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Vegetation feedback on Sahelian rainfall variability in a coupled climate land-vegetation model

MPG-Autoren
/persons/resource/persons37321

Schnitzler,  Karl-Georg
Climate Processes, MPI for Meteorology, Max Planck Society;

/persons/resource/persons37209

Knorr,  Wolfgang
Climate Processes, MPI for Meteorology, Max Planck Society;

/persons/resource/persons37231

Latif,  Mojib
The Ocean in the Earth System, MPI for Meteorology, Max Planck Society;

/persons/resource/persons37088

Bader,  Juergen
Climate Dynamics, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;

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Zitation

Schnitzler, K.-G., Knorr, W., Latif, M., Bader, J., & Zeng, N. (2001). Vegetation feedback on Sahelian rainfall variability in a coupled climate land-vegetation model. Report / Max-Planck-Institut für Meteorologie, 329.


Zitierlink: https://hdl.handle.net/21.11116/0000-0003-2EAF-6
Zusammenfassung
Rainfall variability in the Sahel region shows a dramatic drying trend from the

1950s to the 1980s. Yet, most atmospheric general circulation models (AGCM)

forced by observed sea surface temperatures (SSTs) were not able to reproduce

the amplitude of this multi-decadal variation. Here, we investigate the sensiti-

vity of Sahelian rainfall to vegetation-atmosphere interaction. We coupled the

simple dynamic vegetation model (SVege) and the ECHAM4-AGCM and for-

ced the system by observed SSTs. We show that vegetation-climate feedbacks

amplify the decadal rainfall variability and that the coupled system simulates

realistically the observed multi-decadal variations in Sahelian precipitation.