ECCO Global Mean Atmospheric Pressure - Snapshot (Version 4 Release 4b)

This dataset provides instantaneous hourly global mean atmospheric pressure from the ECCO Version 4 Release 4b (V4r4b) ocean and sea-ice state estimate. V4r4b is an errata for ECCO Version 4, Release 4 (V4r4). 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 V4r4b 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 V4r4b include sea surface height and model sea level anomaly (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]. V4r4b covers the period 1992-01-01T12:00:00 to 2018-01-01T00:00:00.

本数据集提供了来自 ECCO 版本 4 发布 4b（V4r4b）海洋和海冰状态估计的即时每小时全球平均大气压力。V4r4b 是 ECCO 版本 4 发布 4（V4r4）的勘误版。估计海洋环流与气候（ECCO）的海洋和海冰状态估计是三维海洋、海冰和表面大气状态的动态与动力学一致重建。ECCO V4r4b 是对观测数据进行最小二乘法拟合的 MIT 一度全球配置通用环流模型（MITgcm）的自由运行解。V4r4b 使用的观测数据约束包括来自卫星测高仪的海面高度和模型海平面异常（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]，以及使用电导率-温度-深度（CTD）传感器和可消耗的深温计（XBTs）从多个项目[例如，WOCE、GO-SHIP、Argo 等]和平台[例如，研究船只、滑翔机、锚泊、冰链式探测器以及装备了仪器的海豹]现场测量的海洋温度和盐度。V4r4b 覆盖了 1992-01-01T12:00:00 至 2018-01-01T00:00:00 的时间段。