摘要
利用QN风场,统计分析了西北太平洋海表风场的分布特征.研究发现：（1）春季大风区分布于阿留申群岛附近,在8 m/s以上,第一岛链以内在6 m/s以内;夏季大值区为南海大风区,在7 m/s以上;秋季,日本海和黄渤海多西北风,约7 m/s,台湾海峡可达9 m/s以上;冬季,风速多在8～10m/s.（2）从年平均风速来看,大值区分布于阿留申群岛附近,在8 m/s以上;次大值区为台湾海峡和吕宋海峡,基本在8.5 m/s以上,台湾海峡甚至可达9m/s以上;其次,南海大风区也在7.5 m/s以上.（3）大风频率的分布与年平均风速的分布特征大体一致,中国近海的风速大值区主要分布于台湾海峡、吕宋海峡、琉球群岛附近、南海大风区.
The distribution characteristics of sea surface wind field in the north Pacific are analyzed by using the QN mixed wind data. The results show that the area of heavy wind in spring is located around Aleutian waters with wind speed above 8 m/s. The wind speed is less than 6 m/s within the first island chain. And the summer large value area is in the southeast water of the Indochina Peninsula with wind speed above 7 m/s. In spring,the wind speed in the Japan Sea,Yellow Sea and Bohai Sea is about 7 m/s,and the Taiwan Strait is up to 9 m/s or more. It is about 8-10 m/s in winter. Viewed from annual average wind speed, the large value area distributes in the vicinity of the Aleutian Islands with more than 8 m/s wind speed, bellowed the Taiwan Strait and the Luzon Strait with the wind speed above 8.5 m/s. The Taiwan Strait can even up to 9 m/s or more,then the southeast water of the Indochina Peninsula is also more than 7.5 m/s. Distribution Characteristics of the gale frequency is similar to that of annual average wind speed. Large value area of the Chinese offshore is mainly distributed in the Taiwan Strait, the Luzon Strait, the Ryukyu Islands neighborhoods and the strong wind area of the South China Sea.
出处
《气象水文海洋仪器》
2013年第4期125-128,共4页
Meteorological,Hydrological and Marine Instruments
基金
中国科学院知识创新工程重要方向项目(KZCX2-YW-Q11-03)
关键词
QN风场
西北太平洋
季节特征
年平均风速
大风频率
QN wind data
northwest Pacific
seasonal characteristics
annual wind speed
galefrequency
