October
2009

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Our Vision
The world’s finest educators supporting science, technology, engineering, and math learning for pre-kindergarten to post-graduate students using real-world applications from satellites and satellite data.

Our Mission
To enhance the education environment to excite students about science, technology, engineering, and math through space-based technology – satellites and satellite data.

TABLE OF CONTENTS CLICK ON THE RED LINKS BELOW TO VIEW ARTICLES

One American was in space

9/11: the only American not on Earth remembers watching from space (video)

News from the WMO

Ozone hole smaller in 2009 than 2008: WMO

In

NOAA’s Teacher at Sea Program: A Free Teacher Research Experience

Ground Breaker

SpaceX and Astrium Announce Groundbreaking Deal

News

Alaska's North Slope

News From NOAA

Closing Statement from World Climate Conference-3
And
Australian Dust Storms

News From NASA

Spacecraft Talk Continued During JPL Wildfire Threat
And
Satellites and Submarines Give the Skinny on Sea Ice Thickness
And
Landsat: A Space Age Water Gauge

Education Tools

Geology.com Offers Teaching Resource for Earth Science Information

Go to SEA's Home Page

Visit the Satellite Educators Association home page


9/11: the only American not on Earth remembers watching from space (video)
By: Patricia Phillips
Space News Examiner

As America paused to remember the victims of the 9/11 attacks in 2001, the only American not on Planet Earth that horrific day spoke eloquently of the shock and pain of witnessing from above.

Twin Towers burning, shot from the space station/NASA"Tears don't flow in space," Commander Frank Culbertson, then-commander of the International Space Station's Expedition 3 crew, said.  Culbertson had been launched aboard Space Shuttle Discovery on August 10.

On August 12, the shuttle docked with the ISS. Culbertson's companions after the shuttle left on August 20 were two Russian cosmonauts,  Lieutenant Colonel Vladimir Nikolaevich Dezhurov, Soyuz Commander, and  Mikhail Tyurin, Flight Engineer.

They and the link to Mission Control back home in Houston were what sustained Culbertson as the crew witnessed and filmed the devastation as Twin Towers of the World Trade Center collapsed. The photo to the right was taken by Culbertson as the space station overflew New York City.

"It's difficult to describe how it feels to be the only American completely off the planet at a time such as this," Culbertson told ground controllers. As the tragedy unfolded, Culbertson learned that a friend of his had been flying Flight 93 when its heroic crew and passengers forced its early crash in Pennsylvania, diverting it from another attack in Washington, D.C. Flight 77 crashed into the Pentagon.

Culbertson spoke poignantly of exhaustion and a sense of isolation. He kept reporting their observations, including a "haze" over Washington, D.C., and the "odd bloom" of the smoke rising from the Twin Towers.

NASA was determined that the agency would find a way to honor the victims of 9-11. Then-NASA Administrator Dan Goldin launched the "Flags for Heroes and Families" program.

The crew of mission STS-108 aboard Endeavour carried 6,000 smaill American flags into space. Also aboard: a U.S. flag found at the World Trade Center site after the attacks, a U.S. flag that had flown above the Pennsylvania state capitol, a U.S. Marine Corps Colors flag from the Pentagon, a New York Fire Department flag, and a poster that included photographs of firefighters lost in the attacks.

On Dec. 9, the shuttle and ISS crews paused for a memorial to those who had been lost. It was an emotional ceremony.

The flag found in the Twin Towers rubble "....has a few tears in it. You can still smell the ashes," Endeavour commander Commander Dominic L. Gorie (Captain, USN) said  Culbertson returned home with Gorie and the rest of the Endeavour crew.

Also returning home: the 6,000 flags. NASA later mounted them on specially-designed memorial certificates and presented them to the survivors and families of the 9-11 terrorist attacks. 

NASA  also deployed scientists and resources, including satellite tracking, to help monitor and analyze the environmental effects of the huge smoke and debris clouds from the destruction.

