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Overview Algorithm Data Access

Umkehr Data Access

Daily Profiles:

Daily profiles are located in the following link: https://gml.noaa.gov/aftp/ozwv/DobsonUmkehr/


Data is formatted as txt and NetCDF files. In the text files, you will find the profiles in 16 pressure layers. The NetCDF will also have the 61 layer output and averaging kernels for both the 16 and 61 layer system.


Data for the Arosa/Davos record is maintained by MeteoSwiss and can also be found here: https://woudc.org/data/explore.php?lang=en

WOUDC archive:

Umkehr ozone profiles are archived at the Would Ozone and UltraViolet Data Center https://woudc.org/home.php

CITATION

  • Effertz P., Miagawa, K., Petropavlovskikh, I., McConville, G., Noirot, B. (2025). Optimized Umkehr profiles using Petropavlovskikh (2022) homogenization algorithm [Version number] [Data subset] [Date accessed]

LICENCE

These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0 1.0) CC0 1.0 Universal

FAIR USE POLICY

These data are made freely available to the public and the scientific community in the belief that their wide dissemination will lead to greater understanding and new scientific insights. To ensure that NOAA-GML receives fair credit for their work please include relevant citation text in publications. We encourage users to contact the data providers, who can provide detailed information about the measurements and scientific insight. In cases where the data are central to a publication, co-authorship for data providers may be appropriate.

WARNING

Every effort is made to produce the most accurate and precise measurements possible. However, we reserve the right to make corrections to the data based on calibration, new evidence that data collected were non-ambient or non-representative measurements, or for other reasons deemed scientifically justified. Reprocessing of data will be published as a new version. We are not responsible for results and conclusions based on use of these data without regard to this warning.

Monthly Mean Profiles:

Optimized Monthly Means are archived at https://doi.org/10.25810/pg7s-wj27

Software for Umkehr retrievals.

The UMK04 algorithm is written in FORTRAN. There are several wrappers for the original FORTRAN code:

WinDobson: https://www.data.jma.go.jp/wcc/dobson/windobson.html

Software for Ozone Spectrophotometers (Martin Stanik): https://www.o3soft.eu/

Python: https://arggit.usask.ca/Nick/umkehr