青藏高原季风变化及其与中国北方春季沙尘暴的关联  

Change of monsoon in Qinghai-Xizang Plateau and its correlation with spring's duststorm in northern China

作　　者：唐红玉[1] 马振峰[2] 史津梅[1] 

机构地区：[1]青海省气象台,青海西宁810001 [2]中国气象局成都高原气象研究所,四川成都610071

出　　处：《自然灾害学报》2008年第3期112-116,共5页Journal of Natural Disasters

基　　金：国家自然科学基金(40375031)资助

摘　　要：利用1948-2003年的逐日600 hPa 2.5°×2.5°NCEP/NCAR再分析资料和1957-2003年中国北方地区春季沙尘暴日数资料,计算了反映青藏高原地区季风特征的高度场指数序列,分析了青藏高原高度场指数的年代际变化。结果表明:近56年来,高原季风指数总体呈现冬季风减弱、夏季风增强的变化趋势;高原季风的变化与我国北方地区春季沙尘暴的多寡密切相关,高原冬季风偏强的年份,我国北方地区春季沙尘暴偏多,而高原冬季风偏弱的年份,我国北方地区春季沙尘暴偏少。Based on daily reanalysis data of 600 hPa and 2.5°- 2.5° NCEP/NCAR for period from 1948 to 2003 and the data of spring＇s duststorm days in northren China during 1957 - 2003, the height field index series indicating monsoon characters in Qing-Xizang plateau was calculated and the deeadal change of the index was analyzed. In recent 56 years, the change of plateau monsoon index appears with decrease in winter and increase in summer, and the change related closely to quantity of spring＇s duststorm in northren China. In the years with plateau winter monsoon on the strong side, there are more spring＇s duststorms in northren China, and vice versa.

关 键 词：青藏高原 季风指数 中国北方 沙尘暴 相关分析 

分 类 号：P425.42[天文地球—大气科学及气象学] P425.55