To Connect to Wireless Network

1
To Connect to Wireless Network

• Boot up with wifi enabled, no encryption
• Open browser, go to http//wireless.ucar.edu or
  http//128.117.228.250
• Username amwg2007
• Password amwg2007
• Leave heartbeat window open!

2
Opening thoughts on AMWG meetingPhil Rasch

• Overview of Meeting
• Day 1
• CAM development PBL Shallow Convection,
  Aerosols, Microphysics
• Deep Convection
• Exploring CAM3 behavior
• Day 2
• Exploring CAM3 behavior
• CAM3/CCSM3 in relationship to other Climate
  Models
• Day 3 Morning
• Insights into Dynamical formulations
• Data assimilation
• SciDAC
• Next Steps

3
What is missing from the agenda

• WACCM
• Chemistry
• Cloud fraction, subgrid variability, cloud
  overlap, independent column approximations
• Gravity Wave Drag
• Flow dependent horizontal diffusion (e.g.
  Smagorinsky)
• Microphysics within vigorous convection
• Radiation
• Extra-terrestrial CAM
• New grids/numerical techniques for CAM
• HOMME
• Conservative remapping
• See http//swiki.ucar.edu/cam-dev for
  developments in these areas (contact Andrew
  Gettelman for passwords if you need one)

4
What is happening in other components of CCSM

• Software engineering efforts relevant to the
  development of CCSM
• Subversion repository maturing
• Sequential CCSM development (significant
  refactoring of CAM as first stage. No re-griding
  yet)
• Removed dependencies within CAM assuming
  rectangular lat/lon grids (opens path for cubed
  sphere and triangular grids)
• Coupling Frameworks We plan to exploit two
  frameworks
• Much of the development has been done using MCT
• Nearing complete ESMF capability. Stage 1
  effectively complete. Stage 2 begins.
• Unification of FV core with NASA GEOS-5 modeling
  effort
• Fixed OMEGA (pressure velocity) in CAM
• Much improved regression testing procedures for
  CAM, constantly evolving, exercise new
  functionality
• Database of experiments and control simulations
  (currently most relevant for CCSM rather than
  CAM)
• Tropospheric MOZART/Chem, WACCM, UW Physics,
  Emanuel convection, Offline CAM CGD aerosols on
  development trunk as options
• Massively parallel issues I/O, dynamical core,
  memory (particularly lookup tables in chemistry)

5
What is happening in other components of CCSM
part II

• Exploratory
• Regional Cloud Resolving Model (NRCM, WRF run in
  a channel driven by either analyses or CCSM)
• The path forward
• New land model (revisions to hydrology)
• Chemistry w/aerosols (simple and more complex)
• More Biogeochemistry
• (Carbon, Nitrogen cycles)
• C4MIP -gt C-LAMP(compare CASA, CN, IBIS w/in
  SciDAC)
• Substantially revised ocean model (POP-2 code,
  vertical resolution, horizontal viscosity, GM
  modifications, new advection)
• New Sea Ice Model (CSIM -gt CICE4, ridging,
  albedo, meltponds)

6
Interim model (CCSM3.5)

• Will combine all model component improvements
  available as of about 1 March, 2007
• Goal to allow exploration of Carbon Cycle early
  in the evolution of CCSM4 (spinups of as much as
  a thousand years are necessary to equilibrate
  biogeochemical models)
• Strategy is starting to evolve to produce
  controls for the CC experiments
• Balance CCSM at TOA at 1870 conditions
• Run model forward in time with transient forcing,
  look at present day simulation to make sure it
  looks like todays planet earth.
• Iterate until physical system acceptable
• Start BGC simulations with CCSM 3.5
• Improvements continue within components at least
  until early 2008 (phase II)
• In 2008 we put models together again and start
  phase III test, finalize, and thoroughly
  understand the CCSM4 that includes the new
  physical components, the final carbon cycle
  component, aerosol indirect effects, and the new
  land ice component. Includes obtaining the very
  long spinups required for the biogeochemistry and
  land ice components, and determining the final
  parameter settings for the CCSM, such as the sea
  ice albedos, etc.
• Goal is to have a model we have some confidence
  in by early 2009.

7
Questions for AMWG

• Are we missing a discussion of important things
  that should be considered for CAM itself (e.g.
  resolution issues)
• Can we leverage our current efforts to move
  faster in improving CAM?
• What metrics should we be focussing upon?
• Do we want a social outing this evening?
• Pub (bottom of hill)
• Tandoori Grill (bottom of hill)
• The Med (downtown)
• Open Discussion / Questions?