Difference between revisions of "GEOS-Chem model development priorities"

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|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
 
|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
 
|Rynda Hudman (UC Berkeley)<br>Neil Moore (Dalhousie)
 
|Rynda Hudman (UC Berkeley)<br>Neil Moore (Dalhousie)
|Bram Massakers (Eindhoven) is visiting Harvard for Summer 2012 in order to integrate the new soil NOx emissions into the standard GEOS-Chem code.  This will be added into the standard code in the release that immediately follows [[GEOS-Chem v9-01-03|v9-01-03]].
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|Bram Maasakkers (Eindhoven) is visiting Harvard for Summer 2012 in order to integrate the new soil NOx emissions into the standard GEOS-Chem code.  This will be added into the standard code in the release that immediately follows [[GEOS-Chem v9-01-03|v9-01-03]].
 
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|Methyl peroxy nitrate (MPN) chemistry
 
|Methyl peroxy nitrate (MPN) chemistry

Revision as of 21:11, 20 June 2012

On this page we list the current priorities for GEOS-Chem development. This list was compiled by the user Working Groups at the last International GEOS-Chem Meeting (IGC5) in May 2011 and has been continuously updated since based on code readiness and input from the Working Groups and the Steering Committee.

List of priorities as of May 2012

Items "Awaiting release" will be part of the next version release of GEOS-Chem and are actively being incorporated into the standard model and benchmarked. Other items are in different stages of readiness and will be included in future versions of the model.

Awaiting release

Item Author(s) Status
Improved acetone simulation Emily Fischer (Harvard) Approved 14 Dec 2011 (v9-01-03b); awaiting release
Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA Dylan Millet (U. Minnesota) Approved 14 Dec 2011 (v9-01-03b); awaiting release
OVOC's dry deposition Jingqiu Mao (NOAA/GFDL) Approved 19 Dec 2011 (v9-01-03c); awaiting release
Improved sea salt emission & deposition Lyatt Jaeglé (U. Washington) Approved 12 Jan 2012 (v9-01-03d); awaiting release
Dust submicron size distribution for optics David Ridley (Colo. State) Approved 12 Jan 2012 (v9-01-03d); awaiting release
Improved snow scavenging and washout parameterization Qiaoqiao Wang (Harvard) Approved 02 Feb 2012 (v9-01-03e); awaiting release
PARANOX ship plume emissions Geert Vinken (Eindhoven) Approved 17 Feb 2012 (v9-01-03f); awaiting release
Hg(II) gas-aerosol partitioning Helen Amos (Harvard) Approved 09 Mar 2012 (v9-01-03h); awaiting release
Nested-grid CO2 simulation Yuxuan Wang (Tsinghua U.) Approved 09 Mar 2012 (v9-01-03h); awaiting release
Historical emission inventories of SO2, NOx, BC, and POA Eric Leibensperger (MIT) Approved 09 Mar 2012 (v9-01-03h); awaiting release
Replace RETRO C2H6 emissions with emissions from the offline C2H6 simulation Yaping Xiao (UNH) Approved 26 Mar 2012 (v9-01-03i); awaiting release
Replace existing regridding routines with the MAP_A2A regridding package Matt Cooper (Dalhousie) Approved 27 Apr 2012 (v9-01-03k); awaiting release
Daily and 3-hourly GFED3 biomass emissions Prasad Kasibhatla (Duke) Approved 18 May 2012 (v9-01-03l); awaiting release
Tropospheric bromine chemistry Justin Parrella (Harvard) Approved 06 Jun 2012 (v9-01-03m); awaiting release
Satellite-based NOx emission trends Lok Lamsal (NASA GSFC) Approved 08 Jun 2012 (v9-01-03n); awaiting release
Stratospheric P and k (monthly climatological) Lee Murray (Harvard) Code is ready (awaiting delivery to GCST); slated for v9-01-03o

--Melissa Payer 10:44, 7 June 2012 (EDT)

