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-- Southern Hemisphere ADditional OZonesondes

An Archive of sub/tropical and remote ozonesonde data

Principal Investigator: Dr. Ryan M. Stauffer (NASA/Goddard Space Flight Center)

Founding Principal Investigator: Dr. Anne M. Thompson (NASA/Goddard Space Flight Center)

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A number of ozonesonde stations are operating in the tropics, subtropics, and the southern hemisphere in general, but with differing frequency and reporting procedures. SHADOZ (Southern Hemisphere ADditional OZonesondes) is designed to remedy this data discrepancy, by coordinating launches, supplying additional sondes in some cases, and by providing a central archive location. Since 1998, ozonesonde data have been collected and made available through this website.

Questions regarding sonde data from specific stations should be directed to the stations' principal investigator. A list of PI contact information can be found on the PI CONTACTS link in the banner above.


Exciting News for SHADOZ!!!

Starting in 2025, two stations are joining the SHADOZ network: Quito, Ecuador, and Palau (Tropical West Pacific).

In 2021, ozonesonde launches at the San Cristóbal, Galapagos, Ecuador station resumed and at the same time data from Quito, Ecuador, ozonesonde launches also became available on the SHADOZ archive. Ozonesonde launches began in 2014 at Universidad San Francisco de Quito’s Atmospheric Measurement Station (EMA). For more on the Quito station, see the paper published by Cazorla and Herrera, (2022). Past Quito data (2014-2021) will be available on the Archive soon!

The Palau Atmospheric Observatory, located in the Tropical Western Pacific, initiated ozonesonde launches in 2016 as part of the EU-funded StratoClim (Stratospheric and upper tropospheric processes for better Climate predictions, 2015-2019) project. The measurement site, sponsored by the Alfred Wegener Institute (AWI), launches ozonesondes twice per month. For more information on the observing station, see Müller et al. (2024). New ozonesonde data from 2016-2024 will be available soon on the SHADOZ Archive!

In addition to the two new SHADOZ stations, the Wallops Island, VA, USA, station (operated and maintained by the NASA GSFC SHADOZ team), now has its ozonesonde data in SHADOZ V06 format available on the SHADOZ archive (far right tab above)!



NEW Science with SHADOZ Data in the Tropospheric Ozone Assessment Report (TOAR-II) Special Issue!!



We would like to keep a running list of papers that use SHADOZ data. Please email a reference of your manuscript to the archiver: Debra.E.Kollonige@nasa.gov

Publications using SHADOZ data should include the following:




Data Disclaimer and Guidelines:


The data on this website are subject to revision and reprocessing. Check dates of creation to download the most current version. Contact the co-investigators for questions concerning data techniques and quality.

Access to these data is free to the public. Whenever substantial use is made of their data, you accept that an offer of co-authorship will be made through personal contact. In all cases, an acknowledgement must be made to the data co-investigators and SHADOZ when these data are used in publication. Click here for a list of contact information on the SHADOZ station PI's

SHADOZ reserves the right to limit access to the Data Archive and to alter or change the layout and content of the website.