Tag: air pollution

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Kirk Beckendorf, July 22, 2004

NOAA Teacher at Sea
Kirk Beckendorf
Onboard NOAA Ship Ronald H. Brown
July 4 – 23, 2004

Mission: New England Air Quality Study (NEAQS)
Geographical Area: Northwest Atlantic Ocean
Date: July 22, 2004

Weather Data from the Bridge
Time 4:50 PM ET
Latitude- 42 49.88 N
Longitude- 70 15.46 W
Air Temperature 20 degrees C
Water Temperature 17 degrees C
Air Pressure 1011 Millibars
Wind Direction at surface Southwest
Wind Speed at surface 15 MPH
Cloud cover and type clear but hazy

Daily Log

Last night at sunset we were just out from Boston when we launched the radiosonde. The pollution levels were up and we had to look through a haze to see the downtown skyline. A sea breeze began blowing cleaner air to us from the east. Late last night we headed east to meet up with a couple of the airplanes this morning. The goal was to have us and two of NOAA’s research planes all under a satellite which will be orbiting overhead. Pollution measurements could be made at many different levels of the atmosphere plus instrument comparisons could be made.

Of course it was foggy again. Wayne Angevine, a meteorologist back on shore was looking at live weather satellite images and got word to us that close by was a clear spot in the fog. The flight crew in the airplanes confirmed what Wayne said. When we got to the latitude and longitude they had directed us to, we found clear skies. The plan worked. The planes flew by making their measurements, several satellites passed over head, the ozonesonde was launched, all of the instruments on the Brown were continuing to collect data and Drew and I did Sunops.

Later today the rest of the fog burnt off, but there was still a haze as we slowly made our way back to the west. We need to be in the vicinity of Portsmouth so that we can meet up with the harbor pilot tomorrow morning. The pilot will direct the ship back into Portsmouth at about noon. The timing is actually important because we need to go in at high tide. Tonight the plan is to continue back and forth through the urban pollution. Before we get to port tomorrow, a couple of the crew will be diving under the ship to do some maintenance that should be interesting to watch.

Today is my last full day at sea on the BROWN. This next week I will be visiting some of the land based scientists, facilities and activities involved in NEAQS. We get into port about noon tomorrow.

I asked some of the scientist what is the one thing my students should know about this research project on air pollution. Some of the statements were:

We are studying a very complicated situation with no simple answers.

To study something very complicated takes lots of coordination and cooperation from numerous organizations and a lot of people.

Air pollution is a global problem not a local problem. Even people in areas, like Redmond, OR, with little pollution should be concerned. Air pollution doesn’t stay where it is made. North America gets pollution from Asia, Europe gets pollution from N. America, Asia gets pollution from Europe.

Each one of us needs to realize that we are part of the problem.

Question of the Day

How can you be part of the solution not just part of the air pollution problem?

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Kirk Beckendorf, July 19, 2004

NOAA Teacher at Sea
Kirk Beckendorf
Onboard NOAA Ship Ronald H. Brown
July 4 – 23, 2004

Mission: New England Air Quality Study (NEAQS)
Geographical Area: Northwest Atlantic Ocean
Date: July 19, 2004

Weather Data from the Bridge
Time Noon ET
Latitude- 44 8.76 N
Longitude- 66 42.03 W
Air Temperature 12 degrees C
Water Temperature 9 degrees C
Air Pressure 1007 Millibars
Wind Direction at surface South
Wind Speed at surface 11 MPH
Cloud cover and type FOG!!!

Daily Log

Ozone can be a major pollutant but we don’t release it into the atmosphere, so where does it come from?

More fog!!! We are all getting tired of the fog. I wonder what the Nova Scotia coast looks like. We have been along the coast for awhile, but I only got a glimpse through the fog for a few minutes.

We followed the Boston pollution up here but now we are in clean air. It has been very interesting, for both the scientists and myself, to see how the kinds and amounts of the gases has changed as the pollution gets older. Leave a glass of milk in the sun on the kitchen counter for a few days and it will change. Air pollution floating in the air and cooking in the sun also changes.

Paul Goldan points out some of today’s data which shows that the air is coming from a pine forest. Every thirty minutes Paul’s equipment samples the air and measures the concentration of 150 different VOC’s (volatile organic compounds). Some VOC’s can be man made and others are natural. This morning’s data shows very low levels of human pollution but there are spikes in the graph for two chemicals that are released into the atmosphere by pine trees (the pine scent). We look at the wind profiler and see that the wind is blowing from Nova Scotia.

