SMAP and CalCOFI Observe Freshening during the 2014-2016 Northeast Pacific Warm Anomaly
SMAP and CalCOFI Observe Freshening during the 2014-2016 Northeast Pacific Warm Anomaly
复制标题
SMAP 和 CalCOFI 观测 2014-2016 年东北太平洋温暖异常期间的新鲜现象
作者：
J. Vazquez;J. Gómez
来自美国宇航局土壤湿度主动式被动任务（SMAP）和加州合作海洋渔业调查（CalCOFI）的数据被用来检查2015-2016年南加州洋流系统中发生的新鲜现象。总体而言，此次增温与2014-2016年东北太平洋暖异常有关。主要目标是确定利用SMAP数据观测与变暖及其沿海影响相关的地表盐度信号的可行性。作为第一步，直接比较了一米深度的CalCOFI数据的盐度。2015年，SMAP的盐度比CalCOFI高0.5个实用盐度单位（PSU），但在2016年，偏差减少到<0.1个PSU。在33°N以南，靠近上升流占主导地位的海岸，SMAP在2015年更新了近0.2 PSU。CalCOFI显示0.1 PSU的新鲜度。在北纬33°以北，SMAP和CalCOFI在2016年出现了显著的降温，SMAP下降了0.4 PSU， CalCOFI下降了0.2 PSU。SMAP和CalCOFI的差异与2015年分层增加和混合层深度变化一致。SMAP观测到了下加利福尼亚海岸的空气清新。
Data from NASA’s Soil Moisture Active Passive Mission (SMAP) and from the California Cooperative Oceanic Fisheries Investigations (CalCOFI) were used to examine the freshening that occurred during 2015–2016 in the Southern California Current System. Overall, the freshening was found to be related to the 2014–2016 Northeast Pacific Warm Anomaly. The primary goal was to determine the feasibility of using SMAP data to observe the surface salinity signal associated with the warming and its coastal impact. As a first step, direct comparisons were done with salinity from the CalCOFI data at one-meter depth. During 2015, SMAP was saltier than CalCOFI by 0.5 Practical Salinity Units (PSU), but biases were reduced to <0.1 PSU during 2016. South of 33°N, and nearer to the coast where upwelling dominates, SMAP was fresher in 2015 by almost 0.2 PSU. CalCOFI showed freshening of 0.1 PSU. North of 33°N, SMAP and CalCOFI saw significant freshening in 2016, SMAP by 0.4 PSU and CalCOFI by 0.2 PSU. Differences between SMAP and CalCOFI are consistent with the increased stratification in 2015 and changes in the mixed layer depth. SMAP observed freshening that reached the Baja California Coast.
通过现场测量验证 SMAP SSS
影响因子：
13.5
作者：
Tang W
通讯作者：
Tang W