New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021)
Abstract Studies related to monitoring changes in frequency, intensity and duration of precipitation extremes are key to creating efficient climate change measures and forest conservation policies. This study describes new insights into rainfall precipitation extremes over the Amazon basin (AB) duri...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2024
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/173769 |
| _version_ | 1855522306510553088 |
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| author | Cerón, Wilmar L. Kayano, Mary T. Andreoli, Rita V. Canchala, Teresita Avila-Diaz, Alvaro Ribeiro, Igor O Rojas, Juan D Escobar Carbonari, Daniel Tapasco, Jeimar |
| author_browse | Andreoli, Rita V. Avila-Diaz, Alvaro Canchala, Teresita Cerón, Wilmar L. Escobar Carbonari, Daniel Kayano, Mary T. Ribeiro, Igor O Rojas, Juan D Tapasco, Jeimar |
| author_facet | Cerón, Wilmar L. Kayano, Mary T. Andreoli, Rita V. Canchala, Teresita Avila-Diaz, Alvaro Ribeiro, Igor O Rojas, Juan D Escobar Carbonari, Daniel Tapasco, Jeimar |
| author_sort | Cerón, Wilmar L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Abstract Studies related to monitoring changes in frequency, intensity and duration of precipitation extremes are key to creating efficient climate change measures and forest conservation policies. This study describes new insights into rainfall precipitation extremes over the Amazon basin (AB) during the last four decades (1981–2021) from the Climate Hazards Group InfraRed Precipitation with Station data (CHIRPSv2). Here we analysed the trends of daily extreme precipitation indices proposed by the Expert Team on Climate Change Detection and Indices (ETCCDI) at the seasonal scale, using the trend‐empirical orthogonal function (TEOF). Our results indicate that the frequency of precipitation extremes increased over Peruvian Amazonia and northeastern Brazilian Amazonia, and reduced in the centre of AB, mainly during the first seasons of the year: December–January–February (DJF) and March–April–May (MAM). The cooling trend over the eastern and central tropical Pacific and the warming trend over the tropical and western subtropical Pacific could associate with the increase in frequency of precipitation extremes in DJF. Furthermore, during June–July–August (JJA) and September–October–November (SON), rainfall intensity indices showed a decrease in Colombia and the Bolivian Amazon; in contrast, northern and southern Peru delivered an increased pattern. The trend pattern in the JJA and SON seasons could be associated with a warming trend over most of the North Atlantic and a cooling in the 40°–60° S band. Our results demonstrate that the precipitation extremes over the AB have spatially varying trends. These heterogeneous trends over the space might be take into account for robust adaptation policies over the countries that are parts of the AB, such as Bolivia, Brazil, Colombia, Ecuador, Guyana, Perú, Surinam and Venezuela. |
| format | Journal Article |
| id | CGSpace173769 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1737692025-10-26T12:51:55Z New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) Cerón, Wilmar L. Kayano, Mary T. Andreoli, Rita V. Canchala, Teresita Avila-Diaz, Alvaro Ribeiro, Igor O Rojas, Juan D Escobar Carbonari, Daniel Tapasco, Jeimar cambio climático precipitation subtropical zones Abstract Studies related to monitoring changes in frequency, intensity and duration of precipitation extremes are key to creating efficient climate change measures and forest conservation policies. This study describes new insights into rainfall precipitation extremes over the Amazon basin (AB) during the last four decades (1981–2021) from the Climate Hazards Group InfraRed Precipitation with Station data (CHIRPSv2). Here we analysed the trends of daily extreme precipitation indices proposed by the Expert Team on Climate Change Detection and Indices (ETCCDI) at the seasonal scale, using the trend‐empirical orthogonal function (TEOF). Our results indicate that the frequency of precipitation extremes increased over Peruvian Amazonia and northeastern Brazilian Amazonia, and reduced in the centre of AB, mainly during the first seasons of the year: December–January–February (DJF) and March–April–May (MAM). The cooling trend over the eastern and central tropical Pacific and the warming trend over the tropical and western subtropical Pacific could associate with the increase in frequency of precipitation extremes in DJF. Furthermore, during June–July–August (JJA) and September–October–November (SON), rainfall intensity indices showed a decrease in Colombia and the Bolivian Amazon; in contrast, northern and southern Peru delivered an increased pattern. The trend pattern in the JJA and SON seasons could be associated with a warming trend over most of the North Atlantic and a cooling in the 40°–60° S band. Our results demonstrate that the precipitation extremes over the AB have spatially varying trends. These heterogeneous trends over the space might be take into account for robust adaptation policies over the countries that are parts of the AB, such as Bolivia, Brazil, Colombia, Ecuador, Guyana, Perú, Surinam and Venezuela. 2024-09 2025-03-21T06:19:55Z 2025-03-21T06:19:55Z Journal Article https://hdl.handle.net/10568/173769 en Limited Access Wiley Cerón, W.L.; Kayano, M.T.; Andreoli, R.V.; Canchala, T.; Avila-Diaz, A.; Ribeiro, I.; Rojas, J.D..; Escobar Carbonari, D.; Tapasco, J. (2024) New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021). International Journal of Climatology 44(11): p. 3955 - 3975. ISSN: 0899-8418 |
| spellingShingle | cambio climático precipitation subtropical zones Cerón, Wilmar L. Kayano, Mary T. Andreoli, Rita V. Canchala, Teresita Avila-Diaz, Alvaro Ribeiro, Igor O Rojas, Juan D Escobar Carbonari, Daniel Tapasco, Jeimar New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title | New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title_full | New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title_fullStr | New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title_full_unstemmed | New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title_short | New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021) |
| title_sort | new insights into trends of rainfall extremes in the amazon basin through trend empirical orthogonal function 1981 2021 |
| topic | cambio climático precipitation subtropical zones |
| url | https://hdl.handle.net/10568/173769 |
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