摘要
采用合成分析的方法,研究新疆沙雅县沙尘频次的年际变化,冬、春季的全球环流背景(包括高度场、气压场和风场)及沙尘多年与少年的全球海温分布。结果表明,沙雅县沙尘频次有年际变化的特点,并受气温、降水和风速的影响,且与全球范围内的环流异常相联系。除此之外,海温作为外强迫因子对沙尘频次的变化也有很大的作用。
The interannual variability of dust weather frequency （DWF）in Shaya, its global atmospheric circulation background （including the field of geopotential height, atmospheric pressure and wind） and sea surface temperature （SST）distribution were examined based on composite analysis methods in this paper. The results indicated that the interannual variability of DWF was affected by wind speed, temperature and precipitation in winter and spring, and related with anomalous global atmospheric circulation. Besides, SST as a compulsive factor had an influence on the interannual variability of DWF.
出处
《沙漠与绿洲气象》
2011年第4期20-25,共6页
Desert and Oasis Meteorology
关键词
沙尘天气
年际变化
大气环流
海温
dust weather
interannual variability
atmospheric circulation
sea surface temperature
