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US Army Corps of Engineers BUILDING STRONG ® Climate Change and Navigation: EnviCom TG3 Presented by: Kate White, PhD, PE USACE Institute for Water Resources.

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Presentation on theme: "US Army Corps of Engineers BUILDING STRONG ® Climate Change and Navigation: EnviCom TG3 Presented by: Kate White, PhD, PE USACE Institute for Water Resources."— Presentation transcript:

1 US Army Corps of Engineers BUILDING STRONG ® Climate Change and Navigation: EnviCom TG3 Presented by: Kate White, PhD, PE USACE Institute for Water Resources Chair, PIANC EnviCom Permanent Task Group on Climate Change Navigating the Environment: Managing Risks and Sustaining the Environment New Orleans 28 October 2009

2 Observed Climate Change

3 BUILDING STRONG ® Projected Climate Change

4 Climate Change Commitment

5 BUILDING STRONG ® PIANC and Climate Change PIANC is the global organization providing guidance for sustainable waterborne transport, ports and waterways It is time to act Significant changes in climate and their impacts are visible regionally, and are expected to become more pronounced in the next decades Changes in the water balance and the discharge of rivers bring pressure on the reliability of inland navigation in the future Changing ice conditions bring new perspectives for marine/polar navigation Every infrastructure project has to deal already today with the possible impact of climate change The European Commission recently developed the concept of climateproofing, Defined as Ensuring the sustainability of investments over their entire lifetime, taking explicit account of a changing climate. This may become an important driver in all future planning processes

6 BUILDING STRONG ® PIANC and Climate Change First step: Task Group 3 Mandate: Review of climate change drivers, impacts, responses and mitigation for navigation sector Started in March 2007 and finished in April 2008 Members represent a broad cross-section of disciplines: climate change specialists (meteorologists and forecasters), hydrology experts (water balance and discharge specialists), oceanographers, hydraulic engineers in the field of maritime and inland navigation Countries: Germany, United Kingdom, USA, France, Norway Corresponding: Belgium, Spain, Australia, Japan, South Africa Second step: EnviCom Permanent Task Group on Climate Change Kickoff October 2009 Terms of Reference

7 BUILDING STRONG ® PIANC TG3 Strategy Review of existing literature : Create a common ground within PIANC Identify areas where PIANC should develop technical guidance about climate change for the navigation sector Communicate that PIANC has recognized the challenges of climate change Climate mitigation How can the navigation sector contribute to the reduction of greenhouse gas emissions? Climate adaption How will the navigation sector be affected and what adaptation strategies and measures are necessary?

8 BUILDING STRONG ® TG 3 Report Printed May 2008: Waterborne transport, ports and waterways: A review of climate change drivers, impacts, responses and mitigation Chairman: Dr. Hans Moser, Federal Institute of Hydrology, Koblenz, Germany Secretary: Dr. Peter Hawkes, Hydraulic Research, Wallingford, UK

9 BUILDING STRONG ® TG 3 Report 1.Identification of the relevance of climate change for maritime and inland navigation 2.Summary of the realistic impact scenarios (e.g. environmental, technical, economic, political) by documenting the existing uncertainties with the use of climate models. The report shows potential impacts on navigation, distinguishing between maritime and inland navigation 3.Summary of examples where climate change already creates problems for navigation 4.Discussion on mitigation: how the navigation sector could contribute to reduce climate change impacts (e.g. reduction of CO2 emissions and alternative fuel concepts) and support navigation as an environmentally sound and sustainable mode of transportation 5.Discussion of adaptation: assessing climate impacts and responses to prepare the navigation sector for the projected climate scenarios with the aim of adapting navigation infrastructure, equipment and daily practice for future sustainability

