Contrails and Warming

  • Researchers say preliminary results suggest contrails can warm the atmosphere - maybe above and beyond airplane's carbon emissions. (Photo courtesy of NOAA)

It’s the tail end of the holiday
air travel season, and, if you’re
flying, you might not be thinking
about your impact on climate
change. But Shawn Allee reports, some scientists are:

Transcript

It’s the tail end of the holiday
air travel season, and, if you’re
flying, you might not be thinking
about your impact on climate
change. But Shawn Allee reports, some scientists are:

Mark Jacobson studies atmospheric science at Stanford University.

He’s just finished research on airplane emissions, including contrails. Those’re the streaming vapor clouds you see coming out of high-flying airplanes.

Jacobson wants to see if contrails contribute to global warming.

“And we’re trying to find out what’s the relative contribution of aircraft to that warming.”

Jacobson says preliminary results suggest contrails can warm the atmosphere – maybe above and beyond airplane’s carbon emissions.

He says his upcoming paper will likely stir a lot of debate next year, since flying’s becoming more common and there hasn’t been much research on its impact yet.

For The Environment Report, I’m Shawn Allee.

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Shut Off That School Bus!

  • There are still a lot of states that don't have any restrictions on diesel idling. (Photo courtesy of the National Park Service)

Diesel exhaust has been linked
to a lot of health problems –
asthma, heart disease, and cancer.
That’s why so many states and cities
across the country have anti-idling
laws for diesels. Mark Brush reports
some bus companies are being caught
with their engines running:

Transcript

Diesel exhaust has been linked
to a lot of health problems –
asthma, heart disease, and cancer.
That’s why so many states and cities
across the country have anti-idling
laws for diesels. Mark Brush reports
some bus companies are being caught
with their engines running:

In Connecticut and Rhode Island , the Environmental Protection Agency caught a bus company called First Student breaking anti-idling laws. In some cases, they found bus drivers idling their engines for up to two and a half hours.

The government just reached a settlement with First Student. Tim Conway is an enforcement lawyer for the EPA.

“First Student really stepped up to the plate once we’d identified the violations. And they helped us look for solutions that would protect children’s health and protect the health of people around the diesel vehicle.”

First Student is now retraining their drivers and cleaning up their emissions. The company operates buses in 40 states.

There are still a lot of states that don’t have any restrictions on diesel idling. So, on any given school day, you can find long lines of buses polluting the air in front of schools, waiting for the kids to come out.

For The Environment Report, I’m Mark Brush.

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Power Plant Pollution From Plug-Ins?

  • Some people get a little concerned about more electrics and electric-hybrid cars. That’s because 50% of electric power in the U.S. comes from coal-burning power plants. And, just about every state wants to build more power plants to meet peak demand. (Photo by Ed Edahl, courtesy of FEMA)

The big automakers are working on
coming up with plug in hybrids. By the
end of 2010, G-M and Toyota plan to have
cars you can plug in to charge up batteries,
backed up with small gas powered engines.
Lester Graham reports there are concerns
about whether pollution from power plants
will be any better than pollution from tailpipes:

Transcript

The big automakers are working on
coming up with plug in hybrids. By the
end of 2010, G-M and Toyota plan to have
cars you can plug in to charge up batteries,
backed up with small gas powered engines.
Lester Graham reports there are concerns
about whether pollution from power plants
will be any better than pollution from tailpipes:


I was out the other day with a guy who converted his Saturn four-door into an all electric
vehicle. Did it all himself.

His name’s Bob Gurk. He’s one of a lot of people who think there’s a better way, and
they want you to see for yourself.

Bob Gurk: “Here are the keys.”

Lester Graham: “I’m drivin’?”

Guys like Bob Gurk think the big automakers should have come up with electrics and
plug-in hybrids a long time ago.

Lester Graham: “Unplug here?”

Bob Gurk: “Yeah.”

(sounds of driving)

Bob Gurk says, sure, he spent a lot converting his car to electric. And there are some
sacrifices: no air conditioning, he can only go just a little over 50 miles without a charge,
but then, he’s not paying close to four-bucks a gallon for gasoline now.

Bob Gurk: “I figure it’s about three cents a mile.”

Lester Graham: “Three cents a mile?”

Bob Gurk: “Yeah.”

Lester Graham: “As opposed to gasoline, which is?”

Bob Gurk: “Ten cents a mile, I’d say. At least.”

