Water and Wetness 2018 (raster 100 m), Europe, 3-yearly - version 2, Nov. 2020

The Copernicus High Resolution Layer Water and Wetness (WAW) 2018 is a thematic product showing the occurrence of water and wet surfaces over the period from 2012 to 2018 for the EEA38 area and the United Kingdom. This metadata refers to the 100 meter aggregate raster, provided as a full EEA38 and United Kingdom mosaic (fully conformant to with the EEA reference grid). The production of the High Resolution Water and Wetness layers was coordinated by the European Environment Agency (EEA) in the frame of the EU Copernicus programme Two Water and Wetness products are available: - The main Water and Wetness (WAW) product, with defined classes of (1) permanent water, (2) temporary water, (3) permanent wetness and (4) temporary wetness. - The additional expert product: Water and Wetness Probability Index (WWPI). The products show the occurrence of water and indicate the degree of wetness in a physical sense, assessed independently of the actual vegetation cover and are thus not limited to a specific land cover class and their relative frequencies. You can read more about the product here: https://land.copernicus.eu/en/products/high-resolution-layer-water-and-wetness/water-and-wetness-status-2018.哥白尼高分辨率水与湿度（Water and Wetness, WAW）2018数据集是一款专题产品，展示了2012年至2018年间EEA38区域与英国境内的水体及湿润地表分布状况。本元数据对应100米分辨率聚合栅格产品，以完整的EEA38区域与英国拼接影像形式提供（完全符合EEA参考网格规范）。高分辨率水与湿度图层的制作由欧洲环境署（European Environment Agency, EEA）在欧盟哥白尼计划框架下统筹开展。 目前共提供两款水与湿度产品： - 核心水与湿度（WAW）产品，包含四类明确地物类别：(1) 永久性水体、(2) 临时性水体、(3) 永久性湿润地表、(4) 临时性湿润地表。 - 附加专家级产品：水与湿度概率指数（Water and Wetness Probability Index, WWPI）。 上述产品用于表征水体分布，并从物理层面量化湿润程度，其评估过程独立于实际植被覆盖情况，因此不受特定土地覆盖类别的限制，同时涵盖各类别相对出现频率。 您可通过以下链接查阅该产品的更多详细信息：https://land.copernicus.eu/en/products/high-resolution-layer-water-and-wetness/water-and-wetness-status-2018.