Search found 15 matches

by 3sunanda.m
Tue Apr 16, 2019 1:22 am America/New_York
Forum: Questions/Comments
Question: Negative sprectral values of processed MODIS L0/L1A data
Replies: 4

Negative sprectral values of processed MODIS L0/L1A data

Thank you for reverting. I have attached the screenshots of the images and spectral values (in the first post of this issue) where I was facing the issue, though I received positive X & Y pixel values in Seadas. I imported the .hdf5 files in ENVI and was checking the spectral values which were e...
by 3sunanda.m
Wed Apr 10, 2019 3:43 am America/New_York
Forum: Questions/Comments
Question: Negative sprectral values of processed MODIS L0/L1A data
Replies: 4

Negative sprectral values of processed MODIS L0/L1A data

Dear AllI have processed Modis L0 to L2 in Seadas 7.5.1. I had to work with Lw & nLw bands so I opted for these two in the Products tab of the l2gen dialog box while processing. I exported the final reprojected file (L2) into .hdf5 format so that I can use the same data in other platforms. But w...
by 3sunanda.m
Sat Jan 05, 2019 11:57 pm America/New_York
Forum: Questions/Comments
Question: how to derive reflectance values for all the bands in MODIS
Replies: 2

how to derive reflectance values for all the bands in MODIS

Dear LachlanThank you for reverting. Below I have mentioned the details regarding the type of data I used:(1) MODIS - Aqua, 2008358095000_L1A_LAC, 23-Dec-2008, Persian Gulf. (I processed this data in Seadas using MODIS_GEO > MODIS_L1B > l2gen tool). Below is the attached screenshot of RGB compositio...
by 3sunanda.m
Thu Dec 27, 2018 3:38 am America/New_York
Forum: Questions/Comments
Question: how to derive reflectance values for all the bands in MODIS
Replies: 2

how to derive reflectance values for all the bands in MODIS

Dear AllI have processed L1A modis data and extracted Rrs, nLw, Lw bands in Seadas. But now, if I look for spectral signature of reflectance bands using this product it is not the same as normal L2 reflectance data. For few bands there isn't any values for spectral signature. Even the RGB compos...
by 3sunanda.m
Thu Dec 20, 2018 12:08 am America/New_York
Forum: Questions/Comments
Question: Geo files missing for L1A
Replies: 7

Geo files missing for L1A

Ok. Thank you. The problem with GEO files which I was facing was that the files would work only if accessed through Downloads folder path, I was creating a separate folder for separate files in order to avoid confusion. So now my question is there any option to create a separate workspace for the sa...
by 3sunanda.m
Thu Dec 20, 2018 12:04 am America/New_York
Forum: Questions/Comments
Question: String index out of range -1 error in Seadas
Replies: 6

String index out of range -1 error in Seadas

This is informative. Hope this would work. Thank you for the constant support.
by 3sunanda.m
Wed Dec 19, 2018 12:50 am America/New_York
Forum: Questions/Comments
Question: Geo files missing for L1A
Replies: 7

Geo files missing for L1A

Dear Sean Thank you for replying. If I want to download data from the following website {{//oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/L1/2008/358/}}  how can I understand from the file name which is of Persian Gulf. Kindly revert.RegardsSunanda
by 3sunanda.m
Tue Dec 18, 2018 1:38 pm America/New_York
Forum: Questions/Comments
Question: Geo files missing for L1A
Replies: 7

Geo files missing for L1A

Dear NormanThank you for reverting. I tried OCSSW>MODIS_GEO tool for GEO files but when we enter L1A_LAC file as a input file the output file automatically is named similar to the original file name with extension .GEO, then only the Run button gets activated.  So even if I am specifying a sepa...
by 3sunanda.m
Tue Dec 18, 2018 3:00 am America/New_York
Forum: Questions/Comments
Question: Geo files missing for L1A
Replies: 7

Geo files missing for L1A

Dear All

I have downloaded L1A (MODIS Aqua, True Color, 19 Jan 2018 & Nov 2015, Persian Gulf)file and when I tried for processing it to L1B>L2, geo files are missing so the  process couldn't be executed. Kindly provide necessary solution. 

Regards
Sunanda
by 3sunanda.m
Mon Dec 17, 2018 12:30 am America/New_York
Forum: Questions/Comments
Question: MODIS level 0 data packets empty - need alternative approach to download
Replies: 1

MODIS level 0 data packets empty - need alternative approach to download

Dear AllI tried to download modis level 0 (MYD00F and MOD00) from Earthdata and Oceancolor respectively for the Arabian gulf region. I downloaded this particular file MOD00.P2008358.0950_1.PDS.bz2  (from Ocean Color website) considering that 9:50am is the crossing time for the satellite over Ar...