Skip to data content Skip to data search

TRANS2AM: NWS Mandatory and Significant Level Radiosonde Data


Mandatory and significant level radiosonde data from the National Weather Service (NWS) KDNR (Denver, CO) and KLBF (North Platte, NE) sites for the TRANS2AM phase 1 (July and August 2021) and phase 2 (August and September 2022) campaigns.

Archive note

No data are available for the KDNR site for the phase 2 period as the site did not release any radiosondes due to an NWS reduction in service due to a helium shortage.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 1.0 (2021-11-16)
  • 2.0 (2023-01-24):

    Added data from the TRANS2AM Phase 2 campaign. Data from Phase 1 is unchanged.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
Subscribe Subscribe to receive email when new or updated data is available.
Related projects
Frequency 12 hourly
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2021-07-01 00:00:00
End datetime 2022-09-30 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 41.13, Minimum (South) Latitude: 39.77
Minimum (West) Longitude: -104.88, Maximum (East) Longitude: -100.68

Primary point of contact information

EOL Data Support <>

Additional contact information


Example citation following ESIP guidelines:

NOAA/Earth System Research Laboratory (ESRL). 2023. TRANS2AM: NWS Mandatory and Significant Level Radiosonde Data. Version 2.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 09 Dec 2023.

Today's date is shown: please replace with the date of your most recent access.

Additional citation styles

The citation text below is from the DataCite Content Resolver service and may take a few seconds to load. The styles and locales are obtained from CrossCite, which also provides a citation formatter. See ReFindit for another alternative. Formatting is not perfect: please verify and edit before use. Today's date is shown: please replace with the date of your most recent access.

Style: Locale:

Ancillary information

Metadata download

Note that your browser may not display the above metadata links, but automatically save them as files in a folder such as "Downloads"