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We further looked into the granules to check the Aerosol Optical Depth (AOD) pattern you reported and below is the summery: The Missing Aerosol Optical Data (AOD) is not the systematic issue. ​ They are relevant to the pixel selections. For the following conditions, the AOD values will be​ fill valu...

Also, the Dark Target AOD cannot be retrieved over brighter surfaces. So, you may be getting confused by an apparent pattern that forms over the equatorial and tropical areas, where most of the areas are brighter because of clouds and deserts, and so there is not much retrieval of DT AOD, creating o...

Dear Laxmi: Please note the following: Have you tried to cross-reference the missing areas with the MODIS cloud mask (MxD35_L2) to see if those areas have persistent cloud. You can also reference a RGB reflectance image for this. With regard to this question: coverage of the MODIS swath keeps on cha...

Dear Laxmi:
Can you provide an example from files that exhibit such behavior (couple of file names should be sufficient)?

This is because VNP46A2 is a daily products containing observation for the 24h period. You can find UTC-Time parameter in VNP46A1 product that lists UTC view time (the time of data acquisition). For more information consult product users guide at: https://ladsweb.modaps.eosdis.nasa.gov/api/v2/conten...

Here at LAADS DAAC we don't have contact information for land products' science team members. The product PI for LST is Zhengming Wan at ERI, University of California, Santa Barbara so you can check there. You can contact NASA'S Land Processes Distributed Active Archive Center (LP DAAC), the primary...

Please refer to:
https://ladsweb.modaps.eosdis.nasa.gov/alerts-and-issues/113959

The missing files are in the queue and should be available soon.

We received your inquiry about the bi coefficients applied in LST retrieval. These coefficients are used to generate high-level MODIS products, which were produced using algorithms developed by MODIS science team members on top of our Level 1B data. We suggest you contact the people in this area as ...

The NRT product is provided by Atmosphere Science Investigator-led Processing System, Space Science and Engineering Center, University of Wisconsin-Madison and not by LAADS DAAC. So, you should find it at:
https://cmr.earthdata.nasa.gov/stac/ASIPS/collections/CLDMSK_L2_VIIRS_SNPP_NRT