Sentinel-3A GetANC Problem

Use this Forum to find information on, or ask a question about, NASA Earth Science data.
Post Reply
mercury_1106
Posts: 4
Joined: Mon Mar 27, 2023 4:32 am America/New_York
Answers: 0

Sentinel-3A GetANC Problem

by mercury_1106 » Sun May 17, 2026 2:31 am America/New_York

When I use OCSSW to invert Sentinel-3A L1B files to L2, I find that the results of using the `getanc` command are always:
OBPG session started
Downloading xfdumanifest.anc.server ( 0.00 MBs)
[==================================================]
...Done
*** WARNING: No optimal MET files found.
*** WARNING: No optimal OZONE files found.
*** WARNING: No optimal SST files found.
*** WARNING: No optimal ICE files found.
When I use the SeaDAS GUI and click the “Get Anc” button directly, there is no response. As a result, the Chla coverage in the L2 product I inverted is significantly lower than that of the official L2 product downloaded directly. I’ve seen others on the forum reporting issues with `getanc`. I’d like to ask: is this a problem with our code usage, or is it a common issue with the `getanc` system? If it is a code usage issue, how can we correctly obtain the relevant files and use them for processing?

Filters:

OB.DAAC - amscott
User Services
User Services
Posts: 63
Joined: Thu Dec 12, 2024 8:45 am America/New_York
Answers: 0
Endorsed: 5 times

Re: Sentinel-3A GetANC Problem

by OB.DAAC - amscott » Wed May 20, 2026 3:42 pm America/New_York

This is being investigated. Please watch this thread (7754) for a solution. It appears it's a problem with the code not the GUI.

In the meantime, running getanc with the starttime option should work to get you the expected results.

Post Reply