中国地理科学 ›› 2020, Vol. 30 ›› Issue (1): 180-188.doi: 10.1007/s11769-019-1091-6

• 论文 • 上一篇    

Stable Isotope Signatures and Moisture Transport of a Typical Heavy Pre-cipitation Case in the Southern Tianshan Mountains

WANG Liwei1, ZHANG Mingjun1, WANG Shengjie1,2,3, Athanassios A. ARGIRIOU4, WANG Gaofei5, Vasileios SALAMALIKIS4, SHI Mengyu1, JIAO Rong1   

  1. 1. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;
    2. Institute of Desert Meteorology, China Meteorological Administration, Ürümqi 830002, China;
    3. State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    4. Laboratory of Atmospheric Physics, Physics Department, University of Patras, Patras GR-26500, Greece;
    5. Meteorological Bureau of Jeminay County, Xinjiang Altay 836500, China
  • 收稿日期:2019-03-06 修回日期:2019-06-28 出版日期:2020-01-20 发布日期:2019-11-08
  • 通讯作者: WANG Shengjie.E-mail:geowang@126.com E-mail:geowang@126.com
  • 基金资助:
    Under the auspices of National Natural Science Foundation of China (No. 41701028, 41971034, 41161012), Scientific Research Program of Higher Education Institutions of Gansu Province (No. 2018C-02)

Stable Isotope Signatures and Moisture Transport of a Typical Heavy Pre-cipitation Case in the Southern Tianshan Mountains

WANG Liwei1, ZHANG Mingjun1, WANG Shengjie1,2,3, Athanassios A. ARGIRIOU4, WANG Gaofei5, Vasileios SALAMALIKIS4, SHI Mengyu1, JIAO Rong1   

  1. 1. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;
    2. Institute of Desert Meteorology, China Meteorological Administration, Ürümqi 830002, China;
    3. State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    4. Laboratory of Atmospheric Physics, Physics Department, University of Patras, Patras GR-26500, Greece;
    5. Meteorological Bureau of Jeminay County, Xinjiang Altay 836500, China
  • Received:2019-03-06 Revised:2019-06-28 Online:2020-01-20 Published:2019-11-08
  • Contact: WANG Shengjie.E-mail:geowang@126.com E-mail:geowang@126.com
  • Supported by:
    Under the auspices of National Natural Science Foundation of China (No. 41701028, 41971034, 41161012), Scientific Research Program of Higher Education Institutions of Gansu Province (No. 2018C-02)

摘要: Stable oxygen isotopes in precipitation contain meaningful environmental information on a synoptic scale and can be applied to diagnose hydrometeorological processes. A series of rainstorms occurred at the southern Tianshan Mountains during the period from May to June 2013, and the event-based precipitation was sampled along the mountain range from west to east. Based on δ18O values in precipitation samples as well as the corresponding meteorological parameters, the moisture transport paths during the sampling period were identified. In late-May (stage 1), isotopes in precipitation collected generally showed a depleting trend. In mid-June (stage 2), there was no coherent trend of isotopes in precipitation for these stations, and only isotope values in Aksu showed a continually depleting trend. Checking other meteorological proxies during the sampling period, the event-based precipitation isotopes sensitively reflected the moisture process. In central Asia, both the westerly and monsoon moisture can be delivered to cause extreme precipitation events, and the isotopic information provides an alternative tool to investigate the atmospheric processes.

关键词: precipitation, stable isotope, moisture source, Tianshan Mountains

Abstract: Stable oxygen isotopes in precipitation contain meaningful environmental information on a synoptic scale and can be applied to diagnose hydrometeorological processes. A series of rainstorms occurred at the southern Tianshan Mountains during the period from May to June 2013, and the event-based precipitation was sampled along the mountain range from west to east. Based on δ18O values in precipitation samples as well as the corresponding meteorological parameters, the moisture transport paths during the sampling period were identified. In late-May (stage 1), isotopes in precipitation collected generally showed a depleting trend. In mid-June (stage 2), there was no coherent trend of isotopes in precipitation for these stations, and only isotope values in Aksu showed a continually depleting trend. Checking other meteorological proxies during the sampling period, the event-based precipitation isotopes sensitively reflected the moisture process. In central Asia, both the westerly and monsoon moisture can be delivered to cause extreme precipitation events, and the isotopic information provides an alternative tool to investigate the atmospheric processes.

Key words: precipitation, stable isotope, moisture source, Tianshan Mountains