratus 7 cruise measure sea surface temperature (SST) and transmit that temperature and their location as they drift with the upper ocean currents. This tells scientist how warm or cold the water is and how the currents in the ocean move about. The reason scientists use drifters is that even though satellites are fairly good at acquiring sea surface temperatures some, at present, cannot penetrate cloud cover and all need the drifter data to improve their accuracy. By using the hundreds of drifters scattered throughout the globe, scientist can use this data to improve the current computer models of global climate condition and get real-time data to use in their work.

This is an Argo float. It will spend most of its life in the very deep ocean (up to 6,000ft deep) and come to the surface every 10days to send off its data. It is approximately 4 •••ft to 5 ft long and weighs about 30 lbs. — This Argo float will spend most of its life in the very deep ocean (up to 6,000ft deep) and come to the surface every 10 days to send off its data. It weighs about 30 lbs.

Argo floats lead an active life traveling very little compared to surface drifters. The reason for this is that floats spend most of their time in extremely deep and very slow-moving ocean waters. Some deep ocean water takes thousands of years to make their cycles through the oceans systems. These floats descend to about 1,500m to 2,000m (approximately 4,500ft to 6,000ft) and every 10 days a bladder inflates and it rises to the surface taking measurements along the way; at the surface it transmits its data back to the scientists thousands of miles away. These floats are built to last about 4 years.

The Experiment

No experiment with the drifters and floats.

Classroom Activities

Mr. Hoyt and Jeff Lord are examining a drifter adopted by the Burlington Elementary Research Team (B.E.R.T.). We all wish BERT a pleasant journey as he travels the Pacific Ocean.

Elememtary K-6:

Since measuring environmental temperatures is one of the primary functions of the drifters and floaters, lead the students in a discussion of: What is hot? What is cold? What can we use to measure temperature? Do students have a temperature?

Middle School:

The thousands of drifters are used to get real time readings of sea surface temperatures worldwide. Start by asking the students what is the temperature of our classroom. After they give you the answer ask them if it is that temperature everywhere in the classroom. Have them devise a way to check their theory. Why is it the same/different around different parts of the room? Hint: This hint is for the classroom teacher and will be found at the bottom of this posting.

High School:

This is the drogue chute that is deployed in the water beneath the drifter to stabilize its deployment with the ocean currents.

Students should go to the Datastreme Oceans website to explore some of the cool findings available to the public.

Thought Experiment provided by Dr. Weller:

How does an Argo float rise to the surface and later sink to a desired depth?

Middle School hint:

Have the students set about 20 cups or glasses, filled with water, in various locations around the room. Be sure the containers are covered to reduce cooling due to evaporation. Let the water stabilize overnight. The next day, have the students take temperature readings at the different “sites”. Compare the different readings around the room. Are they all the same or are they different. Lead the students in a discussion on the reasons for their results. Can they make any predictions about tomorrow’s readings? Do the readings change over the weekend? (Most schools turn down the heat on the weekend). Have each class post their findings so that other “scientists” from other classes can be compared with their own. Maybe 1^st period is different from 7^th period.

High School Hint:

The ocean is stratified–the seawater is denser the deeper you go. This is because it is colder and sometimes saltier at depth. The density of the float depends on the ratio mass/volume. The float has a reservoir of oil inside that is pumped into or taken back from an external inflatable rubber bladder. Filling or emptying the bladder changes the volume of the float while its mass remains the same, so the float can change its density, allowing it to become buoyant enough to float to the surface or to adjust itself to match the density of seawater at 1,500m.

October 12, 2006April 1, 2021

Brett Hoyt, October 12, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 12, 2006

Weather Data from Bridge
Visibility: 12nm(nautical miles)
Wind direction: 185º
Wind speed: 9 knots
Sea wave height: 2-3ft
Swell wave height: 3-4 ft
Sea level pressure: 1011.9 millibars
Sea temperature: 23.9ºC or 75.0ºF
Air temperature: 21.0ºC or 69.8ºF
Cloud type: cumulus, stratocumulus

Dr. Byron Blomquist (seated) and graduate student Mingxi Yang (standing) beside the Atmospheric Pressure Ionization Mass Spectrometer or APIMS.

