首页|Quantifying Contribution of Recycled Moisture to Precipitation in Tem-perate Glacier Region,Southeastern Tibetan Plateau,China
Quantifying Contribution of Recycled Moisture to Precipitation in Tem-perate Glacier Region,Southeastern Tibetan Plateau,China
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Recycled moisture is an important indicator of the renewal capacity of regional water resources.Due to the existence of Yu-long Snow Mountain,Lijiang in Yunnan Province,southeast of the Qinghai-Tibet Plateau,China,is the closest ocean glacier area to the equator in Eurasia.Daily precipitation samples were collected from 2017 to 2018 in Lijiang to quantify the effect of sub-cloud evapora-tion and recycled moisture on precipitation combined with the d-excess model during monsoon and non-monsoon periods.The results indicated that the d-excess values of precipitation fluctuated between-35.6‰ and 16.0‰,with an arithmetic mean of 3.5‰.The local meteoric water line(LMWL)was δD=7.91δ18O+2.50,with a slope slightly lower than the global meteoric water line(GMWL).Sub-cloud evaporation was higher during the non-monsoon season than during the monsoon season.It tended to peak in March and was primarily influenced by the relative humidity.The source of the water vapour affected the proportion of recycled moisture.According to the results of the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)model,the main sources of water vapour in Liji-ang area during the monsoon period were the southwest and southeast monsoons.During the non-monsoon period,water vapour was transported by a southwesterly flow.The recycled moisture in Lijiang area between March and October 2017 was 10.62％.Large vari-ations were observed between the monsoon and non-monsoon seasons,with values of 5.48％and 25.65％,respectively.These differ-ences were primarily attributed to variations in the advection of water vapour.The recycled moisture has played a supplementary role in the precipitation of Lijiang area.
MA Yanwei、PU Tao、SHI Xiaoyi、MA Xinggang、YU Hongmei
展开 >
College of Geography and Environmental Sciences,Zhejiang Normal University,Jinhua 321004,China
National Field Science Observation and Research Station of Yulong Snow Mountain Cryosphere and Sustainable Development,Northwest Institute of Eco-En-vironment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
State Key Laboratory of Cryospheric Sciences,Northwest Institute of Eco-environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China
NETL
NSTL
万方数据
