Earthdata Forum

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

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

Thank you for your kind response. could you please provide the details of Sur_refl1-12 details like bands name with wavelength.

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

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

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