Search found 150 matches

by avmehta
Sat Feb 06, 2021 1:48 pm America/New_York
Forum: All Questions/Comments
Question: gpt MosaicGeneral
Replies: 21

gpt MosaicGeneral

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...
by avmehta
Sun Jan 31, 2021 9:06 am America/New_York
Forum: All Questions/Comments
Question: MODIS 250 m Rhos and Rrs
Replies: 2

MODIS 250 m Rhos and Rrs

Thank you so very much!
Amita
by avmehta
Sat Jan 30, 2021 6:54 pm America/New_York
Forum: All Questions/Comments
Question: MODIS 250 m Rhos and Rrs
Replies: 2

MODIS 250 m Rhos and Rrs

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...
by avmehta
Sat Jan 30, 2021 10:45 am America/New_York
Forum: All Questions/Comments
Question: MODIS 250m Processing and Composite Images
Replies: 1

MODIS 250m Processing and Composite Images

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....
by avmehta
Sun Dec 13, 2020 11:04 am America/New_York
Forum: All Questions/Comments
Question: Ancillary Data for MODIS
Replies: 2

Ancillary Data for MODIS

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>...
by avmehta
Wed Nov 25, 2020 12:17 pm America/New_York
Forum: All Questions/Comments
Question: MODIS Data download
Replies: 4

MODIS Data download

Hi John,
Thanks  so much!
Best,
Amita
by avmehta
Wed Nov 25, 2020 1:09 am America/New_York
Forum: All Questions/Comments
Question: MODIS Data download
Replies: 4

MODIS Data download

Hi John,
   Thanks so much.
    The order number is c0d0902040b2f050.
Best,
Amita
by avmehta
Tue Nov 24, 2020 4:19 pm America/New_York
Forum: All Questions/Comments
Question: MODIS Data download
Replies: 4

MODIS Data download

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
by avmehta
Wed Nov 04, 2020 2:35 pm America/New_York
Forum: All Questions/Comments
Question: MODIS GEO file
Replies: 13

MODIS GEO file

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...
by avmehta
Tue Oct 27, 2020 11:44 pm America/New_York
Forum: All Questions/Comments
Question: maskcloud
Replies: 2

maskcloud

Hello,     I am running l2gen to get L1 to L2 for OLCI images. I have set maskcloud=0 in my parameter file but where CLDICE mask is present I get all Rhos as NaN but just Rhos_940 has values! At certain locations Rhos_490 has negative values! Just when I think I have things somewhat f...