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

From Geos-chem
Jump to: navigation, search
(List of priorities as of January 2013)
(Longer term (> 12 months))
Line 318: Line 318:
 
*Many modifications to facilitate the GEOS-Chem/GEOS-5 interface were standardized in [[GEOS-Chem v9-01-03]].
 
*Many modifications to facilitate the GEOS-Chem/GEOS-5 interface were standardized in [[GEOS-Chem v9-01-03]].
 
*We are currently testing the GEOS-Chem chemistry and dry deposition routines within the ESMF interface that will be used to connect GEOS-Chem to the GEOS-5 GCM.  [[Grid-Independent GEOS-Chem: Chemistry_Component#Activation of new pathways for data flow and other structural modifications|Many related improvements]] are being added to [[GEOS-Chem v9-02]].
 
*We are currently testing the GEOS-Chem chemistry and dry deposition routines within the ESMF interface that will be used to connect GEOS-Chem to the GEOS-5 GCM.  [[Grid-Independent GEOS-Chem: Chemistry_Component#Activation of new pathways for data flow and other structural modifications|Many related improvements]] are being added to [[GEOS-Chem v9-02]].
 +
*Testing of GEOS-Chem within the GEOS-5 GCM commenced in February 2013.
 
|-
 
|-
 
|Read emission data at native resolution and regrid on the fly
 
|Read emission data at native resolution and regrid on the fly

Revision as of 15:34, 21 March 2013

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.

We also invite you to view our GEOS-Chem Support Team project management board on Trello.com, which shows the current GCST workflow.

List of priorities as of March 2013

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
Correction for GEOS-5 PBL heights Sajeev Philip (Dalhousie) Approved 16 Oct 2012 (v9-02a); awaiting release
New soil NOx emission module Rynda Hudman (UC Berkeley)
Neil Moore (Dalhousie)
Bram Maasakkers (Eindhoven)
Approved 29 Oct 2012 (v9-02b); awaiting release
EPA/NEI2005 Hg emissions for US Lyatt Jaeglé (U. Washington) Approved 29 Nov 2012 (v9-02c); awaiting release
Streets future Hg emissions Bess Corbitt (Harvard) Approved 29 Nov 2012 (v9-02c); awaiting release
Nested-grid Hg simulation Lyatt Jaeglé (U. Washington) Approved 29 Nov 2012 (v9-02c); awaiting release
Updated Hg(0) oxidation kinetics Bess Corbitt (Harvard)
Justin Parrella (Harvard)
Approved 29 Nov 2012 (v9-02c); awaiting release
Capability to use GEOS-Chem Br/BrO fields in Hg simulation Bess Corbitt (Harvard)
Justin Parrella (Harvard)
Approved 29 Nov 2012 (v9-02c); awaiting release
POPs simulation: Polycyclic aromatic hydrocarbons Carey Friedman (MIT) Approved 29 Nov 2012 (v9-02c); awaiting release
Inorganic chemistry updates Mat Evans (York) Approved 07 Feb 2013 (v9-02f); awaiting release
Methyl peroxy nitrate (MPN) chemistry Ellie Browne (UC Berkeley) Approved 07 Feb 2013 (v9-02f); awaiting release
Fix RO2+HO2 rate constant Fabien Paulot (Harvard) To be included in v9-02
Improvements to isoprene chemistry, standardization of Paulot Scheme Fabien Paulot (Harvard)
Eloise Marais (Harvard)
Jingqiu Mao (NASA/GFDL)
Mat Evans (York)
To be included in v9-02
Improved HO2 uptake by aerosol Jingqiu Mao (NASA/GFDL) To be included in v9-02
Removal of NOx-Ox partitioning GEOS-Chem Support Team To be included in v9-02
Inhibition of N2O5 uptake by nitrate aerosol Lin Zhang (Beijing University) To be included in v9-02
Updated Canadian NH3 inventory Wai-Ho Lo (Dalhousie) To be included in v9-02
RCP emission scenarios Chris Holmes (UC Irvine) To be included in v9-02
EDGAR v4.2 emissions for CH4 simulation Kevin Wecht (Harvard) To be included in v9-02
Update anthropogenic scale factors through 2010 Aaron van Donkelaar (Dalhousie) To be included in v9-02
Update to EDGAR 4 anthropogenic emissions Qiang Zhang (Tsinghua)
Sajeev Philip (Dalhousie)
To be included in v9-02
Interannual lightning Lee Murray (Harvard) To be included in v9-02
AEIC aircraft emissions inventory Steven Barret (MIT) To be included in v9-02
Expanded SOA Havala Pye (EPA/ORD) To be included in v9-02
Acid uptake on dust aerosols T. Duncan Fairlie (NASA/LARC) To be included in v9-02
Cloudwater pH for sulfate formation Becky Alexander (U. Washington) To be included in v9-02
Update jv_spec.dat with better representation of OC growth with RH and correction to sulfate optics David Ridley (MIT)
Randall Martin (Dalhousie)
To be included in v9-02
Global simulations with GEOS-5 "FP" data product from GMAO GEOS-Chem Support Team To be included in v9-02
  • NOTE: The GEOS-5 "FP" product (aka GEOS-5.9.0) is what we will use for the 0.25° x 0.3125° nested simulations. To run the nested simulations (the 2 items listed below), we also must be able to run the global simulations with this met data product in order to save out transport boundary conditons.
Nested-grid model at 0.25° x 0.3125° resolution Yuxuan Wang (Tsinghua) To be included in v9-02
High-resolution emissions for above nested-grid model Yuxuan Wang (Tsinghua) To be included in v9-02
Improve temporal resolution of anthropogenic CO2 sources Ray Nassar (Environment Canada) To be included in v9-02
Replace CASA CO2 biosphere climatology with year-specific fluxes Ray Nassar (Environment Canada)
Dylan Jones (U. Toronto)
To be included in v9-02

