Climate

South Park is sheltered from cyclone storms by continuous mountain belts on the north, west, and east. Little precipitation falls on the park floor during the winter, and snow is quickly redistributed by wind into drifts, leaving many areas relatively free of snow and exposed to the action of wind and frost (figure 3.4). In the highest mountain areas, abundant winter snow falls, and as in other high mountain regions in Colorado this snow provides the bulk of the annual precipitation.

South Park's only weather stations are located on the park floor, and the only station with records dating back more than a few years is the one at Antero Reservoir. Mean annual precipitation at Antero is 258 mm, although pan evaporation is 865 mm, 3.35 times precipitation (Spahr, 1981). An average of less than 1 cm of precipitation falls during each of the three

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