Monthly convective boundary layer height study over Brazil using radiosonde, ERA5, and COSMIC-2 data

de Arruda Moreira, G. ORCID: https://orcid.org/0000-0003-4698-0510, Pérez Herrera, M. J. ORCID: https://orcid.org/0009-0002-7250-5625, Garnes Morales, G. ORCID: https://orcid.org/0009-0002-8091-7048, Costa, M. J. ORCID: https://orcid.org/0000-0003-2981-2232, Cacheffo, A. ORCID: https://orcid.org/0000-0002-8801-7434, Carbone, S. ORCID: https://orcid.org/0000-0002-3397-1183, Lopes, F. J. d. S. ORCID: https://orcid.org/0000-0001-7243-7197, Abril-Gago, J. ORCID: https://orcid.org/0000-0001-7806-5013, Andújar-Maqueda, J. ORCID: https://orcid.org/0000-0003-1157-8521, de Souza Fernandes Duarte, E. ORCID: https://orcid.org/0000-0002-2785-6648, Pires Salgueiro, V. C. ORCID: https://orcid.org/0000-0003-0169-9231, Bortoli, D. ORCID: https://orcid.org/0000-0002-2334-4055 and Guerrero-Rascado, J. L. ORCID: https://orcid.org/0000-0002-8317-2304 (2025) Monthly convective boundary layer height study over Brazil using radiosonde, ERA5, and COSMIC-2 data. Remote Sensing, 17 (22). 3672. ISSN 2072-4292 doi: 10.3390/rs17223672

Abstract/Summary

Although the atmospheric boundary layer height (ABLH) is a highly relevant parameter for various meteorological studies, the analysis of its behavior remains undersampled in South America, especially in Brazil. In this context, this work presents a monthly characterization of the ABLH during the convective period (Convective Boundary Layer Height-CBLH) using radiosonde data and a comparison between the monthly patterns obtained from ERA5 and COSMIC-2 data. The results demonstrate that, based on radiosonde data, the CBLH can be grouped into six regions (Northern Amazon, North, Northeast, Midwest, Southeast, and South), with seasonality varying according to the continentality and the climate to which they are exposed. The ERA5 and COSMIC-2 data show considerable agreement for most of the year [average absolute difference of [362 ± 182] m] and demonstrate the same seasonality observed in radiosondes for the North Amazon, North, Northeast, Southeast, and South regions. The highest discrepancies between ERA5 and COSMIC-2 occur during the fire season, mainly at Midwest region, reaching 802 m in July, likely linked to the sensitivity of the COSMIC-2 to fire plumes.

Item Type	Article
URI	https://centaur.reading.ac.uk/id/eprint/127190
Identification Number/DOI	10.3390/rs17223672
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	MDPI AG
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