Comparative Study of Land Wind and Sea Wind in Qinhuangdao Based on Large Data Analysis

Abstract

Using the mobile weather station wind data installed on the "Prince" cruise ship on Qinhuangdao from August 2 to 10, 2016, the wind speed(sea wind) on the cruise ship route was obtained using the true wind observation algorithm. A comparative analysis of the meteorological observation station(near-shore wind) in the Haigang District closest to this cruise ship terminal and the Qinhuangdao National Basic Weather Station(land wind) shows that when controlled by the weak pressure field, the sea wind speed of Qinhuangdao is generally greater than the near-shore wind speed and the land wind speed about 1 to 2 wind levels. The use of near-shore wind speed to revise the sea wind speed is slightly better than the use of land wind speed to revise the sea wind speed; The sea winds are generally deflected clockwise from the near-shore winds and the land winds.However, it is unrealistic to use the near-shore wind or land wind direction to accurately adjust the sea wind direction. Keywords— Land wind; near-shore wind; sea wind; true wind algorithm; Qinhuangdao 摘要—利用 2016 年 8 月 2-10 日秦皇岛“王子号”游船上 安装的移动气象站风资料,采用真风观测算法得到游船航线上 的海上风向风速(海上风),与距此游船码头最近的海港区求 仙公园气象观测站(近岸风)、秦皇岛国家基本气象站资料(陆 上风)进行对比分析,结果表明:当受弱气压场控制时,秦皇 岛近海风速一般大于近岸风速和陆上风速约 1~2 个风级,用近 岸风速订正海上风略优于用陆上风速订正海上风速;海上风向 一般较陆上风、近岸风顺时针偏转,但偏转角度差异很大,若 想利用近岸风或陆上风风向精确调整海上风风向不现实。 关键词:陆上风,近岸风,海上风,真风算法,秦皇岛