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.
Online PBL height calculation Sajeev Philip (Dalhousie)
Erica McGrath-Spangler(NASA GSFC)
To be included in v9-02

--Melissa Payer 11:35, 21 February 2013 (EST)

Ready to go in

Item Author(s) Status
Tagged sulfate and nitrate simulation Becky Alexander (U. Washington) Deferred to v9-03
Update Asian emissions Qiang Zhang (Tsinghua) Qiang Zhang wrote:
Recently we have developed a new Asian emission inventory for 2008 and 2010, with 0.25 x 0.25 degree resolution. This inventory is a combination of China inventory from my group, India inventory from David Streets, Korea and Japan inventory from official data, and rest of Asia from REAS data. This inventory will be used for the coming MICS-Asia phase III and HTAP assessment. If the community would like to use the new inventory immediately in GEOS-Chem, we can implement it in couple of weeks.

--Melissa Payer 16:17, 20 February 2013 (EST)

Almost there (< 6 months)

Item Author(s) Status
FAA/AEDT aircraft emissions inventory Steven Barrett et al (MIT) S. Barrett et al are developing a new aircraft emissions inventory (AEIC), slated for GEOS-Chem v9-02
Longwave & shortwave RF codes for chemistry-climate Fangqun Yu (SUNY Albany) Fangqun Yu wrote:
While the first paper on aerosol direct radiative forcing (DRF) with the CCCMa RF code has been published (Ma et al., ACP, 2012), a comparison of DRF values (clear sky vs all sky) of GEOS-Chem with those of others in AeroCom (Myhre et al., ACPD, 2012) indicates that CCCMa RF code may have underestimated the impacts of clouds on radiation... More time is needed for further simulations and evaluations. After I am happy with the RF results and if there is enough interest in the community, I will try to find time to move the APM optical calculation code and RRTMG code into v9.1.3 and handle them to GC support team for inclusion in the standard version.
APM capability for nested grid Fangqun Yu (SUNY Albany) Currently evaluating APM simulation with v9-01-03
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)
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.
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.
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
CO2 inhibition effect for isoprene emission Loretta Mickley (Harvard) Amos Tai has implemented the CO2 inhibition effect and is currently testing. A manuscript is in preparation.

--Bob Y. 10:32, 5 October 2012 (EDT)

Over the horizon (6-12 months)

Item Author(s) Status
Update HCN simulation Qian Li (U. Edinburgh)
Dylan Jones (U. Toronto)
Online RT model in GEOS-Chem (integration of shortwave and longwave RRTMG) Colette Heald, Steven Barrett and David Ridley (MIT) Preliminary integration complete Oct 2012, testing, optimizing with planned delivery Spring 2013
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)

--Melissa Payer 12:23, 19 September 2012 (EDT)

Longer term (> 12 months)

Item Author(s) Status
Grid-independent GEOS-Chem GEOS-Chem Support Team
  • We delivered the Chemistry Component to NASA/GMAO on June 1, 2012 (at the end of project Year 1).
  • After the initial handoff, it was discovered that further technical fixes and updates were necessary. We have largely resolved these in 1-month benchmark v9-01-03p.
  • We are currently testing the GEOS-Chem/GEOS-5 GCM interface on machines at NASA.
  • 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.
  • Many modifications to facilitate the GEOS-Chem/GEOS-5 interface were standardized in GEOS-Chem v9-01-03.
  • We are currently testing the GEOS-Chem chemistry and dry deposition routines within the ESMF interface that will be used to connect GEOS-Chem to the GEOS-5 GCM. Many related improvements are being added to GEOS-Chem v9-02.
  • Testing of GEOS-Chem within the GEOS-5 GCM commenced in February 2013.
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
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

--Melissa Payer 12:23, 19 September 2012 (EDT)