Search found 10 matches

by juancho.gossn
Fri Feb 02, 2024 10:22 am America/New_York
Forum: Questions/Comments
Question: Python API to search, slice and download VIIRS (or MODIS or ...) L2 OC data by query bounding_box and timestamp?
Replies: 1

Python API to search, slice and download VIIRS (or MODIS or ...) L2 OC data by query bounding_box and timestamp?

Dear NASA colleagues, I have been looking at the /https://github.com/nsidc/earthaccess module hoping that it would fit the purpose. I used the following commands to retrieve data from SeaHawk's dataset (https://catalog.data.gov/dataset/seahawk-hawkeye-regional-ocean-color-oc-data-version-2018-0-b9ff...
by juancho.gossn
Wed May 13, 2020 9:37 am America/New_York
Forum: Questions/Comments
Question: White aerosol extrapolation (aer_opt=0) yields higher Rrs than no aerosol (aer_opt=-99)
Replies: 5

White aerosol extrapolation (aer_opt=0) yields higher Rrs than no aerosol (aer_opt=-99)

Thank you Sean! Hope the bug can be squashed easily. For the moment I won't be testing these options, then.

Regards, Juan
by juancho.gossn
Fri May 08, 2020 6:08 pm America/New_York
Forum: Questions/Comments
Question: White aerosol extrapolation (aer_opt=0) yields higher Rrs than no aerosol (aer_opt=-99)
Replies: 5

White aerosol extrapolation (aer_opt=0) yields higher Rrs than no aerosol (aer_opt=-99)

Hi!I have been checking different SeaDAS atmospheric corrections in Rio de la Plata in multiple images and am consistently seeing higher Rrs values from white aerosol extrapolation (aer_opt=0, having set far SWIR band ~2200 nm as extrapolation band) than the correspondent Rrs values retrieved in the...
by juancho.gossn
Mon Sep 02, 2019 11:00 am America/New_York
Forum: Questions/Comments
Question: Error! Cannot find GEO file None.
Replies: 3

Error! Cannot find GEO file None.

Thanks!! It was solved after I re-ran the install_ocssw.py script.Regarding the fact that the l2 files weren't generated, this had to do with an error I hadn't had before when running l2gen:/path_to_seadas/bin/l2gen: libgfortran.so.3: cannot open shared object file: No such file or directory...
by juancho.gossn
Tue Aug 27, 2019 8:28 am America/New_York
Forum: Questions/Comments
Question: Error! Cannot find GEO file None.
Replies: 3

Error! Cannot find GEO file None.

Dear SeaDAS support team,I am using multilevel_processor.py to process a set of Aqua images which worked till yesterday. I really don't know what exactly happened, but know I'm getting "Error! Cannot find GEO file None." each time the multilevel_processor script reaches the l1b pro...
by juancho.gossn
Mon Nov 27, 2017 6:52 am America/New_York
Forum: Questions/Comments
Question: OLCI Vicarious Calibration Coefficients
Replies: 14

OLCI Vicarious Calibration Coefficients

OK, thanks. This means I'll have to wait till the transition period ends? Or is there something I can update/change for it to work?
I've retried today and it still throws the same error.

Thanks!
by juancho.gossn
Fri Nov 24, 2017 8:43 am America/New_York
Forum: Questions/Comments
Question: OLCI Vicarious Calibration Coefficients
Replies: 14

OLCI Vicarious Calibration Coefficients

Thanks Sean!I'm now encountering an error I hadn't had before, while processing rhos from OLCI L1B imagery:-E- /home/swtest/ocssw/src/l2gen/smile.c:89: unable to open /home/juancho/seadas-7.4/ocssw/share/olci/cal/band_info_olci.txt for readingl2genOlciProcess: 28: l2genOlciProcess: Syntax er...
by juancho.gossn
Tue Nov 14, 2017 3:02 pm America/New_York
Forum: Questions/Comments
Question: OLCI Vicarious Calibration Coefficients
Replies: 14

OLCI Vicarious Calibration Coefficients

Hi,I'm processing OLCI L1B data to obtain Rayleigh-corrected reflectance (via l2prod=rhos_nnn). My question is: are the vicarious calibration gains reported at https://www.eumetsat.int applied to the TOA OLCI radiances with SeaDAS? If not, what would be the best way to apply them using SeaDas?Thanks...
by juancho.gossn
Fri Aug 04, 2017 10:00 am America/New_York
Forum: Questions/Comments
Question: Using l2gen for VIIRS scene: numElemens is less than one
Replies: 1

Using l2gen for VIIRS scene: numElemens is less than one

Hi there,I'm for the first time trying to process a VIIRS scene (I'm using GUI for the moment). I've went through L1A + GEO -> L1B (already added the correct "terrain_path" and the "dem" folder); but now I'm stack with L2GEN, which gives me back "execution ex...