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Emissions pathways, climate change, and impacts on California by Katharine Hayhoe; Daniel Cayan; Christopher B. Field; Peter C. Frumhoff; Edwin P. Maurer; Norman L. Miller; Susanne C. Moser; Stephen H. Schneider; Kimberly Nicholas Cahill; Elsa E. Cleland; Larry Dale; Ray Drapek; R. Michael Hanemann; Laurence S. Kalkstein; James Lenihan; Claire K. Lunch; Ronald P. Neilson; Scott C. Sheridan; Julia H. Verville is a nonfiction available to read on EtoBox.

What is Emissions pathways, climate change, and impacts on California about?

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 with low and medium sensitivity (Parallel Climate Model and Hadley Centre Climate Model, version 3, respectively), we find that annual temperature increases nearly double from the lower B1 to the higher A1fi emissions scenario before 2100. Three of four simulations also show greater increases in summer temperatures as compared with winter. Extreme heat and the associated impacts on a range of temperature-sensitive sectors are substantially greater under the higher emissions scenario, with some interscenario differences apparent before midcentury. By the end of the century under the B1 scenario, heatwaves and extreme heat in Los Angeles quadruple in frequency while heat-related mortality increases two to three times; alpine/subalpine forests are reduced by 50–75%; and Sierra snowpack is reduced 30–70%. Under A1fi, heatwaves in Los

Who reads Emissions pathways, climate change, and impacts on California?

Author

Katharine Hayhoe; Daniel Cayan; Christopher B. Field; Peter C. Frumhoff; Edwin P. Maurer; Norman L. Miller; Susanne C. Moser; Stephen H. Schneider; Kimberly Nicholas Cahill; Elsa E. Cleland; Larry Dale; Ray Drapek; R. Michael Hanemann; Laurence S. Kalkstein; James Lenihan; Claire K. Lunch; Ronald P. Neilson; Scott C. Sheridan; Julia H. Verville

Publisher

Proceedings of the National Academy of Sciences

Published

2004

Language

EN

Category

nonfiction

Subjects

Science, Stem