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The magnitude of future climate change depends substantially on the greenhouse gas emission pathways we choose. Here we explore the implications of the highest and lowest Intergovernmental Panel on Climate Change emissions pathways for climate change and associated impacts in California. Based on climate projections from two state-of-the-art climate models(More)
Executive Summary Introduction This chapter assesses regional climate information from Atmosphere-Ocean General Circulation Models (AOGCMs) and techniques used to enhance regional detail. These techniques have been substantially improved since the IPCC WGI Second Assessment Report (IPCC, 1996) (hereafter SAR) and have become more widely applied. They fall(More)
In the western United States, more than 79 000 km 2 has been converted to irrigated agriculture and urban areas. These changes have the potential to alter surface temperature by modifying the energy budget at the land–atmosphere interface. This study reports the seasonally varying temperature responses of four regional climate models (RCMs) – RSM, RegCM3,(More)
25 Sixteen global general circulation models were used to develop probabilistic projections of 26 temperature (T) and precipitation (P) changes over California by the 2060s. The global models 27 were downscaled with two statistical techniques and three nested dynamical regional climate 28 models, although not all global models were downscaled with all(More)
DISCLAIMER This report was prepared as the result of work sponsored by the California Energy Commission. It does not necessarily represent the views of the Energy Commission, its employees or the State of California. The Energy Commission, the State of California, its employees, contractors and subcontractors make no warrant, express or implied, and assume(More)
ii Acknowledgements The authors wish to acknowledge the following for their contributions to this report: Mimi Sogutlugi (CARB) and Jonathan Taylor (CARB) for running the emission computer model-EMFAC; (CARB) for review of the report; Reza Mahdavi (CARB) for providing economic estimates, and Mary Tyree (UCSD), Martha Coakley (UCSD), and Josh Schriffin(More)
TOPMODEL, a simple physically based conceptual model, has been widely applied to various water resource investigations. Previous studies of the hydraulic transmissivity function with depth indicate that an exponential function alone may not be appropriate. Recent work suggests that a first-order hyperbolic function can provide improved simulations of base(More)
contractors, and subcontractors make no warrant, express or implied, and assume no legal liability for the information in this report; nor does any party represent that the uses of this information will not infringe upon privately owned rights. This report has not been approved or disapproved by the California Energy Commission or Cal/EPA, nor has the(More)