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

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Revision as of 15:53, 18 December 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 (IGC6) in May 2013 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 November 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) Approved 22 Mar 2013 (v9-02g); awaiting release
Improvements to isoprene chemistry, standardization of Paulot Scheme Fabien Paulot (Harvard)
Eloise Marais (Harvard)
Jingqiu Mao (NOAA/GFDL)
Mat Evans (York)
Approved 22 Mar 2013 (v9-02g); awaiting release
Removal of NOx-Ox partitioning GEOS-Chem Support Team Approved 15 May 2013 (v9-02h); awaiting release
Inhibition of N2O5 hydrolysis by aerosol nitrate Lin Zhang (Peking University) Approved 17 May 2013 (v9-02i); awaiting release
Improved HO2 uptake by aerosol Jingqiu Mao (NOAA/GFDL) Approved 28 May 2013 (v9-02j); awaiting release
Grid-independent GEOS-Chem: Chemistry GEOS-Chem Support Team
GMAO
Approved 07 Jun 2013 (v9-02k); awaiting release
Inline the TOMAS aerosol microphysics code into standard code Sal Farina (CSU) Approved 07 Jun 2013 (v9-02k); awaiting release
Updated Canadian NH3 inventory Wai-Ho Lo (Dalhousie) Approved 26 Jun 2013 (v9-02l); awaiting release
Updated NH3 seasonal scaling factors over the US Lin Zhang (Peking University) Approved 26 Jun 2013 (v9-02l); awaiting release
RCP emission scenarios Chris Holmes (UC Irvine) Approved 30 Jul 2013 (v9-02m); awaiting release
EDGAR v4.2 emissions for CH4 simulation Kevin Wecht (Harvard) Approved 30 Jul 2013 (v9-02m); awaiting release
Update anthropogenic scale factors through 2010 Aaron van Donkelaar (Dalhousie) Approved 30 Jul 2013 (v9-02m); awaiting release
AEIC aircraft emissions inventory Sebastian D. Eastham(MIT)
Steven Barrett (MIT)
Approved 12 Aug 2013 (v9-02n); awaiting release
Expanded SOA Havala Pye (EPA/ORD) Approved 03 Sep 2013 (v9-02o); awaiting release
Cloud water pH for sulfate formation Becky Alexander (U. Washington) Approved 13 Sep 2013 (v9-02p); awaiting release
Update jv_spec.dat with better representation of OC growth with RH and correction to sulfate optics David Ridley (MIT)
Randall Martin (Dalhousie)
Approved 17 Sep 2013 (v9-02q); awaiting release
Global simulations with GEOS-FP met data product from GMAO GEOS-Chem Support Team To be included in v9-02
  • NOTE: The GEOS-5 "FP" product (aka GEOS-5.11.0) 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.
  • Much of this development work has already been done in advance of the SEAC4RS aircraft mission.
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
Unit testing GEOS-Chem Support Team Available as an external package in GEOS-Chem v9-02o and later versions

--Melissa Sulprizio 15:09, 31 October 2013 (EDT)