This is the video Culbertson shot and his message to the folks back home. To view the video click here

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Ozone hole smaller in 2009 than 2008: WMO
By:
Tom Spears, Canwest News Service

The World Meteorological Organization said Wednesday that the ozone hole is expected to be smaller in 2009 than a year ago.

"The meteorological conditions observed so far could indicate that the 2009 ozone hole will be smaller than those of 2006 and 2008 and close to that of 2007," said the UN agency in a statement.

The hole in the layer over the Antarctic was discovered in the 1980s. It regularly tends to form in August, reaching a maximum size late September or early October before it fills again in December.

The size is dependent on weather conditions.

This year, the hole began forming "earlier than before," said WMO's expert on the ozone Geir Braathen.

On September 16, it stood at 24 million square kilometers, he said.

In 2008, the maximum reached was 27 million square km while in 2007, the maximum was 25 million square km.

Experts have warned that the damage to the ozone layer, which shields the Earth from harmful ultra-violet rays, is so bad that it will only attain full recovery in 2075.

Ozone provides a natural protective filter against harmful ultra-violet rays from the sun, which can cause sunburn, cataracts and skin cancer as well as damage vegetation.

Its depletion is caused by extreme cold at high altitude and a particular type of pollution, from chemicals often used in refrigeration, some plastic foams, or aerosol sprays, which have accumulated in the atmosphere.

Most of these chemicals, chlorofluorocarbons (CFCs), are being phased out under the 1987 Montreal Protocol, but they linger in the atmosphere for many years.

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SpaceX and Astrium Announce Groundbreaking Deal
By: Reuters

 

Space Exploration Technologies (SpaceX) and Astrium announce a contract for a SpaceX Falcon 1e to launch an Earth observation satellite designed by Astrium or its recently acquired subsidiary Surrey Satellite Technology (SSTL).

The Falcon 1e is an `enhanced` version of SpaceX`s successful Falcon 1 launch vehicle. Designed from the ground up by SpaceX, the Falcon 1e has upgraded propulsion, structures and avionics systems in order to further improve
reliability and bring to market increased mass-to-orbit capability to better serve the needs of the small satellite community.

Astrium and SSTL provide a range of innovative, cutting edge Earth Observation satellite products and through this agreement will be able to offer customers a turnkey solution, with in-orbit delivery of a low Earth orbit satellite system.

The partnership between SpaceX and Astrium paves the way for potential future cooperation.

"SpaceX`s Falcon 1e launch vehicle was designed to provide the highest level of reliability as well as the lowest dedicated mission price of any orbital launch system," said Elon Musk, CEO and CTO of SpaceX. "SpaceX is pleased to be the
launch services provider for this mission."

"This Falcon 1e contract allows Astrium to provide a competitive solution for in-orbit delivery of an Earth observation satellite in low Earth orbit," said Evert Dudok CEO of Astrium Satellites. "This deal will ultimately benefit customers seeking innovative and low-cost solutions for valuable Earth observation programs."

SPACEX
 

About SpaceX

SpaceX is developing a family of launch vehicles and spacecraft intended to increase the reliability and reduce the cost of both manned and unmanned space transportation, ultimately by a factor of ten. With the Falcon 1 and Falcon 9
vehicles, SpaceX offers highly reliable/cost-efficient launch capabilities for spacecraft insertion into any orbital altitude and inclination. Starting in 2010, SpaceX's Dragon spacecraft will provide Earth-to-LEO transport of
pressurized and unpressurized cargo, including resupply to the International Space Station (ISS).

 

Founded in 2002, SpaceX is a private company owned by management and employees, with minority investments from Founders Fund and Draper Fisher Jurvetson. The SpaceX team now numbers over 800, with corporate headquarters in Hawthorne,
California. For more information, please visit the company's web site at http://www.spacex.com.