Some people get a little concerned about more electrics and electric-hybrids. That’s
because 50% of electric power in the U.S. comes from coal-burning power plants. And,
just about every state wants to build more power plants to meet peak demand.

A guy who’s supposed to know something about electric cars is Andy Frank. He’s at
the University of California Davis. Some call him the father of the plug-in-hybrid. Andy
Frank says we don’t use all the power that’s available right now.

“What a lot of people don’t realize is that the grid actually has excess capacity. The
reason why is there has to be enough capacity to satisfy the peak draw in the middle of
the day. But, at night everybody turns off their lights and that draw goes down to about
anywhere between a half and two-thirds of what is required during the peak of the day.”

So, the idea is you could plug in your plug-in hybrid overnight.

“And then the question is how many cars could you charge with that idle capacity on our
existing grid? About 75 to 80% of cars in our entire fleet in the U.S. could be charged
with that excess capacity that we currently have.”

That’s assuming most people would only plug in at night, during the off-peak hours. If
most of them did, that would be a lot of cars that would not be emitting pollution from the
tailpipes.

But that also means some power plants will be burning more coal at night, billowing out
pollution, including greenhouse gasses.

Dustin Dwyer reports on automotive issues for Michigan Radio and he’s covered this
issue.

“One of the benefits, the power companies will tell you, is that if you have millions of
tailpipes out there spewing emissions, it’s much more difficult to capture those emissions
or manage those emissions than it is to manage coming out of one smokestack at the
power plant.”

But, you do end up shifting some pollution upstream to the power plants. And that
would pollute rural areas more, because that’s where they build the power plants.

The experts say that’s why we ought to start building parking lots with car ports covered
in solar panels, put up more wind turbines, and find other ways to use energy better – to
power all those electric and plug-in hybrids that are coming.

For The Environment Report, this is Lester Graham.

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Revving Up Sales of Cleaner Diesel Cars

When you think of diesel engines, you might think of big, noisy, stinky trucks. But that’s changing. And a domestic automaker has plans to bring a cleaner, higher performing diesel engine to passenger cars. The company insists: it’s not your father’s diesel. The GLRC’s Julie Halpert has the story:

Transcript

When you think diesel engines, you might think of big, noisy, stinky
trucks, but that’s changing and a domestic automaker has plans to bring a
cleaner, higher performing diesel engine to passenger cars. The
company insists: it’s not your father’s diesel. The GLRC’s Julie Halpert
has the story:


In Europe… people have been hearing this catchy little tune on a
television commercial…


(Sound of commercial)


If you hate something, improve it. That’s the message of this Honda UK
commercial that highlights the historically loud, smelly diesel engines.
It’s intended to promote Honda’s new, cleaner diesel, something it’s
launching in Europe.


Diesels have always been more popular in Europe than the U.S. That’s
because there diesel fuel is roughly 20 to 30 percent cheaper than
gasoline there, and diesels get great fuel economy… 30 percent better
than in gasoline engines.


Here in the U.S., diesels haven’t sold well. In the 1970s, when diesel
fuel was cheaper than gas, diesels gained in popularity briefly, but people
didn’t like the stench of the smoky fumes and the clunky sounds of diesel
engines. Those lingering attitudes have scared Honda off from bringing
its new diesels here.


But Daimler/Chrysler is trying to change all that. The company is
drawing on its European expertise to bring advanced technology diesels
to more U.S. passenger cars, and now, they think Americans will buy
them.


Jim Widenbak is a manager of small diesel systems for Daimler/Chrysler.


“We think that there’s a niche for diesels in the North American market,
and We’re not sure exactly how big, but I would characterize us as kind
of bullish on diesels. We really think there’s a place for them and
that customers will ultimately be very happy with diesel products.”


Daimler/Chrysler currently offers a diesel engine on its newer models of
the Jeep Liberty and the Mercedes E-320. Sales of these vehicles were
more than double what the company expected – 10,000 for the diesel
Jeep Liberty and 5,000 for the E-320.


Widenback says that electronic controls have improved over the past 30
years, making diesels better performing, more fuel efficient and cleaner
burning.


The company is in negotiations with the Environmental Protection
Agency to use a new technology, currently in use in Europe, that cuts
pollution further – just in time for tough new federal emission controls
that take effect by 2008. The process uses a material called urea that’s
injected into the exhaust before the exhaust hits the pollution control
device. This ultimately removes troublesome emissions of nitrogen
oxides.


