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Changes in extreme precipitation events over the Hindu Kush Himalayan region during 1961e2012

         

摘要

Based on a new multi-source dataset (GLDP-V1.0) recently developed in China Meteorological Administration, we employed precipitation indices including percentile-based indices of light (below the 50th percentile), moderate (between the 50th and 90th percentile), and intense (above the 90th percentile) precipitation, maximum 1-day, 3-day, and 5-day precipitation amounts (RX1DAY, RX3DAY, and RX5DAY, respectively), and consecutive wet and dry days (CWDs and CDDs) to analyze variations in extreme precipitation events in the Hindu Kush Himalayan (HKH) during 1961e2012. The main results are presented as follows. Firstly, there was a significant increase in the amount of light and moderate precipitation and number of associated days over various parts of India and northern Tibetan Plateau during 1961e2012; but the intensity of light precipitation decreased significantly in the Hindu Kush and central India, and the regional average intensity also decreased. Secondly, the amount and frequency of intense precipitation mostly increased significantly on the Tibetan Plateau, but there was a heterogeneous change over the remainder of the HKH, and regional average annual intense precipitation amount and frequency significantly increased over the HKH during 1961e2012. Thirdly, regional average RX1DAY, RX3DAY, and RX5DAYall showed significant upward trends during 1961e2012, and there was a significant increased tendency of consecutive wet-days in most parts of the study region; however, trends of consecutive dry-days were mostly opposite to those of consecutive wet-days, with regional averaged consecutive dry-days showing no noticeable trend.

著录项

  • 来源
    《气候变化研究进展:英文版》 |2017年第003期|P.166-175|共10页
  • 作者单位

    [1]National Meteorological Information Center, China Meteorological Administration, Beijing 100081, China;

    [2]Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China;

    [3]Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing 100081, China;

    [4]University of Chinese Academy of Sciences, Beijing 100049, China;

    [2]Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China;

    [5]Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081, China;

    [6]International Centre for Integrated Mountain Development, Kathmandu 3226, Nepal;

    [7]Department of Meteorology, Tri-Chandra Campus, Tribhuvan University, Kathmandu 3226, Nepal;

    [5]Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081, China;

    [8]Indian Institute of Tropical Meteorology, Pune 411008, India;

    [1]National Meteorological Information Center, China Meteorological Administration, Beijing 100081, China;

    [2]Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China;

    [5]Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081, China;

    [9]College of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing 210044, China;

    [9]College of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing 210044, China;

    [1]National Meteorological Information Center, China Meteorological Administration, Beijing 100081, China;

  • 原文格式 PDF
  • 正文语种 CHI
  • 中图分类 天文学、地球科学;
  • 关键词

    Climate; change; Trend; Extreme; precipitation; events; HKH; region; Tibetan; Plateau;

    机译:气候;变化;趋势;极端降水;事件;HKH;地区;西藏;高原;
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