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Lanzhou University (2015)

The Characteristics of the Dust Storms in the Northern China and Its Ralationships to Natural Factor Over the Period 1960-2007

杨静

Titre : The Characteristics of the Dust Storms in the Northern China and Its Ralationships to Natural Factor Over the Period 1960-2007

Auteur : 杨静

Grade : Master’s Theses 2015

Université : Lanzhou University

Résumé partiel
Dust storms are the most common natural disaster in the deserts of northern China and surrounding areas. These storms have dire effects on the environment and production, social activities and human health. The deserts of China are widespread in arid and semiarid regions, each year, a large quantity of sand and dust is entrained from northwest arid area of China and transported to downwind regions by the westerly winds and winter monsoon. This dust not only can reach the whole North China and even to the region South of 23.5 ° N, but also causes widespread contamination by blowing sand and dust throughout all of North China, the Korean Peninsula, Japan, and northern Pacific Ocean. On occasion, this contamination can even reach North America, Europe and Arctic. Therefore, to reinforce research on dust storm in the arid North China is of great importance for East Asia and global environmental change. This study takes the 10 provinces (autonomous regions) which is populated the deserts as the study area. Based on dust storm records and meteorological data from 118 stations in the study area over the period 1960-2007, the diurnal, monthly and interannual variation of dust storms, as well as their relation to wind speed, precipitation, temperature and NDVI, are analyzed and discussed.

Mots clés : North China ;dust storm ;meteorological factors ;NDVI;

Présentation (CNKI)

Page publiée le 15 avril 2022