Articles | Volume 40, issue 3
https://doi.org/10.5194/angeo-40-359-2022
https://doi.org/10.5194/angeo-40-359-2022
Regular paper
 | 
02 Jun 2022
Regular paper |  | 02 Jun 2022

Determination of tropical belt widening using multiple GNSS radio occultation measurements

Mohamed Darrag, Shuanggen Jin, Andrés Calabia, and Aalaa Samy

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Tropical belt expansion and its impacts on climate variability in the Mediterranean from 1980 to 2022
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EGUsphere, https://doi.org/10.5194/egusphere-2025-6521,https://doi.org/10.5194/egusphere-2025-6521, 2026
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Cited articles

Adam, O., Schneider, T., and Harnik, N.: Role of Changes in Mean Temperatures versus Temperature Gradients in the Recent Widening of the Hadley Circulation, J. Clim., 27, 7450–7461, 2014. 
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Adler, R., Wang, J., Sapiano, M., Huffman, G., Chiu, L., Xie, P., Ferraro, R., Schneider, U., Becker, A., Bolvin, D., Nelkin, E., Gu, G., and NOAA CDR Program: Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 2.3 (Monthly), National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI) [data set], https://doi.org/10.7289/V56971M6, 2016. 
AIRS project: Aqua/AIRS L3 Monthly Standard Physical Retrieval (AIRS-only) 1× 1 V7.0, Greenbelt, MD, USA, Goddard Earth Sciences Data and Information Services Center (GES DISC) [data set], https://doi.org/10.5067/UBENJB9D3T2H, 2019a. 
AIRS project: Aqua/AIRS L3 Monthly Standard Physical Retrieval (AIRS+AMSU) 1× 1 V7.0, Greenbelt, MD, USA, Goddard Earth Sciences Data and Information Services Center (GES DISC) [data set], https://doi.org/10.5067/KUC55JEVO1SR, 2019b. 
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Short summary
We investigated the possible widening of the tropical belt along with the probable drivers and impacts based on high-accuracy, high-resolution GNSS RO data (2001–2020). The results show that the tropical belt has significant expansion in the Northern Hemisphere, while the Southern Hemisphere has no significant expansion.
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