[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],["This dataset contains Landsat 5 TM annual composites from 1984 to 2012, using Level L1T orthorectified scenes with top-of-atmosphere (TOA) reflectance. It calculates the Normalized Difference Water Index (NDWI), ranging from -1.0 to 1.0, to measure changes in liquid water content. The composites use all annual scenes, with the most recent pixel as the composite value. The USGS stopped producing Pre-Collection Landsat data in 2017, making this collection complete. Users should now use the dataset LANDSAT/LT05/C01/T1_ANNUAL_NDWI.\n"]]