10 BUILDING STRONG ® TG3: Dealing with uncertainty

11 BUILDING STRONG ® TG3: Dealing with uncertainty

12 Maritime Navigation Drivers Increase in power and reach of storm surge, coastal flooding, spray zone and erosion patterns Change in magnitude and duration of storm surges and incidents of water over sea wall structures Wave attack at a higher water level reducing the energy loss of breaking Changes in frequency, duration and intensity of storms Change in the sea level range (and other sea state parameters) Ice and icing Potential Impacts Changed dredging requirements Low land flooding Increased vulnerability/degradation of structures Permanent loss of sand offshore and onshore Less viable industrial land to enlarge ports Retreat of coastal landscapes Problems in maneuvering Reduced capacity of natural systems to recover Access to Polar Regions (NW and NE Passages open all year) Potentially more ice at river outlets in the north Potential northward relocation of fish

13 Inland Navigation

14 Trends and projections for extreme climatological and hydrological events (after Table SPM.2, IPCC, 2007d) Phenomenon and direction of trend Likelihood that the trend occurred in the late 20 th century (typically post 1960) Likelihood of future trends based on projections for 21 st century using SRES scenarios Relevance to navigation Warmer and fewer cold days and nights over most land areas Very Likely (decreased frequency of coldest days and nights, coldest 10 %) Virtually certain (warming of the most extreme days and nights each year) Form of precipitation (snow/rain); presence or absence of ice Warmer and more frequent hot nights over most land areas Very Likely (increased frequency of hot days and nights, hottest 10 %) Virtually certain (warming of the most extreme days and nights each year) Associated with drought Warm spells/heat waves. Frequency increases over most land areas LikelyVery Likely Associated with drought Area affected by droughts increases Likely in many regions since the 1970s Likely Associated with droughts Heavy precipitation events. Frequency (or proportion of total rainfall from heavy falls) increases over most areas LikelyVery Likely Associated with floods

15 BUILDING STRONG ® Predicted changes in precipitation (in percent) for the period 2090– 2099, relative to 1980–1999, for December to February (left) and June to August (right); white areas are where less than 66 % of the models agree in the sign of the change and stippled areas are where more than 90 % of the models agree in the sign of the change (reproduced from IPCC, Meehl et al., 2007, AR4 WG1, Figure 10.9)

16 A1B simulations: (top row) annual mean, DJF and JJA fractional change in precipitation from to , averaged over 21 models; (bottom row) number of models out of 21 that project increases in precipitation (after IPCC, 2007d, Figure 11.12), superimposed over map of navigation from DOT freight analysis

17 BUILDING STRONG ® Tows delayed during ice conditions, Melvin Price Locks and Dam, Mississippi River, February 2007; ice build up in the lock caused one tow to become stuck, temporarily shutting down the lock; later, width restrictions were implemented

18 BUILDING STRONG ® TG3 Conclusions The navigation sector could contribute to a reduction in GHG emissions by improving efficiency, employing alternative fuels, and emphasizing navigation as an environmentally-sound mode of transportation Climate change adaptation alternatives are less well-studied, and often depend on local governmental requirements; the navigation industry can institute proactive management and planning in an effort to speed navigation-related climate change adaptation measures and reduce vulnerabilities Ideally, the navigation community will employ adaptive planning, operational, and infrastructure decision-making that take into account natural and social system features and the impacts of incremental changes over time. A comprehensive systems approach that allows continuous upgrades as new knowledge emerges and new engineering practices are developed will support satisfactory system safety and performance under the dynamic conditions and in the face of nonlinear processes associated with climate change

19 PTG CC Objectives Provide a common and basic platform for all PIANC commissions to build up their work plans regarding climate change ID relevant aspects of climate change for maritime and inland navigation Summarize where and how climate change and natural variability impact the navigation sector, including knowledge and technology gaps to drive future scientific research Provide information related to climate change adaptation for the navigation sector Information related to climate change mitigation potential (focus on inland navigation mitigation measures) Develop guidance on how PIANC should deal with climate change in detail in the future (roadmap) Knowledge management and technology transfer related to climate change between PIANC Commissions, and between PIANC and other organisations devoted to navigation, waterways, and port infrastructure, as well as other stakeholders

20 BUILDING STRONG ® PTG CC


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