TEMPORAL AND SPATIAL DISTRIBUTION OF THE DIFFERENT CLOUDS OVER NORTHWESTERN CHINA WITH THE
RELATION TO PRECIPITATION

Chen Yonghang; Huang Jianping; Wang Tianhe; Jin Hongchun; Ge Jinming

Vol.16, NO.6, 2005

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2005 > 16(6): 717-727

Chen Yonghang, Huang Jianping, Wang Tianhe, et al. Temporal and spatial distribution of the different clouds over northwestern China with the relation to precipitation. J Appl Meteor Sci, 2005, 16(6): 717-727.

Citation:

Chen Yonghang, Huang Jianping, Wang Tianhe, et al. Temporal and spatial distribution of the different clouds over northwestern China with the relation to precipitation. J Appl Meteor Sci, 2005, 16(6): 717-727.

Citation:

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TEMPORAL AND SPATIAL DISTRIBUTION OF THE DIFFERENT CLOUDS OVER NORTHWESTERN CHINA WITH THE RELATION TO PRECIPITATION

1.
College of Atmospheric Sciences of Lanz hou University , Lanzhou 730000
2.
Laboratory for Climate Studies , National Climate Center , CMA , Beijing 100081

Received Date: 2004-09-29
Rev Recd Date: 2005-01-27
Publish Date: 2005-12-31

Abstract

Abstract

The temporal and spatial characteristics of the different clouds and the relation to precipitation over Northwest China are analyzed using the ISCCP (International Satellite Cloud Climatology Project) monthly mean D2 data from July 1983 to September 2001. Northwestern China is divided into three climatic regions for the purpose of this study. The results show that the plateau climatic region is the one with highest cumuliform cloud amount with low values of liquid water path. The higher cloud amount value areas for most types, especially for high cloud, are over Tianshan Mountains, Kunlun Mountains, Qilian Mountains, and southern Shaanxi and/or southern Gansu, while the lower values of cloud amounts are located over Tarim Basin, the western desert of Inner Mongolia and the northwestern part of Loess Plateau. Also, cloud amount levels are consistent with levels of precipitation. In general, cloud amounts are higher in spring and summer while lower in autumn and winter. The amounts of stratiform clouds associated with higher liquid water path are consistent with precipitation. The amounts of cumuliform and stratocumuliform clouds, however, do not have definite relation to precipitation。
- Cloud amount;
- Cloud eater path;
- Spatial distribution;
- Seasonal variation;
- Precipitation

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References(14)

Figures and Tables

图 1 ISCCP D2 云分类示意图

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图 2 西北地区分区示意图

■表示A 区，▽表示B 区，×表示C 区

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图 3 西北地区各类云云量多年平均（1983年7月~1998年12月）分布图（单位：%）

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图 4 1984 年1 月～ 1998 年12 月A，B，C 各区9 种冰云和6 种水云云量季节变化

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表 1 1984 年1 月～1998 年12 月A，B，C各区云量的区域平均情况%

表 2 1984 年1 月～ 1998 年12 月A，B，C各区云水路径的区域平均情况g/m²

表 3 1983 年7 月～ 2001 年9 月A，B，C 各区不同降水情况下的云量%降水

References

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