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Earth Observatory

by Donald Perkey - Thursday, July 20, 2006, 12:27 PM
 
http://earthobservatory.nasa.gov/

NASA’s Earth Observatory provides a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The focus is on Earth’s climate and environmental change. In particular, we hope our site is useful to public media and educators.

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Earth Observatory – 2005 Ozone Hole

by Donald Perkey - Thursday, July 20, 2006, 1:51 PM
 
http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17116

Movie and discussion of 2005 ozone hole

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Earth Observatory – Aerosols and Climate Change

by Donald Perkey - Thursday, July 20, 2006, 1:44 PM
 
http://earthobservatory.nasa.gov/Library/Aerosols/aerosol.html

Aerosol affects on climate

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Earth Observatory – Glaciers

by Donald Perkey - Thursday, July 20, 2006, 2:01 PM
 
http://earthobservatory.nasa.gov/Study/GLIMS/

Sizing up the Earth’s Glaciers

http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16760

Retreating Terminus of the Jakobshavn Isbrae Glac

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Earth Observatory - Chlorophyll Concentrations

by Donald Perkey - Thursday, July 20, 2006, 1:10 PM
 
http://earthobservatory.nasa.gov/Observatory/Datasets/chlor.czcs.html

Microscopic marine plants (called phytoplankton) contain chlorophyll, a green pigment they use during photosynthesis. Using satellite sensors, we can measure chlorophyll concentrations in oceans, lakes and seas to indicate the distribution and abundance of phytoplankton. Phytoplankton are the base of the marine food chain and, therefore, are a good indicator of the abundance of life in a body of water.

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Earth Observatory - Winter Snowpack

by Donald Perkey - Thursday, July 20, 2006, 1:28 PM
 
http://earthobservatory.nasa.gov/Observatory/Datasets/snow.modis.html

Scientists monitor global snow cover to better understand short- and long-term environmental and climatic conditions. On a seasonal scale, the depth and extent of the winter snowpack influence water availability and soil moisture, which, in turn, affect agriculture and wildfire potential. In many places around the world, the melting of the winter snowpack is the major source of fresh water in the spring and summer.

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Earth Resources Observation Systems (EROS) Data Center (EDC)

by Donald Perkey - Thursday, July 20, 2006, 12:53 PM
 
http://edcwww.cr.usgs.gov/

The Earth Resources Observation Systems (EROS) Data Center (EDC) is a data management, systems development, and research field center for the U.S. Geological Survey's (USGS) National Mapping Division.

El Nino

by Brian Etherton - Thursday, July 20, 2006, 3:49 PM
 
For a truly scientific illustration of the power of El-Nino,

Please see El Nino


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Elementary Meteorology Practice Quiz

by arlene laing - Wednesday, July 19, 2006, 2:48 PM
 
 
Dr. Alistair Fraser's Elementary Meteorology Quiz

http://www.ems.psu.edu/~fraser/Quizzes/Met1Quiz/Met-quiz.cgi



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Energy and Radiation

by arlene laing - Thursday, July 20, 2006, 11:44 AM
 

Energy Budget Simulation

http://www.pals.iastate.edu/simulations/library/budgetsim/index.html

This applet simulates theenergy intake of our atmosphere during the day and the loss of energy at night. Users can vary the intensity of the sun during the day. A tub of water fills up symbolically showing the energy intake of our atmosphere







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