Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

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jiangbei1995
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Joined: Wed Mar 30, 2022 9:11 pm America/New_York

Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by jiangbei1995 » Wed Mar 30, 2022 9:23 pm America/New_York

I registered an account and used the following command to download the OMNO2d data:
wget --load-cookies F:\wgetNO2\.urs_cookies --save-cookies F:\wgetNO2\.urs_cookies --auth-no-challenge=on --keep-session-cookies --user=jiangbei1995 --ask- password -i F:\wgetNO2\subset_OMNO2d_003_20220330_125228.txt

However,'ERROR 404: OMI-Aura_L3-OMNO2d_2010m0812_v003-2019m1122t014146.he5.SUB.nc4 not available for download' appeared.

How can I get these data?

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GES DISC - jimacker
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Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by GES DISC - jimacker » Thu Mar 31, 2022 10:56 am America/New_York

Hello,

We will investigate your question and determine the availability of the data file.

jiangbei1995
Posts: 4
Joined: Wed Mar 30, 2022 9:11 pm America/New_York

Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by jiangbei1995 » Thu Mar 31, 2022 11:25 pm America/New_York

Thank you very much!

However,these data are still not available, and the message "Sorry, OMI-Aura_L3-OMNO2d_2010m0701_v003-2019m1122t010352.he5.SUB.nc4 is not available for downloading" appears.

I don't know where the problem is. Looking forward to your reply!

jiangbei1995
Posts: 4
Joined: Wed Mar 30, 2022 9:11 pm America/New_York

Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by jiangbei1995 » Thu Mar 31, 2022 11:30 pm America/New_York

GES DISC - jimacker wrote:
> Hello,
>
> We will investigate your question and determine the availability of the
> data file.
Dear jimacker,
Thank you very much!

However,these data are still not available, and the message "Sorry, OMI-Aura_L3-OMNO2d_2010m0701_v003-2019m1122t010352.he5.SUB.nc4 is not available for downloading" appears.

I don't know where the problem is. Looking forward to your reply!

GES DISC - jimacker
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Posts: 185
Joined: Mon Sep 30, 2019 1:57 pm America/New_York
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Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by GES DISC - jimacker » Fri Apr 01, 2022 3:14 pm America/New_York

Hello,

We have determined that the file should be available.

There is a potential problem that we have seen before with some users. If you have copied and pasted the content of URLs into subset_OMNO2d_003_20220330_125228.txt, and have "broken" lines where the filename OMI-Aura_L3-OMNO2d_2010m0812_v003-2019m1122t014146.he5.SUB.nc4 on a single line instead of entire URL, this can result in a "file not found" error.

Longer explanation:

If you use the interface and order the subset of OMNO2d through OPeNDAP you would get :

Data File Links for OMI/Aura NO2 Cloud-Screened Total and Tropospheric Column L3 Global Gridded 0.25 degree x 0.25 degree V3

Results (found 5 links in range from 2010-08-10 to 2010-08-12):
Download links list (This list is valid for 2 days) | Instructions for downloading
• README Document
• OMI Data User's Guide
• OMI-Aura_L3-OMNO2d_2010m0810_v003-2019m1122t013952.he5.nc4
• OMI-Aura_L3-OMNO2d_2010m0811_v003-2019m1122t020149.he5.nc4
• OMI-Aura_L3-OMNO2d_2010m0812_v003-2019m1122t014146.he5.nc4

If you copy and paste the list above instead of clicking on the Download links list, then you will get a list of files that do not exist.

Please check on this possibility and determine if you can access the file; if not we will continue to assist on this issue.

jiangbei1995
Posts: 4
Joined: Wed Mar 30, 2022 9:11 pm America/New_York

Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by jiangbei1995 » Fri Apr 01, 2022 9:55 pm America/New_York

GES DISC - jimacker wrote:
> Hello,
>
> We have determined that the file should be available.
>
> There is a potential problem that we have seen before with some users. If
> you have copied and pasted the content of URLs into
> subset_OMNO2d_003_20220330_125228.txt, and have "broken" lines
> where the filename
> OMI-Aura_L3-OMNO2d_2010m0812_v003-2019m1122t014146.he5.SUB.nc4 on a single
> line instead of entire URL, this can result in a "file not found"
> error.
>
> Longer explanation:
>
> If you use the interface and order the subset of OMNO2d through OPeNDAP you
> would get :
>
> Data File Links for OMI/Aura NO2 Cloud-Screened Total and Tropospheric
> Column L3 Global Gridded 0.25 degree x 0.25 degree V3
>
> Results (found 5 links in range from 2010-08-10 to 2010-08-12):
> Download links list (This list is valid for 2 days) | Instructions for
> downloading
> • README Document
> • OMI Data User's Guide
> • OMI-Aura_L3-OMNO2d_2010m0810_v003-2019m1122t013952.he5.nc4
> • OMI-Aura_L3-OMNO2d_2010m0811_v003-2019m1122t020149.he5.nc4
> • OMI-Aura_L3-OMNO2d_2010m0812_v003-2019m1122t014146.he5.nc4
>
> If you copy and paste the list above instead of clicking on the Download
> links list, then you will get a list of files that do not exist.
>
> Please check on this possibility and determine if you can access the file;
> if not we will continue to assist on this issue.

Thank you very much! I downloaded the full link txt before and there is no "broken" lines.

I did the same operation again just now, and found that there was no error. Although I don't know where the previous problem is, I can download it now, thank you very much for your patient answer!
good luck!
Bei

GES DISC - jimacker
User Services
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Posts: 185
Joined: Mon Sep 30, 2019 1:57 pm America/New_York
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Re: Why do I get the error 'ERROR 404: OMI-Aura_L3-OMNO2d*.nc4 not available for download' when I download OMNO2d?

by GES DISC - jimacker » Fri Apr 01, 2022 11:23 pm America/New_York

Thank you for informing us, and we are glad to hear it worked for you.

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