摘要
本文利用1971～1980年河西走廊12站地面月半均气候资料,计算并分析了河西走廊地-气之间感热交换的时空变化特征。结果表明:河西走廊各站地面感热通量的年变化与地面净辐射能收支的年变化完全一致,此特点与高原不同;在该区内地面感热通量的年变化有明显的地域差异;功率谱分析发现,该区月平均地面感热通量有显著的准3年周期波动。
In this paper, the 10-year monthly mean surface sensible heat fluxes at 14 stations over Hexi and Tibet Plateau regions have been calculated based on the monthly mean data of the conventional surface observations during the period of 1971～1980, and their annual and spatial variation characteristics have also been analysed. It has been found that their annual variations are quite good agreement with that of surface net radiation, but there are some differences in Hexi and Plateau regions, even in west and east parts of Hexi area. In addition, the results of the power spectrum analyses of monthly mean surface sensible heat fluxes over Hexi region in winter show it is likely that there exists the periodicity about three years.
出处
《高原气象》
CSCD
北大核心
1990年第2期228-234,共7页
Plateau Meteorology
关键词
感热
通量
功率谱
河西走郎
Hexi region
Sensible heat flux
Power spectrum analysis
