Seafloor Salinity (pss)

Retirement Notice: This item is in mature support as of December 2025 and will be retired in December 2027. A new version of this item is available for your use. Esri recommends updating your maps and apps to use the new version. Salinity is the quantity of dissolved salt in water. Marine life have a limited range of salinity that they can live in. Open ocean seawater typically has a salinity of 32 to 37. Temperature and salinity characteristics help determine origin of water masses. Phenomenon Mapped: Seafloor Salinity Units: g/kg - practical salinity scale Cell Size: 30 arc seconds, approximately 1 km Source Type: Discrete Pixel Type: Unsigned integer Spatial Reference: GCS_WGS_1984 Mosaic Projection: Web Mercator Auxiliary Sphere Extent: Global oceans Source: Marine Conservation Institute (MCI) Citation: Boyer TP, Levitus S, Garcia HE, Locamini RA, Stephens C, et al. (2005) Objective analyses of annual, seasonal, and monthly temperature and salinity for the World Ocean on a 0.25° grid. International Journal of Climatology 25: 931–945. Publication Date: 2005 ArcGIS Server URL: https://oceans2.arcgis.com/arcgis/ The Marine Conservation Institute used this dataset as an input to a predictive habitat model documented in the publication Global Habitat Suitability for Framework-Forming Cold-Water Corals. What can you do with this layer? Visualization: This layer can be used for visualization online in web maps and in ArcGIS Desktop. Analysis: This layer can be used as an input to geoprocessing tools and model builder. Raster Functions: Cartographic Renderer - see this blog for more information.停用通知：本数据集自2025年12月起进入成熟支持阶段，并将于2027年12月正式停用。当前已有可用的新版本数据集。Esri建议您更新地图与应用，以使用新版本。 盐度（Salinity）指水中溶解盐的总含量。海洋生物的生存盐度范围有限。开阔大洋海水的盐度通常介于32至37之间。温度与盐度特征是判断水团来源的重要依据。 制图对象：海底盐度（Seafloor Salinity） 单位：克/千克（g/kg）—— 实用盐度标度（Practical Salinity Scale） 像元分辨率：30角秒，约合1千米 源类型：离散型 像元类型：无符号整数 空间参考：GCS_WGS_1984 镶嵌投影：Web Mercator 辅助球面范围：全球海洋 数据源：海洋保护协会（Marine Conservation Institute, MCI） 引用文献：Boyer TP、Levitus S、Garcia HE、Locamini RA、Stephens C 等（2005）《世界海洋0.25°网格年、季、月温度与盐度客观分析》，《国际气候学杂志》25卷：931–945 发布日期：2005年 ArcGIS服务器地址：https://oceans2.arcgis.com/arcgis/ 海洋保护协会将本数据集作为输入数据，用于《构筑骨架型冷水珊瑚全球栖息地适宜性》一文中记载的栖息地预测模型。 本图层可实现以下应用： 可视化：可在Web地图与ArcGIS Desktop中实现在线可视化 分析：可作为地理处理工具与模型构建器的输入数据 栅格函数：制图渲染器—— 详细信息请参阅相关博客。