| Change characteristics and 5 stations contrastive analysis of climatein eastern Hexi corridor in recent 50 years |
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| DOI：10.7606/j.issn.1000-7601.2011.05.46 |
| Key Words: eastern Hexi corridor climate change characteristic contrastive analysis |
| Author Name | Affiliation | | YANG Xiaoling | Institute of Arid-Meteorology CMA, Key Laboratory of Arid Climate Change and Reducing Disaster, Key Open Laboratory of Arid Climate Change and Disaster Reduction CMA, Lanzhou, Gansu 730020, China
Wuwei Meteorological Bureau, Wuwei, Gansu 733000, China | | DING Wenkui | Wuwei Meteorological Bureau, Wuwei, Gansu 733000, China | | YANG Jinhu | Dingxi Meteorological Bureau, Dingxi, Gansu 743000, China | | ZHOU Wenxia | Wuwei Meteorological Bureau, Wuwei, Gansu 733000, China |
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| Abstract: |
| Using nearly 50a temperature and precipitation data of five stations in Wuwei of eastern Hexi corridor, the characteristics of temporal and spatial change of temperature and precipitation in the area were analyzed, and contrastive analysis was also conducted with statistics method. The results showed: The temperature of north plain area was far higher than that of south mountainous area,
and the temperature reduced gradually along with rise of altitude. The precipitation of north plain area was far less than that of south mountainous area, and the precipitation increased gradually along with the rise of altitude. The regional annual mean temperature assumed a trend of escalation, and the temperature had elevated obviously since the 1990s. Viewed from the change of the average temperature, the highest temperature and the lowest temperature, the elevation scopes of various seasons' temperature were winter > spring > autumn > summer, the winter warming was far greater than other three seasons. The elevation scopes of the average lowest temperature was bigger than that of the average highest tempe
rature, which explained that the night warming was bigger than the daytime warming. The high temperature weather mainly appeared from June to September, while t
he low temperature weather mainly appeared from November to March of next year. Yearly precipitation of every region (except Gulang) assumed increasing tendency
. The increasing scopes of the various seasons' precipitation were summer > autumn > spring > winter, precipitation's increase of summer was the biggest to year precipitation's contribution. Precipitation was mainly light rain. Precipitation days reduced rapidly along with the precipitation magnitude's enhancement. The strong precipitation only appeared from May to September. |
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