GloboLakes: high-resolution global limnology dataset v1

The data are high-resolution datasets related to in-land water for limnology (study of in-land waters) and remote sensing applications. This includes: distance-to-land, distance-to-water, water-body identifier and lake-centre co-ordinates on a high-resolution (1/360x1/360 degree) grid, produced by the Department of Meteorology at the University of Reading.

Datasets containing information to locate and identify water bodies have been generated from high-resolution (1/360x1/360 degree, about 300mx300m) data locating static-water-bodies recently released by the Land Cover Climate Change Initiative (LC CCI) of the European Space Agency. The new datasets provide: distance to land, distance to water, water body identifiers and lake centre locations. The lake identifiers (IDs) are from the Global Lakes and Wetlands Database (GLWD), and lake centres are defined for in-land waters for which GLWD IDs were determined. The new datasets therefore link recent lake/reservoir/wetlands extent to the GLWD, together with a set of coordinates which locates unambiguously the water bodies in the database.

The LC CCI water bodies dataset has been obtained from multi-temporal metrics based on time series of the backscattered intensity recorded by ASAR (Advanced Synthetic Aperture Radar) on Envisat between 2005 and 2010. Temporal change in water body extent is common. Future versions of the LC CCI dataset are planned to represent temporal variation, and this will permit these derived datasets to be updated.

The paper associated with this dataset is: L.Carrea O. Embury C.J. Merchant "High-resolution datasets related to in-land water for limnology and remote sensing applications: distance-to-land, distance-to-water, water-body identifi?er and lake-centre co-ordinates" Geoscience Data Journal, submitted. A PDF will be added to the archive when available.

本数据集为高分辨率内陆水体相关数据集，适用于湖沼学（limnology，研究内陆水体的学科）及遥感应用场景。其包含：雷丁大学气象系生成的高分辨率（1/360×1/360度）网格上的到陆地的距离、到水体的距离、水体标识符及湖中心坐标。

包含水体定位与识别信息的数据集，是基于欧洲空间局（European Space Agency）土地覆盖气候变化倡议（LC CCI）近期发布的高分辨率（1/360×1/360度，约300米×300米）静态水体定位数据生成的。新数据集提供：到陆地的距离、到水体的距离、水体标识符及湖中心位置。湖标识符（IDs）源自全球湖泊与湿地数据库（GLWD），且仅为具有GLWD ID的内陆水体定义湖中心。因此，本新数据集将近期湖泊/水库/湿地范围与GLWD关联，并提供一套可明确标识数据库中水体位置的坐标。

LC CCI水体数据集源自2005至2010年间环境卫星（Envisat）搭载的高级合成孔径雷达（ASAR）记录的后向散射强度时间序列所构建的多时相指标。水体范围的时间变化较为常见，未来版本的LC CCI数据集计划纳入时间变异信息，从而支持本衍生数据集的更新。

与本数据集相关的论文为：L.Carrea、O.Embury、C.J.Merchant 所著《适用于湖沼学及遥感应用的高分辨率内陆水体数据集：到陆地的距离、到水体的距离、水体标识符与湖中心坐标》，已投稿至《地球科学数据期刊》（Geoscience Data Journal）。待论文PDF可用时，将添加至数据集存档中。