近45年中国扬沙和沙尘暴天气

详细信息

收稿日期: 2000-11-10

修回日期: 2000-11-15

刊出日期: 2001-02-25

BLOWING-SAND AND SANDSTORM IN CHINA IN RECENT 45 YEARS

Received Date: 10 November 2000

Revised Date: 15 November 2000

Publish Date: 25 February 2001

摘要: 本文利用1954～1998年中国681个站的气象实测资料,分析了近45年我国扬沙和沙尘暴天气的时空分布特征.结果表明,我国西北、华北、东北和青藏高原地区是扬沙和沙尘暴的主要影响区,其中西北地区是多发区,并有两个明显的高频中心;扬沙和沙尘暴的季节变化大致可划分为3种类型;45年间除青海、内蒙古和新疆的小部分地区扬沙和沙尘暴日数呈增长趋势外,我国北方大部分地区扬沙和沙尘暴日数在减少.进一步分析表明,扬沙、沙尘暴日数与大风日数的年际振荡及多年变化趋势有一致性;70年代以后由大风日数减少所引起的扬沙、沙尘暴减少可能是气候准周期性变化的反映.
- 扬沙 /
- 沙尘暴 /
- 时空分布特征 /
- 东亚冬季风
Abstract: Based on the available high-quality surface-meteorological observation data from 681 stations in China from 1954 to 1998, investigation has been conducted for the temporal and spatial distribution characteristics, especially for interdecadal change and long-term trend of blowing-sand and sandstorm (BSS) in China in recent 45 years.
- blowing-sand /
- sandstorm /
- temporal and spatial distribution characteristics /
- East Asian winter monsoon