Sentinel-2 Imagery: Bathymetric with DRA

Retirement Notice: This item is currently in beta and will be retired in December 2026. A replacement item has not been identified at this time. It is not recommended for production use, as functionality and content are subject to change without notice. Sentinel-2, 10 and 60m Multispectral 13-band imagery, rendered on-the-fly. Available for visualization and analytics, this Imagery Layer pulls directly from the Sentinel-2 on AWS collection and is updated daily with new imagery. This imagery layer can be used for multiple purposes including but not limited to bathymetric mapping applications, changing lands and marine environmental monitoring. Geographic Coverage Global Continental land masses from 65.4° South to 72.1° North, with these special guidelines: All coastal waters up to 20 km from the shore All islands greater than 100 km2 All EU islands All closed seas (e.g. Caspian Sea) The Mediterranean Sea Note: Areas of interest going beyond the Mission baseline (as laid out in the Mission Requirements Document) will be assessed, and may be added to the baseline if sufficient resources are identified. Temporal Coverage The revisit time for each point on Earth is every 5 days. This layer is updated daily with new imagery. This imagery layer is designed to include imagery collected within the past 14 months. Custom Image Services can be created for access to images older than 14 months. The number of images available will vary depending on location. Image Selection/Filtering The most recent and cloud free image, for any location, is displayed by default. Any image available, within the past 14 months, can be displayed via custom filtering. Filtering can be done based on Acquisition Date, Estimated Cloud Cover, and Tile ID. Tile_ID is computed as [year][month][day]T[hours][minutes][seconds]_[UTMcode][latitudeband][square]_[sequence]. More… NOTE: Not using filters, and loading the entire archive, may affect performance. Analysis Ready This imagery layer is analysis ready with TOA correction applied. Visual Rendering Default rendering is Bathymetric (bands 4,3,1) with Dynamic Range Adjustment (DRA). This DRA version enables visualization of the full dynamic range of the images. The non-DRA version of this layer can be viewed by switching to the pre-defined Bathymetric raster function. Bands red, green, coastal/aerosol with dynamic range adjustment applied. Useful in bathymetric mapping applications. Rendering (or display) of band combinations and calculated indices is done on-the-fly from the source images via Raster Functions. Various pre-defined Raster Functions can be selected or custom functions created. Available renderings include: Agriculture with DRA, Color-Infrared with DRA, Natural Color with DRA, Short-wave Infrared with DRA, Geology with DRA, NDMI Colorized, Normalized Difference Built-Up Index (NDBI), NDWI Raw, NDWI - with VRE Raw, NDVI – with VRE Raw (NDRE), NDVI - VRE only Raw, NDVI Raw, Normalized Burn Ratio, NDVI Colormap. Multispectral Bands Band Description Wavelength (µm) Resolution (m) 1 Coastal aerosol 0.433 - 0.453 60 2 Blue 0.458 - 0.523 10 3 Green 0.543 - 0.578 10 4 Red 0.650 - 0.680 10 5 Vegetation Red Edge 0.698 - 0.713 20 6 Vegetation Red Edge 0.733 - 0.748 20 7 Vegetation Red Edge 0.773 - 0.793 20 8 NIR 0.785 - 0.900 10 8A Narrow NIR 0.855 - 