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Global Impacts of El Nino on Terrestrial Moisture Recycling
Stockholm University, Faculty of Science, Department of Physical Geography. Stockholm University, Faculty of Science, Stockholm University Baltic Sea Centre. Stockholm University, Faculty of Science, Stockholm Resilience Centre. Stockholm University, Faculty of Science, The Bolin Centre for Climate Research (together with KTH & SMHI).ORCID iD: 0000-0002-6769-0136
Number of Authors: 42023 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 50, no 10, article id e2023GL103147Article in journal (Refereed) Published
Abstract [en]

The global impacts of El Nino on precipitation have been long-recognized, but more understanding of the mechanisms behind this influence is needed. For instance, previous studies have largely overlooked the potential impacts of El Nino on terrestrial moisture recycling (TMR). We perform a 40-year forward tracking simulation to derive a global climatology of recycled precipitation and use a composite analysis to investigate how El Nino affects TMR. We identify seven regions where the El Nino impact on TMR is most significant and find that, in these regions, changes in precipitation and TMR are directly related: they increase or decrease together. In addition, we find a marked latitudinal contrast between the Southern Hemisphere, where TMR increases during El Nino, and the Northern Hemisphere and the tropics, where it decreases. Our results indicate that the weakening and strengthening of TMR can be behind precipitation changes caused by El Nino globally.

Place, publisher, year, edition, pages
2023. Vol. 50, no 10, article id e2023GL103147
Keywords [en]
ENSO, terrestrial moisture recycling, composite analysis, precipitation
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-229913DOI: 10.1029/2023GL103147ISI: 000999860900001Scopus ID: 2-s2.0-85160398921OAI: oai:DiVA.org:su-229913DiVA, id: diva2:1862901
Available from: 2024-05-30 Created: 2024-05-30 Last updated: 2024-10-15Bibliographically approved

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Jaramillo, Fernando

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Arias, Paola A. A.Jaramillo, FernandoSalazar, Juan F. F.
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Department of Physical GeographyStockholm University Baltic Sea CentreStockholm Resilience CentreThe Bolin Centre for Climate Research (together with KTH & SMHI)
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Geophysical Research Letters
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