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CESM WG co-chair meeting. March 4 2014. Recent WG co-chair changes. Paleo Charles Jackson (U. Texas) in replacement of F. Joos Polar Nicole Jeffery (LANL) in replacement of E. Hunke Chemistry-Climate Louisa Emmons (NCAR) in replacement of me. Announcements/Updates. CSL Usage: - PowerPoint PPT Presentation
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CESM WG co-chair meeting
March 4 2014
Recent WG co-chair changes
• Paleo Charles Jackson (U. Texas) in replacement of F. Joos
• PolarNicole Jeffery (LANL) in replacement of E. Hunke
• Chemistry-Climate Louisa Emmons (NCAR) in replacement of me
Announcements/Updates
CSL Usage:Development: 71%/120% for 30/90 day (150%/133% cut off)Production: 172%/179% for 30/90 day (220%/190% cut off)
Other updates/announcements?
LMWG/BGCWG/SDWG meeting updates
Glade usage:/glade/p/cesm 222.34 TB (240.00 TB) 92.64 % /glade/p/cesm0005 356.91 TB (400.00 TB) 89.23 %
Release updates?
CLM Development Timelines: The path towards CLM5/CESM2
1/2014 1/2015 CAM5+
6/2016CESM2
Hydro: New soil evap, BTRAN, can turb parameterization
test/eval
CLM(ED) v0 to trunk
Biog
eohy
sBi
ogeo
chem
CAM5-CLM4.5BGC eval/tuning
CLM5 model in CESM2(CAM5+)
for CMIP6
CLM5 BGC eval/tune (fire, CH4,
flood, dust, ???)
Soil vert res incr?
6/2015CESM1.3
6/2014 1/2016
Coup
led
mod
el /
capa
biliti
es
Dynamic landunits
Fully coupled BGC eval/tune of CLM5 and/or
CAM5+
CLM(ED) v1/2 w/ harvest, soil bgc, N?
MOSART decision/
implementation
Benchmark system
Anom forcing, CO2 datm
Restart regrid online
Hydro refact
Interann LAI SP
N-comp refact
Snow: veg interact, vert abs
N-comp test/eval
180, reactive trans
DGVM(or ED)/crop DynLand test
Stress-decid phenology
CLM5 control sims (BGC-crop, SP, ED?)
Urban update
Global crops, manure, fert
CLM5(ED) ready for coupled sims
1/2017?
RTM Flood/wetlnd full
implement
Dynamic Landunits: Current Status
GlacierArea
NaturalVeg.Area
Year 1 Year 2 Year 3 Year 4 Year 5
% of grid cell
Fast deglaciation experiment: 100% to 0% in 5 years
Albedo (fraction)
No-snowAlbedo
BGC Updates from OMWG Meeting
• Joint efforts between OMWG & BGCWG to resolve issues w/ Southern Ocean ventilation
• Enhanced isopycnal mixing improves OMZ biases, and improves CFCs. Anistropic GM could help and seems appropriate.
• Fast BGC spinup working for 14C, still in progress for full ecosystem model
• Work on including impact of ocean acidification on BGC processes is progressing
Intended for CESM 2.0, timelines TBDTarget Date Development Key Developers Involved WGs
Ecosys software engineering enhancements K Lindsay, A Jahn
Updated treatment of PAR handling N Norton, K Lindsay PCWG
DOM updates K Moore
IRF for offline models & NK spinup K Lindsay
Optional Phaeocystis S Wang
Coupling to Atm Chem (CH4, DMS, NH) M Maltrud, NH TBD ChemWG
C Isotpoes (coupled and uncoupled) A Jahn AMWG, PCWG, LMWG
Coupled H2O Isotopes E Brady AMWG, PCWG, LMWG
Iron in Sea-Ice S Wang PCWG
Couple to skeletal Sea-Ice BGC N Jeffery PCWG
Ocean Acidification Feedbacks S Wang
Uncoupled N Isotopes S Yang
Well Mixed Atm CO2 Box TBD
potential for CESM 2.0, timelines TBDTarget Date Development Key Developer Involved WGs
Make BGC core independent of GCM TBD
Temporal treatment of PAR TBD
Explicit Calcifier Functional Group K Lindsay
Spatially varying iron ligand K Misumi
Coupled riverine inputs C Nevison LMWG
N20 emissions TBD ChemWG
Couple to depth resolved Sea-Ice BGC N Jeffery PCWG
BGC Developments for CESM2
• All developers that have been queried think their update can be ready in time (early 2015)
• Merging and testing all intended code might be infeasible
• Coupling BGC to AtmChem is priority of SSC, but no one is doing the work
• Coupling land and ocean BGC via rivers is frequently requested, but no one is doing the work
SDWG update
• CESM-IAM linkage code: iESM proceeding but no hard timeline; THESIS project under way
• Plan session at Breckenridge on CMIP6 (follow up to last year’s session), particularly on ScenarioMIP, LUMIP (and AerChemMIP?)
• Needs/wish list for CESM developments, outputs, diagnostics, etc. to be formally communicated to other WGs
• Re-orientation of WG agreed to (see following slides)
Proposal #1: SDWG focus
Adopt broader focus:
Improve the use of CESM, other ESMs, or their emulators in research on mitigation, adaptation, and impacts
Rather than:
“a focus on interactions between CESM and two research and user communities: integrated assessment modeling and water management”
Proposal #2: FunctionsIdentify, and communicate to other WGs, needs for CESM from IAM/IAV perspective model simulations output variables
model improvements downscaling, bias correction
model diagnostics model emulation
Produce prioritized list of CESM simulations, and carry them out with SDWG allocation (next proposal: August)
CESM linkages to human systemsGatekeeper for CESM linkage code
Repository of/guide to human system variables that appear in CESM
Proposal #3: Meeting format/content
TalksSubmitted abstracts on any human dimensions work relevant to WG functions
Reports on ongoing projects of broader relevance to group (iESM, THESIS, Water diagnostics EaSM, etc.)
Reports on other projects that could benefit from SDWG involvement or that could inform WG functions (CIRA, LAMP, BRACE, LUC4C, etc.)
DiscussionsNeeds for CESM simulations, developments, diagnostics, etc.
Contributions to other projects
Input to community processes (CMIP, other MIPs, IAMC, …?)
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