Imperial College London
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ProfessorApostolosVoulgarakis

Faculty of Natural Sciences, Department of Physics

Professor in Global Climate and Environmental Change
 
 
 
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Contact

 

a.voulgarakis Website

 
 
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Location

 

Huxley 709BHuxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Richardson:2018:10.1002/2017GL076520,
author = {Richardson, TB and Forster, PM and Andrews, T and Boucher, O and Faluvegi, G and Fläschner, D and Kasoar, M and Kirkevåg, A and Lamarque, JF and Myhre, G and Olivié, D and Samset, BH and Shawki, D and Shindell, D and Takemura, T and Voulgarakis, A},
doi = {10.1002/2017GL076520},
journal = {Geophysical Research Letters},
pages = {2815--2825},
title = {Carbon Dioxide Physiological Forcing Dominates Projected Eastern Amazonian Drying},
url = {http://dx.doi.org/10.1002/2017GL076520},
volume = {45},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Future projections of east Amazonian precipitation indicate drying, but they are uncertain and poorly understood. In this study we analyze the Amazonian precipitation response to individual atmospheric forcings using a number of global climate models. Black carbon is found to drive reduced precipitation over the Amazon due to temperature-driven circulation changes, but the magnitude is uncertain. CO 2 drives reductions in precipitation concentrated in the east, mainly due to a robustly negative, but highly variable in magnitude, fast response. We find that the physiological effect of CO 2 on plant stomata is the dominant driver of the fast response due to reduced latent heating and also contributes to the large model spread. Using a simple model, we show that CO 2 physiological effects dominate future multimodel mean precipitation projections over the Amazon. However, in individual models temperature-driven changes can be large, but due to little agreement, they largely cancel out in the model mean.
AU  - Richardson,TB
AU  - Forster,PM
AU  - Andrews,T
AU  - Boucher,O
AU  - Faluvegi,G
AU  - Fläschner,D
AU  - Kasoar,M
AU  - Kirkevåg,A
AU  - Lamarque,JF
AU  - Myhre,G
AU  - Olivié,D
AU  - Samset,BH
AU  - Shawki,D
AU  - Shindell,D
AU  - Takemura,T
AU  - Voulgarakis,A
DO  - 10.1002/2017GL076520
EP  - 2825
PY  - 2018///
SN  - 0094-8276
SP  - 2815
TI  - Carbon Dioxide Physiological Forcing Dominates Projected Eastern Amazonian Drying
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1002/2017GL076520
UR  - http://hdl.handle.net/10044/1/59348
VL  - 45
ER  -
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