The objectives of this report are (1) to analyze the time related changes and variability in the property and frequency of air masses and the weather extremes over North America; and, (2) to determine to what degree the observed changes agree with the predictions based on climate models. Climate models predict a general increase of surface air temperature and drought over parts of the North American continent due to increased CO{sub 2} concentrations. Regional climate change results in part from the changed frequency of the atmospheric and oceanic circulation patterns and partly from the changed properties of the different air …
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The objectives of this report are (1) to analyze the time related changes and variability in the property and frequency of air masses and the weather extremes over North America; and, (2) to determine to what degree the observed changes agree with the predictions based on climate models. Climate models predict a general increase of surface air temperature and drought over parts of the North American continent due to increased CO{sub 2} concentrations. Regional climate change results in part from the changed frequency of the atmospheric and oceanic circulation patterns and partly from the changed properties of the different air mass types. We plan to investigate the changing frequency and properties of the air mass types focusing on moisture dependent variables and comparing the findings with the results of numerical climate models.
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