There is one problem with the pollution control system, though.
Anthony Pratt directs power train forecasting for J.D. Power Automotive
Systems. He says the car periodically will run out of its supply of urea.


“So, in other words, you’re not getting the injection of urea in the
exhaust, the vehicles will continue to perform normally as if the urea
tanks were full but they will not meet the more strict emission
standards.”


If the company finds a way to ensure the tanks stay full, Pratt thinks it
will work. Pratt projects diesel engine sales will grow from 3 percent of
the market in 2005 to seven and a half percent in 2012, overtaking sales
of hybrid vehicles, which are only projected to be 4% of the market.


“I think the vehicle manufacturers will be successful in ultimately
educating the consumer in that the new diesel technology is not the dirty,
clanky, loud and sluggish technology they may be familiar with from the
late 70s and early 80s.”


(Sound of car dealership)


That message – that diesels are worth buying – is falling on deaf ears for
the customers of Schultz Motors. Tyler Shultz, the general manager, doesn’t
think it will fly, based on what he’s seen.


“As diesel prices went up in the last six months to a year, we virtually
have lost interest. Again, it’s not that the consumer doesn’t want it, but
when they see fuel prices go above gasoline prices, it was almost like
somebody flipped a switch.”


Shultz says it’s too expensive to buy and maintain a diesel and customers
won’t recoup the cost savings from better fuel economy unless they own
their car for several years. He, and some other dealers in the area don’t
think diesels will ever become popular.


Daimler/Chrysler’s Widenbak disagrees. He expects those fuel prices to come
down, and as they do, he says people will start buying diesel vehicles.


“We’re confident that our vehicles, diesel vehicles in general and our vehicles
specifically, can appeal to people.”


Daimler/Chrysler is so confident, it expects to roll out diesel engines in
more of its passenger cars over the next few years.


For the GLRC, I’m Julie Halpert.

Related Links

Rethinking Water Runoff Design

  • Rainwater that falls on paved areas is diverted into drains and gutters. If the rainfall is heavy enough, the diverted water can cause flash flooding in nearby rivers and streams. (Photo by Michele L.)

Some planning experts are worried that the rapid development in cities and suburbs is paving over too much land and keeping water from replenishing aquifers below ground. The Great Lakes Radio Consortium’s Lester Graham
reports:

Transcript

Some planning experts are worried that the rapid development in cities and suburbs is
paving over too much land and keeping water from replenishing aquifers below ground.
The Great Lakes Radio Consortium’s Lester Graham reports:


In nature… when it rains… the water slowly soaks into the ground and makes its way
through the soil and rock to eventually be stored as groundwater. Some of it makes its
way underground to be stored in aquifers. And some of it slowly seeps through the rock
for a while and then resurfaces as springs to feed streams during times when there’s not a
lot of rain. It’s a natural storage system and a lot of cities rely on that water.


But when we build buildings and houses and parking lots and roads, a lot of the land
where the rain used to soak into the ground is covered up. Instead the rainwater runs off
the hard surfaces and rushes to stormwater gutters and ditches and then overloads creeks
and rivers. Even where there are big expansive lawns in the suburbs… the rain doesn’t
penetrate the ground in the same way it does in the wild. The grass on lawns has shallow
roots and the surface below is compact… where naturally-occurring plants have deep
roots that help the water on its way into the earth.


Don Chen is the Executive Director of the organization Smart Growth America. His
group tries to persuade communities to avoid urban sprawl by building clustering houses
and business districts closer together and leave more natural open space.


“With denser development you have a much lower impact per household in terms of
polluted runoff.”


Chen says the rain washes across driveways and parking lots, washing engine oil, and
exhaust pollutants straight into streams and rivers instead of letting the water filter across
green space.


Besides washing pollutants into the lakes and streams… the sheer volume of water that
can’t soak into the ground and instead streams across concrete and asphalt and through
pipes can cause creeks to rise and rise quickly.


Andi Cooper is with Conservation Design Forum in Chicago. Her firm designs
landscapes to better handle water…


“Flooding is a big deal. It’s costly. That’s where we start talking about economics. We
spend billions and billions of dollars each year in flood damage control.”


Design firms such as Cooper’s are trying to get developers and city planners to think
about all that water that used to soak into the ground, filtering and being cleaned up a bit
by the natural processes.


Smart Growth America’s Don Chen says those natural processes are called infiltration….
and Smart Growth helps infiltration…


“And the primary way in which it does is to preserve open space to allow for natural
infiltration of water into the land so that there’s not as much pavement and hard surfaces
for water to bounce off of and then create polluted runoff.”


