1

Trying to extract MODIS Deep Blue Aerosols from a number of years.

I have managed to open the HDF files in QGIS and ArcMap; however, have failed to reproject out of the sinusoidal grid so that the UK matches up with reference imagery.

I have tried MRT, which gave me an error every time I loaded a 04_L2 file into as follows

Error in Module: ReadHdrFile Opening Input Header File

I couldn't find an explanation except perhaps, that I needed to use MRTSwath instead.

When using MRTSwath, the file loads with no problems but only displays two bands: the Aerosol_Cldmask and the Cloud_Pixel_Distance. I imagine because these are the only two bands still in a swath rather than grid projection.

I have looked into doing the conversion through gdal, however, when getting the needed GCP's via a gdalinfo command on the subdirectory, the produced information fails to list anything to do with GCPs. I thought this might be due to the version of gdal I have, but I seem to have version 2.2.4 which is well past what I believe I need for GCPs to be produced.

Any alternatives for reprojecting?

0

To answer this if anyone else is having issues, NASA actually provide post-processing for MODIS imagery. You can subset, transform to a tif, and reproject to a number of different projections.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.