Accessing 6-Min L2 Swath 375m data beyond NRT.
Posted: Mon Mar 02, 2026 4:46 am America/New_York
Hello,
I am trying to access the VIIRS LST 375 m swath product (VNP21IMG) for research and model training purposes. On the Earthdata catalog page for VNP21IMG_NRT (https://www.earthdata.nasa.gov/data/catalog/lancemodis-vnp21img-nrt-2
) it states a temporal coverage of 2023–present, but I can only retrieve files from the last ~7 days when using the NRT archive (nrt3.modaps.eosdis.nasa.gov/.../VNP21IMG_NRT/...).
My understanding from other VIIRS LST products (e.g., VNP21 at 750 m) is that science products are archived long-term and can be downloaded historically via LAADS/LP DAAC. I cannot find any equivalent long-term archive for the 375 m swath LST product either on LAADS (allData/5200/VNP21IMG/…) or via Earthdata Search when filtering for a non-NRT product.
Could you please clarify:
1. Whether an archived, non-NRT version of VNP21IMG (375 m) exists with full historical coverage beyond the NRT rolling window?
2. If it exists, what is the correct product name/identifier and archive path (LAADS API, Earthdata Search, etc.)?
3. If it does not exist, whether there are plans to archive the 375 m LST swath product historically?
Thank you!
I am trying to access the VIIRS LST 375 m swath product (VNP21IMG) for research and model training purposes. On the Earthdata catalog page for VNP21IMG_NRT (https://www.earthdata.nasa.gov/data/catalog/lancemodis-vnp21img-nrt-2
) it states a temporal coverage of 2023–present, but I can only retrieve files from the last ~7 days when using the NRT archive (nrt3.modaps.eosdis.nasa.gov/.../VNP21IMG_NRT/...).
My understanding from other VIIRS LST products (e.g., VNP21 at 750 m) is that science products are archived long-term and can be downloaded historically via LAADS/LP DAAC. I cannot find any equivalent long-term archive for the 375 m swath LST product either on LAADS (allData/5200/VNP21IMG/…) or via Earthdata Search when filtering for a non-NRT product.
Could you please clarify:
1. Whether an archived, non-NRT version of VNP21IMG (375 m) exists with full historical coverage beyond the NRT rolling window?
2. If it exists, what is the correct product name/identifier and archive path (LAADS API, Earthdata Search, etc.)?
3. If it does not exist, whether there are plans to archive the 375 m LST swath product historically?
Thank you!