Jasons to MetOps Match-up in Tropical Cyclone

In our institute, one of the active researches is studying tropical cyclone wind speed observed from the satellite altimeter and scatterometer. Wind speed is one of the vital information to describe tropical cyclone intensity and strength. Several studies have shown that both satellites can measure sea surface wind speed in normal atmospheric condition with great accuracy. However, in tropical cyclone where complex ocean-atmospheric interactions existed, the estimated accuracy is reduced. Apart from the principal parameter used to estimate wind speed, we conduct several experiments to investigate the importance of incorporating few simultaneously observed parameters to improve estimated wind speed accuracy. For this, geophysical parameters from Jason-2 and Jason-3 satellite altimeter crossing 349 tropical cyclone globally between the year 2015 to 2018 were extracted and their corresponding match-up wind speed from scatterometer ASCAT (MetOp-A and MetOp-B) were found. These data (as attached below) used to produce papers that currently under reviewing process.本研究所当前的一项重点研究方向，是针对卫星高度计（satellite altimeter）与散射计（scatterometer）观测得到的热带气旋风速展开分析。风速是表征热带气旋强度与等级的核心参数之一。已有多项研究表明，在常规大气条件下，这两类卫星均可高精度地测量海表风速。但在存在复杂海气相互作用的热带气旋环境中，风速反演精度会出现下降。除用于反演风速的核心参数外，本团队开展了多组实验，探究引入少量同步观测参数对提升风速反演精度的作用。为此，我们提取了2015至2018年间，Jason-2与Jason-3卫星高度计在全球范围内穿过349个热带气旋时获取的地球物理参数，并匹配得到了对应时段内散射计ASCAT（搭载于MetOp-A与MetOp-B卫星）的同步观测风速数据。本数据集（见下文附件）已被用于撰写目前处于审稿阶段的学术论文。