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MCD19A1

Posted: Wed Mar 06, 2024 4:05 am America/New_York
by afnanullah279
Hi,
I am currently doing research on PM2.5 prediction by using both ground based and satellite data using Machine Learning approach. From Satellite data I am using MODIS Aqua/Terra combined product (MCD19A2 - Optical_Depth_550) and now I want to use MCD19A1 product surface reflectance green band aligned with MCD19A2 optical_depth_550 but not sure which one band should I use from surf_rel1-12. either surf_refl4 or other band but should be green band. please help me out.
Thanks in advance

Re: MCD19A1

Posted: Tue Mar 12, 2024 11:53 am America/New_York
by LP DAAC - lien
Hello,
Sorry for the delay. We wanted to get confirmation about this from the PI/Developer of the MAIAC product because Band 4, 11, and 12 fall with in the green wavelength. He did confirm what we suspected, it is Band 4 that is aligned with the MCD19A2 optical_depth_550. Please let us know if you have any further questions.
Thanks,
Brett

Re: MCD19A1

Posted: Wed Mar 13, 2024 7:14 am America/New_York
by afnanullah279
Thank you for your kind response. could you please provide the details of Sur_refl1-12 details like bands name with wavelength.

Re: MCD19A1

Posted: Wed Mar 13, 2024 10:20 am America/New_York
by LP DAAC - lien
Absolutely, please go to the MODIS Overview site as that has lots of great information including the complete list of the 36 MODIS spectral bands and there pertinent information: https://lpdaac.usgs.gov/data/get-started-data/collection-overview/missions/modis-overview/
Thanks,
Brett

Re: MCD19A1

Posted: Fri Jul 05, 2024 6:48 am America/New_York
by afnanullah279
Thanks for your kind response. Could be please tell me which bands should I use if I want to use RGB wavelength bands. Please mention Bands names.

Thanks

Re: MCD19A1

Posted: Fri Jul 05, 2024 2:11 pm America/New_York
by LP DAAC - lien
Hello,
MODIS true color band combination is 1,4,3 RGB. You may need to stretch it sometimes, but that should do it.
Thanks,
Brett