Avery Bell emailed and asked which pollutant is most potent. As I have mentioned, the two parts of air pollution are the gasses and the particles. According to several of the scientist on board, ozone and the very tiny particles are the two of most concern from a health standpoint. Small particles and ozone can both damage your lungs. For people who already have breathing problems (such as asthma or emphysema), it can make matters even worse. Ozone also damages plants, both wild and agricultural crops, reducing crop yields. The cost of agricultural losses was one of the first reasons that ozone became a concern.

Every day I spend time talking with some of the scientists who are here from NOAA’s Aeronomy Lab. They are studying ozone and many other gases in the atmosphere. To decrease ozone pollution is much more complicated than just saying let’s reduce the amount of ozone we release. We don’t release ozone into the atmosphere as a pollutant!!! It is made in the atmosphere when other gases combine in the presence of light.

Imagine you live in the desert and you plant a tree in your back yard. It of course needs water, air, nutrients from the soil and light to survive and grow. In your backyard it gets all of the light, air and nutrients that it needs; but imagine that you never water the tree. The tree survives because it gets a little rain, but it doesn’t grow much. Water is limiting its growth. If you water it a lot, the tree grows a lot.

High ozone levels occur in a similar way. For ozone to form, certain gases and sunlight have to be present. If there is only a small amount of those gases, only a small amount of ozone can form. But if there are a lot of those gases, a lot of ozone will form. In the unpolluted atmosphere, there are low amounts of the gases that are needed to make ozone. Guess what happens when we burn fuels to run our vehicles, to make electricity, to heat and cool our homes, and to make the products that we use every day. You guessed it; we release a lot of the gases that are needed to make ozone. Ozone can then reach the high levels necessary to become a health risk. It does not take that much ozone to be at a dangerous level. A level of 80 PPB (parts per billion) for 8 hours is considered too high.

It is very difficult to try and understand what 80 parts per billion really means but I’ll try to help. It takes about 31.7 years to have 1 billion seconds. Imagine how much air you would have if you took a breath every second for 31.7 years and blew all of the air into one balloon. Now imagine that 80 of those 1 billion breaths were ozone. The concentration of ozone in the balloon would be 80 PPB.

Questions of the Day

What are three activities that you do everyday that can add to the atmosphere the gases that help form ozone?

What can you do to reduce the amount of those gases that you are responsible for producing?

Based on the example in the last paragraph how many breaths of ozone could you have in the balloon if there was 1 PPB?

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Kirk Beckendorf, July 17, 2004

NOAA Teacher at Sea
Kirk Beckendorf
Onboard NOAA Ship Ronald H. Brown
July 4 – 23, 2004

Mission: New England Air Quality Study (NEAQS)
Geographical Area: Northwest Atlantic Ocean
Date: July 17, 2004

Weather Data from the Bridge
Time 6:20 PM ET
Latitude- 43 20.33 N
Longitude- 68 18.92 W
Air Temperature 17 degrees C
Water Temperature 14 degrees C
Air Pressure 1009 Millibars
Wind Direction at surface Southwest
Wind Speed at surface 7 MPH
Cloud cover and type Clear

Daily Log

How is it possible to tell if we are in pollution when we can’t even see it?

This morning I went through the normal routine of helping launch the ozonesonde at 10:00. Because it was a sunny day Drew Hamilton could make Sunop measurements throughout the afternoon so I helped with that. We specifically timed the Sunops so that we were taking measurements at the same times that three satellites were crossing overhead. The satellites were taking similar measurements looking down, while we were taking them looking up. Later, our measurements will be compared with those of the satellites.

In general, air pollution is a combination of particles and gases. I have discussed the particles in previous logs, but not much about the gases. A large number of the scientists involved in NEAQS-ITCT are studying these gases. I have spent a large amount of time talking with Eric Williams, Brian Lerner, Sallie Whitlow, Paul Goldan, Bill Kuster, Hans Osthoff and Paul Murphy. They have instruments on board which measure many of the different gases related to air pollution. But not all air pollution is the same.

The cause of the pollution determines what gases and particles are in the pollution. Gasoline powered automobiles release one combination of gas and particles. Diesel engines produce another combination. Coal burning power plants release yet a different combination. Natural gas power plants release (Yep, you guessed it) yet a different combination. In a city these get mixed together, so individual cities have there own unique pollution depending on the number of automobiles, power plants and factories. To make things more complicated, once these chemicals are released into the atmosphere and start mixing together, in the presence of sunlight they react with one another making additional gases and destroying others. What eventually happens to these pollutants and where they go, are two of the questions these scientists are seeking to answer. But answering these questions is very difficult, in part because things get extremely complicated very quickly. As Paul Goldan told me, part of the reason we need to make so many different kinds of measurements is because we are not even sure exactly what we are looking for.

