Validating SMAP SSS with in situ measurements
Validating SMAP SSS with in situ measurements
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通过现场测量验证 SMAP SSS
DOI：
10.1016/j.rse.2017.08.021
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发表时间：
2017
影响因子：
13.5
通讯作者：
Tang W
中科院分区：
文献类型：
--
作者：
Tang W
从 SMAP 辐射计测量中检索到的海面盐度 (SSS) 与 Argo 浮标、热带系泊浮标和船基热盐仪 (TSG) 数据中的原位盐度进行了验证。与热带和中纬度地区的 Argo 网格数据相比，SMAP SSS 每月的精度达到 0.2 PSU。在热带海洋中，通过系泊浮标在 1 m 处测量的盐度的时间序列比较表明，SMAP 可以跟踪一个月内发生的较大盐度变化。 SMAP、SMOS 和 Argo 数据的协同分析使我们能够从卫星数据的评估中识别并排除一些实时浮标数据中的错误跳跃或漂移。由此产生的 SMAP-浮标匹配分析给出的平均标准偏差为 0.22 PSU，周尺度的相关系数为 0.73。在月度时间尺度上，平均标准差降低至 0.17 PSU，相关系数提高至 0.8。 SMAP L3 每日地图显示印度夏季季风期间咸水从阿拉伯海侵入孟加拉湾，这与孟加拉湾边界层实验 (BoBBLE) 项目现场活动期间部署的 Argo 浮标收集的每日测量结果一致。在地中海，来自 SMAP 的 SSS 空间格局由船基 TSG 确认。与单个 Argo 浮标的比较表明，SMAP 检索算法在西地中海地区表现更好，但在东地中海地区和亚得里亚海受到射频干扰 (RFI) 和土地污染的影响。
Sea surface salinity (SSS) retrieved from SMAP radiometer measurements are validated against in situ salinity from Argo floats, tropical moored buoys and ship-based thermosalinograph (TSG) data. SMAP SSS achieved an accuracy of 0.2 PSU on a monthly basis in comparison with Argo gridded data in the tropics and mid-latitudes. In the tropical oceans, time series comparison of salinity measured at 1 m by moored buoys indicates that SMAP can track large salinity changes occurred within a month. Synergetic analysis of SMAP, SMOS and Argo data allows us to identify and exclude erroneous jumps or drift in some real-time buoy data from the assessment of the satellite data. The resulting SMAP-buoy matchup analysis gives an average standard deviation of 0.22 PSU and correlation coefficient of 0.73 on weekly scale. On monthly time scales, the average standard deviation reduced to 0.17 PSU and the correlation coefficient improved to 0.8. SMAP L3 daily maps reveals salty water intrusions from the Arabian Sea into the Bay of Bengal during the Indian summer monsoon, consistent with the daily measurements collected from Argo floats deployed during the Bay of Bengal Boundary Layer Experiment (BoBBLE) project field campaign. In the Mediterranean Sea, the spatial pattern of SSS from SMAP is confirmed by the ship-based TSG. Comparison with individual Argo floats suggests the SMAP retrieval algorithm performs better in the Western Mediterranean region, but suffers from radio-frequency interference (RFI) and land contamination in the Eastern Mediterranean region and Adriatic Sea.
海面盐度的小尺度变化及其对卫星测量的影响
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
N. Vinogradova;R. Ponte
通讯作者：
R. Ponte
海盗计划
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
B. Bourlès;R. Lumpkin;Michael;J.;mcPhaden;F. Hernandez;P. Nobre;E. Campos;YU Lisan;S. Planton;A. Busalacchi;Antonio;D.;Moura;J. Servain
通讯作者：
J. Servain