Search found 1446 matches

by OB.DAAC - SeanBailey
Mon Feb 05, 2024 1:45 pm America/New_York
Forum: Questions/Comments
Question: failed in getanc for modis data
Replies: 3

Re: failed in getanc for modis data

I was too quick with that 'fix'. It fixed getanc, but breaks modis_GEO and modis_L1B :o
My "fix" has been fixed ;) The correct fix will be in the next OCSSW tag.

Sean
by OB.DAAC - SeanBailey
Sat Feb 03, 2024 11:08 am America/New_York
Forum: Questions/Comments
Question: failed in getanc for modis data
Replies: 3

Re: failed in getanc for modis data

Seems there is a bug with the use of the -c,--curdir option. One I apparently introduced almost 3 years ago :shock: I'm very surprised this is the first report. The good news is the solution is simple. The first option is a workaround. Don't use -c. Just let the code put the files in the default loc...
by OB.DAAC - SeanBailey
Fri Feb 02, 2024 1:17 pm America/New_York
Forum: Questions/Comments
Question: Inability to Download OB.DAAC Data with obdaac_download.py
Replies: 6

Re: Inability to Download OB.DAAC Data with obdaac_download.py

Eric, I verified the script on Windows10. I was able to retrieve the file you report as an example (obviously I used my own appkey). The error you're seeing suggests a problem with the connection - the script is trying to connect, but cannot. Odd that you can get the file from the browser, but not t...
by OB.DAAC - SeanBailey
Fri Feb 02, 2024 10:33 am America/New_York
Forum: Questions/Comments
Question: Has data changed recently?
Replies: 4

Re: Has data changed recently?

The PAR algorithm is only valid over ice-free waters. The R2022 reprocessing saw a number of changes to the ancillary inputs we use, one of these was the sea ice fraction. While the R2018 may have had some retrievals in your region of interest, they were likely not accurate. In the Hudson Bay, sea i...
by OB.DAAC - SeanBailey
Thu Feb 01, 2024 1:52 pm America/New_York
Forum: Questions/Comments
Question: how to run l2gen for PRISM?
Replies: 5

Re: how to run l2gen for PRISM?

The answer is simple....l2gen supports (in the loosest sense) PRISM in ENVI format, not the special netCDF4 format created for the CORAL program. Though this did highlight the fact that the metadata in the L1B files is amiss...we'll look at correcting that :D For context, support for the ENVI format...
by OB.DAAC - SeanBailey
Sat Jan 27, 2024 2:55 pm America/New_York
Forum: Questions/Comments
Question: How are gains mentioned in SeaHawk L2 metadata calculated?
Replies: 2

Re: How are gains mentioned in SeaHawk L2 metadata calculated?

Yes, the Franz et al., 2007 approach was used, but with limited coverage over MOBY, the ocean reflectance model of Werdell et al., 2007 was necessary. Several clear ocean scenes were used.

Sean
by OB.DAAC - SeanBailey
Fri Jan 19, 2024 2:22 pm America/New_York
Forum: Questions/Comments
Question: Scaling and Offset: S3A/B, VIIRS
Replies: 1

Re: Scaling and Offset: S3A/B, VIIRS

The answer depends upon the netCDF reader client (for example, SeaDAS does, as does the python netCDF4 API). Most should apply them, so you wouldn't need to do so manually. If you're finding the values don't seem geophysically reasonable, it is likely the scale_factor and add_offset were not applied...
by OB.DAAC - SeanBailey
Thu Jan 18, 2024 8:31 am America/New_York
Forum: Questions/Comments
Question: A Couple More Questions on PACE Processing
Replies: 1

Re: A Couple More Questions on PACE Processing

The ocean color products from PACE OCI will be generated from L1B. There isn't a PACE land surface reflectance product...yet ...notice the TBDs under the land section of https://pace.oceansciences.org/data_table.htm ;) We are exploring options, though, one of which is the current rhos (Rayleigh corr...
by OB.DAAC - SeanBailey
Sat Jan 13, 2024 9:44 am America/New_York
Forum: Questions/Comments
Question: GLIBC problem is back... [CentOS 7 RIP]
Replies: 4

Re: GLIBC problem is back... [CentOS 7 RIP]

CentOS7 had a good run. The error message you saw was from the wrapper "BuildIt.py" script. You can build the hdf4 by itself and see what the actually complaint (navigate to opt/src/hdf4 and run it's BuildIt script). It is likely resolvable (but without access to a CentOS7 machine, I'm afr...
by OB.DAAC - SeanBailey
Thu Jan 11, 2024 9:07 am America/New_York
Forum: Questions/Comments
Question: GLIBC problem is back... [CentOS 7 RIP]
Replies: 4

Re: GLIBC problem is back...

CentOS7 is end of life in June. We no longer have (or are allowed to have) a CentOS7 machine, the "oldest" we have is RHEL8 (which is what V2023.3 was compiled on). Since it still works for you, you can continue to use V2023.2 or look to upgrade your server to an OS with a longer support c...