products and services of wmo commission for hydrology (chy)
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Products and Services of WMO Commission for Hydrology (CHy). Meteorological Services for Improved Humanitarian Planning and Response WMO Headquarters, Geneva, Switzerland, 31 August – 02 September 2010. Improved Humanitarian Planning and Response CHy Products and Services. - PowerPoint PPT PresentationTRANSCRIPT
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Products and Services of WMO Commission for Hydrology (CHy)
Meteorological Services for Improved Humanitarian Planning and Response
WMO Headquarters, Geneva, Switzerland, 31 August – 02 September 2010
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Improved Humanitarian Planning and ResponseCHy Products and Services
WMO COMMISION FOR HYDROLOGY• The Commission for Hydrology (CHy) shapes the water related activities of
the WMO and addresses issues related to the basic hydrological observation network, water resources assessment, flood forecasting and management, adaptability to climate variability and change and promotes exchange of technology and capacity building. In particular the outcomes of its deliberations provide guidance to WMO Member countries and WMO Secretariat for the implementation of the Hydrology and Water Resources Programme of WMO.
• Areas of activity include integrated hydrological networks, hydrological forecasting systems, hydrological aspects of natural disasters and environmental issues, assessment of water use, latest advances in hydrological technology and practical implementation of IWRM principles with particular attention to integrated flood management. This information is incorporated into technical standards, reports or guidelines that can be used by NHSs in their work.
• NHSs = National Hydrological Services (hydrological agencies)
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WMO/CHy:– Overall technical support to hydrological agencies
+ value adding• Capacity building• Cooperation between meteorological and hydrological
services• Transboundary cooperation• Scientific research• Standardization
– Projects and programmes
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WHYCOS: World Hydrological Cycle Observation System
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WMO FLOOD FORECASTING INITIATIVE
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FLASH FLOOD GUIDANCE SYSTEM
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HYDROLOGICAL FORECASTING AND PREDICTION– MANUAL ON FLOOD FORECASTING– (MANUAL ON LOW FLOWS)– ADVICE AND SUPPORT TO FFGS INITIATIVES– ADVISE ON AND MONITOR DEVELOPMENT OF GLOBAL FLOOD
ALERT SYSTEM– USE OF NUMERICAL WEATHER PREDICTION (NWP) FOR FLOOD
FORECASTING– GUIDANCE MATERIAL ON SEASONAL FLOW FORECASTING– INTERCOMPARISON OF OPEARTIONAL FLOOD FORECASTING
SYSTEMS– GUIDANCE AND ADVICE ON HYDROLOGCIAL RISK
MANAGEMENT
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Role of hydrological agencies (like National Hydrological Services) in disaster management:– Related to hydrological extremes:• Floods• (Droughts)
– Advisory services to (national) disaster management units:• Early warning/Forecasting • Impact monitoring• Long-term planning
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Improved Humanitarian Planning and ResponseCHy Products and Services
Role of hydrological agencies (like National Hydrological Services) in disaster management:– Related to hydrological extremes:• Floods• (Droughts)
– Advisory services to (national) disaster management units:• Early warning/Forecasting • Impact monitoring• Long-term planning
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Flood forecasting model - inputs:at any size of complexity (up to computerized Decision Support
Systems)– Most recent upstream riverflow conditions– Most recent catchment rainfall information– Present catchment conditions (soil saturation)– Predicted weather development (rainfall)– Hydrological catchment model (losses, time lag)– River channel routing model (attenuation, time lag)– Floodmapping for risk areas– Historic data records for ‘calibration’
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REPUBLIC OF ZAMBIAMINISTRY OF COMMUNICATION AND TRANSPORT
ZAMBIA METEOROLOGICAL DEPARTMENT
WEATHER MONITOR 7 DAYS WEATHER FORECAST 19TH TO 25TH FEBRUARY 2010 GENERAL SITUATION:
ITCZ is still oscillating about Central and Southern parts of Zambia. FORECAST FROM 19TH TO 25TH FEBRUARY 2010 Most parts of Zambia: Partly Cloudy to cloudy with rain and afternoon thundershowers in places. Heavier falls are expected over Lusaka, Central and North western Provinces.
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MINISTÉRIO DAS TELECOMUNICAÇÕES E TECNOLOGIA DE INFORMAÇÃOInstituto Nacional de Meteorologia-INAMET
AVISO DE CHUVAS Elaborado às 10 :00 horas (TL) do dia 11 de Abril de 2010 Um sistema de baixa presao bem acentuado localizado na parte Leste do pais ,vai influenciar o estado do tempo nas
provincias do Uige,Malanje, Lunda Norte,Lunda Sul e Moxico nas proximas 48 horas.Assim, o INAMET, prevê a partir de hoje dia 11 de Abril de 2010, ocorrência de chuvas fortes acompanhadas ou não de trovoadas nas provincias do Uige,Malanje, Lunda Norte,Lunda Sul e Moxico A quantidade de precipitação prevista poderá ser superior a 50 milimetros em 24 horas .
O Director Geral Adjunto Para Area Tecnica ................................................Joaquim Adolfo Xavier
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April 22, 2023
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Namibia daily flood bulletin 01 March 2010: The Zambezi River maintains its steady rise in Katima Mulilo. Friday afternoon, ZRA forwarded the upstream readings, confirming thearrival of a high flood in the Zambezi River at Chavuma near the Angola border . Friday’s reading was 8.81 m (on 26 Feb, up from7.71 m on 23 Feb). See attached graphs. It is possible to make the following comparison:2007: maximum at Chavuma: 9.04 m
maximum at Lukulu: 6.56 mmaximum at Katima Mulilo: 7.23 m
2008: maximum at Chavuma: 7.53 mmaximum at Lukulu: 5.82 mmaximum at Katima Mulilo: 5.88 m
2009: maximum at Chavuma: 9.71 mmaximum at Lukulu: 6.89 mmaximum at Katima Mulilo: 7.85 m
2010: Friday at Chavuma: 8.81 mThursday at Lukulu: 6.00 mtoday at Katima Mulilo: 4.92 m
The flow time of floods from Chavuma to Lukulu is a few days and then +/- two more weeks to Katima Mulilo. It depends on rains andflow conditions in the intermediate areas what magnitude of flood will ultimately reach Katima Mulilo, and it is also not known howmuch further the flood will still rise in Chavuma. For the time being, the heavy rains have moved out of the area and no new heavyrains are predicted by various models, but on Friday ZMD indicated the ITCZ still being over southern Zambia.
A prudent forecast is that Zambezi waterlevels may reach and pass the 7 m mark inKatima Mulilo by mid-March. This forecast will be updated and improved in the weeks tocome.
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Namibia daily flood bulletin 03 March 2010: There have again been heavy rains in parts of the Zambezicatchment. See attached NASA map. The waterlevels atChavuma started rising again. See attached graph. Ourforecast remains that the Katima Mulilo waterlevels areheading for 7 m by mid-March 2010. For perspective, theflood would be:
similar to 2007higher than 2008lower than 2009
But much will depend on the rains and the catchmentresponse in the coming weeks.
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Impact monitoring:• Overtopping of banks• Flow channels• Disruption of infrastructure• Access to services• Areas affected• People affected
Remote sensing• Initiate space charter activations
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Long-term planning:– Floodmapping• hazard/risk• Exposure/vulnerability
– Seasonal and monthly forecasts– Climate change impacts
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