Assistance Request: Efficient Global Coverage Using ASTER DEM V004 Granules
Posted: Mon Dec 01, 2025 5:10 pm America/New_York
Hello,
I am currently working on a global elevation mapping project and am utilizing the ASTER Digital Elevation Model V004 data product. My objective is to compile a global elevation dataset. However, for the purposes of my analysis, I only require one granule per geographic location—essentially, the minimum number of granules necessary to achieve maximum global coverage.
Here are the details of my access attempt:
URL Accessed:
https://search.earthdata.nasa.gov/search/granules?p=C3306855744-LPCLOUD&pg[0][v]=f&pg[0][gsk]=-start_date&q=C3306855744-LPCLOUD
Date and Time of Access:
October 30, 2025
Research Type:
Global elevation mapping
Data Product:
ASTER Digital Elevation Model V004
Access Method:
Browser (Microsoft Edge, configured to accept cookies) and occasionally via curl
Curl Version:
curl 8.13.0 (Windows)
Platform and OS:
PC running Windows 10
Given the vast temporal and spatial extent of the ASTER DEM V004 dataset, I am seeking advice on how to efficiently retrieve a representative subset of granules that ensures complete global coverage with minimal redundancy. Is there a recommended strategy, tool, or query method within Earthdata Search or another NASA service that can help identify and download only one granule per unique location?
Any guidance or best practices on how to approach this would be greatly appreciated.
Thank you in advance for your support.
I am currently working on a global elevation mapping project and am utilizing the ASTER Digital Elevation Model V004 data product. My objective is to compile a global elevation dataset. However, for the purposes of my analysis, I only require one granule per geographic location—essentially, the minimum number of granules necessary to achieve maximum global coverage.
Here are the details of my access attempt:
URL Accessed:
https://search.earthdata.nasa.gov/search/granules?p=C3306855744-LPCLOUD&pg[0][v]=f&pg[0][gsk]=-start_date&q=C3306855744-LPCLOUD
Date and Time of Access:
October 30, 2025
Research Type:
Global elevation mapping
Data Product:
ASTER Digital Elevation Model V004
Access Method:
Browser (Microsoft Edge, configured to accept cookies) and occasionally via curl
Curl Version:
curl 8.13.0 (Windows)
Platform and OS:
PC running Windows 10
Given the vast temporal and spatial extent of the ASTER DEM V004 dataset, I am seeking advice on how to efficiently retrieve a representative subset of granules that ensures complete global coverage with minimal redundancy. Is there a recommended strategy, tool, or query method within Earthdata Search or another NASA service that can help identify and download only one granule per unique location?
Any guidance or best practices on how to approach this would be greatly appreciated.
Thank you in advance for your support.