ZHANG Tiao-feng,ZHAO Quan-ning,LAI Xiao-ling,et al.Analysis on Climate Anomalies and Causation in August 2016 in Qinghai[J].Journal of Chengdu University of Information Technology,2018,(06):713-717.[doi:10.16836/j.cnki.jcuit.2018.06.017]
2016年8月青海省气候异常特征及成因分析
- Title:
- Analysis on Climate Anomalies and Causation in August 2016 in Qinghai
- 文章编号:
- 2096-1618(2018)06-0713-05
- Keywords:
- meteorology; climate change; upper trough; shear; abnormal climate; Qinghai Province
- 分类号:
- P467
- 文献标志码:
- A
- 摘要:
- 针对青海省2016年8月气候异常的研究主要集中于气候异常的评估、对其发生成因分析较少的问题,选取典型时段,结合气候统计方法,分析不同层次高度场配置和水汽来源,深入探讨气候异常成因。研究结果表明:500 hPa高度场上乌拉尔山—贝湖地区高度场异常偏高,大陆高压和南亚高压中心均移至青海上空,造成青海省气温异常偏高; 高空横槽转竖,利于冷空气南下,而青海环湖地区—黄河上游被较为显著的南风气流控制,孟加拉湾、日本海的暖湿气流向青海省输送较显著,使青海省中东部水汽较充沛,形成大范围的降水。
- Abstract:
- As the study of climate anomaly in August in Qinghai Province focuses on assessment of climate anomaly and rarely analyzes the causes of climate anomaly, by selecting a typical time period and combining climate statistics method this article analyzes the configuration of height field at different levels, the source of water vapor and further discusses the causes of climate anomaly. The results show as follows: at 500 hPa height fields, the height field of the Ural Mountain-Beihu Lake region is abnormally high, andthe center of the mainland high and the South Asia High is all moved to Qinghai, which causes an unusually high temperature of the whole province. The transverse trough at the upper level becomes erected, which is conducive to cold air southward. However, the district around Qinghai Lake and the upper reaches of the Yellow River are controlled by the more significant south wind flow. The warm and wet air current from Bay of Bengal and Japan Sea is significantly transmitted to our province, which makes more abundant water vapor in center and east of our province and forms a wide range of precipitation.
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备注/Memo
收稿日期:2018-03-13 基金项目:青海省气象局科技资助项目(201701、201804)