气象科学2018，Vol.38Issue(1)：130-138,9.DOI:10.3969/2017jms.0027
舟山海雾特征及其对数值模式的初步订正
Characteristics of sea fogs in Zhoushan and its preliminary revision on the numerical model
摘要
Abstract
By using four meteorological stations' data in Zhoushan from 1962 to 2015,the hourly automatic weather observation data and buoy station data from 2014 to 2015,the features of the sea fogs over Zhoushan sea area were statistically analyzed.Results show that the sea fog usually comes with the large scale background condition and a certain hydrographic characteristics.It shows that they come frequently in spring and less in autumn;however,they usually happen in the nighttime and early morning,while the time between midnight and early morning is the most frequently,and the fogs won't lift until 11:00.The sea fogs can be divided into four types on the basis of weather situations,while it has lots of differences for the seasons' changes and diurnal variations.This is the element characteristic of the heavy fog:the air temperature in the range of 5-27 ℃,the sea surface temperature in the range of 9-27 ℃,the depression of dew point in the range of 0-4 ℃.About 90％ heavy fogs happen when the relative humidity (2 m highly) ≥95％ and air-sea temperature difference in the range of-3.7-3.2 ℃,and the wind direction of the heavy fogs usually land between southeasterly and southerly winds,while the average wind speed in the range of 1-5 gale.By using the element threshold to show the revision of WRF visibility mode,it can obviously improve the accuracy of the qualitative forecasting for the heavy sea fogs.关键词
大尺度背景条件/气象水文条件/日变化/阈值/准确率Key words
Large scale background condition/Hydrographic characteristics/Diurnal variations/Threshold/Accuracy分类
天文与地球科学引用本文复制引用
陈梅汀,王连喜,徐哲永,陈淑琴,张蔺廉..舟山海雾特征及其对数值模式的初步订正[J].气象科学,2018,38(1):130-138,9.基金项目
舟山海域海雾精细化客观预报方法研究(2013C31058) （2013C31058）
