This paper studies weather-climate features and laws of spatial and temporal distri-bution of night rains and advances the decrease or disappearance of topographic effect gradually with the rise of elevation and the night rainfall more than daytime rainfall in the middle-lower layers in mountainous regions. The more night rainfall is caused prin-cipally by both rainfall hours and rainfall density. The phenomenon of "clear in daytime and rain at night"appears in some mountains and altitudes. The night rain appears prin-cipally in growing seasons, especially in April to May of spring sowing and in July to August of autumn crop in the milk-filling and milk stage. According to the meteorologi-cal data(1989-1990) from stations in different sloping positions and altitudes above sea level. Monthly rainfall of both daytime and night and the rain days in mountainous re-gions in the western part of subtropical zone were counted. The night rain resources will become an important basis for preventing drought countermeasures in mountainous re-gions in the western part of subtropical zone.
Zhang Yangcai, Ye Yifang
. AN AGROCLIMATIC STUDY ON NIGHT RAIN FEATURES IN MOUNTAINOUS REGIONS IN THE WESTERN PART OF SUBTROPICAL ZONE IN CHINA[J]. SCIENTIA GEOGRAPHICA SINICA, 1994
, 14(1)
: 30
-37
.
DOI: 10.13249/j.cnki.sgs.1994.01.30
[1] 林之光.我国的地形性夜雨.气象,1982.8(6):18~20.
[2] 张家诚,林之光.中国气候.上海:上海科技压版社,1985. 198~203.