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lihaijun , - Likely/possible contributing factors to apparent discrepancy: o 30m pixel size with area-based sampling (Possibly Greatest Factor)  SRTM and ASTER are both use area-based sampling grids where the elevation value of each pixel is an average of elevations over the area within that pixel...

@alvioli,
We apologize for the delayed response. I have forwarded your inquiry to our Subject Matter Expert and will be in contact with the data provider. Once we receive a response, we will let you know.
Kind regards,
LP DAAC User Services

anoop_vm , Users are advised that ASTER SWIR data acquired from April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document for more details: https://lp...

@akapadia ,
We have forwarded your inquiry to our Subject Matter Expert for further assistance.
LP DAAC User Services

Hi Joe,
Sorry for the delay, we are in contact with the data provider and as soon as we hear what is going on I will let you know.
Thanks,
Brett

Version 3.21 of the Application for Extracting and Exploring Analysis Ready Samples (AρρEEARS) has been released. This release includes two new features: Input feature preview: allows users to see the spatial details of point and area requests immediately after request submission. Layer Selector: al...

The LP DAAC is pleased to announce the availability of the Airborne Hyperspectral Reflectance Indian Cave Nebraska Multi-Day 1 m product. The data are available in an ENVI format (one .hdr and one .dat file per scene). This dataset provides hyperspectral reflectance data from the Indian Cave Forest ...

The following USGS datasets will no longer be accessible through NASA’s Earthdata Search as of January 11, 2023: Earth Observing-1 Advanced Land Imager (EO1_ALI) Earth Observing-1 Hyperion (EO1_Hyperion) Tri-Decadal Global Landsat Orthorectified TM Scene V1 (TM) Tri-Decadal Global Landsat Orthorecti...

Distribution of all Landsat Collection 1 data and science products in the USGS archives will end on December 30, 2022. Users are encouraged to migrate their workflow to Landsat Collection 2 at their earliest convenience. Due to advancements in data processing and algorithm development, users are dis...

Terra ASTER data production remains on hold following the Terra Constellation Exit Maneuvers (CEMs) that occurred between October 11 and 20, 2022. Terra ASTER data production will be delayed for data acquired after October 23, 2022, until the processing issue is resolved at the Ground Data Station (...