The Scientists

As I mentioned yesterday, today I will begin to introduce the scientists, their equipment, and their experiments. Today I would like to introduce to you Dr. Byron Blomquist (lead scientist) and graduate student Mingxi (pronounced ming-she) Yang, both from the University of Hawaii. They plan to study the exchange of gases between the ocean and the atmosphere.

Dr. Blomquist is a quiet, soft-spoken, and self-professed tinkerer. He began his love of science at an early age with a fascination for all things living. He took a great interest in bugs, snakes, birds, and other animals and insects. He stated that Biology was his favorite subject. Dr. Blomquist has a few interesting facts about himself he is willing to share with us; one is that he works in Hawaii however he lives in Colorado and the other is that he finished high school in only three years!

Mr. Hoyt standing in front of Dr. Blomquist’s portable lab. Please note the wires leaving the lab to the left of the photo.

The other scientist is graduate student Mingxi Yang, we just call him Ming for now but someday we will have to address him as Dr. Yang as he plans on earning his doctorate degree. Ming is a very intelligent and self-confident graduate student from the University of Hawaii. Ming originally was born in Beijing China, when at the age of 14 his family moved to Massachusetts. He originally was going to get a degree in chemistry when in his junior year in college he accepted a summer internship with the Woods Hole Oceanographic Institution. It was during these 12 weeks that Ming decided that he could impact the world in a more positive way by switching majors and getting a degree in Oceanography.

Here is a view of the mast at the front of the ship where Dr. Blomquist’s instruments are located. Because his instruments are so sensitive, no smoking will be allowed on the bow (front) of the ship during the experiment. The mast is over 20m high that is over 60ft! — Here is a view of the mast at the front of the ship. Because the instruments are so sensitive, no smoking will be allowed on the bow. The mast is over 20m high that is over 60ft!

The Machine

The Atmospheric Pressure Ionization Mass Spectrometer or APIMS for short is one of only three that exist worldwide. Dr. Blomquist built this machine from scratch. Many of the components and circuit boards were custom designed and built specifically for this machine. If cool and shiny is your thing and you have $300,000 in your piggy bank then you might be able to get Dr. Blomquist to build you one. What cool scientific discovery you make with it is up to you. Many students envision that science takes place only in large land based laboratories, but they would be wrong. Below is the portable (you might need a big truck or ship) laboratory that Dr. Blomquist and Ming brought with them. It’s sort of like a camper without the wheels.

The Experiment

We have read about man-made global warming and generally believe that this is not good for the earth and its climate. Scientists also believe that the main source of global warming is the buildup of excess carbon dioxide in the atmosphere. Since it would be impossible to measure everywhere on the earth at the same time scientists use powerful computers to create models (computer programs) to predict what is happening over the entire earth. The Atmospheric Pressure Ionization Mass Spectrometer or APIMS measures a gas, which in computer models is similar to carbon dioxide. What Dr. Blomquist and Ming are doing is collecting data to compare with model predictions to improve current computer models of the climate. What they are looking for is the interaction between the atmosphere and the ocean. Liquids can and do absorb gasses. To illustrate this open up a can of soda pop. The bubbles you see are the gas carbon dioxide leaving the liquid. The ocean both absorbs and releases carbon dioxide, and therefore plays an important role in climate regulation.

The Teacher

I spent my day interviewing scientist and preparing for upcoming interviews with other scientist. Tomorrow we enter international waters and the experiments can begin. I will also begin drifter watch. My watch time will be from 8am to 12 noon and 8pm to 12 midnight. I will provide more details tomorrow and discuss drifters and how they are used.

Classroom Activities

Elememtary K-6:

Because of the complexity of this experiment we will have no classroom activity but perhaps you could enjoy a bubbly beverage of your choice.

