GloboLakes: Lake Surface Water Temperature (LSWT) v4.0 (1995-2016)

Global Observatory of Lake Responses to Environmental Change (GloboLakes) was a project funded by the Natural Environment Research Council (NERC) with the following grant references; NE/J023345/2, NE/J02211X/1, NE/J023396/1, NE/J021717/1 and NE/J022810/1. This dataset contains the GloboLakes LSWT v4.0 of daily observations of Lake Surface Water Temperature (LSWT) its uncertainty and quality levels. The LSWTs are obtained by combining the orbit data from the AVHRR (Advanced Very High Resolution Radiometer) on MetOpA, ATSR-2 (Along Track Scanning Radiometer) on ERS-2 (European Remote Sensing Satellite) and AATSR (Advanced Along Track Scanning Radiometer) on Envisat. The temperatures from the different instruments have been derived with the same algorithm and harmonised to insure consistency for the period 1995-2016. The GloboLakes LSWT v4.0 was produced by the University of Reading in 2018 for long term observations of surface water temperature for about 1000 lakes globally. The dataset consist of two sets of files: 1) a single file per day on a 0.05° regular latitude- longitude grid covering the period from June 1995 to December 2016 (folder = daily), 2) a file per lake which contains the time series (daily) of the lake on a 0.05° regular grid (folder = per-lake). The list of the GloboLakes lakes is included as a CSV file and it contains name, GLWD identifier, coordinate of the lake centre and a set of coordinates that can be used to locate the lake in the daily-file dataset. The LSWTs consists of the daily observations of the temperature of the water (skin temperature). Uncertainty estimates and quality levels are provided for each value.

湖泊环境变化响应全球观测站（GloboLakes）是由自然环境研究委员会（Natural Environment Research Council, NERC）资助的科研项目，资助编号为NE/J023345/2、NE/J02211X/1、NE/J023396/1、NE/J021717/1及NE/J022810/1。本数据集包含GloboLakes湖泊表面水温（Lake Surface Water Temperature, LSWT）v4.0版本数据，涵盖每日湖泊表面水温观测值、对应的不确定性及质量等级。该湖泊表面水温数据通过整合多颗卫星的轨道观测数据生成，包括搭载于MetOpA平台的先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer, AVHRR）、搭载于欧洲遥感卫星2号（European Remote Sensing Satellite 2, ERS-2）的沿轨扫描辐射计（Along Track Scanning Radiometer, ATSR-2），以及搭载于Envisat卫星的先进沿轨扫描辐射计（Advanced Along Track Scanning Radiometer, AATSR）。不同仪器获取的水温数据采用统一算法反演，并经过标准化协调以确保1995年至2016年时段数据的一致性。GloboLakes LSWT v4.0数据集由英国雷丁大学于2018年制作，用于全球约1000个湖泊的表层水温长期观测。本数据集包含两类文件：1）1995年6月至2016年12月期间，每日生成一个文件，采用0.05°规则经纬度网格（文件夹命名为daily）；2）每个湖泊对应一个文件，存储该湖泊的日分辨率时间序列数据，同样采用0.05°规则网格（文件夹命名为per-lake）。GloboLakes湖泊清单以逗号分隔值（Comma-Separated Values, CSV）格式文件提供，其中包含湖泊名称、GLWD标识符、湖泊中心坐标，以及可用于在每日文件数据集中定位该湖泊的一组坐标。本数据集的LSWT为每日水体表层温度（表皮温度），每个观测值均配有不确定性估计值与质量等级标签。

搜集汇总

背景与挑战

背景概述

GloboLakes数据集提供了1995-2016年间全球约1000个湖泊的每日湖面水温观测数据，数据来源于多颗卫星的遥感观测，并经过统一算法处理以确保一致性。数据集包含每日网格数据和单个湖泊时间序列，同时提供温度不确定性估计和质量等级信息，适用于长期湖泊表面水温变化研究。