Seafloor Dissolved Oxygen (ml/l)

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. The concentration of dissolved gases in water is of prime importance in considering the quality of water. Sufficient amounts of dissolved oxygen are required for marine-life survival. Dissolved oxygen levels are influenced by temperature and salinity.The ability for oxygen to dissolve in water (solubility) decreases as temperature and salinity increase. Poorly oxygenated areas, or those with a dissolved oxygen level below 1, are considered dead zones or hypoxic zones. Dissolved oxygen is carried to the deep-sea floor by the descending surface waters. Phenomenon Mapped: Seafloor dissolved oxygen Units: Milliliters per liter (ml/l) 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: Garcia HE, Locarnini RA, Boyer TP, Antonov JI (2006) World Ocean Atlas 2005, Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization, and Oxygen Saturation. In: Levitus S, editor. 342 p. NOAA Atlas NESDIS 63, U.S. Government Printing Office, Washington DC. Publication Date: 2006 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.退役通知：本项目自2025年12月起进入成熟支持阶段，并将于2027年12月正式退役。当前已有该项目的新版本可供使用。Esri建议您更新地图与应用以使用新版本。 水中溶解气体的浓度是评估水质的核心指标。海洋生物生存需要充足的溶解氧，而溶解氧含量受温度与盐度共同影响。氧气在水中的溶解能力（溶解度）随温度与盐度升高而降低。溶解氧水平低于1的低氧区域被称为死亡区或缺氧区。溶解氧通过表层水体下沉输送至深海海底。 制图主题：海底溶解氧含量 单位：毫升每升（ml/l） 像元尺寸：30角秒，约合1公里 源数据类型：离散型 像素类型：无符号整数 空间参考：GCS_WGS_1984 镶嵌投影：Web Mercator辅助球体 覆盖范围：全球海洋 数据源：海洋保护协会（Marine Conservation Institute, MCI） 引用文献：Garcia HE, Locarnini RA, Boyer TP, Antonov JI (2006) 《2005年世界海洋图集 第3卷：溶解氧、表观耗氧量与氧饱和度》。收录于：Levitus S 主编，全书共342页。NOAA Atlas NESDIS 第63号，美国政府印刷局，华盛顿特区。 发布日期：2006年 ArcGIS服务器网址：https://oceans2.arcgis.com/arcgis/ 海洋保护协会将本数据集作为输入数据，用于发表于论文《冷水造架珊瑚全球生境适宜性》的预测生境模型构建。 本图层可实现以下用途： 可视化：本图层可用于在线Web地图及ArcGIS Desktop中进行可视化展示。 分析：本图层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——详见此博客以获取更多信息。