Articles | Volume 6, issue 4
https://doi.org/10.5194/wcd-6-1683-2025
https://doi.org/10.5194/wcd-6-1683-2025
Research article
 | 
04 Dec 2025
Research article |  | 04 Dec 2025

The potential of GNSS radio occultation data for the analysis of the tropical width: a comparison with reanalyses

Annika Reiter, Julia Danzer, and Andrea K. Steiner

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Cited articles

Adam, O., Grise, K. M., Staten, P., Simpson, I. R., Davis, S. M., Davis, N. A., Waugh, D. W., Birner, T., and Ming, A.: The TropD software package (v1): standardized methods for calculating tropical-width diagnostics, Geosci. Model Dev., 11, 4339–4357, https://doi.org/10.5194/gmd-11-4339-2018, 2018. 
Amaya, D. J., Siler, N., Xie, S.-P., and Miller, A. J.: The interplay of internal and forced modes of Hadley Cell expansion: lessons from the global warming hiatus, Clim. Dynam., 51, 305–319, https://doi.org/10.1007/s00382-017-3921-5, 2018. 
Angerer, B., Ladstädter, F., Scherllin-Pirscher, B., Schwärz, M., Steiner, A. K., Foelsche, U., and Kirchengast, G.: Quality aspects of the Wegener Center multi-satellite GPS radio occultation record OPSv5.6, Atmos. Meas. Tech., 10, 4845–4863, https://doi.org/10.5194/amt-10-4845-2017, 2017. 
Anjana, U., Mathew, S. S., and Kumar, K. K.: Retrieval of the Hadley circulation boundaries at regional scales using global positioning system-radio occultation measurements, GPS Solut., 28, 22, https://doi.org/10.1007/s10291-023-01561-y, 2023. 
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Short summary
Observational Global navigation satellite system (GNSS) radio occultation (RO) temperature and wind data show high potential to study the tropical width. Comparisons of RO data with state-of-the-art reanalyses demonstrate their feasibility to study the tropopause break and jet stream metrics for zonal-mean and longitudinally-resolved studies. The RO data record provides observations in regions where other methods fall short, such as over oceans and in the Southern Hemisphere.
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