Robert Oddo – Page 2 – NOAA Teacher at Sea Blog

July 23, 2009April 5, 2021

Robert Oddo, July 23, 2009

NOAA Teacher at Sea
Robert Oddo
Onboard NOAA Ship Ronald H. Brown
July 11 – August 10, 2009

Mission: PIRATA (Prediction and Research Moored Array in the Atlantic)
Geographical area of cruise: Tropical Atlantic
Date: July 23, 2009

Weather Data from the Bridge
Outside Temperature 26.77^oC
Relative Humidity 74.89%
Sea Temperature 27.64 ^oC
Barometric Pressure 1013.98 inches
Latitude 07^o 59.993 N Longitude 22^o 59.767W

Science and Technology Log

We arrived at the first buoy two days ago and exchanged the “package” which is kind of like the brains of the buoy. Four people went out with a small boat and exchanged the package. This is not an easy task since you have to climb off the small boat onto the buoy in what can be pretty rough seas and change instruments. We also deployed the “CTD” for the first time. After the deployment, we collected seawater from various depths for salinity and dissolved oxygen analysis. We also are deploying XBTs every 10 nautical miles on a 24 hours schedule as the ship steams along its course. There are two shifts. I am on the 12 noon to 12 midnight shift. The XBT (Expendable Bathythermograph) is dropped from a ship and measures the temperature as it falls through the water. Two very small wires transmit the temperature data to the ship. When it gets to about 1500 meters, the small wire is cut and the operation is over. By plotting temperature as a function of depth, the scientists can get a picture of the temperature profile of the ocean at a particular place.

Preparing to service a buoy (left) and recovered buoy on deck (right)

Yesterday, we got to the second buoy and had to pretty much exchange it with a new package, sensors and an anchor. This took over 8 hours to do and takes a lot of manpower. The buoy is actually pulled up on the deck as well as the instrumentation below the buoy and then new instruments, buoy and an anchor are deployed. If this is not done exactly right, everything can be destroyed.

Personal Log

Wow, there is a lot of action right now on the ship. The atmospheric scientists are releasing sondes, collecting dust and smoke samples, and measuring incoming solar radiation at different wavelengths. There are people getting instrumentation ready for the next buoys we are steaming towards. People are deploying CTDs, XBTs, and drifters. Behinds the scenes the crew lends all kinds of support, from preparing food, working the winches and cranes, navigating through the ocean and working in the engine room It is really teamwork that makes this all work and not any one person could do all of this work. There are a lot of very dedicated people onboard this ship and all their hard work make this work!!

Here I am deploying an XBT (left) and collecting seawater samples from the CTD (right)

July 14, 2009April 5, 2021

Robert Oddo, July 14, 2009

NOAA Teacher at Sea
Robert Oddo
Onboard NOAA Ship Ronald H. Brown
July 11 – August 10, 2009

Mission: PIRATA (Prediction and Research Moored Array in the Atlantic)
Geographical area of cruise: Tropical Atlantic
Date: July 14, 2009

Weather Data from the Bridge
Outside Temperature 26.01^oC
Relative Humidity 89.26
Sea Surface Temperature 28.3^oC
Barometric Pressure 1015.9 inches
Latitude 8^o 53.96 N Longitude 48^o 05.43 W

Science and Technology Log

We released our first radiosonde this morning. These balloons have instruments attached to them that will measure atmospheric pressure, temperature and relative humidity as they go up into the atmosphere. As the balloon rises, it expands as the atmospheric pressure outside the balloon decreases. After about 2 hours the balloon bursts and falls back into the ocean. Four of this particular type of radiosonde will be released every day. This data is used as input for weather prediction models, weather and climate change research, input for air pollution models and ground truth for satellite data.

We also deployed our first global drifter this afternoon. A surface drifter consists of a buoy and a sea anchor. The drifters have sensors that can measure sea surface temperature and the ocean current. Information is collected by the sensors and uploaded to a passing satellite and then transmitted back to Earth where all the information from all the drifters give us a better picture of what is happening out in the ocean. Drifters are deployed from hurricane hunter aircraft so we can better predict and understand hurricanes. Data from drifters was used to determine where floating debris would be found shortly after the disappearance of Air France flight 447 on May 31, 2009. For more information on the NOAA Global Drifter Program, visit their website.

Personal Log

I have received a couple of emails asking about the food on the ship. We have three meals a day and there is quite a selection. For breakfast, you can have pancakes, eggs, sausage, oatmeal, fresh fruit or a selection of dry cereal. For lunch, it really varies; today there was a salad, hot dogs, hamburgers and french fries. Dinner also varies, but so far we have had fish, ribs, chicken and a salad. There is also a veggie option for each meal. Coffee, tea and other beverages as well as some snack items are pretty much available 24 hours.

July 13, 2009April 5, 2021

Robert Oddo, July 13, 2009

NOAA Teacher at Sea
Robert Oddo
Onboard NOAA Ship Ronald H. Brown
July 11 – August 10, 2009

Mission: PIRATA (Prediction and Research Moored Array in the Atlantic)
Geographical area of cruise: Tropical Atlantic
Date: July 13, 2009

Weather Data from the Bridge
Outside Temperature 27.7^oC
Relative Humidity 80.16
Sea Temperature 28.2^oC
Barometric Pressure 1013.76 inches
Latitude 10^o 21.11 N Longitude 52^o 13.67 W

Science and Technology Log

We have been steaming at full speed towards our first buoy. To the right you can see a picture of the replacement buoy that is on the back of the ship. This buoy will be lowered into the water using cranes on the ship and then anchored in place. These buoys are anchored on the bottom of the ocean, which is very deep here in the Tropical Atlantic. The ocean here right under this ship is 4,990 meters or 16,371 feet deep. That’s a lot of chain to attach to the anchor!! A picture of the buoy instruments that will be redeployed are on the right. There are other instruments that extend down into the ocean.