SpaceX
Emily Shanklin | Director, Marketing and Communications
310-363-6733
media@SpaceX.com

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Closing Statement from World Climate Conference-3
Dr. Jane Lubchenco, Head of the United States Delegation

Improving development and delivery of climate services offers untold economic, environmental, human health, and national security benefits.  For these reasons, the U.S. delegation is very pleased with the outcome of this conference, and its decision to establish a Global Framework for Climate Services.

Today, user demands for climate information are increasing rapidly.  Decision-makers at all levels of government, business leaders, civil society and individual citizens are asking how they can best prepare their communities, businesses or lives for the impacts of climate change.

Lives, prosperity and social stability are at stake.

We must now seize the opportunity to use the science-based information about climate change and variability and translate it into meaningful information that can be used to inform critical decisions.

That the United States was both a sponsor and participant in this conference reflects President Obama’s strong commitment to addressing climate change.  Climate change is a shared challenge.  The declaration agreed to here unites all countries in recognizing the need for climate services.

As we head into Copenhagen we are heartened by the spirit of cooperation and commitment. The United States is working actively toward a successful agreement through ambitious domestic actions and international cooperation.

This morning’s announcement that President Obama will deliver an opening speech at the UN High Level Summit on Climate Change in New York later this month further demonstrates our country’s commitment to tackling this issue.

The full closing statement by Dr. Lubchenco will be found by clicking here

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NOAA’s Teacher at Sea Program: A Free Teacher Research Experience

Now Accepting Applications for 2010 Field Season
Application Deadline: December 31, 2009

For more information visit our website at http://teacheratsea.noaa.gov


Are you an educator interested in gaining first-hand research experience on an ocean research ship?
If so, we encourage you to explore the opportunities offered by the National Ocean and Atmospheric Administration's (NOAA) Teacher at Sea program, now accepting applications until December 31, 2009. 

About NOAA's Teacher at Sea Program
The mission of NOAA’s Teacher at Sea program is to give teachers a clearer insight into our ocean planet, a greater understanding of maritime work and studies, and to increase their level of environmental literacy by fostering an interdisciplinary research experience.

Since 1990, NOAA’s Teacher at Sea Program has enabled more than 550 teachers to gain first-hand experience of science and life at sea by working on research ships.  Teachers have enriched their classroom curricula with a depth of understanding made possible by living and working side-by-side, day and night, with those who contribute to the world's body of scientific knowledge.  No matter which type of cruise you embark on, you are bound to learn an array of new things!

Who May Apply
NOAA's Teacher at Sea program accepts applications from currently employed, full-time educators in these categories: K-12 teachers and administrators; community college, college, and university teachers; museum and aquaria educators; and adult education teachers. We regret that we cannot accept applications from part-time, substitute, or pre-service teachers.

Types of Cruises
Participants are assigned a cruise aboard one of NOAA's 17 ships (or a chartered partner ship). NOAA conducts three main types of cruises.  Fisheries research ships perform biological and physical science studies in support of fisheries research.  Oceanographic and coastal research ships perform physical science studies in support of physical oceanography, atmospheric studies, and bathymetric mapping.  Hydrographic survey ships scan the coastal sea floor with side-scan sonar and sophisticated bottom sounding systems to locate submerged obstructions and navigational hazards for the creation or update of the nation's nautical charts.

Time Commitment
Participants can expect to be at sea anywhere from one week to one month, with the average cruise lasting 12-14 days.  Most of our participants try to sail on cruises offered during the summer vacation, but cruises take place throughout most of the year on a space-available basis.

Costs
All necessary travel costs are paid for by NOAA's Teacher at Sea Program.  While airfare is paid for up front by the government, all other costs are reimbursed, including transportation costs, hotel costs, and per diem allowance.

For more information please visit our Web site at http://teacheratsea.noaa.gov

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Alaska's North Slope

A rare, sunny day across Alaska’s North Slope on September 5 provided a clear view from outer space of North America’s largest oil field.

When NASA’s Terra satellite passed over Prudhoe Bay at midday on Saturday, the waning sun of summer had managed to warm the air at the Deadhorse airport, near the shores of the Arctic Ocean, to a balmy 64 degrees.

