2000年以来黑龙江省浓雾气候特征及秋季浓雾天气异常环流特征  

Climatic Characteristics of Dense Fogs and Anomalous Circulation Characteristics of Autumn Dense Fog in Heilongjiang Province since 2000

作　　者：赵玲[1] 齐铎[1] 李树岭 张月[1] 

机构地区：[1]黑龙江省气象台,哈尔滨150030 [2]哈尔滨市气象局,哈尔滨150028

出　　处：《气象科技》2017年第1期102-107,共6页Meteorological Science and Technology

基　　金：黑龙江省气象局科研项目(HQ2014005)资助

摘　　要：探讨了黑龙江省2000年以来浓雾时空分布特征以及秋季浓雾异常环流特征和环流分型。结果表明:黑龙江省浓雾春季和冬季少,夏季最多,但多发生在山区,持续时间短,局地性强;范围大、持续时间长、灾害重的浓雾天气主要出现在秋季,其中10—11月持续性浓雾天气过程均发生在2010年以后。黑龙江省秋季浓雾多发生在暖湿空气较强的环境条件下,根据500hPa高度场和距平场特征把秋季偏暖背景下浓雾发生的主要环流型分为西低东高型和纬向型,黑龙江省中低层正高度距平、850hPa距平风场上反气旋环流以及西北太平洋副热带高压常偏北偏强等异常环流特征对浓雾中短期预报有较好的指示意义。The climate characteristics of dense fogs and the anomalous circulation characteristics and atmospheric circulation patterns of autumn dense fogs since 2000 in Heilongjiang Province are discussed. This research shows that dense fog days appear mostly in summer in mountain areas. The dense fog events causing severe disasters with wide range and long duration occur most frequently in autumn. All the persistent dense fog weather events in October and November are after 2010. Most of the dense fog days occur under the warm and the moist background in autumn. Based on the 500 hPa mean height and anomaly fields, the major atmospheric circulation patterns, the lower height in west and the higher height in east and the zonal circulations are put forward. Anomalous circulation characteristics such as the big positive height anomaly at middle and lower levels, anticyclone circulation at 850 hPa, and the strong north-than-normal Northwest Pacific Subtropical High are helpful to improve the quality of fog forecast in the medium and short term in Heilongjiang Province.

关 键 词：浓雾 气候特征 秋季 异常环流特征 偏暖背景 环流分型 

分 类 号：P458[天文地球—大气科学及气象学]