0.875 20 9 Water vapour 0.935 - 0.955 60 10 SWIR – Cirrus 1.365 - 1.385 60 11 SWIR-1 1.565 - 1.655 20 12 SWIR-2 2.100 - 2.280 20 Additional Notes Overviews exist with a spatial resolution of 150m and are updated every quarter based on the best and latest imagery available at that time. To work with source images at all scales, the ‘Lock Raster’ functionality is available. NOTE: ‘Lock Raster’ should only be used on the layer for short periods of time, as the imagery and associated record Object IDs may change daily. This ArcGIS Server dynamic imagery layer can be used in Web Maps and ArcGIS Desktop as well as Web and Mobile applications using the REST based Image services API. Images can be exported up to a maximum of 4,000 columns x 4,000 rows per request. Data Source Sentinel-2 imagery is the result of close collaboration between the (European Space Agency) ESA, the European Commission and USGS. Data is hosted by the Amazon Web Services as part of their Registry of Open Data. Users can access the imagery from Sentinel-2 on AWS , EarthExplorer or the Copernicus Open Access Hub to download the scenes.停用通知：本项目目前处于公测阶段，将于2026年12月停用，目前尚未确定替代项目。不建议将其用于生产环境，因其功能与内容可能在不另行通知的情况下发生变更。 Sentinel-2 10米与60米分辨率13波段多光谱影像，支持实时渲染。本影像图层可用于可视化与分析，直接从AWS上的Sentinel-2数据集拉取数据，每日更新新增影像。该图层可应用于多种场景，包括但不限于水深测绘、土地变化与海洋环境监测。 地理覆盖范围：覆盖全球大陆地块，范围为南纬65.4°至北纬72.1°，并遵循以下特殊规则：所有距海岸20公里以内的近岸水域；面积大于100平方公里的所有岛屿；所有欧盟成员国岛屿；所有封闭海域（例如里海）；地中海。 注：超出任务基线（详见《任务需求文档》）的感兴趣区域将被评估，若确认有足够资源支持，可纳入基线范围。 时间覆盖范围：地球任意点位的重访周期为每5天一次。本图层每日更新新增影像，设计包含过去14个月内采集的影像。如需访问14个月以上的历史影像，可创建自定义影像服务。可用影像数量因区域而异。 影像选择与过滤：默认显示任意位置最新的无云影像。用户可通过自定义过滤功能，选择过去14个月内的任意可用影像。过滤条件可基于采集日期、估算云量与瓦片ID设置。瓦片ID的格式为：[年份][月份][日期]T[小时][分钟][秒]_[UTM分区码][纬度带][方格编号]_[序列编号]。更多信息…… 注意：不使用过滤器加载完整存档可能会影响性能。 分析就绪特性：本影像图层已完成分析就绪处理，已施加大气顶部（Top of Atmosphere, TOA）校正。 可视化渲染：默认渲染样式为水深测绘样式（使用4、3、1波段），并启用动态范围调整（Dynamic Range Adjustment, DRA）。该DRA版本可实现影像全动态范围的可视化。如需查看非DRA版本的图层，可切换至预定义的水深测绘栅格函数。该样式使用红、绿、海岸气溶胶波段，并应用了动态范围调整，适用于水深测绘应用。 波段组合与计算指数的渲染（或显示）可通过栅格函数从源影像实时生成。用户可选择多种预定义栅格函数，或创建自定义函数。可用渲染样式包括：带DRA的农业样式、带DRA的彩色红外样式、带DRA的自然色样式、带DRA的短波红外样式、带DRA的地质样式、归一化差分水汽指数（Normalized Difference Moisture Index, NDMI）着色版、归一化差分建筑指数（Normalized Difference Built-Up Index, NDBI）、原始归一化差分水体指数（NDWI Raw）、带植被红边的NDWI（NDWI - with VRE Raw）、带植被红边的NDVI（NDVI – with VRE Raw, NDRE）、仅植被红边的NDVI（NDVI - VRE only Raw）、原始NDVI、归一化燃烧比（Normalized Burn Ratio）、NDVI着色映射版。 多光谱波段详情： 1. 波段1：海岸气溶胶，波长范围0.433-0.453 µm，分辨率60m 2. 波段2：蓝光，波长范围0.458-0.523 µm，分辨率10m 3. 波段3：绿光，波长范围0.543-0.578 µm，分辨率10m 4. 波段4：红光，波长范围0.650-0.680 µm，分辨率10m 5. 波段5：植被红边，波长范围0.698-0.713 µm，分辨率20m 6. 波段6：植被红边，波长范围0.733-0.748 µm，分辨率20m 7. 波段7：植被红边，波长范围0.773-0.793 µm，分辨率20m 8. 波段8：近红外（NIR），波长范围0.785-0.900 µm，分辨率10m 9. 波段8A：窄带近红外，波长范围0.855-0.875 µm，分辨率20m 10. 波段9：水汽，波长范围0.935-0.955 µm，分辨率60m 11. 波段10：短波红外-卷云，波长范围1.365-1.385 µm，分辨率60m 12. 波段11：短波红外-1，波长范围1.565-1.655 µm，分辨率20m 13. 波段12：短波红外-2，波长范围2.100-2.280 µm，分辨率20m 附加说明：影像概览图的空间分辨率为150m，每季度基于当时可用的最优最新影像更新一次。为支持全尺度源影像操作，可启用“锁定栅格（Lock Raster）”功能。注意：“锁定栅格”仅可短期用于本图层，因为影像及关联记录的对象ID可能每日发生变更。 本ArcGIS Server动态影像图层可用于Web地图、ArcGIS Desktop，以及基于REST影像服务API的Web与移动应用。单次请求导出的影像最大尺寸为4000列×4000行。 数据来源：Sentinel-2影像由欧洲空间局（European Space Agency, ESA）、欧盟委员会与美国地质调查局（United States Geological Survey, USGS）合作研发。数据由亚马逊云服务（Amazon Web Services, AWS）作为其开放数据注册表（Registry of Open Data）的一部分托管。用户可通过AWS上的Sentinel-2数据集、EarthExplorer或哥白尼开放获取中心（Copernicus Open Access Hub）下载影像场景。