ECCO Ocean and Sea-Ice Surface Stress - Monthly Mean llc90 Grid (Version 4 Release 4)

This dataset provides monthly-averaged ocean and sea-ice surface stress on the native Lat-Lon-Cap 90 (LLC90) model grid from the ECCO Version 4 Release 4 (V4r4) ocean and sea-ice state estimate. Estimating the Circulation and Climate of the Ocean (ECCO) ocean and sea-ice state estimates are dynamically and kinematically-consistent reconstructions of the three-dimensional time-evolving ocean, sea-ice, and surface atmospheric states. ECCO V4r4 is a free-running solution of the 1-degree global configuration of the MIT general circulation model (MITgcm) that has been fit to observations in a least-squares sense. Observational data constraints used in V4r4 include sea surface height (SSH) from satellite altimeters [ERS-1/2, TOPEX/Poseidon, GFO, ENVISAT, Jason-1,2,3, CryoSat-2, and SARAL/AltiKa]; sea surface temperature (SST) from satellite radiometers [AVHRR], sea surface salinity (SSS) from the Aquarius satellite radiometer/scatterometer, ocean bottom pressure (OBP) from the GRACE satellite gravimeter; sea ice concentration from satellite radiometers [SSM/I and SSMIS], and in-situ ocean temperature and salinity measured with conductivity-temperature-depth (CTD) sensors and expendable bathythermographs (XBTs) from several programs [e.g., WOCE, GO-SHIP, Argo, and others] and platforms [e.g., research vessels, gliders, moorings, ice-tethered profilers, and instrumented pinnipeds]. V4r4 covers the period 1992-01-01T12:00:00 to 2018-01-01T00:00:00.

本数据集提供了基于原生的经纬度-高程-网格90（LLC90）模型网格的月平均海洋和海冰表面应力，数据源自ECCO版本4发布4（V4r4）海洋和海冰状态估计。估算海洋环流与气候（ECCO）的海洋和海冰状态估计是对三维时变海洋、海冰和表面大气状态的动力学与运动学一致性重建。ECCO V4r4是MIT通用环流模型（MITgcm）1度全球配置的自由运行解，该解已在最小二乘意义上拟合观测数据。V4r4中使用的观测数据约束包括来自卫星测高仪的海面高度（SSH）[ERS-1/2、TOPEX/Poseidon、GFO、ENVISAT、Jason-1、2、3、CryoSat-2和SARAL/AltiKa]；来自卫星辐射计的海面温度（SST）[AVHRR]；来自Aquarius卫星辐射计/散射计的海面盐度（SSS）；来自GRACE卫星重力仪的海洋底部压力（OBP）；来自卫星辐射计的海冰浓度[SSM/I和SSMIS]，以及通过电导率-温度-深度（CTD）传感器和可消耗的深温计（XBTs）从多个项目[例如世界海洋环流实验（WOCE）、全球海洋通量研究（GO-SHIP）、Argo及其它]和平台[例如研究船、水下滑翔机、浮标、冰锚式探测器以及装备有仪器的海豹]现场测量的海洋温度和盐度。V4r4覆盖了从1992年01月01日12:00:00至2018年01月01日00:00:00的时间段。