Green Chlorophyll Vegetation Index (GCI) - Switzerland [1990-1999, Landsat]

This dataset is an time-serie of Landsat Analysis Ready Data (ARD)- derived Green Chlorophyll Vegetation Index (GCI) computed from Landsat 5-7-8 data. GCI is used to estimate the content of leaf chlorophyll in various species of plants using the forumla GCI=(NIR/Green) – 1. See Gitelson et al. (2003) DOI: 10.1029/2002gl016450 The chlorophyll content reflects the physiological state of vegetation; it decreases in stressed plants and can therefore be used as a measurement of vegetation health. GCI values ranges from -1 to +1. Values are provided as integer and multiplied by 1000 Metrics: annual (_annual) and seasonal (_spring; _summer; _autumn; _winter) mean (_nanmean), standard dev (_nanstd), min (_nanmin), max (_nanmax), median (_nanmedian), and amplitude (_range) Data format: GeoTiff This dataset has been genereated with the Swiss Data Cube (http://www.swissdatacube.ch) in the frame of the ValPar.CH project

本数据集为基于Landsat 5、7、8号卫星数据计算得到的时序Landsat分析就绪数据（Analysis Ready Data, ARD）衍生绿叶绿素植被指数（Green Chlorophyll Vegetation Index, GCI）数据集。GCI的计算公式为GCI=(NIR/Green) – 1，该公式引自Gitelson等人2003年的研究（DOI: 10.1029/2002gl016450）。叶绿素含量可反映植被的生理状态，受胁迫的植物其叶绿素含量会下降，因此GCI可作为植被健康状况的评估指标。GCI的取值范围为-1至+1，原始数值已乘以1000并以整数形式存储。统计指标涵盖年际（标记为_annual）与季节（分别标记为_spring、_summer、_autumn、_winter）维度下的平均值（_nanmean）、标准差（_nanstd）、最小值（_nanmin）、最大值（_nanmax）、中位数（_nanmedian）以及振幅（_range）。数据格式为GeoTiff。本数据集依托瑞士数据立方（Swiss Data Cube, http://www.swissdatacube.ch），在ValPar.CH项目框架下构建完成。