20th and 21st century climate projections for the Pacific Northwest based on a subset of the 2007 IPCC AR4 models

For more comprehensive data sets, please contact the CIG.

Summary data for the 20th century, 2020s, 2040s, and 2080s are available for download in the following Excel spreadsheets. Seasons are classified as follows: fall = Sept, Oct, Nov; winter = Dec, Jan, Feb; spring = March, April, May; summer = June, July, Aug.

20th Century

  • 20th century simulations by season - This set of data and graphs compares seasonal simulations of 20th century PNW temperature and precipitation with observed temperature and precipitation. Simulation results are shown for individual global climate models and the average of all models. This information is helpful for understanding how well individual models simulate past climate and what biases may exist in individual models (e.g., whether a specific model tends to be warmer or cooler than observed conditions).

2020s

  • 2020s annual projections - This set of data and graphs shows projected annual change in PNW temperature and precipitation for the decade of the 2020s. Results for each emissions scenario (B1 and A1B) are shown for individual global climate models and the average of all models. Results are also show for the average of the two emissions scenarios.
  • 2020s projections by season - Same as above except results are provided at a seasonal (winter, spring, summer fall) time step.

2040s

  • 2040s annual projections - This set of data and graphs shows projected annual change in PNW temperature and precipitation for the decade of the 2040s. Results for each emissions scenario (B1 and A1B) are shown for individual global climate models and the average of all models. Results are also show for the average of the two emissions scenarios.
  • 2040s projections by season - This set of data and graphs shows projected seasonal changes in 2040s PNW temperature and precipitation for the B1 and A1B scenarios. Results for each emissions scenario are shown for individual global climate models and the average of all models.

2080s

  • 2080s annual projections - This set of data and graphs shows projected annual change in PNW temperature and precipitation for the decade of the 2080s. Results for each emissions scenario (B1 and A1B) are shown for individual global climate models and the average of all models. Results are also show for the average of the two emissions scenarios.
  • 2080s projections by season - This set of data and graphs shows projected seasonal changes in 2080s PNW temperature and precipitation for the B1 and A1B scenarios. Results for each emissions scenario are shown for individual global climate models and the average of all models.

Consolidated Tables

 

August 1, 2008