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大连湾南岸海陆风的特征分析

发表时间:2009-12-31  浏览量:1849  下载量:603
全部作者: 崔燕军
作者单位: 中国天辰工程有限公司环境工程部
摘 要: 根据大连市气象站所处的地理位置和海陆风的定义,对两个方向的海风进行了分析,得知NW-N-E方向的海风对大连气象站的影响大于E-S-SW方向的海风。根据大连市气象站1996年至2001年共6年的历史地面观测资料,统计分析了84个海陆风个例,对每一个海陆风个例的初始和最大海风时刻、风向、风速和初始海风到最大海风的时间差、风速差进行了统计和分析,揭示了该地区海陆风环流的统计特征和季节变化规律。表明:1) 海陆风日的出现频率在秋、冬两季较多,而海风强度在春、冬两季较大;2) 初始海风时刻平均在11:00,平均风速为3.47 m/s,经过5~6 h后海风达到最大,平均风速为6.11 m/s;全年初始海风风向以WNW和NW为主,而全年最大海风风向主要为N.
关 键 词: 环境气象学;大连湾;海陆风;海风风向;季节分布;统计分析
Title: Statistic analysis on characteristics of sea-land breeze on South Coast of Dalian Bay
Author: CUI Yanjun
Organization: Department of Environmental Engineering, China Tianchen Engineering Corporation
Abstract: According to the geographical position of Dalian Weather Station and the definition of sea-land breeze, sea breeze was analysed with two directions. It indicated that the influence of sea breeze on Dalian Weather Station was larger in NW-N-E than E-S-SW. By analyzing the data from 1996 to 2001 in Dalian Weather Station, 84 samples of sea-land breeze day were obtained. Some characteristics of sea-land breeze in Dalian were analysed, which included the initial speed and direction of sea breeze, its maximum speed and direction, its initial and maximum time, as well as the time difference and speed difference between initial and maximum sea breeze. The statistic characteristics and seasonal change law of sea-land breeze circulation were revealed, The results indicated: 1) The appearance frequency of sea-land breeze day was higher in Autumn and Winter, and the speed of sea breeze was stronger in Spring and Winter; 2) The initial time of sea breeze was at 11 o’clock and its speed was 3.47 m/s. 5~6 h later, the speed of sea breeze achieved maximum with 6.11 m/s. The yearly initial direction of sea breeze was WNW and NW, while the maximum direction was N.
Key words: environmental meteorology; Dalian Bay; sea-land breeze; sea breeze direction; distribution in seasons; statistic analysis
发表期数: 2009年12月第24期
引用格式: 崔燕军. 大连湾南岸海陆风的特征分析[J]. 中国科技论文在线精品论文,2009,2(24):2647-2654.
 
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