Forum

Hello,     I am trying one flag at a time, in addition to LAND,  to see the impact. I tried qualityExpression=!l2_flags.LAND and  !l2_flags.CLDICE -- but I still see data when clouds are present. Should it be 'or' so that either land or cloudy pixel will be excluded?...

Thank you.
Amita

Thanks Don. But it is not so obvious in other bands -- just 1640 nm! Is that to be expected?
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Thanks.
Amita

Hello, I am processing MODIS L1 to L2 at 1) 1 km and at 2) 250 m. Please see the attached images - in 1 km image I see stripes. In my par file I did not specify any resolution -- considering that 1 km would be default. Can you please help with this? https://oceancolor.gsfc.nasa.gov/forumdata/attach/...

Thanks George.I am interested in just Rhos for all bands. If I did not specify PRODFAIL, according to you message it would it still exclude invalid pixels - correct?In my averaged image Rhos which are not valid show up as '0'. Is there a way to set them as NaN or other undefined value?Thanks...

Hello,      I have been able to mosaic several images using gpt. I already have reprojected files so I use them to mosaic multiple images. I have the following questions I need help with.     1) Is it OK to use reprojected files and l2flags (for criteria to mosaic) for ...

Thanks for reply George.
Initially I will not be merging images from MODIS and OLCI -  but merge them separately. I just looked at the link you sent -- great it explained what I was asking for!
Thanks a lot for your help.
Amita

Hello,    I am trying to use gpt  MosaicGeneral to merge MODIS and OLCI images for each day. I have the following questions:     1)  It looks like this procedure will also reproject images. Or should I use gpt to reproject seperatly?     2) Can I use this...

Thank you so very much!
Amita

Hello,   I started generating multiyear Aqua MODIS L2 data at 250 m resolution.  I see on https://oceancolor.gsfc.nasa.gov/docs/modis_hires/ that there are Hires  MODIS sensor variants (HMODISA and HMODIST) that l2gen uses! I do not see these options in GUI and not sure whether t...