Updated
12 October, 2003
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US
National Assessment of |
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Figure 26:
Patterns across the US of projected changes in the trends of temperature and
precipitation for the 21st century assuming an emissions profile that moves
toward stabilization of the CO2 concentration at 550 ppmv in the 22nd
century as compared to the baseline case of business as usual (roughly case
IS92a, except with reduced sulfur emissions in CSM). The projected
differences are based on results from: a) NCAR CSM for annual mean
temperature; b) PCM annual mean temperature: c) NCAR CSM annual average
monthly precipitation; and d) PCM annual average monthly precipitation.
Temperature trend differences are given oF per 100 years. Precipitation
trend differences are given in percent, with both trends calculated using a
1980-1999 baseline. Trends are a linear regression through each grid
point. Differences are the differences between the STA trend and the
BAU. |
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