[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","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"]]