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 12.1 Developing Adaptation StrategiesSHORT LIST OFPRIORITIZED RISKSCLIMATESTRESSORDATADETERMINECLIMATE HAZARDPROTECTIONWINDOWSIDENTIFY POTENTIALCLIMATE CONSEQUENCESANDMAGNITUDESEVALUATE ANDPRIORITIZEADAPTATIONSTRATEGIESPRIORITIZEADAPTATIONSTRATEGIES FORINCLUSION IN RTPMONITOR &EVALUATEASSET LIFESPANASSET RENEWALCYCLEDETERMINEEXPECTEDOUTCOMESNO IMPACTIDENTIFYPOTENTIALADAPTATIONSTRATEGIESSTRESSOROCCURRENCETIMEFRAMEDISRUPTIONDETERIORATESELECT ANDEVALUATEADAPTATIONSTRATEGIESDAMAGEQUALITATIVEEVALUATIONBENEFIT‐COSTBASEDEVALUATIONSource: Cambridge Systematics, Inc., 2012.12-2 Cambridge Systematics, Inc.
Addressing Climate Change Adaptation in Regional Transportation PlansA Guide for California MPOs and RTPAs12.2 DEVELOPING ADAPTATION STRATEGIESDetermine Climate Hazard Protection WindowsA limited selection of priority asset/stressor groupings are advanced from therapid assessment described in Module 3 for more rigorous and detailedconsideration in Module 4. At this stage, it is understood that the assetsthemselves are considered critical, often highly critical, and therefore that thepotential consequences of exposure to climate stressors could be significant. It isalso understood that these assets have a substantial future likelihood, perhaps ahigh likelihood, of exposure to one or more climate stressors at thresholds thatmay pose a threat.However, the rapid assessment’s focus is on whether assets and stressorscoincide physically, without necessarily 22 considering temporal concurrence(they overlap in space, but do they overlap in time as well?) or changes in thecondition or characteristics of assets over time. The Climate Hazard ProtectionWindow concept was developed help capture the role of time in determiningexposure. The Window describes the period during which an asset is likely bothto be in service and susceptible to the impacts of one or more climate stressors.The Window opens when a climate hazard first poses significant risk to the assetand closes at the projected end of the asset’s lifespan (with multiple stressorexposures there may be multiple Windows). Understanding of two keytimeframes is therefore necessary to produce a Window (these are described ingreater depth, below):Asset Lifespan and Asset Renewal Cycles. When is the asset due forreplacement? What opportunities for adaptation action might coincide withstandard asset renewal cycles? Advanced assessments may also explore theinteraction between deteriorating asset condition and increased susceptibilityto stressors.Stressor Occurrence. When are stressors likely to begin posing significantrisks to assets due increasing severity (such as exceedance of a hazardthreshold) or frequency? In some instances, the answer may be “today.”22 The previous exposure assessment may include time as an element as well. Forexample, the asset inventory may include future projects from the TIP or LRTP.Hypothetically, where sufficient attribute data is available, even changes in assetcondition based on deterioration curves or asset renewal cycles could be incorporated.Cambridge Systematics, Inc. 12-3
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Addressing Climate Change Adaptatio
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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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