EGS XXV General Assembly, Nice, France, April 2000

OA32.01 Climate variability: African climate variability - Oral Programme
Attention: The numbers associated with the title of the contributions are the Manuscript Numbers for the Proceedings/Special Issue, the times associated with the names are the start-times of the oral presentations!

Convener: Janicot, S.
Co-Convener(s): Thorncroft, C.D.
Editor(s):
Co- Sponsorship:

Tuesday, 25 April 2000
Lecture Room: Euterpe

Chairperson: Janicot, S.

00:00
-0000		 Synoptic and meso-scales

Tuesday, 25 April 2000
Lecture Room: Euterpe

Chairperson: Janicot, S.

08:30
-0000		 THORNCROFT, C.D.; GREGORY, D.
An African easterly wave case study

08:45
-0000		 CORNFORTH, R.J.; THORNCROFT, C.D.
African Easterly Waves Growing on an Easterly Jet forced by Moist Convection

09:00
-0000		 REINER, A.; FINK, A.H.; SPETH, P.
The role of the African Easterly Wave (AEW) activity for West African Monsoon rainfall in a dipole (1987), wet (1988), and dry year (1990)

09:15
-0000		 FINK, A.H.; REINER, A.; SPETH, P.
The roles of water vapour convergence, monsoon layer depth, and static stability for West African Monsoon rainfall in a dipole (1987), wet (1988), and dry year (1990)

09:30
-0000		 DIEDHIOU, A.; JANICOT, S.; SAGNA, P.
Variability of the monsoon layer and rainfall over West Africa

09:45
-0000		 JANICOT, S.
Analysis of synoptic and intra-seasonal atmosheric patterns in the West African monsoon

10:00
-0000		 BEAU, I.; GUEREMY, J.F.; MARQUET, P.
Single-column simulations of the COPT81 case

10:15
-0000		 MATHON, V.; LAURENT, H.; LEBEL, T.
Objective identification of the Squall Lines over the Sahel

10:30
-0000		 DESALMAND, F.; SZANTAI, A.; LECOMTE, P.; DESBOIS, M.
Retrieving cloud motion winds in the trades using the visible imagery of METEOSAT-7

10:45
-0000		 BREAK
Chairperson: Thorncroft, C.D.

00:00
-0000		 Land Surface Processes
Chairperson: Thorncroft, C.D.

11:00
-0000		 ELTAHIR, E.A.B.
The role of the biosphere in the climate of West Africa (Solicited Paper)

11:30
-0000		 TEXIER, D.; THORNCROFT, C.D.
Seasonal cycle of the west African monsoon: role played by the vegetation

11:45
-0000		 TAYLOR, C.M.; CLARK, D.B.
Land surface heating and African easterly waves

12:00
-0000		 MAYNARD, K.; POLCHER, J.
The impact of land-surface processes on the interannual variability of tropical climate in the LMD GCM.

12:15
-0000		 BACMEISTER, J.; NIETO-FERREIRA, R.; SUAREZ, M.
Dynamics of the African Easterly Jet in the Aries GCM

12:30
-0000		 GALLEE, H.
Surface Processes in the Sahelian Region

12:45
-0000		 BORN, K.; GROSS, P.
Precipitation Modeling in The Atlas Mountains Using a Nonhydrostatic Mesoscale Model

13:00
-0000		 M'BAYI, R.; SAMBA-KIMBATA, M.J.; TCHIADEU, G.
Annual rainfall variability in the Niari Valley in the south of the Republic of Congo and its incidences on the vegetal ecosystem

13:15
-0000		 LUNCH
Chairperson: Eltahir, E.A.

00:00
-0000		 Interannual Variability and Predictability
Chairperson: Eltahir, E.A.

14:00
-0000		 CAMBERLIN, P.; JANICOT, S.; POCCARD, I.
Seasonality and atmospheric dynamics of the teleconnection between African rainfall and SST: Atlantic vs. ENSO

14:15
-0000		 ONIBON, H.; DELCLAUX, F.; LEBEL, T.; POLCHER, J.
Comparison of GCM and observed rainfall over the catch region (west Africa)

14:30
-0000		 ARPE, K.
Impacts of SST anomalies on the West African Monsoon variability

14:45
-0000		 PHILIPPON, N.; FONTAINE, B.
Statistical predictability study for July-September Sahel rainfall (1968-1998) and application to the 1999 summer rainfall forecast