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Arctic Sea Ice News & Analysis3543 viewsThis image compares the average sea ice extent for September 2007 to September 2005; the magenta line indicates the long-term median from 1979 to 2000. September 2007 sea ice extent was 4.28 million square kilometers (1.65 million square miles), compared to 5.57 million square kilometers (2.14 million square miles) in September 2005. This image is from the NSIDC Sea Ice Index.
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1371 viewsThis image shows the annual climatology melt for 2007 from Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data.
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Allan Hills1504 viewsThe Allan Hills are located on the flanks of the TransAntarctic Mountains. Ice upwells onto the hills where combinations of winds and solar insolation cause the ice to quickly ablate. Meteorites that once fell over a large region of East Antarctica have been carried by glacier motion into this small locality.
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AVHRR Spatial Coverage591 viewsAVHRR Spatial Coverage Map of the Northern Hemisphere from the AVHRR Polar 1 km Level-1B Data Set. Blue boxes indicate individual AVHRR scenes for a single day.
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Ross Ice Shelf2373 viewsAVHRR image of West Ross Ice Shelf, Antarctica on 27 January 2001.
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Sea Ice1081 viewsArctic sea ice image produced from daily-averaged QuikSCAT sigma-0 measurements from NASA SCP Arctic and Antarctic Ice Extent from QuikSCAT, 1999-2004 Dataset.
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CLPX Map592 viewsMap showing the study areas from the Cold Land Processes Field Experiment. CLPX Web site
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Antarctic Snow Dunes1655 viewsExtensive snow dunes wrinkle the surface of large parts of East and West Antarctica. The dunes are up to 100 kilometers long and separated by 2 to 4 kilometers, but only a few meters high. Comparison of modern satellite images with images acquired four decades earlier reveals that the dunes are nearly motionless.
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595 viewsA sample browse image of SSM/I brightness temperature data for the Northern Hemisphere 25-km EASE-Grid, 37 GHz, horizontally polarized brightness temperatures for descending passes only acquired on 01 January 2008 from the DMSP SSM/I Pathfinder Daily EASE-Grid Brightness Temperatures data set.
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CLPX Tower502 viewsTower used to collect data during the 2002 Cold Land Processes Field Experiment. CLPX Web site
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CLPX779 viewsScientists check on a weather station during the 2002 Cold Land Processes Field Experiment. CLPX Web site
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Fimbul Ice Shelf1630 viewsThe Fimbul Ice Shelf is punctuated by numerous ice rises that occur where isolated rocky islands are covered by ice. Ice shelves may be particularly sensitive to changes in climate, and recently ice shelves in the Antarctic Peninsula have experienced rapid retreat
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