[[["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"]],[],[],["The Landsat 4 TM dataset, available from 1982-08-13 to 1993-11-17, provides 32-day composites of the Normalized Difference Snow Index (NDSI), derived from Tier 1 orthorectified scenes' top-of-atmosphere reflectance. Each composite includes all images from a 32-day period with the most recent pixel value. The NDSI, ranging from -1.0 to 1.0, uses green and mid-IR bands to identify snow. This dataset is in the public domain, provided by USGS, and accessible through Google Earth Engine.\n"]]