Multidecadal variability of the continental precipitation annual amplitude driven by AMO and ENSO
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Title: | Multidecadal variability of the continental precipitation annual amplitude driven by AMO and ENSO |
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Authors: | Garcia-Garcia, David | Ummenhofer, Caroline C. |
Research Group/s: | Geodesia Espacial y Dinámica Espacial |
Center, Department or Service: | Universidad de Alicante. Departamento de Matemática Aplicada |
Keywords: | ENSO | AMO | Continental precipitation annual amplitude | Multidecadal | Teleconnection |
Knowledge Area: | Matemática Aplicada |
Issue Date: | 22-Jan-2015 |
Publisher: | Wiley |
Citation: | Geophysical Research Letters. 2015, 42. doi:10.1002/2014GL062451 |
Abstract: | As the water vapor content in the atmosphere scales with temperature, a warmer world is expected to feature an intensification of the hydrological cycle. Work to date has mainly focused on mean precipitation changes, whose connection to climatic modes is elusive at a global scale. Here we show that continental precipitation annual amplitude, which represents the annual range between minimum and maximum (monthly) rainfall, covaries with a linear combination of the Atlantic Multidecadal Oscillation and low-frequency variations in the El Niño–Southern Oscillation on a decadal to multidecadal scale with a correlation coefficient of 0.92 (P<0.01). The teleconnection is a result of changes in moisture transport in key regions. Reported trends in the annual amplitude of global precipitation in recent decades need to be assessed in light of this substantial low-frequency variability, which could mask or enhance an anthropogenic signal in hydrological cycle changes. |
Sponsor: | D.G.G. was supported through a Spanish Project (CGL2010-12153-E) and the Generalitat Valenciana (GV/2013/144 and ACOMP-2013-068) and C.C.U. through the Penzance and John P. Chase Memorial Endowed Funds at WHOI. |
URI: | http://hdl.handle.net/10045/44265 |
ISSN: | 0094-8276 |
DOI: | 10.1002/2014GL062451 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | ©2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1002/2014GL062451 |
Appears in Collections: | INV - GEDE - Artículos de Revistas |
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File | Description | Size | Format | |
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2015_Garcia-Garcia_Ummenhofer_GeophysResLett.pdf | 1,53 MB | Adobe PDF | Open Preview | |
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