People such as Chen and Cooper are bumping up against a couple of centuries or more of
engineering tradition. Engineers and architects have almost always tried to get water
away from their creations as fast and as far as possible. Trying to slow down the water…
and giving it room to soak into the ground is a relatively new concept.


The U.S. Environmental Protection Agency is trying to get communities to give the idea
some consideration. Geoff Anderson is the Acting Chief of Staff for the EPA’s Office of
Policy, Economics and Innovation.


“Anything you can do to keep that water on site and have it act more like it does in its
natural setting, anything you can do to sort of keep that recharge mechanism working,
that’s helpful.”


The EPA does not require that kind of design. It leaves that to local governments and the
private sector. The Conservation Design Forum’s Andi Cooper says sometimes getting
companies to think about treating water as a resource instead of a nuisance is a hard
sell…


“You know, this is risky. People tell us this is risky. ‘I don’t want to do this; it’s not the
norm.’ It’s becoming less risky over time because there are more and more
demonstrations to point to and say ‘Look, this is great. It’s working.’ ”


But… corporate officials are hesitant. Why take a chance on something new? They fear
if something goes wrong the boss will be ticked off every time there’s a heavy rain.
Cooper says, though, it works… and… reminds them that investors like companies that
are not just economically savvy… but also have an environmental conscience.


“A lot of companies are game. They’re open. If we can present our case that yes, it
works; no, it’s not risky; it is the ethical thing to do; it is aesthetically pleasing; there are
studies out there that show you can retain your employees, you can increase their
productivity if you give them open spaces to walk with paths and make it an enjoyable
place to come to work everyday.”


So… doing the right thing for the environment… employees… and making investors
happy… make Wall Street risk takers willing to risk new engineering to help nature
handle some of the rain and get it back into the aquifers and springs that we all value.


For the GLRC… this is Lester Graham.

Related Links

RETHINKING WATER RUNOFF DESIGN (Short Version)

  • Rainwater that falls on paved areas is diverted into drains and gutters. If the rainfall is heavy enough, the diverted water can cause flash flooding in nearby rivers and streams. (Photo by Michele L.)

An Environmental Protection Agency official wants local governments to take a broader view when making land use plans for their communities. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

An Environmental Protection Agency official wants local governments to take a broader view
when making land use plans for their communities. The Great Lakes Radio Consortium’s Lester
Graham reports:


Often planners don’t look past their own city borders when making decisions. Geoff Anderson
wants that to change. He’s the Acting Chief of Staff for the EPA’s Office of Policy, Economics
and Innovation. Anderson says city officials often look at land use planning one site at a time
instead of looking at how their decisions will affect the entire area…


“The two scales are very important and I think in many cases too much is paid to the site level
and not enough is given to the sort of broader regional or community context.”


Anderson says that’s especially important when planning for stormwater drainage. He says too
many communities think about getting the water to the nearest stream quickly without thinking
about how that rushing water might affect flooding downstream.


For the GLRC, this is Lester Graham.

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Report Says Diesel Soot Can Be Cut Faster

  • The health effects of diesel emissions can include increased risks for heart attacks, asthma, and early deaths. The Clean Air Task Force is asking states to do more to clean up these emissions. (Photo by Greg Perez)

A new report says the Midwest is one of the most polluted areas in the country when it comes to soot pollution from diesel exhaust. The environmental research and advocacy group The Clean Air Task Force says much
of this pollution could be cut using available technology. The Great Lakes
Radio Consortium’s Elizabeth Braun reports:

Transcript

A new report says the Midwest is one of the most polluted areas in the country when it comes to soot pollution from diesel exhaust. The environmental research and advocacy group the Clean Air Task Force says much of this pollution could be cut using available technology. The Great Lakes Radio Consortium’s Elizabeth Braun reports:


Three Midwestern states: Illinois, Ohio and Michigan are in the Task Force’s top 10 worst states for diesel pollution. The task force says inhaling diesel soot leads to thousands of heart attacks, early deaths and asthma cases. But, they say the trend can be reversed by limiting the amount of exhaust that’s released into the air.


They say one way to do this is to retrofit schoolbuses to reduce emissions. Renate Anderson is with the American Lung Association. She says children are the most at risk from diesel exhaust.


“School buses… that is a specific danger zone. Children have developing lungs, they tend to breathe about fifty percent more per pound of body weight than adults do.”


