* The Motivation (picture of Pakistan 2010) * Future Flood Trends This is the kind of fanciful pseudo-math that motivates questions, and not at all justified. Blue is the danger from increasing variation in precipitation. Green is the effect of glaciers-- over 50% of the flow in these rivers comes from Himalayan glacier melt, and it's increased over 33%. But how big is this effect on floods, and when will it peak? * Future Flood Trends 2 At least, hopefully it's fanciful. This is disaster data from the EM-DAT database, as a rolling average of floods of various magnitudes, and yes, that is a 90% chance of having a disastrous flood at 2010. How high will it go? Also, note that my vision of a powerlaw does not hold up-- these lines are on a log scale (100 ppl, 1k ppl, 10k ppl, 100k ppl, 1mil ppl affected), and linear increases in reported events. * Causes of Floods Floods are complicated. The Singh paper has an even better diagram just for streamflow. What's worse: all of these are changing in time, and each box holds a lot of dynamics. * Glacial Contributions 1. Glaciers are melting, but at different rates, and some are growing. 2. Winter accumulation is increasing, which all melts in the summer. 3. As glaciers retreat, they form lakes. Glacial lake outburst floods can be epicly damaging. Here's Lewis Pugh swimming on Everest, to call attention to global warming. * Floods Differ Why do they differ? * Direct Flood Effects Moving outside of environmental science, a flood is only a problem when you don't want it. It affects society, so the implications go much further. The timing matters too-- the normal flooding time has moved by 30 days. To understand Trickle-Down... * System Linkages This is the other research project that I'm working on with Prof. Mutter this feeds into. What parts of the economy are affected by floods? How will a shock in one sector affect another? How will that change in time? * Outstanding Questions * Some Good References