中国沙漠 ›› 2019, Vol. 39 ›› Issue (4): 83-91.DOI: 10.7522/j.issn.1000-694X.2018.00094

• • 上一篇    下一篇


蒋盈沙1,2, 高艳红1, 潘永洁1, 李霞1   

  1. 1. 中国科学院西北生态环境资源研究院 寒旱区陆面过程与气候变化重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2018-06-01 修回日期:2018-08-27 出版日期:2019-07-20 发布日期:2019-07-12
  • 通讯作者: 高艳红(
  • 作者简介:蒋盈沙(1990-),女,四川简阳人,博士研究生,主要从事风蚀沙漠化及其模拟研究。
  • 基金资助:

Spatial and Seasonal Distributions of Sand Dusts in Qinghai-Tibet Plateau and Its Surrounding Areas

Jiang Yingsha1,2, Gao Yanhong1, Pan Yongjie1, Li Xia1   

  1. 1. Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-06-01 Revised:2018-08-27 Online:2019-07-20 Published:2019-07-12

摘要: 基于站点观测的沙尘暴数据和卫星遥感(FY-3A)的沙尘数据,分析了青藏高原及塔里木盆地-河西走廊沙尘天气的时空分布特征。结果表明:在空间分布上,沙尘天气发生的次数和强度自塔里木盆地-河西走廊往青藏高原的东南方向递减。季节变化上,沙尘暴在青藏高原主要发生在冬、春季,而在塔里木盆地-河西走廊主要发生在春、夏季,这主要是由于地表大风中心在3月北移、10月南移; FY-3A反演的沙尘天气在两个区域均主要发生在冬、春季,发生强度与观测结果在季节变化上也存在差异。在1980—2007年,青藏高原的沙尘暴发生次数和强度上均呈减弱趋势,塔里木盆地-河西走廊的沙尘暴发生次数减弱而强度增强。

关键词: 青藏高原, 沙尘, 沙尘暴遥感, FY-3A

Abstract: In-situ observed sand-dust storm data and FY-3A dust storm monitoring data were used to analyze the spatial and seasonal distribution of sand-dust weather in Qinghai-Tibet Plateau. Results show that the occurrence frequency and strength of sand-dust weather decrease from the TH to the southeastern QTP. Seasonally, observations show that the QTP has more sand-dust storms in spring and winter, while the TH has more sand-dust storms in spring and summer, mainly because the near-surface high wind speed moves north in March and then moves south in October. However, FY-3A dust storm data show that there is more sand-dust weather in winter and spring for both regions, its occurrence strength of sand-dust weather is also different from the observations seasonally. In 1980-2007, the occurrence frequency of sand-dust storms reduces for most stations in both QTP and TH significantly, but their occurrence strength decreases in QTP while increases in TH.

Key words: Qinghai-Tibet Plateau, sand-dust weather, sand-dust storm remote sensing, FY-3A