基于漂流浮标的南大洋卫星高度计有效波高研究

随着技术的进步和数据处理方法的完善,经过修正的卫星高度计数据已获得普遍认可.但在南大洋缺少波浪现场数据,卫星高度计在极端恶劣气候条件下获得数据的准确度仍受到一定程度的质疑.中国于2020年第36次南极考察中,在南大洋布放了一套感应耦合漂流浮标,可提供可靠的南大洋现场波浪数据.本文利用该漂流浮标2020年1月27日至9月...

Research on satellite altimeter significant wave height in the Southern Ocean with drifting buoy

With the improvement of technology and data processing methods, the calibrated satellite altimeter data has been widely recognized. However, due to the lack of in situ wave data in the Southern Ocean, the accuracy of data obtained by satellite altimeters under extreme weather conditions is still being questioned. During the 36th Antarctic Expedition in 2020, China deployed an inductively coupled drifting buoy which can provide reliable in site wave data in the Southern Ocean. By comparing the significant wave height of drifting buoy for 246 days from January 27 to September 29, 2020 with 7 satellite altimeters data, the influence of space window selection on the comparison between satellite altimeter and buoy data is studied.The time and space window of 30 min and 160 km aredetermined to compare the two kinds of wave height data. The results show that the two kinds of data have high consistency, but there are some differences between them. Finally, it is concluded that satellite altimeter data calibrated by in site wave data in other ocean areas may not be able to accurately measure the significant wave height in Southern Ocean and need to be furthercalibrated.