Earthdata Forum

I sincerely appreciate the support of your MODIS data, which has been widely used in scientific research, especially in the field of atmosphere. However, the MODIS Raw Radiances are not available on your site (https://ladsweb.modaps.eosdis.nasa.gov). I want obtain these data to try retrieving particulate matter in atmosphere considering that reflectance products(e.g., MOD021KM) may have errors leaded by radiometric calibration. I sincerely hope that you have received my request to provide me with some data. Thank you again.

The MODIS Raw Radiance data are not available because these are not approved for public distribution. The Level 1B (M*D02*KM) are science quality data and approved for distribution.