In the image to the right captured by the MODIS sensor on Terra, thousands of small lakes can be seen dotting the tundra — in a region normally frozen over except for a brief period of time between June and September.

Because of a layer of permafrost less than 3 feet beneath the surface, the melted snow has no place to soak into the soil.

That results in an abundance of small lakes and ponds, which turn into breeding grounds for voracious swarms of mosquitoes each summer.

Oil was discovered beneath Prudhoe Bay on March 12, 1968, by engineers from what is now called ARCO, and Exxon. It was soon estimated that there were about 25 billion barrels of oil lying beneath the tundra and adjacent coastal waters of the Arctic Ocean.

The 1973 oil crisis quickly made it economically feasible to not only drill more than 1,000 wells in America’s most remote region, but also to construct a pipeline across the state to deliver the crude to tanker ships. The Tran-Alaska Pipeline was completed in 1977, and extends 800 miles south from Prudhoe Bay to the Valdez Marine Terminal.

Between 1977 and 2005, 13 billion barrels of oil were transported through the pipeline. Production peaked in 1998 at 2 million barrels per day, but had fallen to only 943,000 per day by 2005.

The once vast oil reserve was contained in porous rock formations between 5,000 and 20,000 feet beneath the surface. But it has been able to rise to the wellheads under its own geologic pressure, eliminating the need for pumping.

Thirty years of extraction from wells around Prudhoe Bay, and a vast network of satellite oil fields to the east and west, has considerably depleted the amount of oil beneath the region.

British Petroleum estimated in 2006 that only 2 billion barrels of oil remain that can be acquired with current technology.

 

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Satellites and Submarines Give the Skinny on Sea Ice Thickness

This summer, a group of scientists and students — as well as a Canadian senator, a writer, and a filmmaker — set out from Resolute Bay, Canada, on the icebreaker Louis S. St-Laurent. They were headed through the Northwest Passage, but instead of opening shipping lanes in the ice, they had gathered to open up new lines of thinking on Arctic science.

Among the participants in the shipboard workshop (hosted by Fisheries and Oceans Canada) was Ron Kwok of NASA's Jet Propulsion Laboratory in Pasadena, Calif. Kwok has long provided checkups on the health of Arctic sea ice — the frozen sea water floating within the Arctic Ocean basin. He also knows that some important clues about ice changes can't be seen from a ship.

Extending the Record

While satellites provide accurate and expansive coverage of ice in the Arctic Ocean, the records are relatively new. Satellites have only monitored sea ice extent since 1973. NASA's Ice, Cloud, and land Elevation Satellite (ICESat) has been on the task since 2003, allowing researchers to estimate ice thickness as well.

To extend the record, Kwok and Drew Rothrock of the University of Washington, Seattle, recently combined the high spatial coverage from satellites with a longer record from Cold War submarines to piece together a history of ice thickness that spans close to 50 years.

Analysis of the new record shows that since a peak in 1980, sea ice thickness has declined 53 percent. "It's an astonishing number," Kwok said. The study, published online August 6 in Geophysical Research Letters, shows that the current thinning of Arctic sea ice has actually been going on for quite some time.

"A fantastic change is happening on Earth — it's truly one of the biggest changes in environmental conditions on Earth since the end of the ice age," said Tom Wagner, cryosphere program manager at NASA Headquarters. "It's not an easy thing to observe, let alone predict, what might happen next."

Sea ice influences the Arctic's local weather, climate, and ecosystems. It also affects global climate. As sea ice melts, there is less white surface area to reflect sunlight into space. Sunlight is instead absorbed by the ocean and land, raising the overall temperature and fueling further melting. Ice loss puts a damper on the Arctic air conditioner, disrupting global atmospheric and ocean circulation.

To better identify what these changes mean for the future, scientists need a long-term look at past ice behavior. Each year, Arctic ice undergoes changes brought about by the seasons, melting in the summer warmth and refreezing in the cold, dark winter. A single extreme melt or freeze season may be the result of any number of seasonal factors, from storminess to the Arctic Oscillation (variations in atmospheric circulation over the polar regions that occur on time scales from weeks to decades).

