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Short-term variations of three rock glaciers and their relationship with meteorological conditions
(2015)Earth Surface Dynamics DiscussionsIn recent years, strong variations in the speed of rock glaciers have been detected,raising questions about their stability in a changed climate. In this study, we present continuous time series over three years of surface velocities of six GPS stations located on three rock glaciers in Switzerland. Intra-annual velocity variations are analyzed in relation to local meteorological factors, such as precipitation, snow(melt), as well as air ...Working Paper -
Differential climate impacts for policy-relevant limits to global warming: the case of 1.5° C and 2° C
(2015)Earth System Dynamics DiscussionsRobust appraisals of climate impacts at different levels of global-mean temperature increase are vital to guide assessments of dangerous anthropogenic interference with the climate system. Currently, two such levels are discussed in the context of the international climate negotiations as long-term global temperature goals: a below 2◦C and a 1.5◦C limit in global-mean temperature rise above ...Working Paper -
Optimal Rebalancing Frequencies for Multidimensional Portfolios
(2015)Swiss Finance Institute Research PaperWe study optimal investment with multiple assets in the presence of small proportional transaction costs. Rather than computing an asymptotically optimal no-trade region, we optimize over suitable trading frequencies. We derive explicit formulas for these and the associated welfare losses due to small transaction costs in a general, multidimensional diffusion setting, and compare their performance to a number of alternatives using Monte ...Working Paper -
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