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气象:2016,42(6):770-776
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2016年3月大气环流和天气分析
(国家气象中心,北京 100081)
Analysis of the March 2016 Atmospheric Circulation and Weather
(National Meteorological Centre, Beijing 100081)
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投稿时间:2016-05-04    修订日期:2016-05-09
中文摘要: 2016年3月大气环流主要特征是:极涡呈偶极型,主极涡偏向西半球,巴尔喀什湖至我国东部为弱脊控制,欧亚大陆环流经向度总体偏小。副热带高压脊线较常年偏南,向西延伸至印度洋与非洲大陆副热带高压打通成带状,南支槽较常年偏弱,但高原槽较为活跃。3月,全国平均降水量为29.3 mm,接近常年同期(29.5 mm)。全国平均气温为6.1℃,较常年同期(4.1)偏高2.0℃,为历史同期第三高值。月内,我国出现1次较强的冷空气过程和2次较强的降水过程,广东3月21日宣布开汛,提前16 d进入华南前汛期。我国中东部出现2次雾 霾天气过程,北方出现3次沙尘天气过程,晋豫陕部分地区遭受气象干旱。西南、江南中南部、华南中东部多地出现雷暴大风、冰雹、短时强降水等强对流天气。
Abstract:The atmospheric general circulation of March 2016 is characterized by the following:The polar vortex was in a dipole pattern with its main body located over the Western Hemisphere. A weak ridge spanned from Lake Balkhash to East China, and the degree of meridionality was lower than normal. The ridge of the Western Pacific Subtropical High was located more southward than normal, and there was a subtropical high belt spaning from Western Pacific all the way to African continent. The Bay of Bengal trough was weaker than normal while the Tibetan plateau trough was stronger. The monthly mean precipitation over China was 29.3 mm, close to its normal value (29.5 mm). The monthly mean temperature was 6.1℃, 2 ℃ higher than normal, ranked the third in record. One cold air process and two rainfall processes occurred in March. Guangdong Province declared the beginning of flood season on 21 March, 16 days earlier than normal. Two fog haze processes occurred in the central and eastern part of China, and three sand dust processes in northern China. Drought emerged in the provinces of Shanxi, Shaanxi and Henan. Thunderstorm, gust, hail and short time severe precipitation hit the vast areas of the southwest, the central and southern part of the south to Yangtze River, and the central and eastern part of South China.
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引用文本:
胡宁,孙军,2016.2016年3月大气环流和天气分析[J].气象,42(6):770-776.
HU Ning,SUN Jun,2016.Analysis of the March 2016 Atmospheric Circulation and Weather[J].Meteor Mon,42(6):770-776.