World Ocean Atlas 2013 and 2018 Deltas
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The World Ocean Atlas (WOA) is a collection of objectively analyzed, quality controlled temperature, salinity, oxygen, phosphate, silicate, and nitrate means based on profile data from the World Ocean Database (WOD). It can be used to create boundary and/or initial conditions for a variety of ocean models, verify numerical simulations of the ocean, and corroborate satellite data. This layer uses annual means for all averaged decades years. Each value represents the "objectively analyzed climatologies" - the objectively interpolated mean fields for oceanographic variables at standard depth levels for the World Ocean. There are 8 different variables available through the World Ocean Atlas. Temperature (°C) Sallinity (unitless) Oxygen Dissolved Oxygen (µmol/kg) Apparent Oxygen Utilization (µmol/kg) Percent Oxygen Saturation (%) Nitrate (µmol/kg) Phosphate (µmol/kg) Silicate (µmol/kg) There are 102 different depths that range between 0-5,500m that can be accessed using the depth/range slider or queries/filters. World Ocean Atlas 2018 Source Data: https://www.ncei.noaa.gov/access/world-ocean-atlas-2018/ World Ocean Atlas 2018 Product Documentation: https://www.ncei.noaa.gov/sites/default/files/2020-04/woa18documentation.pdf World Ocean Atlas 2013 Source Data: https://www.nodc.noaa.gov/OC5/woa13/ World Ocean Atlas 2013 Product Documentation: https://data.nodc.noaa.gov/woa/WOA13/DOC/woa13documentation.pdf
世界海洋图集（World Ocean Atlas，WOA）是一套基于世界海洋数据库（World Ocean Database，WOD）剖面数据构建的、经过客观分析与质量控制的海洋要素均值场数据集，涵盖温度、盐度、溶解氧、磷酸盐、硅酸盐与硝酸盐等要素。该数据集可用于为各类海洋模式构建边界条件及/或初始条件，验证海洋数值模拟结果，亦可用于佐证卫星观测数据。本图层采用所有统计年代的年均值。每个数值均代表“客观分析气候态”——即针对全球海洋标准深度层的海洋学变量进行客观插值后的均值场。世界海洋图集共提供8类海洋要素变量，具体包括：温度（单位：摄氏度，°C）、盐度（无量纲）、溶解氧（单位：微摩尔每千克，µmol/kg）、表观耗氧量（单位：微摩尔每千克，µmol/kg）、氧饱和度百分比（单位：%）、硝酸盐（单位：微摩尔每千克，µmol/kg）、磷酸盐（单位：微摩尔每千克，µmol/kg）以及硅酸盐（单位：微摩尔每千克，µmol/kg）。数据集涵盖0至5500米范围内的102个标准深度层，可通过深度滑块或查询/筛选工具进行访问。2018版世界海洋图集源数据：https://www.ncei.noaa.gov/access/world-ocean-atlas-2018/；2018版世界海洋图集产品文档：https://www.ncei.noaa.gov/sites/default/files/2020-04/woa18documentation.pdf；2013版世界海洋图集源数据：https://www.nodc.noaa.gov/OC5/woa13/；2013版世界海洋图集产品文档：https://data.nodc.noaa.gov/woa/WOA13/DOC/woa13documentation.pdf
