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Relevance of Geospatial Technologies in monitoring Climate Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania. Shingirirai .S. Mutanga. Africa institute of south africa. Presentation Outline. Background. Climate Variability and Change a reality

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Relevance of Geospatial Technologies in monitoring Climate Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

Shingirirai .S. Mutanga

Africa institute of south africa


Presentation outline
Presentation Outline Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


Background
Background Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Climate Variability and Change a reality

  • Increasing Tends. Intensity and Frequency. (ICSU 2012)

  • Droughts & Floods: 1.5million affected.(WGA 2004)


Terms concepts
Terms & Concepts Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Climate, Variability, Change and Vulnerability a reality.

    • ST Deviation of Climate Variable from long term mean.

    • LT change in the earth's climate. (FAO 2007)

    • Vulnerability: Degree of susceptibility to extremes; Function of Magnitude.

  • Climate Change Mitigation and Adaptation

    • Adaptive Capacity: Ability to plan, prepare and implement measures.

    • Factors: (Adger 2006)

  • Question: How can we build resilience to disaster risks?

    • Geospatial technologies: Key!!!!!!!! Decision Support System for Disaster Management Support Services.


Study focus
Study Focus Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • In the light of the increasing disasters and impacts of climate change, adaptation is not an option but a necessity!!.

  • The risk of floods remain un-explored and the scope of impending losses un-adequately assessed.

  • Many development plans and policy formations overlook the risk, the impending impact, and coping & mitigation strategies despite the growing concerns of climate change.

  • Objectives:

    • Assess the impacts of floods:

    • Identify the hot spots of population and economic assets.

    • Map Dar es Salaam’s Exposure and Vulnerability extent to floods.

    • Assess the present adaptive measures in place.


Study focus1
STUDY FOCUS Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

Dec :2011


The city of dar es salaam
The City of Dar es Salaam Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Located Greater Horn of EA

  • Recurrence of Floods.

    • Hot, with 2 rainy seasons (Oct-Dec & Mar-May)

    • Rainfall : 1000mm

    • Temp: 26 degrees Celsius

City: Eastern part of the Tanzanian mainland.

Area : 1,350 square kilometres.

Population : About 4 Million residents.

70% Informal Settlements.

8% Growth Rate


Demography and economic characteristics
Demography and Economic Characteristics Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Demography

    • Pop: 2.5mil

    • Pop Density : 1500pple/square km)

  • Economic

    • Growing GDP.

    • Port :

    • 45% Nation’s gross I manufacturing

    • 95% International Trade


Applications of geospatial tech
APPLICATIONS OF GEOSPATIAL TECH Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


Rainfall
Rainfall Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

Rainfall for the period 1971-2009

Kebede: 2012

Year 2011: killed 11 people.

  • Recurrence of floods: 38 years recorded.


Flood risk mapping
Flood Risk Mapping Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


Flood risk mapping1
Flood Risk Mapping Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


Summary projected statistics
Summary Projected Statistics Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • 140 000 people located within low elevation zones.

  • Total 8% of people living in below mean sea level= .07%

  • 100 000 people be exposed by 2030. (Kebede et al 2011)

  • 225 ooo people exposed by 2070.


Adaptive capacity overview
Adaptive Capacity Overview Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


Key challenges
Key Challenges Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

Lack of Capacity

Financial Constraints

Poor Planning

Mushroom of informal Settlements

Poor forecasting

Lack of public awareness.

Overreliance on donor funding


Conclusion
Conclusion Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Climate change is a reality and there is need to deal with its effects such as floods.

  • The development of a comprehensive flood hazard map would be one of the most crucial steps for implementing non-structural remedial measures.

  • Provision of case studies that map community vulnerability areas is key in building resilience to natural disasters such as floods.

  • This study through the use of geospatial technologies aid in draw out implications for adaptation and adaptive policy.


Further analysis research
Further Analysis/Research Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania

  • Exposed population and Assets.

  • Delineation of Settlements and industries prone to floods.

  • Economic Value of estimated exposed assets.

  • Dual combination of bursting streams and rising sea level impacts.

  • Gaps: Social dimensions, participatory approaches, lack of up to date information.


THANK YOU Change related disasters in Africa: Special focus on Floods in Dar Es Salaam; Tanzania


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