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VIIRS SNPP polar_wander.ascii update is broken

https://forum.earthdata.nasa.gov/viewtopic.php?t=7687

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VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 9:06 am America/New_York
by oo_processing
Dear Support,

I run SeaDAS update_luts very day, today's was broken. The polar_wander.ascii should be a formatted ASCII. But I just got "V2025.5/var/viirsn/polar_wander.ascii: HTML document, ASCII text, with very long lines". Its top lines are
<!DOCTYPE html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Earthdata is currently unavailable</title>
<meta name="description" content="Default HTML5 goodness for NASA EOSDIS sites">
<meta name="viewport" content="width=device-width">
<style type="text/css" media="screen">
html {
-webkit-font-smoothing: antialiased;
}
Please advise!

Thanks,
-Yuyuan

Re: VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 10:24 am America/New_York
by OB ODPS - towens
The server where we retrieve the polar wander data was serving out HTML error files yesterday. It was fixed later in the day.
Can you run the command with -d and see what location it is pulling the files from? It looks to be caching the bad file.

Tommy

Re: VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 12:19 pm America/New_York
by oo_processing
Hi Tommy,

The debug output was
Downloading files into /V2025.5/var/viirsn
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /Ancillary/LUTs/viirsn/?format=json HTTP/1.1" 302 None
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /directdataaccess/Ancillary/LUTs/viirsn/?format=json HTTP/1.1" 200 213
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /Ancillary/LUTs/viirsn/polar_wander.ascii HTTP/1.1" 302 None
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /directdataaccess/Ancillary/LUTs/viirsn/polar_wander.ascii HTTP/1.1" 200 95234
Downloading polar_wander.ascii ( 0.09 MBs)
[==================================================]
...Done
+ polar_wander.ascii
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /Ancillary/LUTs/viirsn/?format=json HTTP/1.1" 302 None
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /directdataaccess/Ancillary/LUTs/viirsn/?format=json HTTP/1.1" 200 213
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /Ancillary/LUTs/viirsn/polar_wander.ascii HTTP/1.1" 302 None
DEBUG:https://oceandata.sci.gsfc.nasa.gov:443 "GET /directdataaccess/Ancillary/LUTs/viirsn/polar_wander.ascii HTTP/1.1" 200 95234
Downloading polar_wander.ascii ( 0.09 MBs)
[==================================================]
...Done
+ polar_wander.ascii
-Yuyuan

Re: VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 1:28 pm America/New_York
by OB ODPS - towens
I notified the web admins about the cached invalid file.
If they don't get it cleared today, it will be replaced with a good copy overnight.

Tommy

Re: VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 1:29 pm America/New_York
by OB ODPS - towens
I notified the web admins about the cached invalid file.
If they don't get it cleared today, it will be replaced with a good copy overnight.

Tommy

Re: VIIRS SNPP polar_wander.ascii update is broken

Posted: Fri Feb 27, 2026 2:52 pm America/New_York
by oo_processing
Thank you! It works.

Have a good weekend.
-Yuyuan
All times are UTC-05:00
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