Middle School:

How many liquids could you list that have dissolved gases in them that are commonly found in the home. What gases do you think they are? Are they harmful to the planet?

High School:

How many liquids could you list that have dissolved gases in them that are commonly found in the home. What gases do you think they are? Are they harmful to the planet?

We will continue to visit with some of the scientists and find out more on what experiments are being conducted on this Stratus 7 cruise and why.

Mr. Hoyt “driving” the ship. The two controls I am holding are how the ship is steered. The ship has no rudder and the pilot need only to rotate these controls to turn the propellers in a different direction. Much like turning the motor on a small boat.

October 11, 2006April 1, 2021

Brett Hoyt, October 11, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 11, 2006

Weather Data from Bridge
Visibility: 10nm (nautical miles)
Wind direction: 220º
Wind speed: 12 knots
Sea wave height: 3-4ft
Swell wave height: 3-5 ft
Sea level pressure: 1012.9 millibars
Sea temperature: 25.5ºC or 77.9ºF
Cloud type: cumulus, stratocumulus

The Commanding Officer of the RONALD H.BROWN, CAPT. Gary Petrae

The Ship and Crew

I am presently on board the NOAA ship RONALD H. BROWN. This ship was commissioned in 1997 and is 274 feet in length (just 16 feet shorter than a football field) and 52 feet wide. The ship displaces 3,250 tons and has a maximum speed of 15 knots. Captain of the RONALD H. BROWN (RHB) is Gary Petrae. Captain Petrae has just celebrated his 28^th year serving in the NOAA Officer Corps. The RHB is the fifth ship Captain Petrae has served on and the second ship he has commanded in his tenure with NOAA. We are truly lucky to have such an experienced captain at the helm. When you are thousands of miles out to sea, you entrust your life to the captain and crew. One of the interesting facts about a ship at sea is that someone must be at the helm 24 hours a day 7 days a week. Now the captain cannot be there all the time so he turns over the job of “driving” the ship to one of his other officers.

They take “watches” which in this case are four hours in duration. During a recent trip to the bridge (this is what they call the command center for the ship) I was fortunate enough to visit with the Officer Of the Deck (OOD for short) Lieutenant (Junior Grade) Lt (JG). Jackie Almeida. She stands approximately 5’0” with reddish/brown hair and a confidence that fills the bridge. Her bright eyes and effervescent personality quickly put me at ease. She earned her degree in meteorology and joined the NOAA Officer Corps. When she finishes her assignment with the RHB she will join the NOAA hurricane hunters and be advancing our knowledge of these deadly storms.

Ltjg. Jackie Almeida On the bridge of the RONALD H. BROWN — Ltjg. Jackie Almeida on the bridge

The Scientists

The scientists are spending the day checking and rechecking their equipment making sure that when the crucial time comes all will go well.

The Teacher

I spent the day observing the scientist preparing equipment and rechecking systems. I am trying to remember all the safety information that was delivered on the first day. Just like in school, we have safety drills so that in the event something goes wrong everyone knows what to do. We practice fire drills just as you do in school. We also have abandon ship drills. Below you can see me modeling the latest fashion in survival suits. The crew calls them “Gumby suits.”

Classroom Activities

Mr. Hoyt “looking good” in his survival suit. Hey kids, wouldn’t your teacher look good in this suit?

Elememtary K-6

Today’s activity is to give the students an idea of the ship that I’m on. The teacher will need at least 650 ft of string (you can tie shorter rolls together) and as long a tape measure as you can find (a 100ft one works best). This activity would be best done on the playground or any other large open space. Have student-A hold one end of the string and measure out 274 feet in a straight line. Then have student-B hold the string loosely and run the string back 274 feet to a different student-C but even with student-A. Now have students A and C move 52 feet apart and finish up with student A holding both the beginning and end of the length of string-Do not cut the string as you will need to keep letting out more string as you complete the next part. Now have the rest of your class hold the string 52 feet apart between the two long lengths of string working your way up to student B remembering that the ship comes to a point (the bow). Go to this website for complete drawings.

