Search found 32 matches

by schckngs
Mon Apr 13, 2026 6:35 pm America/New_York
Forum: Home
Question: l2gen MODIS Aqua segmentation fault with N, S, E, W bounds
Replies: 2

Re: l2gen MODIS Aqua segmentation fault with N, S, E, W bounds

Hi Jakob,
Thank you! I will keep an eye out for that. I still have issues with the N,S,E,W box location (without segmentation fault) if I try using earlier ocssw versions (e.g. V2022.0). Should this be something I can get around in the meantime by downgrading to an earlier version?
Thanks,
-Andrea
by schckngs
Thu Mar 26, 2026 3:10 pm America/New_York
Forum: Home
Question: l2gen MODIS Aqua segmentation fault with N, S, E, W bounds
Replies: 2

l2gen MODIS Aqua segmentation fault with N, S, E, W bounds

Hi Seadas friends, I recently updated seadas and am attempting to run l2gen on some MODIS Aqua files from 2024. L2gen produces a Segmentation fault when using the north=, south=, east=, west= options, similar to this post: https://forum.earthdata.nasa.gov/viewtopic.php?t=2619 I tried following the l...
by schckngs
Tue Apr 16, 2024 1:48 pm America/New_York
Forum: Home
Question: Gradients removed in MODISA night SST
Replies: 1

Gradients removed in MODISA night SST

Hello ocean colour folks, I have been making 1 km SST layers by downloading night-time MODIS-Aqua L2 SST images, and binning / mapping into composites with SeaDAS. However the non-uniformity flags result in valid pixels along SST fronts and gradients being removed. This removes quite a lot of data i...
by schckngs
Mon Oct 31, 2022 5:05 pm America/New_York
Forum: Home
Question: Removing high chlor_a before binning
Replies: 4

Re: Removing high chlor_a before binning

Hey Sean,

Thanks for your answer! I'll adjust the CHLWARN flag for future. I agree this would be a super useful feature esp at the L2/L3 binning stage for a variety of products.

Cheers, happy halloween 8-) ,
-A
by schckngs
Mon Oct 31, 2022 2:28 pm America/New_York
Forum: Home
Question: Removing high chlor_a before binning
Replies: 4

Re: Removing high chlor_a before binning

Hey gnwiii, As I understand you're saying that a threshold is maybe a bit too simplistic a way to remove values. In this case I'm using regular flagging but even so in my region of interest (BC coast), at 1 km resolution many pixels on the continental shelf in the chlor_a product are very high (> 60...
by schckngs
Fri Oct 28, 2022 2:29 pm America/New_York
Forum: Home
Question: Removing high chlor_a before binning
Replies: 4

Removing high chlor_a before binning

Hey forum, Apologies if there is an obvious answer. Is there a simple way to remove high chlorophyll-a values before they are included in binned images and composites? I am making daily, 8day and monthly chlor_a composites at 1km resolution using L2Bin > L3Bin > L3Map on downloaded and reprocessed L...
by schckngs
Tue Aug 30, 2022 12:29 pm America/New_York
Forum: Home
Question: MODIS Aqua reprocessing status 2022
Replies: 4

Re: MODIS Aqua reprocessing status 2022

Okay, thanks for the clarification Sean! Definitely did not realize the change in bounding box search system.
Cheers
by schckngs
Fri Aug 12, 2022 5:35 pm America/New_York
Forum: Home
Question: MODIS Aqua reprocessing status 2022
Replies: 4

Re: MODIS Aqua reprocessing status 2022

I'll just tack onto this question to ask if the CMR Search website has an estimated date it will sync with the oceancolour site? For MODIS-Aqua both R2018 and R2022 Level-2 files are there, but a number of files from the R2022 processing are still missing. Attached is an image of the 2003 R2018 L2 f...
by schckngs
Tue Jun 01, 2021 4:41 pm America/New_York
Forum: Home
Question: L2gen error with 3x3 straylight masking
Replies: 4

Re: L2gen error with 3x3 straylight masking

Thanks Sean, for next time I'll make sure SeaDAS is updated first....

I wonder if the working / not working has something to do with spatial coverage in the bands used. Regardless, thanks for looking. Cheers

-Andrea
by schckngs
Tue Jun 01, 2021 3:01 pm America/New_York
Forum: Home
Question: L2gen error with 3x3 straylight masking
Replies: 4

Re: L2gen error with 3x3 straylight masking

Hey Sean, Thanks for looking. Yeah, that file does produce a GEO file with a "1"...lots of those in 2006/2007. I re-checked and this file still fails for me with 3x3 but passes with 7x5 (accting for the "1" in the GEO file :) ). With 3x3: Loading SSES table from /home/hilborna/oc...