[[["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"]],[],[[["\u003cp\u003eThis page provides access to various satellite datasets, including Landsat (4, 5, 7, 8, 9), ASTER, and Sentinel-3 OLCI.\u003c/p\u003e\n"],["\u003cp\u003eMost datasets feature Top-of-Atmosphere (TOA) reflectance, offering calibrated measurements of surface reflectivity.\u003c/p\u003e\n"],["\u003cp\u003eLandsat datasets are categorized into Collection 2, with Tier 1 representing the highest quality scenes and Tier 2 encompassing other usable data.\u003c/p\u003e\n"],["\u003cp\u003eASTER data includes multispectral imagery ranging from visible to thermal infrared wavelengths, captured by NASA's Terra spacecraft.\u003c/p\u003e\n"],["\u003cp\u003eSentinel-3 OLCI offers ocean and land color data at a spatial resolution of 300m, with global coverage approximately every 2 days.\u003c/p\u003e\n"]]],["Several datasets provide top-of-atmosphere (TOA) reflectance data. Landsat collections (4, 5, 7, 8, and 9) from USGS offer Tier 1 and Tier 2 calibrated TOA reflectance, with Landsat 7's orbit drifting. The Sentinel-3 OLCI dataset provides radiances at 21 spectral bands. ASTER's multispectral data collection is paused due to technical issues. Calibration coefficients are extracted from image metadata, and TOA computation details are available in Chander et al. (2009).\n"],null,[]]