I'm not sure what you are asking here. Are you referring to these flags?
https://oceancolor.gsfc.nasa.gov/atbd/ocl2flags/
Those flag values are either on or off, making a difference computation somewhat meaningless.
Regards,
Norman
Search found 141 matches
- Mon Nov 30, 2020 8:47 am America/New_York
- Forum: Questions/Comments
- Question: MODIS AQUA Quality Flags
- Replies: 8
- Mon Nov 30, 2020 8:42 am America/New_York
- Forum: Questions/Comments
- Question: MODIS AQUA SST Daytime Data
- Replies: 2
MODIS AQUA SST Daytime Data
In general, you should prefer the more recently produced data. Products are initially generated as "quicklook" files. These are regenerated once we have received all the ancillary data needed to produce our "refined" products. We also reprocess our data sets fro...
- Wed Sep 16, 2020 9:22 am America/New_York
- Forum: Questions/Comments
- Question: Cloud Masking
- Replies: 3
Cloud Masking
Hi Amita,I will leave it to the SeaDAS experts to answer the SeaDAS related questions.After using l2gen to generate rhos_8xx products, I usually map the data to a 16-bit imageand then use Gimp Colors->Levels... to interactively choose a threshold that separatesland and clouds from water. The t...
- Fri Sep 11, 2020 11:36 am America/New_York
- Forum: Questions/Comments
- Question: Data processing
- Replies: 4
Data processing
You can generate a list of URLs for files to download by using our L1 browser.Specify your region and time period of interest, click "Find swaths", and then click "ORDER DATA" and follow the instructions. You can get more information by clicking on the "Help" butt...
- Fri Sep 11, 2020 9:54 am America/New_York
- Forum: Questions/Comments
- Question: Data processing
- Replies: 4
Data processing
You have left out key portions of your script, but here is a method that works for me to download Aqua/MODIS L1 files for the month of January 2020.for f in `wget -q --post-data="sensor=aqua&sdate=2020-01-01&edate=2020-01-31&dtype=L1&results_as_file=1&addurl=1&std_only=1...
- Wed Aug 26, 2020 5:21 pm America/New_York
- Forum: Questions/Comments
- Question: OLI L2 data
- Replies: 6
OLI L2 data
Hi Amita,
There is a tool at the bottom of this page that might help you understand the l2_flags.
https://oceancolor.gsfc.nasa.gov/atbd/ocl2flags/
Try entering 2112 in the field at the bottom right.
Regards,
Norman
There is a tool at the bottom of this page that might help you understand the l2_flags.
https://oceancolor.gsfc.nasa.gov/atbd/ocl2flags/
Try entering 2112 in the field at the bottom right.
Regards,
Norman
- Thu Aug 20, 2020 4:05 pm America/New_York
- Forum: Questions/Comments
- Question: L2gen processing speed
- Replies: 8
- Tue Jul 21, 2020 9:00 am America/New_York
- Forum: Questions/Comments
- Question: VIIRS-JPSS1 OCSSW commands L1A to L2
- Replies: 4
VIIRS-JPSS1 OCSSW commands L1A to L2
"...don't forget to include par=V2020099121800.L1A_JPSS1.nc.anc ...without that, you've pulled the ancillary files but didn't tell l2gen to use them"
Huh. I've been doing it wrong for a couple of years now.
Thanks for the heads up.
Norman
Huh. I've been doing it wrong for a couple of years now.
Thanks for the heads up.
Norman
- Tue Jul 21, 2020 8:48 am America/New_York
- Forum: Questions/Comments
- Question: VIIRS-JPSS1 OCSSW commands L1A to L2
- Replies: 4
VIIRS-JPSS1 OCSSW commands L1A to L2
Hi Andrew,Make sure you have the VIIRSJ1 bundle installed (install_ocssw.py --viirsj1) and thendo something like the following.getanc.py V2020099121800.L1A_JPSS1.ncl2gen ifile=V2020099121800.L1A_JPSS1.nc geofile=V2020099121800.GEO-M_JPSS1.nc ofile=V2020099121800.L2.nc l2prod=rhos_445,rhos_556,rhos_6...
- Fri Jul 17, 2020 8:46 am America/New_York
- Forum: Questions/Comments
- Question: Damaged MODISA L2 file
- Replies: 1
Damaged MODISA L2 file
Hi Marco,
That scene and the one before it and the one after it are corrupt (perhaps during
transmission to the ground station). Sometimes we get better data later from
our providers.
Norman
That scene and the one before it and the one after it are corrupt (perhaps during
transmission to the ground station). Sometimes we get better data later from
our providers.
Norman