But climate is not the same as weather. Climate fluctuates subtly over decades and centuries, while weather changes from day to day and by greater extremes.

"We need to understand the long-term trends, rather than the short-term trends that could be easily biased by short-term changes," Kwok said. "Long-term trends are more reliable indicators of how sea ice is changing with the global and regional climate."

That's why a long-term series of data was necessary. "Even decadal changes can be cyclical, but this decline for more than three decades does not appear to be cyclical," Rothrock said.

All the Ice Counts

Arctic sea ice records have become increasingly comprehensive since the latter half of the 20th century, with records of sea ice anomalies viewed from satellites, ships, and ice charts collected by various countries. Most of that record, kept in the United States by the National Snow and Ice Data Center at the University of Colorado, Boulder, describes the areal extent of sea ice.

But a complete picture of sea ice requires an additional, vertical measurement: thickness. Melting affects more than just ice area; it can also impact ice above and below the waterline. By combining thickness and extent measurements, scientists can better understand how the Arctic ice cover is changing.

Kwok and other researchers used ICESat’s Geoscience Laser Altimeter System to estimate the height of sea ice above the ocean surface. Knowing the height, scientists can estimate how much ice is below the surface.

Buoyancy causes a fraction (about 10 percent) of sea ice to stick out above the sea surface. By knowing the density of the ice and applying "Archimedes' Principle" — an object immersed in a fluid is buoyed by a force equal to the weight of the fluid displaced by the object — and accounting for the accumulation of snowfall, the total thickness of the ice can be calculated.

In 2008, Kwok and colleagues used ICESat to produce an ice thickness map over the entire Arctic basin. Then in July 2009, Kwok and colleagues reported that multiyear 'permanent' ice in the Arctic Ocean has thinned by more than 40 percent since 2004. For the first time, thin seasonal ice has overtaken thick older ice as the dominant type.

Submarines and Satellites

To put the recent decline in context, Kwok and Rothrock examined the recent five-year record from ICESat in the context of the longer history of ice thickness observed by U.S. Navy submarines.

During the Cold War, the submarines collected upward-looking sonar profiles, for navigation and defense, and converted the information into an estimate of ice thickness. Scientists also gathered profiles during a five-year collaboration between the Navy and academic researchers called the Scientific Ice Expeditions, or "SCICEX," of which Rothrock was a participant. In total, declassified submarine data span nearly five decades—from 1958 to 2000—and cover a study area of more than 1 million square miles, or close to 40 percent of the Arctic Ocean.

Kwok and Rothrock compared the submarine data with the newer ICESat data from the same study area and spanning 2003 to 2007. The combined record shows that ice thickness in winter of 1980 averaged 3.64 meters. By the end of 2007, the average was 1.89 meters.

"The dramatic decrease in multiyear ice coverage is quite remarkable and explains to a large degree the decrease in total ice area and volume," Kwok said.

Rothrock, who has worked extensively with the submarine data, agrees. "This paper shows one of the most compelling signals of global warming with one of the greatest and fastest regional environmental impacts."

Ice Through Human Eyes

While it is critical to keep monitoring the Arctic with satellites and aircraft, Kwok believes there is also a benefit in physically standing in a place and seeing the changes through human eyes—particularly for non-scientists, who do not keep a close watch on sea ice.

The August 2009 workshop in the Northwest Passage brought together an eclectic group of politicians, artists, and scientists to see the ice firsthand. The challenge was to see the problem of a changing Arctic environment from a variety of scientific, political, cultural and human perspectives and to discuss the future of collaborative study in the Arctic. The science of sea ice has implications for people’s livelihoods, for long-established ecosystems, and for opening a new part of the world to exploration and exploitation.

The workshop participants now take their experiences and observations back to warmer climates, where there is sometimes less urgency about ice retreat.