Middle School

At the beginning of this log, I mentioned that the Ronald H. Brown displaces 3,250 tons. What does this mean? Can you use the concept of water displacement to measure other objects? Hint.

High School

The ship travels at a maximum speed of 15 knots. Approximately how long would it take for the ship to sail at maximum speed from Panama City to 25 degrees south latitude and 90 degrees west longitude off the coast of Chile? How many nautical miles would be traveled? How many land miles would that be? Hint.

Here, a scientist is checking an acoustic release mechanism. They lowered it to 1,500 m or approximately 4,500 feet to test it. It will eventually be located 4,000 m beneath the surface or approximately 12,000 ft! — A scientist is checking an acoustic release mechanism. They lowered it to 1,500 m to test it. It will eventually be located 4,000 m beneath the surface!

On my next few postings we will be visiting with some of the scientist and finding out more on what experiments are being conducted and why.

October 10, 2006April 1, 2021

Brett Hoyt, October 10, 2006

NOAA Teacher at Sea
Brett Hoyt
Onboard NOAA Ship Ronald H. Brown
October 8 – 28, 2006

Mission: Recovery and maintenance of buoy moorings
Geographical Area: Southeast Pacific, off the coast of Chile
Date: October 10, 2006

Weather Data from Bridge
Visibility: 12nm (nautical miles)
Wind direction: 240º
True Wind speed: 11 knots
Sea wave height: 2-3ft
Swell wave height: 4-5 feet
Sea level pressure: 1010 millibars
Sea temperature: 28.7 ºC or about 84 º F
Cloud type: cumulus, stratocumulus

Mr. Hoyt on the RONALD H. BROWN leaving Panama passing under The Bridge of the Americas

The Cruise Mission

The overall mission of this cruise is to replace two moorings anchored off the northern coast of Chile. First we will retrieve the Stratus 6 buoy, which has been actively sending weather and ocean data for the past year. We then will deploy the Stratus 7 buoy approximately 800 miles from land. This mooring consists of a buoy that contains numerous meteorological sensors that collect data on relative humidity, barometric pressure, wind speed and direction, precipitation, short- and long-wave solar radiation, temperature, salinity, and velocity of the upper ocean and sea surface temperature. The buoy serves as an extremely accurate weather station, one of few such stations in the open ocean.

Secondly, we will replace a tsunami (a potentially dangerous large wave of water) warning buoy belonging to the Chilean Navy Hydrographic and Oceanographic Service. This buoy provides Chile with warning of approaching tsunamis.

The Teacher

Masked Boobie- these birds fly in front of the ship for hundreds of miles seeking fish. They will occasionally land on the ship to rest. — Masked Boobies fly in front of the ship for hundreds of miles seeking fish and occasionally land on the ship to rest.

Let me introduce myself—I’m Brett Hoyt, a NOAA Teacher at Sea. NOAA’s Teacher at Sea program is open to all teachers K-16 who would like the opportunity to experience first hand working side by side with some of the planet’s top scientists conducting cutting-edge research. If you would like to apply or just know more about the Teacher, go here.

I will be bringing into your classroom the day-to-day happenings that are happening on board the NOAA research ship the RONALD H. BROWN. Please feel free to email me (hoytbk@gmail.com) with any questions you might have about the program, the research, the scientists or any question in general about the ocean. I will try to answer as many as I can. In return, I will from time to time pose questions for you or your class to tackle. I will give hints as to where you might find the answer.

Questions of the Day

Elememtary K-6: How much of the earth is covered by Water? How much is covered by Land? Hint.

Middle school: What chemical compound makes up water? Are the elements solid, liquid, or gas? Hint.

High School: Why is the ocean blue? Are all oceans blue? Why or Why not? Hint.

On my next posting I will be giving you a tour of some of the staff and equipment on board the ship.