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The history of rainfall data time-resolution in a wide variety of geographical areas

Morbidelli, Renato and García-Marín, Amanda Penelope and Mamun, Abdullah Al and Atiqur, Rahman Mohammad and Ayuso-Muñoz, José Luís and Taouti, Mohamed Bachir and Baranowski, Piotr and Bellocchi, Gianni and Sangüesa-Pool, Claudia and Bennett, Brett and Oyunmunkh, Byambaa and Bonaccorso, Brunella and Brocca, Luca and Caloiero, Tommaso and Caporali, Enrica and Caracciolo, Domenico and Casas-Castillo, M. Carmen and Catalini, Carlos G. and Chettih, Mohamed and Chowdhury, A.F.M. Kamal and Chowdhury, Rezaul and Corradini, Corrado and Custò, Jeffrey and Dari, Jacopo and Diodato, Nazzareno and Doesken, Nolan and Dumitrescu, Alexandru and Estévez, Javier and Flammini, Alessia and Fowler, Hayley J. and Freni, Gabriele and Fusto, Francesco and García-Barrón, Leoncio and Manea, Ancuta and Goenster-Jordan, Sven and Hinson, Stuart and Kanecka-Geszke, Ewa and Kar, Kanak Kanti and Kasperska-Wołowicz, Wiesława and Krabbi, Miina and Krzyszczak, Jaromir and Llabrés-Brustenga, Alba and Ledesma, José L.J. and Liu, Tie and Lompi, Marco and Marsico, Loredana and Mascaro, Giuseppe and Moramarco, Tommaso and Newman, Noah and Orzan, Alina and Pampaloni, Matteo and Pizarro-Tapia, Roberto and Torres, Antonio Puentes and Rashid, Md Mamunur and Rodríguez-Solà, Raúl and Manzor, Marcelo Sepulveda and Siwek, Krzysztof and Sousa, Arturo and Timbadiya, P.V. and Filippos, Tymvios and Vilcea, Marina Georgiana and Viterbo, Francesca and Yoo, Chulsang and Zeri, Marcelo and Zittis, Georgios and Saltalippi, Carla (2020) The history of rainfall data time-resolution in a wide variety of geographical areas. Journal of Hydrology, 590. ISSN 0022-1694

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Collected rainfall records by gauges lead to key forcings in most hydrological studies. Depending on sensor type and recording systems, such data are characterized by different time-resolutions (or temporal aggregations), ta. We present an historical analysis of the time-evolution of ta based on a large database of rain gauge networks operative in many study areas. Globally, ta data were collected for 25,423 rain gauge stations across 32 geographic areas, with larger contributions from Australia, USA, Italy and Spain. For very old networks early recordings were manual with coarse time-resolution, typically daily or sometimes monthly. With a few exceptions, mechanical recordings on paper rolls began in the first half of the 20th century, typically with ta of 1 h or 30 min. Digital registrations started only during the last three decades of the 20th century. This short period limits investigations that require long time-series of sub-daily rainfall data, e.g, analyses of the effects of climate change on short-duration (sub-hourly) heavy rainfall. In addition, in the areas with rainfall data characterized for many years by coarse time-resolutions, annual maximum rainfall depths of short duration can be potentially underestimated and their use would produce errors in the results of successive applications. Currently, only 50% of the stations provide useful data at any time-resolution, that practically means ta = 1 min. However, a significant reduction of these issues can be obtained through the information content of the present database. Finally, we suggest an integration of the database by including additional rain gauge networks to enhance its usefulness particularly in a comparative analysis of the effects of climate change on extreme rainfalls of short duration available in different locations.

Item Type: Article (Journal)
Additional Information: 5174/82963
Uncontrolled Keywords: Hydrology history, Rainfall data measurements, Rainfall time resolution
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA197 Engineering meteorology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Civil Engineering
Kulliyyah of Engineering
Depositing User: Dr Abdullah Al Mamun
Date Deposited: 15 Sep 2020 12:25
Last Modified: 15 Sep 2020 12:25
URI: http://irep.iium.edu.my/id/eprint/82963

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