Sub-Saharan African G-WADI Regional chapter of the Global network on Water and Development Information for Arid Lands Achievements and prospects Dr Abdou ALI, PB 11011, AGRHYMET, Niamey, Niger a.ali@agrhymet.ne Prof. Cheikh B. Gaye, Université de Dakar, Dakar, Sénégal Cheikhbecayegaye@gmail.com
Background African GWADI The Arid and Semi-arid Regions of the World
Sub-Saharan African G-WADI 1 st Workshop: consultative meeting in Dakar in 2010 G-WADI Workshop 20-21 April 2010 Dakar, Senegal 35 participants from 12 countries
G-WADI-SSA : Outputs from consultative meeting Build on the existing expertise and know how (involvement of three sub-regional centres (AGRHYMET, ICPAC, SADC-DMC) Stakeholder mapping to identify key stakeholders and their intervention areas within arid and semi-arid zones in SSA Work in synergy with the other UNESCO-IHP networks in SSA such as FRIEND, ISARM, GRAPHIC and the network of HELP basins. After extensive discussions on the relevance of the G-WADI network in Sub-Saharan Africa, the participants agreed to formally establish a G- WADI network in Sub-Saharan Africa.
G-WADI-SSA: outputs from the consultative meeting: key topics Water augmentation techniques including rain water harvesting and aquifer recharge Soil-water management techniques Monitoring tools including early warning and drought monitor and flood Experimental basins and modeling Data, particularly rainfall data
Formal creation of G-WADI Sub Saharan Africa Paris - 9th December 2010 in a meeting at UNESCO headquarter An expert group is suggested (composed of, but not limited to, ICPAC, AGRHYMET, SADC, UCAD and UNESCO, and is chaired by Prof. Cheikh Gaye from the university of Dakar The Secretariat is hosted by AGRHYMET (AGRrométéorologie, HYdrologie, METéorologie) Regional Center, Niamey, Niger
Achievements: Transfer and validation of a drought and flood monitoring tool in West and East Africa One of the main achievement of G- WADI Sub-Sahara African is the transfer, validation and use of the AFDM Collaboration between UNESCO PRINCETON UNIVERSITY and Regional Centers
Soil moisture Daily rainfall Daily discharge Evapotranspiration Radiation Validations with At the Nigerian hydrological service Senegal River basin At the Volta- HYCOS At the Mali water resource service. AGRHYMET The system is used operationally by AGRHYMET on 10-day basis By the Nigerian hydrological service (NISHA) weekly report
G-WADI Capacity building on the AFDM in West-Africa
Training in East-Africa (ICPAC), on DM 10
Validation: dry and wet years
Reference publication on the system that includes most of the key stakeholders
Operational use: weekly flood forecasting report meeting with media by the Nigeria Hydrological Service Agency Discharge(m 3 /s) 35 000,00 NIGERIA HYDROLOGICAL SERVICES AGENCY (NIHSA) COMPARATIVE HYDROGRAPHS OF RIVER NIGER AT LOKOJA 2012/2013 2013/2014 2014/2015 FIG. 30 000,00 25 000,00 20 000,00 15 000,00 10 000,00 29/09/2012 11/10/2013 DATE WATER LEVEL(m) DISCHARGE (m 3 /s) 11/8/2014 5.49 7,987.00 12/8/2014 5.45 7,895.00 13/8/2014 5.36 7,688.00 14/8/2014 5.36 7,688.00 15/8/2014 5.43 7,849.00 16/8/2014 5.48 7,964.00 17/8/2014 5.53 8,079.00 18/8/2014 5.66 8,378.00 19/8/2014 5.66 8,378.00 20/8/2014 5.72 8,516.00 21/8/2014 6.04 9,266.00 22/8/2014 6.46 10,374.00 23/8/2014 6.75 11,140.00 24/8/2014 7.08 12,048.00 25/8/2014 7.44 13,164.00 26/8/2014 7.82 14,342.00 5 000,00 As at 1st September, 2014 the Water Level is 7.85m 0,00 01/06 01/07 01/08 01/09 01/10 01/11 01/12 01/01 01/02 01/03 01/04 01/05
Gender Mainstreaming in Drought Management workshop in Niamey Niger UNESCO AGRHYMET Gender and Drought: inextricably linked Vulnerability of Women and Girls to Drought a multidimensional reality
GWADI-GeoServer Meeting in Irvine http://hydis8.eng.uci.edu/hydis-unesco/ Zoom/Navigate Subset data Spatially: country and/watershed/extent Temporally: from to and accumulation
G-WADI Geo-Server Trainings on the use of rainfall estimates for flood monitoring and forecasting via the G-WADI Geo-Server Hydrologists in West-Africa are trained on the use of PERSIANN rainfall product for flood monitoring and forecasting. The PERSIANN product is accessible via GWADI Geo-Server. One ongoing PhD thesis that will intensively make use of PERSIANN product
Operational use of G-WADI Geo-Server Namibian Experiences Coping with Floods and Droughts using UNESCO G-WADI Geo-Server use Pauline Mufeti Namibia Hydrological Services Bulletin +/- 600 recipients You can also view past and present daily flood bulletins and other flood information on Namibia at NASA's Namibia Flood Dashboard http://matsu.opencloudconsortium.org/namibiaflood
Dealing with data scarcity in semi-arid region: Merging satellite and gauge data Gauge: good local precision Satellite: good spatial coverage
Training on gauge and satellite product merging technique
Short term prospects Organizing steering/expert group meeting, identifying topics lead by key scientist Assistant for the GWADI-Secretariat at AGRHYMET Revitalizing the G-WADI-SSA website Extending the African Drought Monitoring system to South Africa (Namibia workshop) Capacity building to develop regional Atlas on drought using the experience of UNESCO Chili on the use of L-Moments Capacity building Runoff/modelling for flood forecasting using real time satellite products Fund raising
Thank you