Jason-2有效波高产品在中国海域的准确性评估  

VALIDATION ON JASON-2 SIGNIFICANT WAVE HEIGHT PRODUCT FOR CHINA SEAS

作　　者：王娟娟[1] 高志一[1] 王久珂[1] 李本霞[1] 宋金宝[2] 

机构地区：[1]国家海洋环境预报中心,北京100081 [2]浙江大学海洋学院,杭州310058

出　　处：《海洋与湖沼》2016年第3期509-517,共9页Oceanologia Et Limnologia Sinica

基　　金：中国科学院海洋环流与波动重点实验室开放基金项目;KLOCAW1409号;国家科技支撑计划项目;2013BAB04B003号

摘　　要：Jason-2卫星高度计的有效波高(Hs)产品在海洋学领域得到了广泛应用。为了综合评估Jason-2有效波高产品在中国多个海域和不同海况下的准确性,为其在中国海域的应用研究提供参考,本文基于国家海洋局20个水文气象浮标从2008年至2014年的长期观测数据,对Jason-2有效波高产品在中国三个海区(渤黄海、东海、南海)和不同海况(观测有效波高Hs最大为6.2m)下的准确性进行综合分析,并研究其准确性与离岸距离的关系。结果表明Jason-2有效波高产品:(1)在中国海域具有较好的准确性,均方根误差RMSE=0.445m;(2)在南海的准确性最高,而在渤黄海的准确性较差;(3)在2m≤Hs≤5m的海况条件下准确性较好;(4)在越远离陆地的海域准确性越高。The significant wave height （Hs） product of Jason-2 satellite altimeter has been applied in many fields of oceanography. However, due to lack of long-period and wide-coverage wave observation for China seas, the accuracy of Jason-2 significant wave height product remains in poor validation. To validate Jason-2 significant wave height product under different wave states in China seas, and provide a reference for the application of the product, we employed 20 hydro-meteorological buoy data in 2008-2014 from the State Oceanic Administration （SOA） of China to evaluate the product in three sea areas （Bohai Sea and Yellow Sea, East China Sea, and the South China Sea） at different wave states （the maximum Hs is 6.2m）. Results show that Jason-2 significant wave height product is good for the application for China seas （the root mean square error is only 0.445m, and best applied in the South China Sea）. In addition, it is ideal when 2m ≤ Hs ≤ 5m; and the accuracy becomes higher with distance away from land.

关 键 词：中国海域 Jason-2 浮标 有效波高 

分 类 号：P731[天文地球—海洋科学]