Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Chine → 2021 → Analysis of Climatic Characteristics of Soil Moisture during Warm Periods on Tibetan Plateau

China Meteorological Research Institute (中国气象科学研究院) 2021

Analysis of Climatic Characteristics of Soil Moisture during Warm Periods on Tibetan Plateau

李蓉蓉

Titre : Analysis of Climatic Characteristics of Soil Moisture during Warm Periods on Tibetan Plateau

Auteur : 李蓉蓉

Grade : Master 2021

Université : China Meteorological Research Institute (中国气象科学研究院)

Résumé partiel
This paper uses the observation data of the soil moisture automatic stations of the third Tibetan Plateau Atmospheric Science Experiment(TIPEX-III)during 2015-2016and the hourly precipitation data of the automatic rainfall stations of my country to analyze the characteristics of the temporal and spatial changes of soil moisture and dynamic characteristics of summer soil moisture on the Tibetan Plateau.Combined with daily soil temperature data from surface meteorological stations,evaluate multiple sets of soil moisture products(ERA5,ERA-Interim,MERRA-2,CFSv2 and NOAH2.1)during warm periods(April to October)on the Tibetan Plateau.The main conclusions are as follows :(1)The soil moisture is arid in the western part and humid in the eastern part of the Tibetan Plateau.The average annual soil moisture in the western plateau is in the range of 0.03~0.088)3/8)3,while the average soil moisture in the eastern plateau is in the range of 0.07~0.218)3/8)3.The soil moisture in the eastern plateau is about twice that of the western plateau,and the standard deviation of the soil moisture in the eastern plateau is much larger than that in the western plateau.Affected by climatic factors(precipitation,radiation,etc.)and geographical factors(river,topography,soil quality,etc.),the distribution of soil moisture in the eastern Plateau is more complicated,and individual arid soil moisture sites appear in the humid spatial distribution.The monthly variation characteristics of soil moisture in different areas of the Tibetan Plateau are different,but they are all significantly affected by precipitation.

Mots clés : Tibetan Plateau ;Soil moisture ;Temporal and spatial distribution characteristics ;Dynamic characteristics ;Data evaluation ;

Présentation (CNKI)

Page publiée le 16 mars 2022