Ready to go in

Item Author(s) Status
Expanded SOA Havala Pye (EPA/ORD) Delivered to GCST, awaiting implementation
Inorganic chemistry updates Mat Evans (York) Delivered to GCST, awaiting implementation
New soil NOx emission module Rynda Hudman (UC Berkeley)
Neil Moore (Dalhousie)
Bram Maasakkers (Eindhoven) is visiting Harvard for Summer 2012 in order to integrate the new soil NOx emissions into the standard GEOS-Chem code. This will be added into the standard code in the release that immediately follows v9-01-03.
Methyl peroxy nitrate (MPN) chemistry Ellie Browne (UC Berkeley) Delivered to GCST, awaiting implementation
Acid uptake on dust aerosols T. Duncan Fairlie (NASA/LARC) Delivered to GCST, awaiting implementation
Cloudwater pH for sulfate formation Becky Alexander (U. Washington) Delivered to GCST, awaiting implementation
EPA/NEI2005 Hg emissions for US Lyatt Jaeglé (U. Washington) Delivered to GCST, awaiting implementation
Streets future Hg emissions Bess Corbitt (Harvard) Delivered to GCST, awaiting implementation
Nested-grid Hg simulation Lyatt Jaeglé (U. Washington) Delivered to GCST, awaiting implementation
Updated Hg(0) oxidation kinetics Bess Corbitt (Harvard)
Justin Parrella (Harvard)
Delivered to GCST, awaiting implementation
Capability to use GEOS-Chem Br/BrO fields in Hg simulation Bess Corbitt (Harvard)
Justin Parrella (Harvard)
Delivered to GCST, awaiting implementation
Correction for GEOS-5 PBL heights Sajeev Philip (Dalhousie) Delivered to GCST, awaiting implementation
Updated Canadian NH3 inventory Wai-Ho Lo (Dalhousie) Delivered to GCST, awaiting implementation
Tagged sulfate and nitrate simulation Becky Alexander (U. Washington) Code is ready
Update to EDGAR 4 anthropogenic emissions Qiang Zhang (Tsinghua) Code is ready
Improved HO2 uptake by aerosol Jingqiu Mao (NASA/GFDL) Code is ready
Fix RO2+HO2 rate constant Fabien Paulot (Harvard) globchem.dat is ready

--Melissa Payer 11:51, 21 May 2012 (EDT)
--Bob Y. 13:55, 22 May 2012 (EDT)

Almost there (< 6 months)

Item Author(s) Status
FAA/AEDT aircraft emissions inventory Steven Barrett et al (MIT) Code delivered to GCST, on hold
Longwave & shortwave RF codes for chemistry-climate Fangqun Yu (SUNY Albany) Fangqun Yu wrote:
We developed and tested the two components in v8.3.1-2. So far we have not got a chance yet to move them into v9.1.2. In the last couple of weeks we began to look into v9.1.2, focusing on re-evaluation of APM driven by MERRA data. The 3-hr MERRA data will enable us to get rid of met data interpretation used in APM. After We validate the APM in v9.1.2, we will begin to integrate RF codes and APM capability for nested grid into v9.1.2.
APM capability for nested grid Fangqun Yu (SUNY Albany) See above message from Fangqun Yu
Interannual lightning Lee Murray (Harvard)
Primary marine OA emissions Kateryna Lapina (CSU)
Implement GISS advection scheme for GISS-driven applications GEOS-Chem Support Team
Updated dicarbonyl simulation May Fu (Peking U.)
Satellite diagnostic for XCO2 Liang Feng (U. Edinburgh)
Improve temporal resolution of anthropogenic CO2 sources Ray Nassar (Environment Canada)
Improvements to isoprene chemistry, standardization of Paulot Scheme Fabien Paulot (Harvard)
Eloise Marais (Harvard)
Jingqiu Mao (NASA/GFDL)
Mat Evans (York)
RO2+NO3 chemistry updates Mat Evans (York)
Inhibition of N2O5 hydrolysis by aerosol nitrate Lin Zhang (Harvard)
Improved ROOH formation and chemistry Fabien Paulot (Harvard)
Mat Evans (York)
Unified emissions pre-processor Qiang Zhang (Tsinghua) Qiang Zhang wrote:
By now we have done EDGAR 4, and now we are tackling the VOC speciation issue. Then the next step is to incorporate several regional inventory datasets. My expertise is anthropogenic emission inventory development, so my efforts focus on how to include state-of-art research inventories in the GC model. I hope we can merge our efforts [with your efforts toward the Grid-independent Emissions Component] into one framework.
Update Asian emissions Qiang Zhang (Tsinghua)
Improved operator splitting Mauricio Santillana (Harvard)
  • Towards this end, we have added the Centralized chemistry time step option into GEOS-Chem v9-01-02. This makes sure that the tracer concentrations being sent into the chemistry solver are more representative of the center of the chemistry timestep, and thus are more consistent with when the photolysis gets computed.
  • Mauricio is writing up his results for a paper to be submitted to JGR.
Nested-grid model at 0.25° x 0.3125° resolution Yuxuan Wang (Tsinghua) Work on this is currently proceeding. We are investigating how best to create two nested domains in order to accommodate the SEAC4RS mission support (which would help avoid memory limitations).
Replace CASA CO2 biosphere climatology with year-specific fluxes Ray Nassar (Environment Canada)
Dylan Jones (U. Toronto)
Ray Nassar wrote:
SiB Fluxes are available to replace the old CASA fluxes, courtesy of Janina Messerschmidt et al. New CASA fluxes would also be good, such that the user can select options in the input.geos file.
Improved dust simulation in nested-grid model Rokjin Park (Seoul Nat'l Univ.) Rokjin Park wrote:
We are evaluating the performance of new dust scheme over East Asia
CESM/CAM5 interface for chemistry-climate Rokjin Park (Seoul Nat'l Univ.)
Joshua Fu (U. Tennessee)
Rokjin Park wrote:
CESM/CAM5 - GEOS-Chem linking tool has been developed and will be tested soon

