[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],["The Landsat 4 TM dataset, available from 1982-08-21 to 1993-12-11, provides 8-day Normalized Difference Snow Index (NDSI) composites. These composites, derived from Tier 1 orthorectified scenes, use top-of-atmosphere reflectance. NDSI, calculated with Green and Mid-IR bands (30-meter pixel size), identifies snow. Composites are built from all scenes within each 8-day period, with the most recent pixel as the composite value. The dataset, provided by Google via Earth Engine, is in the public domain and requires USGS acknowledgment.\n"]]