Climate Characteristics of Snowfall in Coastal and Mountain Areas of Dandong
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Abstract:
Based on the daily precipitation, weather phenomena, and snow depth of four meteorological stations in Dandong from October to the next April from 1955 to 2010, the climate change characteristics of snowfall in Dandong are studied. The results show that in the coastal area of the southern Dandong and the mountain area of the northern Dandong, there are obvious regional differences in beginning dates, ending dates, interval days, the annual number of days with snow, the annual amount of snowfall, precipitation phase state, daily maximum amount of snowfall, and daily maximum depth. Compared with the mountain area, the beginning date was later, and the ending date was earlier in coastal area; the number of days between beginning and ending dates was smaller, and annual number of snowfall days and annual amount of snowfall were less. Under the background of obviously increasing annual mean air temperature from October to next April from 1955 to 2010, the beginning date was delayed, and the ending date was advanced; the intervals were significantly shortened, and the annual numbers of snowfall days were reduced, especially the percentages of the mixed rain and snow days to snowfall days increased obviously; the amount of snowfall reduced, mainly pure snow, and the daily maximum amount of snowfall and the daily maximum depth decreased; the variation extent is different in the coastal area and the mountain area.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.