By George Ohring (eds.)
This booklet describes completely the North American weather of the prior sixty five million years, with precise emphasis at the final 21,000 years, as published by way of paleoclimatic observations and weather types. It analyzes climate observations over the last century and satellite tv for pc measurements of the previous couple of many years to improve an image of more moderen climatic tendencies. It explains how worldwide weather types are used to simulate and venture weather, and provides the applying of those types to breed contemporary weather adaptations and are expecting destiny North American weather. It solutions the severe query of even if saw weather swap is because of ordinary adaptations or human activity.
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Extra info for Climate Change in North America
8, except for soil-moisture fraction anomalies of incoming long-wave radiation associated with less cloud radiative feedback. Examples of this effect can be seen in the eastern tropical Pacific in January from 21 to 15 ka, and over Central America in July from 21 to 9 ka (compare Figs. 14). As a consequence, except over the ice sheets where net radiation is strongly affected by albedo, owing to the dominant control of precipitation by omega, the anomaly patterns of P-E strongly resemble those of omega (Fig.
Bartlein et al. 5 5 10 1 20 m/2 00 ka 20 m/s 2 5 10 20 m/2 Fig. 11 As in Fig. e. 500 mb) wind speeds (color) and presentday and anomalous components of 500 mb winds (arrows) and is one of the robust features of paleoclimatic simulations over North America (Bartlein et al. 1998). Overall the wind-speed and direction anomalies, while spatially variable are quite similar over the interval from 21 to 12 ka, and the general pattern is still evident at 9 ka. S. from 12 to 6 ka. The general trends in sea-level pressure between the LGM and present (Fig.
In addition to insolation forcing (Fig. 21a, b), the size of the LIS was a major control of regional climates, and while diminished in size from its full extent at the LGM (21 ka), the residual ice sheets at 12 and 9 ka (Fig. 20d, e) still influenced atmospheric circulation over eastern and central North America in climate simulations for those later times. The records of aridity indicators for the midcontinent generally show relatively dry conditions between 8 and 4 ka. Lake-status records (Fig.
Climate Change in North America by George Ohring (eds.)