The task force also recommends passing legislation to limit how long diesel-engine vehicles can idle. The state of Minnesota has a no-idling policy for school buses, and Illinois lawmakers are currently working on such a measure.


For the GLRC I’m Elizabeth Braun.

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Capturing Waste-Heat in Smokestacks

Engineers say they have a new system that will extract more energy out of coal-fired power plants. And, they say, it has the added benefit of reducing pollution. The Great Lakes Radio Consortium’s Mark Brush reports:

Transcript

Engineers say they have a new system that will extract more energy out
of coal-fired power plants. And, they say, it has the added benefit of
reducing pollution. The Great Lakes Radio Consortium’s Mark Brush
reports:


Coal-fired power plants convert only one-third of the fuel’s energy
potential into electricity. The rest of that energy is heat that’s
lost out the smokestack. Engineers say they’ve now found a way to
capture that heat, transferring its energy into electricity.


Dan Stinger is president of Wow Energies. He says reducing heat in
smokestacks has an added benefit:


“Not only are we able to generate power from waste heat without
consuming fuel, which is an immediate reduction in pollution. But
we’re also able to knock the temperature out of an exhaust stack or
flue gas, and by doing that we condense out a lot of the pollutants
that normally would be exhausted into the environment up a huge exhaust
stack.”


Stinger says a cooler smokestack means fewer pollutants, such as
mercury and chemicals that cause acid rain and ozone, will be sent up
into the atmosphere. Instead, much of that pollution will be condensed
out and trapped. Stinger says the company plans to install its first
small-scale system by the middle of next year.


For the Great Lakes Radio Consortium, I’m Mark Brush.

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Off-Road Diesels to Clean Up

The Environmental Protection Agency says a new rule will cut down on pollution from stationary diesel engines. It applies to industrial equipment like backhoes and forklifts, and to farm tractors. The Great Lakes Radio Consortium’s Stephanie Hemphill reports:

Transcript

The Environmental Protection Agency says a new rule will cut down on pollution from
stationary diesel engines. It applies to industrial equipment like backhoes and forklifts,
and to farm tractors. The Great Lakes Radio Consortium’s Stephanie Hemphill reports:


The EPA says the measure will prevent up to 12,000 premature deaths, a million lost
work days, and 15,000 heart attacks every year.


The new rule aims to do two things: clean up diesel fuel, and clean the exhaust from
diesel engines. Doug Aburano is with the EPA.


“The engine manufacturers have agreed to produce a catalyst that would reduce
emissions from these engines, while we also have an agreement from the diesel producers
to reduce the sulfur content to such an extent that the sulfur would not poison the
catalysts that the engine manufacturers are doing. So you have to do a collaborative
approach like that to get to the huge reductions we’re looking at.”


Aburano says emissions of soot and smog will be cut by 90%. It will take several years
to accomplish that, as businesses and farms replace old equipment. Health and
environmental organizations are welcoming the measure.


For the Great Lakes Radio Consortium, I’m Stephanie Hemphill.

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Earlier Spring Thaws to Accelerate Global Warming?

Satellite imaging shows that spring thaws in the northern latitudes are happening almost a day earlier each year. Environmental scientists worry that faster melts could accelerate global warming. The Great Lakes Radio Consortium’s Corbin Sullivan explains:

Transcript

Satellite imaging shows that spring thaws in the northern latitudes are
happening almost a day earlier each year. Environmental scientists worry
that faster melts could accelerate global warming. The Great Lakes Radio
Consortium’s Corbin Sullivan explains:


The satellite readings show that the spring thaw in
the Alaskan tundra and northern forests is coming
more than a week earlier than it did in 1988.


John Kimball co-authored a study of the NASA
images. He says the greenhouse effect is responsible
for earlier melting. And he warns that faster thaws
could lead to more greenhouse gases in the
atmosphere.


“The potential here is that this warming will
actually reinforce that greenhouse related warming
trend that we’re seeing. That would occur at a much
faster rate.”


Kimball says microorganisms in the arctic soil are
the reason for the increase in heat-trapping gases.


He says the organisms become active when the soil
thaws, breaking down carbon in the soil and
releasing methane and carbon dioxide.


Kimball says an earlier thaw means more
greenhouse gases will be produced each year. That’s
in addition to the gases produced by human sources
like automobiles and power plants.


For the Great Lakes Radio Consortium, I’m Corbin
Sullivan.

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