Studying Snow and Ice Changes
From NASA My NASA Data
Scientists have recently been reporting that the average temperature of the Earth has been rising, usually referred to as 'global warming'. What is the evidence for this change? One piece of evidence could come from patterns of snow (on land) and ice (either sea ice floating on the oceans or glaciers on land) on the Earth - if the snow and ice are disappearing, it would indicate rising average temperatures. This exercise is meant to examine the pattern of snow and ice on the Earth to determine what trends are visible. Students will create maps that show the average of a year's worth of snow and ice data for the entire Earth, by using MY NASA DATA's 'Define Variable' procedure. This will be done for 2 years, 1994 and 2004. Then they will use the 'Compare Two' capability to find the difference between the 2 average maps (i.e., subtract the 1994 value from the 2004 value in all corresponding locations on the map), to see how the averages have changed in all locations between the 2 years.
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This product is free and clear for general use.
DLESE Catalog ID: MYND-000-000-000-100
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Contact: Dr Lin Chambers