The 2nd WAMME Workshop

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2013 West African Monsoon and its Modeling  Session



West African Monsoon and its Modeling

AGU Atmospheric Section A072


(Cosponsors: Biogeosciences, Global Environmental Change, Hydrology, Nonlinear Geophysics, and Ocean Sciences Sections)

The West African Monsoon (WAM), a major component of the global climate system, possesses one of the strongest long-term (multi-decadal) signals in the 20th century associated with the Sahel drought. Despite the progress in WAM studies, better understanding and proper simulation of WAM at different scales and WAM association with external forcing (ocean, land, aerosols) remains a daunting task. This session focus on (1) intercomparison and evaluating skills of global and regional climate models in simulating the WAM rainfall and relevant processes; and identification of major challenges, weaknesses, and uncertainties that still remain in modeling the WAM; results from WAMME, AMMA, ALMIP, and other intercomparison are welcome, (2) representation of  major WAM characteristics and attribution to possible mechanisms at different time scales, and (3) studies using data from various sources for model evaluation and improvement.  Please submit the abstract before 6 August, 2013.   AGU has very strict rule on this deadline.   No exception.  


Conveners: Yongkang Xue, Bill Lau, Aaron Boone, Ibrah Seidou Sanda, and Wassila Thiaw


A11G. West African Monsoon and Its Modeling I Posters

Convener(s): Yongkang Xue (Univ California Los Angeles), William Lau (NASA GSFC), Wassila Thiaw (Climate Prediction Center) and IBRAH SEIDOU SANDA (AGRHYMET REGIONAL CENTER)

8:00 AM - 12:20 PM; Hall A-C (Moscone South)

8:00 AM - 8:00 AM  

A11G-0130. Evaluation of water and energy cycle simulated by different land surface models over the Gourma Sahelian site in Mali (ALMIP2 project).
grippa manuela; Kergoat Laurent; Boone Aaron; Christophe Peugeot; Jerome Demarty; Bernard Cappelaere

8:00 AM -8:00 AM   A11G-0131. West Africa Monsoon Changes in the CMIP5 Projections: Lessons from Idealized Simulations.
Michela Biasutti
8:00 AM -8:00 AM  

A11G-0133. On the relationships between Sahel precipitation, SST teleconnections and jet streams: a wavelet analysis 
Churchill Okonkwo; Belay Demoz

8:00 AM -8:00 AM   A11G-0134. How well do land surface models reproduce the water and energy cycles in the West African monsoon system ? Evaluation over the Upper Ouémé basin, Benin (ALMIP2 project) 
Christophe Peugeot; Aaron A. Boone; Jerome Demarty; grippa manuela; Kergoat Laurent; Bernard Cappelaere; Béranger Awessou; Jean-Martial Cohard; Sylvie Galle; Tania Gascon; Augusto Getirana; Basile Hector; Ossénath Mamadou; Aloïs Richard; Josiane Seghieri; Luc Séguis
8:00 AM -8:00 AM   A11G-0135. Interannual variability of vapor isotope in West Africa and its relation to ENSO
Atsushi Okazaki; Yusuke Satoh; Guillaume Tremoy; Francoise Vimeux; Kei Yoshimura
8:00 AM -8:00 AM   A11G-0136. Sahel rainfall variability as simulated by the CAM4 model and its associated atmospheric dynamics
Catherine Pomposi; Yochanan Kushnir; Alessandra Giannini
8:00 AM -8:00 AM   A11G-0137. The present and future of the West African monsoon: a process-oriented assessment of CMIP5 simulations along the AMMA transect
Romain Roehrig
8:00 AM -8:00 AM   A11G-0138. Future changes in the African monsoon analysed with 8 CMIP5 models: contrasted rainfall dipole and delayed withdrawal.
Paul-Arthur Monerie
8:00 AM -8:00 AM   A11G-0139. Extratropical North Atlantic SST influence on Sahel rainfall
Yuwei Liu; John C. Chiang
8:00 AM -8:00 AM   A11G-0140. The Annual Cycle of Moist Convection over West Africa
Matthew A. Janiga; Hanh Nguyen; Chidong Zhang; Chris D. Thorncroft
8:00 AM -8:00 AM   A11G-0141. RegCM Experiments in the Second West African Monsoon Modeling and Evaluation Project
8:00 AM -8:00 AM   A11G-0143. Intraseasonal Variability of the West African Monsoon in a Regional Climate Model
Ghassan Alaka; Eric D. Maloney
8:00 AM -8:00 AM   A11G-0144. Impact of burned area on African seasonal climate in regional modeling
Fernando De Sales; Yongkang Xue; Greg S. Okin
8:00 AM -8:00 AM   A11G-0145. The performance of a coupled SVAT and DGVM model over six decades in West Africa
Stephen D. Prince; Guoqiong Song; Yongkang Xue; Peter Cox; Zhengqiu Zhang

