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by alberto_silva_2024
Tue Jan 06, 2026 4:14 pm America/New_York
Forum: Home
Question: Metadata in ASTER v004 (TIR + VNIR/SWIR) granules
Replies: 7

Re: Metadata in ASTER v004 (TIR + VNIR/SWIR) granules

The granule IDs are (the location is in South-West Peru, Arequipa Region and are old images from 2006, before the 2008 SWIR sensor failure. AST_05_00404292006151032_20250527002024 (for surface TIR emissivity) AST_07XT_00404292006151032_20250527005505 (for surface VNIR/SWIR reflectivity) See also the...
by alberto_silva_2024
Fri Jan 02, 2026 3:57 pm America/New_York
Forum: Home
Question: Metadata in ASTER v004 (TIR + VNIR/SWIR) granules
Replies: 7

Re: Metadata in ASTER v004 (TIR + VNIR/SWIR) granules

Dear EarthData LP DAAC team: Thank you for your answer, but please I need some additional information (or confirmation) about the following: 1) You said "Level-2 products are already in physical units. All you need to do is take the pixel value and multiply it by the scale factor". This me...
by alberto_silva_2024
Wed Dec 31, 2025 6:42 pm America/New_York
Forum: Home
Question: Metadata in ASTER v004 (TIR + VNIR/SWIR) granules
Replies: 7

Metadata in ASTER v004 (TIR + VNIR/SWIR) granules

Dear EARTHDATA team: I some days ago downloaded the following ASTER dataset of a location in my country (Peru) to do some geological mapping for a research project, using public domain GIS software (QGIS): 1) AST_05 (TIR emissivity, april 2006, see attachment) 2) AST_07XT (VIS and SWIR reflectivity,...