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Earth is Becoming a Greener Greenhouse The Temperature Connection: According to ground-based meteorological station temperature measurements, global surface temperatures in 1998 were the warmest in a record that ranges from 1860 to 2000. The rate of temperature change was higher in the past 25 years than during any of the previous 1000 years. On the graphs, the April to October average temperature changes are designated by the red bars. The temperature changes directly correspond to changes in vegetation greenness, shown by the green line. The greenness changes are also April to October averages. The vertical left column designated "Anomaly" represents the temperature and greenness changes from normal. We used data of red and near-infrared solar radiation reflected back to sensors to determine that vegetation north of 40 degrees latitude has become more lush in response to this unprecedented warming.
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Sep-04-2001 |