--Bob Y. 14:02, 17 May 2012 (EDT)
--Melissa Payer 11:51, 21 May 2012 (EDT)

Over the horizon (6-12 months)

Item Author(s) Status
Working with GEOS-5.7.2 GEOS-Chem Support Team Initial changes already added into v9-01-03; validation is ongoing
High-resolution emissions for above nested-grid model Yuxuan Wang (Tsinghua)
Update HCN simulation Qian Li (U. Edinburgh)
Dylan Jones (U. Toronto)
Improved planeflight diagnostic Mat Evans (York)
Chemistry diagnostics Mat Evans (York)
3-D VOC source for tagged CO simulations Dylan Jones (U. Toronto)
Move to 2° x 2.5° versions of GISS GCM ModelE and Model3 Loretta Mickley (Harvard) For more information, please see the GISS Model E Memo
by (Lee Murray and Loretta Mickley).
Implement IPCC AR5 scenarios Loretta Mickley (Harvard)
Improve ocean CO2 flux Ray Nassar (Environment Canada)
Kevin Bowman (JPL)
Standardize the two-film parameterization of air-sea exchange Hg and POPs Working Group
Model engineering - improving KPP diagnostics Mat Evans (York)
Barron Henderson (UNC)
Mike Long (Harvard)
CO2 inhibition effect for isoprene emission Loretta Mickley (Harvard)

--Bob Y. 13:45, 17 May 2012 (EDT)
--Melissa Payer 11:51, 21 May 2012 (EDT)

Longer term (> 12 months)

Item Author(s) Status
Grid-independent GEOS-Chem GEOS-Chem Support Team
  • We plan on delivering the Chemistry Component to NASA/GMAO by June 1, 2012, which marks the end of Year 1 of the project.
  • Development of the Emissions Component will be the focus of Year 2 of the project. Much of this work will be done by Christoph Keller (Harvard). Our goal is to completely replace GEOS-Chem's legacy emissions routines with a modern emissions package that can be easily interfaced to an external GCM.
Read emission data at native resolution and regrid on the fly GEOS-Chem Support Team This has more or less been achieved with the addition of the these packages:

Also note: the new Grid-Independent Emissions Component will also perform this functionality by taking advantage of the regridding features of the Earth System Model Framework. This is an ongoing development project.

Improved atmospheric-ocean-land coupling of Hg simulation Hg and POPs Working Group
Primary biological aerosol particles (PBAP's) Colette Heald (Colo. State) Only to be implemented if users identified
Unified radiative forcing module for GEOS-Chem Aerosols Working Group Under discussion/investigation
Effective meteorolgical fields for dust and sea-salt emissions GEOS-Chem Support Team
Dust simulation expansion; tagged simulation, oxalate, Fe, P Matthew Johnson (NCSU) Matthew Johnson wrote:
I am presently working on publishing this work and this is my last step before graduating with PhD. I will have little time to work on getting this code ready for full implementation. This is due to the fact I have my code in an older version of the model and the newer versions of GEOS-Chem do not even use the same chemical solver and aerosol thermodynamics solver. So it would be alot of work to get the model ready right now.
Benchmark for aerosol deposition Colette Heald (Colo. State) TBD

--Bob Y. 14:07, 17 May 2012 (EDT)
--Melissa Payer 10:29, 7 June 2012 (EDT)