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Trend and Characteristics of Climatic Change in Arid Region of Northwest China in Resent 50 Years(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2007年第01期
Page:
99-102
Research Field:
Publishing date:

Info

Title:
Trend and Characteristics of Climatic Change in Arid Region of Northwest China in Resent 50 Years
Author(s):
REN Zhao-xia1; YANG Da-y uan2
1. School of Earth Sciences and Resources Management, Chang’ an University, Xi’an 710054, Shaanxi, China; 2. Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, Jiangsu, China
Keywords:
arid region of Northwest China;  climate change;  air temperature;  precipitation;  trend
PACS:
P461
DOI:
-
Abstract:
The global warming becomes evident from the last years of the twentieth century, the climate of North- west China is affected by it. Based on the month data of the temperature and precipitation from 1951 to 2000, this paper analyzes the climatic change in the arid region of Northwest China using trend coefficient method to find out the trends of change subareas. The results indicate that the temperature appears to be ascending(0.22℃ /10 a)in recent 50 years, especially in the Chaidam basin and north Xinjiang, the jump point happened in 1986. Seasonal temperatures tend to be increasing trend, mainly in autumn and winter. Precipitation appears to be ascending (3.2 mm/10 a), obviously increasing in summer precipitation. Precipitation shows increasing trend each subarea, especially in the north Xinjiang. Trend of climate change is that amplitude of temperature warming in southern and northern arid area of Northwest China is bigger than that in the middle parts, trend of precipitation increasing is from southeast to northwest.

References:

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Last Update: 1900-01-01