[1]XU Ronglu,LI Baofu,LIAN Lishu.Quantitative Relationship Between the Spatiotemporal Change of Relative Humidity and Climatic Factors in the Arid Region of Northwest China from 1960 to 2015[J].Research of Soil and Water Conservation,2020,27(06):233-239,246.
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Quantitative Relationship Between the Spatiotemporal Change of Relative Humidity and Climatic Factors in the Arid Region of Northwest China from 1960 to 2015
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
233-239,246
Column:
目次
Public date:
2020-10-20
- Title:
- Quantitative Relationship Between the Spatiotemporal Change of Relative Humidity and Climatic Factors in the Arid Region of Northwest China from 1960 to 2015
- CLC:
- P468
- DOI:
- -
- Abstract:
- To reveal the characteristics of humidity changes in arid regions of China, we used daily meteorological data from 74 weather stations in the arid region of northwest China(ARNC)from 1960 to 2015, and employed trend analysis, Mann-Kendall nonparametric statistical test and sensitivity analysis to analyze the temporal and spatial variation of relative humidity(RH)and its quantitative relationships with temperature and precipitation. The results showed that:(1)the mean annual RH showed a non-significant downward trend at a rate of -0.125%/decade from 1960 to 2015;(2)RH showed a slight increasing trend(0.087%/decade)in autumn, a non-significant decreasing trend in winter and summer, and a large decreasing trend in spring(-0.554%/decade);(3)the average annual RH was largest in northern Xinjiang, second largest in southern Xinjiang, and smallest in the Hexi Corridor; however, RH increased significantly in southern Xinjiang(0.228%/decade, p<0.05), while RH showed a non-significant downward trend in northern Xinjiang and Hexi Corridor;(4)RH and precipitation in different regions of different seasons showed the significant positive correlation(p<0.05), while RH and temperature mainly showed the significant negative correlation(p<0.05). In recent decades, RH in the arid region of northwest China had declined slightly, and there were certain spatial differences. Under the background of regional climate warming and humidification, if the precipitation increases by 10%, RH will increase by 1.22%; if the temperature increases by 10%, RH will reduce by 0.96%.
- References:
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Last Update:
2020-10-20