CLMS Water Bodies monthly time series for Mauritania at 30 arc seconds (ca. 1000 meter) resolution (2019 - 2023)

Water Bodies from Copernicus Land Monitoring Service (CLMS) as monthly time series for Mauritania at 30 arc seconds (ca. 1000 meter) resolution (2019 - 2023)

Source data:- CLMS: Water Bodies 2014-2020 (raster 300 m), global, 10-daily – version 1: https://land.copernicus.eu/en/products/water-bodies/water-bodies-global-v1-0-300m - CLMS: Water Bodies 2020-present (raster 300 m), global, monthly – version 2: https://land.copernicus.eu/en/products/water-bodies/water-bodies-global-v2-0-300m

Water is fundamental to life on Earth. Water quality, including aspects like turbidity and trophic state, is vital for assessing a water body's ecological well-being and its suitability for drinking. Understanding the water's surface temperature is key for monitoring climate change and can influence weather patterns. Tracking water levels in lakes and rivers helps in flood prediction, irrigation planning, and hydroelectric power generation. The presence and extent of ice on lakes and rivers can have significant implications for regional climates, ecosystems, and human activities. Moreover, the surface extent of water bodies, whether permanent or ephemeral, informs land management across various sectors. In an era marked by environmental change, these metrics offer insights into sustainable water resource management.The Water Bodies product group aims to address these critical issues by providing tailored datasets to users which are applicable across a wide array of sectors. It includes Lake Surface Water Temperature, providing real-time and historical data; Lake Water Quality in various resolutions; Water Bodies datasets for surface extent; Lake and River Water Level information; the River and Lake Ice Extent product for ice presence; and the Aggregated River and Lake Ice Extent product, showing percent ice coverage. These products support applications like food security, public health safeguarding, climate studies, and responsible water management practices.

Processing steps:To cover the complete time period from 2019 to 2023 two data products of the Water Bodies product group are processed. Up to December of 2020 the Water Bodies at 10-daily resolution have been used, from January 2021 the Water Bodies at monthly resolution have been used. Both original datasets have been downloaded for the area of Mauritania (NUTS MR) within Latitude-Longitude/WGS84 spatial reference system. Then both datasets have been downsampled to 30 arc seconds (ca. 1000 meter) using the most frequent occuring value. The 10-daily data have been aggregated to monthly resolution using the most frequent occurring value.

File naming:Until December 2020: c_gls_WB300_GLOBE_PROBAV_V1.0.1_MR_WB_res_YYYY_MM_01T00_00_00.tif e.g.: c_gls_WB300_GLOBE_PROBAV_V1.0.1_MR_WB_res_2020_12_01T00_00_00.tif From January 2021 on: c_gls_WB300_GLOBE_S2_V2.0.1_MR_WB_res_YYYY_MM_01T00_00_00.tif e.g.: c_gls_WB300_GLOBE_S2_V2.0.1_MR_WB_res_2023_12_01T00_00_00.tif

The date within the filename is year and month of aggregated timestamp.NOTE: data for 2023-04 are missing, since they are not available from CLMS

Pixel values:0: Sea70: Water255: No water

Projection + EPSG code:Latitude-Longitude/WGS84 (EPSG: 4326)

Spatial extent:north: 27:17:30Nsouth: 14:43:30Nwest: 17:04:30Weast: 04:48:00W

Temporal extent:January 2019 - December 2023 (except: April 2023)

Spatial resolution:30 arc seconds (approx. 1000 m)

Temporal resolution:monthly

Software used:GRASS GIS 8.3.2

Format: GeoTIFF

Original dataset license:Generated using European Union's Copernicus Land Monitoring Service information

Processed by:mundialis GmbH & Co. KG, Germany (https://www.mundialis.de/)

Contact: mundialis GmbH & Co. KG, [e-mail]

基于哥白尼陆地监测服务（Copernicus Land Monitoring Service, CLMS）的毛里塔尼亚水域数据集：2019-2023年逐月时间序列，空间分辨率为30角秒（约1000米）

源数据：
- 哥白尼陆地监测服务2014-2020年水域数据集（300米栅格，全球范围，10日更新，V1版本）：https://land.copernicus.eu/en/products/water-bodies/water-bodies-global-v1-0-300m
- 哥白尼陆地监测服务2020年至今水域数据集（300米栅格，全球范围，逐月更新，V2版本）：https://land.copernicus.eu/en/products/water-bodies/water-bodies-global-v2-0-300m

水是地球生命的根基。水质（包括浊度、营养状态等指标）是评估水域生态健康状况及其饮用水适用性的核心依据。水体表面温度是监测气候变化的关键参数，同时也会影响天气格局。监测湖泊与河流水位有助于洪水预报、灌溉规划以及水力发电。河湖冰覆盖的存在与范围对区域气候、生态系统及人类活动均有重要影响。此外，无论永久还是临时水域的地表范围，可为多领域土地管理提供决策参考。在环境变化愈发显著的当下，上述指标可为可持续水资源管理提供科学洞察。

哥白尼陆地监测服务的水域产品组旨在通过面向多领域用户定制适配的数据集，解决上述关键问题。该产品组涵盖：湖泊表面水温（提供实时与历史数据）、多分辨率湖泊水质数据、水域地表范围数据集、河湖水位信息、河湖冰覆盖范围产品（用于识别冰情）以及聚合式河湖冰覆盖范围产品（展示冰覆盖率百分比）。这些产品可支撑粮食安全、公共健康保障、气候变化研究以及负责任水资源管理等诸多应用场景。

处理流程：
为覆盖2019至2023年完整时间范围，本数据集对水域产品组的两款原始数据进行了处理。2020年12月及之前的数据采用10日分辨率的水域数据集，2021年1月起则采用逐月分辨率的水域数据集。首先在WGS84经纬度空间参考系下，下载毛里塔尼亚（NUTS MR区划）范围内的两款原始数据集；随后以众数重采样法将两款数据集重采样至30角秒（约1000米）的空间分辨率；此外，将10日分辨率的数据以众数法聚合为逐月分辨率。

文件命名规则：
2020年12月及之前版本：c_gls_WB300_GLOBE_PROBAV_V1.0.1_MR_WB_res_YYYY_MM_01T00_00_00.tif，示例：c_gls_WB300_GLOBE_PROBAV_V1.0.1_MR_WB_res_2020_12_01T00_00_00.tif
2021年1月及之后版本：c_gls_WB300_GLOBE_S2_V2.0.1_MR_WB_res_YYYY_MM_01T00_00_00.tif，示例：c_gls_WB300_GLOBE_S2_V2.0.1_MR_WB_res_2023_12_01T00_00_00.tif
文件名中的日期为聚合后时间戳的年份与月份。
注意：2023年4月的数据缺失，因哥白尼陆地监测服务未提供该时段数据。

像素值含义：
0：海洋
70：水体
255：无水体

投影与EPSG编码：WGS84经纬度坐标系（EPSG: 4326）

空间范围：
北纬：27°17′30″
南纬：14°43′30″
西经：17°04′30″
东经：04°48′00″

时间范围：2019年1月至2023年12月（2023年4月除外）

空间分辨率：30角秒（约1000米）

时间分辨率：逐月

使用软件：GRASS GIS 8.3.2

数据格式：GeoTIFF

原始数据集版权：基于欧盟哥白尼陆地监测服务数据生成

处理方：德国mundialis GmbH & Co. KG（https://www.mundialis.de/）

联系方式：德国mundialis GmbH & Co. KG，邮箱：[e-mail]