Personal Log

Anchors for the buoys ATLAS buoy instruments that will be redeployed — Anchors for the buoys

I was wondering how we were going to deal with time as we traveled to the East. A notice was put up yesterday telling us that we should change our clocks from 4 hours ahead of Greenwich Mean Time to 3 hours ahead of Greenwich Mean Time. This ship has things going on 24 hours, so it is really easy to lose track of time and the day.

All in all, it is pretty comfortable on board and the people are very friendly. If you need to take a break from your work you can watch a video, read in the library, or sit out on the back deck of the ship.

Anchors for the ATLAS buoy instruments that to redeploy — Anchors for the ATLAS buoy instruments to redeploy

July 12, 2009April 5, 2021

Robert Oddo, July 12, 2009

NOAA Teacher at Sea
Robert Oddo
Onboard NOAA Ship Ronald H. Brown
July 11 – August 10, 2009

Mission: PIRATA (Prediction and Research Moored Array in the Atlantic)
Geographical area of cruise: Tropical Atlantic
Date: July 12, 2009

Weather Data from the Bridge
Air Temp 27.5^oC(81.5F)
Relative Humidity 76.63
Sea Temp 28.22
Barometric Pressure 1015.15 inches
Latitude 11^o42.80 North Longitude 56^o 07.33 West
Traveling at 10.7 knots

Science and Technology Log

There is a lot of unpacking and setup that has to be done on a scientific cruise like this one. Researchers were busy today getting schedules setup, equipment working and orienting themselves to their workspaces. We are now steaming directly to 0^o, 23^oW to service a buoy in the PIRATA backbone that has not been transmitting data since 21 June 2009.

Yesterday, I wrote about PIRATA (Prediction and Research Moored Array in the Atlantic). Another project that is also going on simultaneously is the Aerosol and Ocean Science Expedition (AEROSE). Saharan dust storms are estimated to inject three billion metric tons of mineral aerosols a year into the troposphere. The aerosols impact precipitation, fertilize the ocean, and change the air quality and impact ecosystems in the Caribbean and the US eastern seaboard. Red tides, increased rates of asthma and changes in precipitation in the eastern Atlantic and Caribbean have been associated with this dust from the Sahara. The data collected from this cruise will help us understand better the impact of his Saharan dust on the Caribbean and the US eastern seaboard.

One must be prepared for emergencies at sea and today we had an abandon ship drill and a fire drill. There are 49 people aboard the Ronald H. Brown and it is important to know what do in case of an emergency and make sure everyone is accounted for.

Personal Log

We got underway from Barbados yesterday afternoon and the seas were described as being a bit “lumpy”. I noticed little by little people seemed to disappear and was wondering what was going on and then it hit me. Nausea, cold sweats and not being to get comfortable at all. I got real sleepy and found a spot in the library and crashed for a couple hours. There is really no place to go. I woke up around dinner, took some seasickness medicine and hung out for the rest of the evening. Believe me, I was not the only one trying to get their sea legs. There were very few people around. It takes time for the body to adjust to the rocking of the boat and some adjust faster than others. This morning, I feel much better.

The course we have taken since we departed from Bridgetown

July 11, 2009April 5, 2021

Robert Oddo, July 11, 2009

NOAA Teacher at Sea
Robert Oddo
Onboard NOAA Ship Ronald H. Brown
July 11 – August 10, 2009

Mission: PIRATA (Prediction and Research Moored Array in the Atlantic)
Geographical area of cruise: Tropical Atlantic
Date: July 11, 2009

NOAA Ship Ronald H. Brown docked in Barbados

Weather Data from the Bridge
Air Temperature 27.6^oC (81.7^o)
Relative Humidity 82.6%
Sea Surface Temperature 28.4^oC (83.1^oF)
Atmospheric Pressure 1014.8

Science and Technology Log

The Prediction and Research Moored Array in the Atlantic (PIRATA) is project that is monitoring the upper ocean and near surface atmosphere of the Tropical Atlantic. This is done by the deployment and maintenance of moored buoys and meteorological stations across the Atlantic. One of the purposes of this cruise is to do maintenance work on some of the buoys. The last couple of days have been spent loading equipment onto the ship and preparing the ship for this mission.

One of the science labs with equipment ready to be unpacked

There is an incredible amount of preparation for a cruise such as this one. Scientific equipment must be packed carefully, shipped to the location where the ship is docked, and then unloaded and set up. If you forget something you might not be able to collect some of the data that you hoped to obtain. The data collected from this array of buoys will lead to a better understanding of an area of the Atlantic which is the main development region of tropical cyclones that threaten the United States.

Personal Log

Arrived in Barbados late on the night of July 9^th. Got to the R. H. Brown early on the morning on the 10^th. Spent most of the day getting situated and meeting members of the scientific team as well as the crew. Berths are small but comfortable. I was surprised at all the amenities on the ship. There is wireless Internet, a ship store, movies at 5:30pm and 7:30pm, laundry and even an exercise room with free weights, and elliptical and a treadmill. We attended an orientation session this morning regarding ship procedures, safety and general life onboard the R. H. Brown.

Picture of my berth. I have the top bunk.

Practicing getting in and out of immersion suits