Research

Integrated Assessment: Current Research

The Washington Climate Change Impacts Assessment

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Overview

In July 2007, the Climate Impacts Group (CIG) launched an unprecedented assessment of climate change impacts on Washington State. The Washington Climate Change Impacts Assessment (WACCIA) involved developing updated climate change scenarios for Washington State and using these scenarios to assess the impacts of climate change on the following sectors:

Adaptation in each of these sectors was also discussed. Research partners included Washington State University and Pacific Northwest National Laboratory. The assessment was funded by the Washington State Legislature through House Bill 1303.

Key Findings

Key findings from the WACCIA include the following:

The WACCIA Report

Final copies of the Washington Climate Change Impacts Assessment chapters are available below for download. Washington Assessment chapters have also been published in a special issue of the journal Climatic Change. Links to the abstracts for those papers are provided below.

Sector Chapter
(full report - large file!) The Washington Climate Change Impacts Assessment: Evaluating Washington’s Future in a Changing Climate
(Climate Impacts Group 2009)
(414 pages; 138 MB)
(overview) Executive Summary (14.5 MB; updated from earlier versions, June 3, 2009)
Scenarios Chapter 1 - Future Climate in the Pacific Northwest (Mote and Salathé 2009) (11 MB)
Regional Climate Modeling Chapter 2 - Regional Climate Modeling (Salathé et al. 2009) (17 MB)
Water

Chapter 3 (in three parts)

Implications of 21st Century Climate Change for the Hydrology of Washington State (Elsner et al. 2009) (20.8 MB)

Climate Change Impacts on Water Management in the
Puget Sound Region, Washington, USA
(Vano et al. 2009a) (7.2 MB)

Climate Change Impacts on Water Management and Irrigated Agriculture in the Yakima River Basin, Washington, USA (Vano et al. 2009b) (10.8 MB)

Energy Chapter 4 - Effects of Projected Climate Change on Energy Supply and Demand in the Pacific Northwest and Washington State (Hamlet 2009) (8.9 MB)
Agriculture Chapter 5 - Assessment of Climate Change Impact on Eastern Washington Agriculture (Stöckle et al. 2009) (3.3 MB)
Salmon Chapter 6 - Impacts of Climate Change on Key Aspects of Freshwater Salmon Habitat in Washington State (Mantua et al. 2009) (7.3 MB)
Forests Chapter 7 - Forest Ecosystems, Disturbances, and Climatic Change in Washington State, USA (Littell et al. 2009) (10.1 MB)
Coasts Chapter 8 - Impacts of Climate Change on the Coasts of Washington State (Huppert et al. 2009) (9.2 MB)
Urban Stormwater Infrastructure Chapter 9 - Precipitation Extremes and the Impacts of Climate Change on Stormwater Infrastructure in Washington State (Rosenberg et al. 2009) (13.7 MB)
Human Health Chapter 10 - Public Health Impacts of Climate Change in Washington State: Projected Mortality Risks Due to Heat Events and Air Pollution (Jackson et al. 2009) (5.8 MB)
Adaptation Chapter 11 - Preparing for Climate Change in Washington State (Whitely Binder et al. 2009) (1 MB)

The WACCIA Conference

On February 12, 2009, the CIG hosted a one day conference on the results of the Washington Climate Change Impacts Assessment. The conference brought approximately 600 people together to learn about and discuss the implications of the Assessment's findings. Presentations and other materials from the conference are available on the WACCIA conference website.