Search found 140 matches

by OB WebDev - norman
Wed Mar 09, 2022 5:17 pm America/New_York
Forum: Questions/Comments
Question: Landsat OLI processing
Replies: 6

Re: Landsat OLI processing

I'm guessing this may have to do with the fact that l2gen cannot process Landsat Collection 2 data yet.
by OB WebDev - norman
Mon Mar 07, 2022 4:17 pm America/New_York
Forum: Questions/Comments
Question: l2gen failing while loading user parameters for VIIRSJ1
Replies: 3

Re: l2gen failing while loading user parameters for VIIRSJ1

Thank you Bing. That seems to be working. I figured I was doing something silly. Interestingly, I had the command line coded that way in a script I use. Perhaps I inadvertently chopped out the "file" portion of "parfile" the last time I edited the script. I hope you are well. Tha...
by OB WebDev - norman
Mon Mar 07, 2022 2:19 pm America/New_York
Forum: Questions/Comments
Question: l2gen failing while loading user parameters for VIIRSJ1
Replies: 3

l2gen failing while loading user parameters for VIIRSJ1

Hi folks, I'm probably doing something stupid here, but I'm pretty sure this command sequence has worked for me in the past. I have these input files. $ ls -l V* -rw-rw-r-- 1 norman norman 45683223 Feb 20 10:43 V2022051083600.GEO-M_JPSS1.nc -rw-rw-r-- 1 norman norman 464234144 Feb 20 10:35 V20220510...
by OB WebDev - norman
Tue Feb 22, 2022 1:01 pm America/New_York
Forum: Questions/Comments
Question: Landsat-8-9 collection 2 L1 data processing in SeaDAS
Replies: 4

Re: Landsat-8-9 collection 2 L1 data processing in SeaDAS

I understand that ocean color missions take precedence over Landsat, but I would also like to express my interest in Landsat-Collection-2 processing capabilities with l2gen. :-)
by OB WebDev - norman
Sat Jan 29, 2022 10:31 pm America/New_York
Forum: Questions/Comments
Question: install_ocssw script can't find OCSSW_bash.env
Replies: 4

Re: install_ocssw script can't find OCSSW_bash.env

Hi Sean,

That worked like a charm.

I'm guessing you are still at the top of the leaderboard of forum responses. I'm sorry to add to your load, but I very much appreciate the help.

I hope all is going well in the OBPG.

Norman
by OB WebDev - norman
Thu Jan 27, 2022 4:53 pm America/New_York
Forum: Questions/Comments
Question: install_ocssw script can't find OCSSW_bash.env
Replies: 4

install_ocssw script can't find OCSSW_bash.env

Hello my friends in the OBPG, I just decided to reinstall the OCSSW software from scratch on my Ubuntu 20.04.3 machine to pick up all of the latest goodies (in particular, I would like to start processing Landsat 8 and 9 Collection 2 data), but I ran into a problem. The install script rolled merrily...
by OB WebDev - norman
Thu Apr 08, 2021 3:12 pm America/New_York
Forum: Questions/Comments
Question: MODIS 250m Processing and Composite Images
Replies: 1

Re: MODIS 250m Processing and Composite Images

Hi Amita, I have found that rhos can differ substantially from one day to the next largely because of sun angle and scan angle effects. You can get a sense of this by viewing a what are essentially rhos-based images in Worldview. Here is a comparison of the Chesapeake Bay as seen by Aqua/MODIS on Ja...
by OB WebDev - norman
Wed Feb 17, 2021 12:53 pm America/New_York
Forum: Questions/Comments
Question: Exporting Pixel Info
Replies: 1

Exporting Pixel Info

Please start a new thread when asking a new question.

Follow the instructions here.
https://seadas.gsfc.nasa.gov/downloads/
If you run into trouble, then post (in a new thread with a descriptive subject line) specifics about the problem you are having.

Regards,
Norman
by OB WebDev - norman
Tue Jan 12, 2021 12:03 pm America/New_York
Forum: Questions/Comments
Question: About Aqua bands
Replies: 1

About Aqua bands

Those stripes are a result of imperfect MODIS detector calibrations.  They tend to be most pronounced in areas of sun glint.  I have had success in reducing the striping by Fourier transforming the image and masking out the unwanted features in frequency space, but I am only making pretty ...
by OB WebDev - norman
Mon Nov 30, 2020 8:47 am America/New_York
Forum: Questions/Comments
Question: MODIS AQUA Quality Flags
Replies: 8

MODIS AQUA Quality Flags

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