@article{RybskiDawsonKropp2020, author = {Rybski, Diego and Dawson, Richard J. and Kropp, J{\"u}rgen}, title = {Comparing generic and case study damage functions}, series = {Natural hazards review}, volume = {21}, journal = {Natural hazards review}, number = {1}, publisher = {American Society of Civil Engineers}, address = {Reston}, issn = {1527-6988}, doi = {10.1061/(ASCE)NH.1527-6996.0000336}, pages = {6}, year = {2020}, abstract = {Two different approaches are used to assess the impacts associated with natural hazards and climate change in cities. A bottom-up approach uses high resolution data on constituent assets within the urban area. In contrast, a top-down approach uses less detailed information but is consequently more readily transferable. Here, we compare damage curves generated by each approach for coastal flooding in London. To compare them, we fit a log-logistic regression with three parameters to the calculated damage curves. We find that the functions are remarkably similar in their shape, albeit with different inflection points and a maximum damage that differs by 13\%-25\%. If rescaled, the curves agree almost exactly, which enables damage assessment to be undertaken following the calculation of the three parameters.}, language = {en} } @article{PradhanKriewaldCostaetal.2020, author = {Pradhan, Prajal and Kriewald, Steffen and Costa, Lu{\´i}s F{\´i}l{\´i}pe Carvalho da and Rybski, Diego and Benton, Tim G. and Fischer, G{\"u}nther and Kropp, J{\"u}rgen}, title = {Urban food systems: how regionalization can contribute to climate change mitigation}, series = {Environmental science \& technology}, volume = {54}, journal = {Environmental science \& technology}, number = {17}, publisher = {American Chemical Society}, address = {Washington}, issn = {0013-936X}, doi = {10.1021/acs.est.0c02739}, pages = {10551 -- 10560}, year = {2020}, abstract = {Cities will play a key role in the grand challenge of nourishing a growing global population, because, due to their population density, they set the demand. To ensure that food systems are sustainable, as well as nourishing, one solution often suggested is to shorten their supply chains toward a regional rather than a global basis. While such regional systems may have a range of costs and benefits, we investigate the mitigation potential of regionalized urban food systems by examining the greenhouse gas emissions associated with food transport. Using data on food consumption for 7108 urban administrative units (UAUs), we simulate total transport emissions for both regionalized and globalized supply chains. In regionalized systems, the UAUs' demands are fulfilled by peripheral food production, whereas to simulate global supply chains, food demand is met from an international pool (where the origin can be any location globally). We estimate that regionalized systems could reduce current emissions from food transport. However, because longer supply chains benefit from maximizing comparative advantage, this emission reduction would require closing yield gaps, reducing food waste, shifting toward diversified farming, and consuming seasonal produce. Regionalization of food systems will be an essential component to limit global warming to well below 2 degrees C in the future.}, language = {en} }