"Sea ice is about more than just hard science; it's a geopolitical and human issue," Kwok noted. "There is a big personal impact when you get away from your desk and see it in person."

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Australian Dust Storms

Australian dust storm.Dust storms in Australia, like the one happening right now, could become more common according to climate research funded by the NOAA Climate Program Office.

Changes in the amount of atmospheric dust in Eastern Australia are associated with local wind variations that the researchers related to changes in the behavior of the Pacific climate system. While Australia has experienced a relatively dust-free period since the 1970s, the U.S.-based researchers predict this prolonged pattern will likely change and perhaps soon.

In addition, they found that the amount of sunshine over northern New Zealand also is connected to the Pacific climate system.

“This current dust storm has been produced by an individual weather system that is rather classic in terms of picking up dust in Eastern Australia. We know these systems were much more common from the late 1950s to early 1970s, followed by a period of suppressed dust,” said Peter Lamb of the NOAA-funded Cooperative Institute for Mesoscale Meteorological Studies. “A reversal in the climate system’s behavior has been anticipated since at least the end of the 1990s.”

Learning From the Past

The climate researchers analyzed surface dust observations during the past 50 years in Central Eastern Australia and found significant fluctuations linked to climate conditions in the Pacific Ocean and other key environmental conditions across the southwest Pacific including northern New Zealand sunshine.

The researchers found that from 1959 to 1973, Australia saw the largest number of dust storms, followed by a sharp decline from 1973 to 1976. The country experienced a much more dust-free period from 1977 to 2006. Northern New Zealand sunshine decreased markedly from the earlier to later period. Earlier this decade, the researchers detected signs that the Pacific climate system could shift back to its earlier pattern.

“This is a very important study of the drivers of variability of Eastern Australian dust. Atmospheric dust transport profoundly affects the Australian environment and agriculture, and dust storms can pose serious hazards to human health and the built environment,” said Matthew England, director of the Climate Change Research Centre at The University of New South Wales. “This work will help us better understand future changes in dust activity over our region, which will be a major benefit to many sectors of society.”

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Spacecraft Talk Continued During JPL Wildfire Threat

As the flames of the raging brush fire dubbed the Station Fire threatened the northern edge of NASA's Jet Propulsion Laboratory on Saturday, Aug. 29, the managers of NASA's Deep Space Network prepared for the worst.

The Deep Space Operations Center at JPL is the nerve center for the Deep Space Network, an international network of antennas that send and receive information to interplanetary spacecraft. Staffed 24/7, 365 days a year, the JPL hub is constantly active connecting three major antenna sites, numerous mission operation centers run by NASA and an international group of space agencies, and more than 30 spacecraft flying throughout our solar system.

"We were more like the nervous center that weekend than the nerve center," said Wayne Sible of JPL, the network's deputy program manager for Deep Space Network development, operations and services.

The Deep Space Network operations managers knew that, fire or no fire, time was critical for sending software programs to and downloading diagnostic information from several spacecraft, including the Mars Reconnaissance Orbiter, which had an unexpected computer reboot the day the fire started on Aug. 26, and the Dawn spacecraft, on its way to the asteroid belt.

The network's antennas that send and receive information to spacecraft, located at Goldstone, in California's Mojave Desert; near Madrid, Spain; and near Canberra, Australia, were never in danger. But Sible and Jim Hodder, the network's operations manager, got word on Friday, Aug. 28, that the Station fire, which started in the San Gabriel Mountains above the Laboratory, was burning towards JPL. Emergency managers and senior JPL administrators called for JPL to be closed, except for essential personnel, on Friday evening.

A flurry of phone calls followed -- to the Deep Space Network team, the mission operation centers and ITT Systems Division, the contractor that provides the operators for the operations center at JPL.

On a phone call with Hodder, the team decided to move network operators to a facility in Monrovia, Calif., where other support work is normally conducted for the Deep Space Network. The Monrovia building - about 15 miles from JPL -- offered basic access to the critical systems, though the operators would not be able to use personalized computer scripts or notes that facilitate their work.

