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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...

Hello,  I was wondering if I can get some help on the following issue: We are trying to use Aqua-MODIS Rhos at 250m over the Chesapeake Bay for deriving algal bloom and hypoxia base on an AI algorithm. Because of the cloud cover a lot of pixels are unusable when colocating with in situ data.
...

Hello,  I am converting Aqua MODIS data from L1 to L2. For the atmospheric correction I get ancillary data using getanc.py.  Everything worked fine for years 2012 to 2020. But for 2011 I get the following errors: File "/usr/local/cb/ocssw/scripts/getanc.py", line 196, in <module>...

Hi John,
Thanks  so much!
Best,
Amita

Hi John,
   Thanks so much.
    The order number is c0d0902040b2f050.
Best,
Amita

Hi,
  I had requested spatially subsetted MODIS data - but could not download it or extend the download deadline on time. Now the files are removed. Is there anyway I can request the data again? I am sorry about the inconvenience. 
Thanks.
Amita

Hello,    I am using modis_GEO.py  with L1A MODIS file to get a GEO file. For many files I get the following error:     Percent valid data (0.00) is less than threshold (95.00)     ERROR: MODIS geolocation processing failed.   I am trying to fin...