1. DISTRESS SIGNALS CONFERENCE ON ACTIONS FOR CLIMATE-INDUCED MIGRATION HAMBURG, GERMANY, 17 JUNE 2013 Can mobile phones be used to map climate change- induced migration? Stephen Roddick International Centre for Climate Change and Development, Dhaka, Bangladesh

2. “Human mobility extends in the spatial domain from local travel to international migration, and in the temporal dimension from short-term stays to permanent relocations... Classification and measurement of such phenomena is inevitably complex.” Martin Bell and Salut Muhidin, ‘Cross National Comparisons of Internal Migration’ UNDP, 2009

3. 1.Manual collection and communication 2.Crowd-sourcing via SMS 3.Smart phone applications a.GPS mapping b.Bluetooth scanning 4.Statistical analysis of charging data records (CDRs) How can we use mobile phones to map human mobility?

4. Time of call Duration Sending phone Receiving phone Sending tower Receiving tower Type of call Statistical analysis of Charging Data Records (CDRs)

5. Humans are predictable Home Work Friends & Family

6. Short-term: flooding and cyclones Meso-term: Changing weather patterns Long term impacts: sea-level rise  agriculture, fisheries, health How do climate change impacts affect mobility patterns? 20%20% 20%20%

7. 20%20% 20%20% How can we use mobile data to map climate change-related migration? 20%20% 20%20% 20%20% 20%20% 20%20% 20%20% 20%20% 20%20% Compare differentially affected populations Scale-up to community-level  Radius of gyration Monitor mobility patterns over time 2 Years5 Years10 Years

8. 1.Differential ownership and usage 2.Limitations of the methodology 3.Obtaining data 4.Privacy 1.Scale 2.Accuracy 3.Building on existing data sources 4.Forecasting Opportunities Challenges

9. THANK YOU Stephen Roddick steveroddick@gmail.com International Centre for Climate Change and Development (ICCCAD), Dhaka, Bangladesh Dr. David Wrathall david.wrathall@gmail.com Institute for Environment and Human Security at UN University (UNU-EHS), Bonn, Germany