| The dry-wet climate variation in warm season and R/S analysis of sensible heat in Altay Area of Northwest China |
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| DOI：10.7606/j.issn.1000-7601.2010.05.48 |
| Key Words: Altay ground surface moisture index climatic change R/S analysis |
| Author Name | Affiliation | | ZHUANG Xiaocui | Lanzhou Institute of Arid Meteorology, China Meteorological Administration
Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Lanzhou, Gansu 730020
Altay Meteorological Bureau, Altay, Xinjiang 836500, China | | ZHAO Zhengbo | Altay Meteorological Bureau, Altay, Xinjiang 836500, China | | YANG Sen | Altay Meteorological Bureau, Altay, Xinjiang 836500, China | | ZHANG Linmei | Lanzhou Institute of Arid Meteorology, China Meteorological Administration
Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Lanzhou, Gansu 730020
Altay Meteorological Bureau, Altay, Xinjiang 836500, China |
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| Abstract: |
| Surface moisture index was determined by the potential evaporation calculated by Thomthwaite method, which is based on the 1961～2008 temperature, precipitation data from seven weather stations in Altay region of Xinjiang from April to October. The surface humid index changes of Altay region were studied by using Mann-Kendall trend test method. The results showed that the majority of the region warmed up in warm seasons and precipitation increased. As for surface moisture index, only Altay, where warming was not significant, and Burqin, where warming was still less significant, were on a significantly increasing trend, while the eastern part where warming was the most significant showed no significant change. The result indicates that the temperature changes have important influences on the wet and dry changing. Changes of wet and dry in the area are not significant in spring and autumn, but on a wetting trend in summer. From the point of view of regional distribution, the summer of Altay, Burqin and Fuhai stations sees a significant trend of wetting, Fuhai station is on a significant drying trend in autumn, and the other stations do not change significantly. R/S analysis showed that increasing (or decreasing) trend of surface humid index, temperature and precipitation in last 48 years will turn into a decreasing (or increasing) trend in the future. |
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