Earth Oh Earth..
I feel sad..
Earth oh earth..
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| This image shows ozone concentration over Antarctica in October of 1980 and in 2006. Since climatologists first documented the ozone hole in 1985, it has come to epitomize unintended human effects on Earth’s physical system. The ozone story underscores the important role satellite observations play in helping us understand dynamic changes in Earth’s atmosphere. |
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| Over the past several decades, satellite data have revealed the gradual shrinkage of sea ice on the Arctic Ocean. This image shows the extent of ice in September, 1979 (yellow line), compared to its extent in September, 2005. This is a reduction of more than 20 percent. |
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| Urban sprawl is the most visible evidence of human impact on Earth’s surface. Sprawl transforms habitat, alters water quality and quantity, and heats the land and atmosphere as pavement replaces less heat-absorbing surfaces. The satellite record, including composite images of city lights such as the one shown above, clearly demonstrates the pace and extent of urban sprawl on a planetary scale. |
