NSSC OpenIR  > 微波遥感部
Evaluation of coastal sea level offshore Hong Kong from Jason-2 altimetry
Xu, Xi-Yu; Birol, Florence; Cazenave, Anny; Xu, Xi-Yu (xuxiyu@mirslab.cn)
作者部门微波遥感部
发表期刊Remote Sensing
2018
卷号10期号:2
语种英语
摘要As altimeter satellites approach coastal areas, the number of valid sea surface height measurements decrease dramatically because of land contamination. In recent years, different methodologies have been developed to recover data within 10-20 km from the coast. These include computation of geophysical corrections adapted to the coastal zone and retracking of raw radar echoes. In this paper, we combine for the first time coastal geophysical corrections and retracking along a Jason-2 satellite pass that crosses the coast near the Hong-Kong tide gauge. Six years and a half of data are analyzed, from July 2008 to December 2014 (orbital cycles 1-238). Different retrackers are considered, including the ALES retracker and the different retrackers of the PISTACH products. For each retracker, we evaluate the quality of the recovered sea surface height by comparing with data from the Hong Kong tide gauge (located 10 km away). We analyze the impact of the different geophysical corrections available on the result. We also compute sea surface height bias and noise over both open ocean ( > 10 km away from coast) and coastal zone (within 10 km or 5 km coast-ward). The study shows that, in the Hong Kong area, after outlier removal, the ALES retracker performs better in the coastal zone than the other retrackers, both in terms of noise level and trend uncertainty. It also shows that the choice of the ocean tide solution has a great impact on the results, while the wet troposphere correction has little influence. By comparing short-term trends computed over the 2008.5-2014 time span, both in the coastal zone and in the open ocean (using the Climate Change Initiative sea level data as a reference), we find that the coastal sea level trend is about twice the one observed further offshore. It suggests that in the Hong Kong region, the short-term sea level trend significantly increases when approaching the coast. © 2018 by the authors.
收录类别SCI ; EI
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6197
专题微波遥感部
通讯作者Xu, Xi-Yu (xuxiyu@mirslab.cn)
推荐引用方式
GB/T 7714
Xu, Xi-Yu,Birol, Florence,Cazenave, Anny,et al. Evaluation of coastal sea level offshore Hong Kong from Jason-2 altimetry[J]. Remote Sensing,2018,10(2).
APA Xu, Xi-Yu,Birol, Florence,Cazenave, Anny,&Xu, Xi-Yu .(2018).Evaluation of coastal sea level offshore Hong Kong from Jason-2 altimetry.Remote Sensing,10(2).
MLA Xu, Xi-Yu,et al."Evaluation of coastal sea level offshore Hong Kong from Jason-2 altimetry".Remote Sensing 10.2(2018).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
201810-00282.pdf(1985KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xu, Xi-Yu]的文章
[Birol, Florence]的文章
[Cazenave, Anny]的文章
百度学术
百度学术中相似的文章
[Xu, Xi-Yu]的文章
[Birol, Florence]的文章
[Cazenave, Anny]的文章
必应学术
必应学术中相似的文章
[Xu, Xi-Yu]的文章
[Birol, Florence]的文章
[Cazenave, Anny]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。