Abstract:Based on the observational data from meteorological stations in Northwest and Beijing’s sandstorm information, the climate influence index D was modified according to the climate conditions in Northwest China, and the relationship of climate influence index D in Northwest and sandstorm occurrences in Beijing was analysed. The results showed that: From 2001 to 2010, the sandstorm occurrences days in Beijing was over 30days in 2001, 2002 and 2006, which was effected by the sandstorm process in China, and the sandstorm occurrences days was 39 in 2001. The annual average of high values of index D in Northwest were located in Basin and Desert region, and during the spring period, the average of D value was the highest in the four season, the value was 2.0, followed by the winter, the value was 0.9, the summer D value was 0.8 and the autumn was 0.59. The correlation analysis of index D and the sandstorm occurrence shows that, the average correlation coefficient in Ningxia was 0.84, Gansu was 0.82, Shanxi was 0.81, Qinghai was 0.78, Xinjiang was 0.74, Inner-Mongolia was 0.72. The sandstorm from northwest pathway and north pathway were greater impact on Beijing’s sandstorm occurrence, the correlation shows a significant positive relationship between the index D of the border zone of Maowusu Desert, the Loess Plateau and Hunshandake Sandland with Beijing’s sandstorm, the correlation coefficient was 0.9, the climate of these areas had a significant effect on the occurrence of sandstorm in Beijing.
陈跃浩, 景元书, 高庆先. 西北地区气候因素与北京市沙尘天气的关系研究[J]. 中国环境科学, 2015, 35(3): 683-693.
CHEN Yue-Hao, JING Yuan-Shu, GAO Qing-Xian. Relationship between climate factors in Northwest China and the sandstorm in Beijing. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(3): 683-693.