addressing climate change adaptation in regional transportation plans

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Addressing Climate Change Adaptation in Regional Transportation PlansA Guide for California MPOs and RTPAsFigure 3.7Spatial Resolution and Representation of Topographyof a Typical GCM and a Typical RCMSource: National Center for Atmospheric Research (NCAR), 2007.Abrupt Climate ChangeAbrupt climate change is defined as a large-scale change in the climate systemthat takes place over a few decades or less, persists (or is anticipated to persist)for at least a few decades, and causes substantial disruptions in human andnatural systems (CCSP, 2008). Some scientists have referred to our current stateas leading to a climate “tipping point”, or a point when climate changes from astable state to another stable state that disrupts the natural system.Four types of abrupt change in the geologic record stand out as being so rapidand large in their impact that, if they were to recur, they would pose clear risksto society in terms of our ability to adapt:1. Rapid change in glaciers, ice sheets, and hence sea level;2. Widespread and sustained changes to the hydrologic cycle, includingdrought and flooding;3-12 Cambridge Systematics, Inc.
Addressing Climate Change Adaptation in Regional Transportation PlansA Guide for California MPOs and RTPAs3. Abrupt change in ocean circulation patterns, such as the Atlantic MeridionalOverturning Circulation; and4. Rapid release to the atmosphere of methane trapped in permafrost and inocean sediments.One proposed reason for the observed abrupt climate change phenomena is thatfeedback loops within the climate system both enhance small perturbations andcause a variety of stable states (Riall, 2004). These processes that lead to abruptclimate change are poorly understood and are not accounted for in the GCM orRCM projections of climate change.Cambridge Systematics, Inc. 3-13
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appendix b reportState-of-the-Pract
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State-of-the-Practice Climate Chang
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C A L I F O R N I AADAPTATIONPLANNI
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Adaptation Planning Guide - Advisor
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List of Tables (cont’d.)Table 6.
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Climate Impact RegionsThe APG is or
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APGSTART HERE:PLANNING FOR ADAPTIVE
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What are the designated climate imp
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CA Climate Adaptation Planning Guid
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• Selected Demographic Data. Sele
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Cal-Adapt ProjectionsTable 1. Summa
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Selected Infrastructure and Regiona
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illnesses due to air pollution resu
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Additional Resources• Sea level r
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Cal-Adapt ProjectionsTable 5. Summa
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frequency can harm forests. Large i
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Bay Area RegionCounties: Alameda, C
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the Sacramento and San Joaquin rive
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Table 12. Selected Population Data
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Sea level rise is also expected to
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Additional Resources• Public Heal
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Cal-Adapt ProjectionsTable 13. Summ
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Table 16. Selected Population Data
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As with crops, climate change impac
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Additional Resources• Wildfire Re
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elevations, increased static levee
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The ecosystem functions of the Delt
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Setting and HistoryThe California D
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The islands in the lower Bay-Delta
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Some of the questions that should b
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Southern Central Valley RegionCount
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Biophysical CharacteristicsThe west
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The crops produced are varied and i
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Communities in this region should e
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have the resources to prepare for,
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Additional Resources• Sea Level R
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Timber practices have also had ecos
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Southeast Sierra RegionCounties: Al
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Biophysical CharacteristicsThe sout
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ultimately result in reduced water
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particular concern are populations
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Additional Resources• Sea Level R
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industry around Big Bear. As there
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California Natural Resources Agency
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addressing climate change adaptation in regional transportation plans

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