Today as we criss-crossed back and forth through two plumes of pollution Eric showed me some of today’s data. As always, his instruments were measuring and recording some of the gases in the air. The quantities and kinds of gases changed as we went back and forth, helping to map where the pollution was located and how it has changed. Nothing looked different outside, but from the measurements he was taking he could tell that one of the plumes was younger than the other.

During the nightly meeting, Paul Goldan and Tim Bates presented completely different kinds of measurements that agreed with what Eric’s data showed. This comparing of daily observations will help confirm the accuracy of the observations and what they actually mean.

Questions of the Day

Where is the electricity in your house produced?

What kind of fuel is used to make your electricity?

What kind of fuel is burnt to make your automobiles run?

Who should be responsible for the pollution produced to make the electricity you use?

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Kirk Beckendorf, July 15, 2004

NOAA Teacher at Sea
Kirk Beckendorf
Onboard NOAA Ship Ronald H. Brown
July 4 – 23, 2004

Mission: New England Air Quality Study (NEAQS)
Geographical Area: Northwest Atlantic Ocean
Date: July 15, 2004

Weather Data from the Bridge
Time 8:00 AM ET
Latitude- 45 53.18 N
Longitude- 70 36.48 W
Air Temperature 14 degrees C
Air Pressure 1000 Millibars
Wind Direction at surface Northeast
Wind Speed at surface 3 MPH

Daily Log

Yeah!!! The sun is trying to come out, the rains have stopped and the sea has calmed down. No I didn’t get sea sick, but it is hard to sleep when your bed is swaying back and forth and up and down. The winds have shifted and the scientists are hoping that the winds may be blowing some pollution our way. Seems like a strange thing to hope for, but of course they are here to study pollution and the wind has been blowing it away from us.

Why should anybody care if we add microscopic particles to the air?

Yesterday, I discussed one of the techniques used to study the microscopic particles that are in the atmosphere. But so what, why does anyone care about these tiny specks? Air pollution made by automobiles, power plants, factories and ships all contain both gases and particles. To be able to predict the changes resulting from air pollution, we have to learn all we can about the gases and the particles being released.

When the pollution is released into the atmosphere, the gases and particles start traveling with the air. (Just like pouring a quart of motor oil into a river.) Gradually the gases and particles spread out into the surrounding atmosphere. The gases can recombine and may start changing into other chemicals, but that’s another story I will get to soon.

The particles are not all the same. They come in different sizes and are made of a variety of chemicals. There are two main concerns about these little chunks floating along in the sea of gas; health hazards and climate change. If you take a breath, not only do you inhale the gas, but also all of the particles floating in the gas. Some of these particles may have a negative effect on a person’s health.

The main interest in the particles here on the BROWN is the effect they have on climate change. The Earth is of course warmed by the energy (light) coming from the sun. The more energy (light) the Earth gets and keeps, the warmer our temperatures. The less energy (light) the Earth gets and keeps, the cooler the temperatures. Pretty simple stuff? Not at all.

When sunlight shines down through the atmosphere and hits a particle the sunlight can either bounce off of the particle or be absorbed into the particle. If the light bounces back out of the atmosphere the Earth does not keep the light’s energy and there is a cooling effect. When light is absorbed into the particle, the energy (heat) will now be in the atmosphere and so there is a heating effect. Some particles absorb more light than others, so some have a cooling effect on the Earth’s atmosphere and others have a heating effect. One of the questions being asked is, overall do the particles cool the atmosphere or heat the atmosphere? This is not as simple of a question as it sounds, because there are also a lot of indirect effects that are not yet understood.

These microscopic chunks also affect clouds and cloud formation, but how much of an effect is not completely understood. The particles may cause clouds to be less likely to rain or at least, not rain as often. These microscopic particles in air pollution could have an effect on where and when it rains. So the scientists, here on the BROWN, are gathering data to help them try and understand the impact that particles will play in changing the Earth’s climate. Part of their task, is to determine where the particles are from, the numbers, sizes, and chemistry of the particles.

If I lost you in all of that, maybe it will help to put it all in a nutshell. These scientists are studying the type and number of particles in air pollution, to try and understand what effect these little chunks may be having on the Earth’s temperature and water cycle.

As Tim Bates said, we are trying to put together a large jigsaw puzzle and we don’t know what picture is on the puzzle. First we have to find all of the pieces. Then we have to put together the puzzle. We are now at the point that we think we have found most of the pieces and now we are trying to put them together. As you can see from the picture I sent in today there is some relaxation time, in the middle of all the data analysis.

Questions of the Day

The smaller particles are measured in nanometers how much of a meter is 1 nanometer?

