排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
The spatio-temporal variation of surface sensible heat flux (SHF) in
southern China (SC) is studied based on the data evaluated from conventional
observational meteorological data. There exist prominent increasing trends in all
seasonal surface sensible heat fluxes in the western SC and decreasing trends in
the central-eastern part of southern China. The variations of surface sensible
heat flux in all seasons are dominant on interannual time-scales. The land-air
temperature difference and the near-surface wind speed are two key factors for
the interannual variations of SHF, but the former is more important. The first
two major anomalous patterns of SHF are presented as the region-wide in-phase
anomalies and the east-west dipole anomalies, respectively, based on the EOF
analysis results. 相似文献
2.
利用1968~2008年NCEP/NCAR再分析资料、中国测站的降水量和温度资料,分析亚洲冬季大气动能的时空演变特征,探讨与其对应的大气环流异常特征以及大气动能的变异与我国降水量和温度异常的联系。结果表明:亚洲冬季大气动能的主要变异中心在东亚西风急流区,该地区的冬季大气动能存在明显的年际和年代际变化。冬季,我国中东部至日本以东到西北太平洋上空大气动能的减弱(增强)与对流层中高层东亚西风急流的减弱(增强)密切相关,并可导致我国东部大部分地区降水量的偏多(偏少)和我国东北地区温度的偏高(偏低)。青藏高原西南侧大气动能的增强(减弱)则与该地区对流层中高层南亚西风急流的增强(减弱)有关联,并导致冬季我国东南地区降水量的偏多(偏少)和我国广西、贵州和四川一带温度的偏低(偏高)。在冬季,亚洲大气动能的变化可能主要通过影响亚洲西风急流的变化来造成我国冬季气候的变异。 相似文献
3.
1