海南岛冬季雾日特征及其成因

胡德强; 易灵伟

doi:10.3969/j.issn.2095-1973.2021.02.034

海南岛冬季雾日特征及其成因

胡德强^1,2,
易灵伟^1,2

1. 海南省气候中心, 海口 570203;
2. 海南省南海气象防灾减灾重点实验室, 海口 570203

基金项目:

国家自然科学基金项目(41765005)

海南省自然科学基金项目(417297)

海南省气象局技术提升项目(HNQXJS201804)

详细信息

作者简介:
胡德强(1983-),Email:54569017@qq.com

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Characteristics and Causes of Foggy Days in Winter over Hainan Island

Hu Deqiang^1,2,
Yi Lingwei^1,2

1. Hainan Climate Center, Haikou 570203;
2. Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203

摘要

摘要: 利用海南岛18个国家气象观测站1966—2018年逐日数据及NCEP/NCAR风场再分析资料，对雾日偏多偏少年进行环流场合成分析，并对2018年2月海南岛大雾事件进行个例分析。结果表明：海南岛雾日最多的年份为1968年，全岛雾日平均约21 d；最少为2011年，全岛雾日平均约5 d；海南岛冬季雾日偏多年，对应海南岛上层、中层、低层大气的异常偏西气流；海南岛冬季雾日偏少年，对应海南岛上层、中层、低层大气的异常偏东气流；2018年2月海南岛大雾事件中，影响较为严重的时段对应海南岛上层、中层、低层大气的西风气流，这与气候成因是相符的。
- 海南岛 /
- 冬季雾日 /
- 特征 /
- 成因
Abstract: Based on the daily data of 18 national meteorological observatories in Hainan Island from 1981 to 2018 and NCEP/NCAR wind reanalysis data, the circulation field of more or less foggy days were synthesized and analyzed, and the fog event in Hainan Island in February 2018 was analyzed. The results show that the more days event is 1968, and the foggy days are about 21 days in Hainan Island; the least is 2011, and the foggy days are about 5 days in Hainan Island; the more foggy days in winter correspond to the abnormal upper-level westward flow, middle and lower atmosphere of Hainan Island; the fewer foggy days in winter correspond to the abnormal eastward upper-level flow, middle and lower atmosphere of Hainan Island. The abnormal westward flow in the upper, middle, and lower atmosphere correspond to the severe fog event in Hainan Island in February 2018, which is consistent with the climatic causes.
- Hainan Island /
- foggy day in winter /
- characteristic /
- cause