If the wind is blowing 5 meters/second and we are 50 miles from Boston how long will it take Boston’s pollution to reach us?

Typical unpolluted air will have about 1000 particles in every cubic centimeter of air. What is something that has a volume of about 1 cubic centimeter?

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Kirk Beckendorf, July 14, 2004

NOAA Teacher at Sea
Kirk Beckendorf
Onboard NOAA Ship Ronald H. Brown
July 4 – 23, 2004

Mission: New England Air Quality Study (NEAQS)
Geographical Area: Northwest Atlantic Ocean
Date: July 14, 2004

Weather Data from the Bridge
Time 10:20 AM ET
Latitude- 42 22.77 N
Longitude- 70 52.02 W
Air Temperature 16 degrees C
Air Pressure 1004 Millibars
Wind Direction at surface Northeast
Wind Speed at surface 13 MPH
Cloud cover and type Stratus clouds and rainy

Daily Log

Why would anyone care if there are a few pieces of stuff 1000 times smaller than a grain of sand floating around in the air?

I visited one more piece of the elephant the past couple of days. To be more accurate, I have been visiting with some of the people who are studying another piece of the pollution elephant. I’ll call them the particle people. I have been visiting with Dave Covert, Tim Onasch, Tim Bates, Patricia Quinn, Theresa Miller, Kristen Schulz, Anders Petterson and Tahllee Baynard and Derek Coffman. These scientists are studying the particles that float in the air. Some particles are from human pollution and some are from natural sources. These chunks of stuff can be so small that it may take more than 250,000 lined up side by side to be an inch long, about 1000 times smaller than a grain of sand. Those are not even the smallest ones. Even though these particles are so tiny these scientists can find out what chemicals make up the particles and how many of the particles are in the air.

Amazingly, the scientists can sort out these very tiny chunks by weight. But as Paul Murphy told me the other day none of this is magic. A number of methods are used to sort the particles; here is the idea behind one of them. But you are going to have to use your imagination again. You are in a long narrow L-shaped hall. You look down the hall and at the end it makes a sharp turn to the left. You and a friend are going to have a race to the end of the L. But of course this isn’t a normal race. Each of you has an office chair in front of you. In your buddy’s chair is a very large person, your chair has a mouse. On your mark, get set, go!!! You both start pushing and running as fast as you can. One of the rules in our race is that you cannot slow down until you get to the end. Your friend is a major weight lifter and runner and so even though he is pushing a lot more weight the two of you are neck and neck, flying down the hall. Then you get to the sharp left hand turn. Remember this is a narrow hall and you can’t slow down. You and your mouse make the turn fine. Because of the heavy person in his chair your buddy can’t make the turn and hits the wall. You and the mouse end up at the end of the hall. Your buddy’s chair and passenger end up splattered against the wall.

But we were talking about microscopic particles in the air. The big white air inlet shown in pictures I sent yesterday pulls in air. Inside that large inlet are 21 smaller tubes which separate the air and sends it to different pieces of equipment. Some of the particles are removed from the air and are separated by size in a method similar to our race. A stream of the air, along with any particles that are in the air, quickly moves through a tube called an impacter. (In our race the mouse and person on the chair represent two different sized particles. You and your buddy are the air.) The air and any particles in the air have to make a sharp right hand turn. The largest particles can’t make the turn and they hit and stick to the “wall”. As the air moves through the tube, the air and remaining particles have to make progressively tighter turns. Each turn separates out a different sized particle. Those particles are collected off the wall and can be analyzed to determine what chemicals they are made of as well as weight and numbers of each size. Removing the particles from the impacter (the wall) needs to be done under controlled conditions so that contamination does not occur. Other techniques are then used to analyze the particles that are so small that they get through the “maze”.

While I have been on the ship there have been two main issues that I have been learning about. The first is learning about the techniques which the scientists use to study pollution. The second issue is: why make these observations and what will be done with them. Most of what I have described are the techniques that are being used. I have not written much about why the scientists are doing this and what they hope and expect to learn. More about that soon.

So why would anyone care about a few tiny particles anyway?

When the particles are breathed into a person’s lungs they can cause health problems. The particles may also have an impact on climate change, more about that in the next log.

Today the weather has again been cloudy, cool and rainy. The winds are blowing strong from the northeast which brings us clean air so we have moved south of the shipping lanes going into Boston to try and measure some ship exhaust. The swells are about 5 feet high and so the ship is rocking more than it has been. Everyone seems to be staggering about when they walk.

Questions of the Day

What are some of the main gasses which cause the greenhouse effect on Earth?

Where do the particles come from?

On average how long will they stay in the atmosphere?