Earthdata Forum

Dear Earthdata forum.

I am trying to retrieve the TEMPO O3, NO2 and HCHO products from Earthdata https://data.asdc.earthdata.nasa.gov/asdc-prod-protected/TEMPO/. I used the script provided by Earthdata and I can download individual files for initial tests.

To implement the retrieval of TEMPO products operationally, we would need to set up our in house acquisition system, which behaves similarly to wget.

I tried this wget

wget -d --user=my_user --password=my_passwd -r --load-cookies cookies.txt -A "*.nc" https://data.asdc.earthdata.nasa.gov/asdc-prod-protected/TEMPO/TEMPO_NO2_L2_V03/YYYY.MM.DD/

To retrieve the listing of files for a particular day but I get a 404 error.

I am aware there is a python package

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fpodaac%2Fdata-subscriber&data=05%7C02%7Croberto.ribas%40ecmwf.int%7Cbac38a6bf80845f659be08dd4aa98770%7C21b711c6aab74d369ffbac0357bc20ba%7C1%7C0%7C638748814205818826%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Y3n5H%2BY0QROCEucvUIIzIovnVY8n7ucbSzB5y7ib45E%3D&reserved=0

but unfortunately our in house system does not support python.

I am using Linux with wget version

wget -V
GNU Wget 1.19.5 built on linux-gnu.

I am also aware there is a opendap access to the files however, to use opendap, we would need to adapt our in-house system and this will take time. That is why our preferred solution would be to know how to use wget to get the listing of the files inside each YYYY.MM.DD directory. Once we know that we can use our existing system to retrieve the files.
our Linux system is

Description: Red Hat Enterprise Linux release 8.8 (Ootpa)


Could you please provide some insight and guidance on how to configure wget to access the YYYY.MM.DD directories and do the listings of these directories.

Thank you very much in advance
best regards
Roberto Ribas

Hi Roberto,

The guidance you need could be on this previous Forum post on how to use wget.

viewtopic.php?t=2329

I hope this helps,

David W.
NASA LaRC ASDC

Dear user support

I followed your suggestion about accessing with wget and I created the following code

#!/bin/bash
URL="https://data.asdc.earthdata.nasa.gov/asdc-prod-protected/TEMPO/TEMPO_NO2_L2_V03/2025.03.10/"
TOKEN=MY_TOKEN
wget -d --header "Authorization: Bearer $TOKEN" --recursive --no-parent --reject "index.html" --execute robots=off $URL

The goal of this script it to produce a list of the TEMPO files for March 10 2025 (2025.03.10).

However I am getting a 404 error Data not available.

I tried to retrieve one file with the -d debug option

wget -d https://data.asdc.earthdata.nasa.gov/asdc-prod-protected/TEMPO/TEMPO_NO2_L2_V03/2025.03.10/TEMPO_NO2_L2_V03_20250310T235549Z_S014G05.nc

and I see I can get the file after few redirections I retrieve the file. I think my problem seems to be getting the list of the files under the directories YYYY.MM.DD

Any ideas on how to get the listing?
Thank you very much in advance
Best regards
Roberto

Hi Roberto,

Please consult the website below for more information on how to use wget to download data from NASA.

https://nasa-openscapes.github.io/earthdata-cloud-cookbook/how-tos/access-data/access-command-line.html

Thanks,

David W.
NASA LaRC ASDC