It seemed practical, since activating the emergency control center at the Goldstone complex in California's Mojave Desert would be more disruptive and require some suspension of communications while they moved staff 150 miles to that location.

Two of the five Deep Space Network operators on weekend duty were sent to Monrovia, but three volunteered to stay at the control center at JPL, to ensure systems continued to operate normally, to keep connections open with the flight projects, and to maintain the flow of engineering and science data to flight projects and scientists around the globe.

The three who stayed at JPL - along with about 40 other mission-critical personnel at any given time - were told not to spend much time outside. Hodder called frequently to check on the health of the crew and to obtain status reports on the network.

On Saturday afternoon, Sible and Hodder were ready to pull out those remaining three operators and put further communications with the network on hold if the fire reached the Mesa, a flat helipad and testing site at the northern edge of JPL.

That afternoon, the fire burned to within an eighth of a mile of the northern border of the lab. Emergency managers told staff to be ready to evacuate in 30 minutes.

Thankfully, with fire department handcrews cutting firebreaks, helicopters and fixed-wing aircraft dropping water and flame retardant, and the wind shifting, the danger passed on Saturday night. An unpleasant haze of smoke settled on the lab, but the air had cleared enough for the network operators in Monrovia to return to JPL Monday evening. The rest of JPL opened as usual on Tuesday morning at 6 a.m.

In the end, the Deep Space Network was able to complete its 182 scheduled uploading and downloading sessions with spacecraft over the weekend without interruption.

"It went very well," Sible said. "Nobody saw any hiccups whatsoever."

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M.Y. S.P.A.C.E. Photos from the 2008 conference posted.
Click Here

Artist concept of the albedo effect

Be a M.Y. S.P.A.C.E. Teacher
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to find out how

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Landsat: A Space Age Water Gauge
By: Jennifer Shoemaker, NASA Earth Science Multimedia Team
Image from video showing new method of mapping water consumption from space

NASA has released a video illustrating an innovative satellite-based method that maps agricultural water consumption. The new mapping tool, based on Landsat satellite data, received a prestigious Innovations In American Government award from Harvard University’s Ash Institute on September 14.

Water specialists Rick Allen, Bill Kramber and Tony Morse use Landsat thermal band data to measure the amount of water evaporating from the soil and transpiring from plants’ leaves – a process called evapotranspiration. Evapotranspiring water absorbs energy, so farm fields consuming more water appear cooler in the thermal band. The Landsat observations provide an objective way for water managers to assess on a field-by-field basis how much water agricultural growers are using. The team’s measurements have even been used to help settle water rights conflicts in court.

In addition to featuring interviews and Landsat imagery, the video demonstrates visually how Landsat captures images in both the visible spectrum and thermal band, and shows a resulting evapotranspiration map created using the mapping tool.

Landsat is a joint program of NASA and the US Geological Survey.

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Geology.com Offers Teaching Resource for Earth Science Information
By: URL Wire
Posted by Eric Ward on 8/25/09

http://www.Geology.com

Geology.com is a website for teachers, students, geologists and anyone with an interest in the Earth. Every day several thousand people receive Geology.com’s earth science news updates by email, RSS feed and Twitter. These will keep you informed about topics such as energy, resources, climate change and natural hazards.

Geology.com is updated daily with news releases, articles, teaching ideas and earth science reference materials. The site also features an earth science glossary, rock and mineral photo galleries, printable time scale, mineral identification chart.

Geology.com is a popular destination for teachers and students. Earth science teachers will find teaching ideas, rock photos that can be used with computer projection, ideas for teaching plate tectonics with easy-to-draw illustrations and much more. Geology.com's extensive collection of reference maps is popular with social science teachers.

About Geology.com
Geology.com serves as a portal to geology and earth science information across the Web. It is published by Hobart M. King, Ph.D., a licensed geologist who has experience as an educator and practicing geologist. Dr. King can be reached at 570-439-0324 or via Geology.com.

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