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Fewer clouds in the Mediterranean: consistency of observations and climate simulations

Clouds play a major role in the climate system, but large uncertainties remain about their decadal variations. Here we report a widespread decrease in cloud cover since the 1970 s over the Mediterranean region, in particular during the 1970 s–1980 s, especially in the central and eastern areas and during springtime. Confidence in these findings is high due to the good agreement between the interannual variations of cloud cover provided by surface observations and several satellite-derived and reanalysis products, although some discrepancies exist in their trends. Climate model simulations of the historical experiment from the Coupled Model Intercomparison Project Phase 5 (CMIP5) also exhibit a decrease in cloud cover over the Mediterranean since the 1970 s, in agreement with surface observations, although the rate of decrease is slightly lower. The observed northward expansion of the Hadley cell is discussed as a possible cause of detected trends

Several authors are involved within the projects CGL2010-18546, CGL2014-55976-R, and CGL2014-52135-C03-01 funded by the Spanish Ministry of Economy and Competitiveness

Scientific Reports, 2017, vol.7, art. núm. 41475

Nature Publishing Group

Author: Sánchez Lorenzo, Arturo
Enríquez Alonso, Aarón
Calbó Angrill, Josep
González Gutiérrez, Josep Abel
Wild, Martin
Folini, Doris
Norris, Joel R.
Vicente-Serrano, Sergio M.
Date: 2017 February 2
Abstract: Clouds play a major role in the climate system, but large uncertainties remain about their decadal variations. Here we report a widespread decrease in cloud cover since the 1970 s over the Mediterranean region, in particular during the 1970 s–1980 s, especially in the central and eastern areas and during springtime. Confidence in these findings is high due to the good agreement between the interannual variations of cloud cover provided by surface observations and several satellite-derived and reanalysis products, although some discrepancies exist in their trends. Climate model simulations of the historical experiment from the Coupled Model Intercomparison Project Phase 5 (CMIP5) also exhibit a decrease in cloud cover over the Mediterranean since the 1970 s, in agreement with surface observations, although the rate of decrease is slightly lower. The observed northward expansion of the Hadley cell is discussed as a possible cause of detected trends
Several authors are involved within the projects CGL2010-18546, CGL2014-55976-R, and CGL2014-52135-C03-01 funded by the Spanish Ministry of Economy and Competitiveness
Format: application/pdf
ISSN: 2045-2322
Document access: http://hdl.handle.net/10256/13871
Language: eng
Publisher: Nature Publishing Group
Collection: MICINN/PN 2011-2014/CGL2010-18546
MINECO/PE 2015-2017/CGL2014-55976-R
Reproducció digital del document publicat a: http://dx.doi.org/10.1038/srep41475
Articles publicats (D-F)
Is part of: Scientific Reports, 2017, vol.7, art. núm. 41475
Rights: Attribution 3.0 Spain
Rights URI: http://creativecommons.org/licenses/by/3.0/es/
Subject: Climatologia -- Simulació, Mètodes de
Climatology -- Simulation methods
Núvols
Clouds
Title: Fewer clouds in the Mediterranean: consistency of observations and climate simulations
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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