ISLSCP II SEA SURFACE TEMPERATURE

Sea surface temperature (SST) is an important indicator of the state of the earth climate system as well as a key variable in the coupling between the atmosphere and the ocean. Accurate knowledge of SST is essential for climate monitoring, prediction and research. It is also a key surface boundary condition for numerical weather prediction and for other atmospheric simulations using atmospheric general circulation models and regional models. SST also is important in gas exchange between the ocean and atmosphere, including the air-sea flux of carbon. Gridded SST products have been developed to satisfy these needs. There are 3 .zip files provided with this data set. Gridded monthly and weekly sea surface temperature (SST) and long term SST monthly climatology for the period 1971-2000 are provided here. Weekly normalized error variance fields are also provided with the weekly data. The data are derived using the National Oceanic and Atmospheric Administration (NOAA) Optimum Interpolation (OI) global sea surface temperature analyses that use seven days of in situ (ship and buoy) and satellite SST observations and SST values derived from sea ice concentration. These analyses are produced weekly using optimum interpolation (OI) on a 1-degree grid. The data sets included in the ISLSCP II data collection are produced using version 2 of the OI analyses, called OIv2. In this data set, the ISLSCP II staff have masked land areas based on the ISLSCP II land/water mask. A file describing the differences between the ISLSCP II mask and the original mask used is provided.海表温度（Sea Surface Temperature, SST）是地球气候系统状态的重要指示因子，亦是大气与海洋耦合过程中的核心变量。精准掌握海表温度数据，对于气候监测、预测与研究而言至关重要。同时，它亦是数值天气预报，以及利用大气通用环流模式和区域模式开展其他大气模拟工作的关键地表边界条件。海表温度在海洋与大气间的气体交换过程中同样发挥着关键作用，其中包括碳的海-气通量传输。为满足上述需求，相关领域已开发出网格化海表温度产品。本数据集附带3个.zip压缩文件。 本数据集提供1971-2000年期间的网格化逐月、逐周海表温度数据，以及长期逐月海表温度气候态数据。配套周度数据的，还包含周度归一化误差方差场数据。本数据集的数据源自美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）的最优插值（Optimum Interpolation, OI）全球海表温度分析产品，该产品利用7天的原位（船舶与浮标）观测、卫星海表温度观测数据，以及由海冰密集度反演得到的海表温度值生成。该分析产品以1°网格为基础，通过最优插值方法按周生成。纳入ISLSCP II（International Satellite Land Surface Climatology Project II）数据集合集的本次数据，采用被称为OIv2的最优插值分析版本2生成。在本数据集中，ISLSCP II项目团队基于ISLSCP II陆-水掩膜数据对陆地区域进行了掩膜处理。本数据集还附带一份说明文件，详述了ISLSCP II掩膜与原使用掩膜之间的差异。