A13M. West African Monsoon and Its Modeling II

Convener(s):  Yongkang Xue (Univ California Los Angeles), William Lau (NASA GSFC), Wassila Thiaw (Climate Prediction Center) and IBRAH SEIDOU SANDA (AGRHYMET REGIONAL CENTER)


1:40 PM - 3:40 PM; 3001 (Moscone West)


1:40 PM - 1:50 PM


A13M-01. West African Monsoon in the MRI-AGCM3
Masahiro HOSAKA; Akio Kitoh

1:50 PM - 2:00 PM


A13M-02. Precipitation interannual variability and predictions for West Africa from the National Multi-Model Ensemble dataset
Wassila M. Thiaw

2:00 PM - 2:10 PM


A13M-03. The Multidecadal Atlantic SST - Sahel Rainfall Teleconnection in CMIP5 simulations (Invited)
Chris D. Thorncroft; Elinor R. Martin; Ben Booth

2:10 PM - 2:20 PM


A13M-04. Effect of multi-decadal variation of SST on rainfall and dust transport over West Africa and northern Atlantic Ocean
Kyu-Myong Kim; William K. Lau

2:20 PM - 2:30 PM


A13M-05. Impact of aerosols and atmospheric physics on regional climate model simulation of the African monsoons hydroclimate
Wilfran Moufouma-Okia

2:30 PM - 2:40 PM


A13M-06. Evaluation of West African Monsoon Processes and Feedbacks: Second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II)
Yongkang Xue; William K. Lau; Aaron A. Boone; IBRAH SEIDOU SANDA; Wassila M. Thiaw; Leonard Druyan; Wamme Team

2:40 PM - 2:50 PM


A13M-07. The relationship between the equatorial westerlies, upper-level zonal flow and interannual variability of the West African monsoon 
Sharon E. Nicholson

2:50 PM - 3:00 PM


A13M-08. Climatology and dynamics of nocturnal low-level stratus over the southern West African monsoon region
Andreas H. Fink; Robert Schuster; Peter Knippertz; Roderick van der Linden

3:00 PM - 3:10 PM


A13M-09. Intra-seasonal variability and predictability over West and Central Africa in northern spring (Invited)
Serge Janicot; Pierre-Honore Kamsu-Tamo; Andre Lenouo; David Monkam

3:10 PM - 3:20 PM


A13M-10. Development of West African Rainy Seasons (Invited)
Kerry H. Cook

3:20 PM - 3:30 PM


A13M-11. The regional impact of Land-Use Land-cover Change (LULCC) over West Africa from an ensemble of global climate models under the aupsices of the WAMMEII project (Invited)
Aaron A. Boone; Yongkang Xue; Ruth Comer; Fernando De Sales; Samson M. Hagos; Kathleen Schiro; Guoquiong Song; Guiling Wang; Zhichang Guo; Sarith P. Mahanama

3:30 PM - 3:40 PM


A13M-12. Representing soil moisture – precipitation feedbacks in the Sahel: spatial scale and parameterisation
Christopher Taylor; Cathryn Birch; Douglas Parker; Françoise Guichard; Grigory Nikulin; Nick Dixon