Northrop Grumman PRIVATE / PROPRIETARY Presentation to: 2009 NARCCAP Users’ Meeting Glenn Higgins Atmospheric Sciences & Engineering Department Northrop.

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Presentation transcript:

Northrop Grumman PRIVATE / PROPRIETARY Presentation to: 2009 NARCCAP Users’ Meeting Glenn Higgins Atmospheric Sciences & Engineering Department Northrop Grumman 11 September 2009

Northrop Grumman PRIVATE / PROPRIETARY 2 Introduction IPCC reports have focused considerable attention on climate change and global and regional climate modeling However, there is a gap between the science products that climate models produce and the “engineering” products that planners need to: –Support mitigation and adaptation efforts at local and regional levels Today I will discuss NG’s strategy and efforts to bridge the gap: –Through Regional Climate (downscaling) and Decision Aid modeling Decision Aids translate scientific products from climate models to engineering products for local and regional planners We have used NARCCAP data to develop example decision aid products in or to engage with potential users- some examples to follow

Northrop Grumman PRIVATE / PROPRIETARY 3 Climate Modeling and Decision Aids Global Observing System Global Climate Models Regional Climate Models Decision Aids UsersUsers Observations, Best Science, and Physical Models Raw Global-scale model results Regional Downscaling Captures local effects and better physics High resolution regional model results Empirical and explicit decision domain modeling Actionable decision aid

Northrop Grumman PRIVATE / PROPRIETARY 4 Some Examples of Climate Products and Decision Aids

Northrop Grumman PRIVATE / PROPRIETARY 5 Some Examples Climate Products and Decision Aids Annual Temperatures for Several Cities At most sites, temp increases throughout the current and future periods, although the rate of increase is much higher in the future period Biases are evident at some sites and vary by season Lynchburg Reagan National Roanoke Richmond Norfolk Washington, Dulles Cape Hatteras Plots below show the mean annual temperature over each site NARCCAP data from GFDL and CRCM

Northrop Grumman PRIVATE / PROPRIETARY 6 Some Examples Climate Products and Decision Aids Agriculture: VA Growing Season Bias corrected by monthDays in Growing Season CurrentFuture Richmond Lynchburg Roanoke Washington DC Norfolk Use: Agricultural planning, crop selection and rotation, trends in food sources

Northrop Grumman PRIVATE / PROPRIETARY 7 Some Examples Climate Products and Decision Aids Health: VA Heat Index Bias corrected by month Use: City planning, emergency planning, public facility planning, HVAC planning

Northrop Grumman PRIVATE / PROPRIETARY 8 Some Examples Climate Products and Decision Aids Energy: VA Cooling Degree Days and Energy Demand Bias corrected by month Use: Strategic energy planning, future energy demand, power plant needs, alterative power sources

Northrop Grumman PRIVATE / PROPRIETARY 9 Summary Northrop Grumman is reaching out to regional and local planners in order to understand user needs for climate information The combination of global and regional climate models and user-oriented decision aids can provide critical information to planners Using past climatic data as a surrogate for future planning is not consistent with IPCC projections Although climate models have weaknesses, they are improving and offer the best guidance for planning today Running multiple simulations with multiple climate models creates a range of solutions and permits probabilistic estimates Interaction with users is critical to optimally tailoring decision aid development and making best use of climate data NARCCAP data have helped us develop example decision aid products and understand issues with the data, such as biases and differences among models

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