Ready to go in

Item Author(s) Status
Structural/programming updates
Grid-independent GEOS-Chem: Packaging ESMF/MAPL GEOS-Chem Support Team
GMAO
  • Need to synchronize the latest GIGC development back into the existing G-C repository
  • This will be an ongoing process that will occur simultaneously as the following science updates are brought into GEOS-Chem.
Science updates
UCX strat chem mechanism, includes: Sebastian Eastham (MIT)
  • Delivered to GCST (Oct 2013)
  • Slated for inclusion: TBD after v9-02 release
Online GCRT David Ridley (MIT)
Colette Heald (MIT)
  • Delivered to GCST (Oct 2013)
  • Slated for inclusion: TBD after v9-02 release
NEI 2008 emissions with hourly resolution Katie Travis (Harvard)
  • Delivered to GCST (Summer 2013)
  • This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
Update to MEGAN2.1 Dylan Millet (U. Minnesota)
  • Delivered to GCST (Summer 2013)
  • This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
Update to EDGAR 4.2 anthropogenic emissions Meng Li and Qiang Zhang (Tsinghua)
Sajeev Philip (Dalhousie)
  • Already implemented in a research version of GEOS-Chem.
  • Code is ready but needs more documentation and evaluation.
PAN / Organics Emily Fischer (CSU)
  • Delivered to GCST (May 2013)
CO2 direct effect on isoprene emissions Amos Tai (City University of Hong Kong)
  • Delivered to GCST (Nov 2013)
Arctic Hg cycling Jenny Fisher (Wollongong)
  • Code is ready
Criegee intermediate Dylan Millet (U. Minnesota)
  • This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
Impaction scavenging for hydrophobic BC Qiaoqiao Wang (Harvard)
  • Delivered to GCST (Nov 2013)
Homogeneous IN removal Qiaoqiao Wang (Harvard)
  • Delivered to GCST (Nov 2013)
MASAGE NH3 inventory Fabien Paulot (Harvard)
  • Code is ready, awaiting delivery to GCST
HTAP and hi-res Asian emissions Qiang Zhang (Tsinghua U.)
Two-way coupling for nested grid simulations Qiang Zhang (Tsinghua U.)
  • Could be quickly implemented into G-C
Improve temporal resolution of anthropogenic CO2 sources Ray Nassar (Environment Canada)
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.
Acid uptake on dust aerosols T. Duncan Fairlie (NASA/LARC)
  • Delivered to GCST, on hold until post v9-02
UNEP 2010 anthropogenic Hg emissions Shaojie Song (MIT)
Historical anthropogenic atmospheric emissions of Hg Bess Corbitt (Harvard)
Subsurface ocean Hg concentration update Anne Soerensen (Harvard)
NEI 2008 Hg emission inventory Yanxu Zhang (Harvard)
VBS SOA option Rokjin Park (Seoul Nat'l Univ.)
Tagged sulfate and nitrate simulation Becky Alexander (U. Washington)
RRTMG radiative transfer code Fangqun Yu (SUNY Albany)
Interannual lightning Lee Murray (Harvard)
  • Available for GEOS-4, but still needs to be implemented in GEOS-5
FINN biomass burning emissions Jingqiu Mao (Princeton
  • This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts

--Bob Y. 10:46, 18 December 2013 (EST)

Almost there (< 6 months)

Item Author(s) Status
Coupling to 3D ocean: OFFTRACK Yanxu Zhang (Harvard)
Dry deposition updates for Hg simulation Bess Corbitt (Harvard)
New Hg soil emissions standard from offline GTMM Bess Corbitt (Harvard)
Pre- and online processing of emissions Qiang Zhang (Tsinghua)
Christoph Keller (Harvard)
Benchmark procedure for nested model Nested Model Working Group
TOMAS parallelization Sal Farina (CSU)
Jeff Pierce (CSU)
Reduced TOMAS (12/15 bins) Sal Farina (CSU)
Jeff Pierce (CSU)
APM v2, synch with v9-02 Fangqun Yu (SUNY Albany)
Retain native resolution 2D surface winds David Ridley (MIT)
GEOS-Chem Support Team
FLEXCHEM Mat Evans (York)
Mike Long (Harvard)
Develop new coding standards GEOS-Chem Support Team
Grid-independent GEOS-Chem: Dry deposition GEOS-Chem Support Team
GMAO
Grid-independent GEOS-Chem: Emissions (aka HEMCO) Christoph Keller (Harvard)
GEOS-Chem Support Team
GMAO
  • Nearing maturity (as of Nov 2013)
  • Currently being implemented into the NASA GEOS5-GCM
Grid-independent GEOS-Chem: NetCDF I/O GEOS-Chem Support Team
CMS CO2 ocean fluxes Kevin Bowman (JPL)
Dynamic subsurface ocean Helen Amos (Harvard)
Updates to PAH code Carey Friedman (MIT)
Helen Amos (Harvard)
Fix for CH4 concentrations after 2008 Lee Murray (Harvard)
Sub-domain within the nested-grid domain Yuxuan Wang (Tsinghua)
Jintai Lin (Peking)
Offline satellite simulator tool Nested Model Working Group
Metal catalyzed oxidation of SO2 Becky Alexander (U. Washington)
Sulfate production on aerosol haze Yuxuan Wang (Tsinghua)
Rokjin Park (Seoul Nat'l Univ.)
Diurnal variation of NH3 emissions Daven Henze (UC Boulder)
Time-varying Arctic parameterizations Jenny Fisher (Wollongong)
Future US emissions inventories of Hg Amanda Giang (MIT)
Coastal inputs of Hg: Rivers and anthropogenic point sources Helen Amos (Harvard)
Complete revamp of GTMM Bess Corbitt (Harvard)
Dust PDF for global simulations David Ridley (MIT)
Benchmark for aerosol deposition Aerosols Working Group

--Bob Y. 10:47, 18 December 2013 (EST)

Over the horizon (6-12 months)

Item Author(s) Status
Updates to redox chemistry for Hg simulation Bess Corbitt (Harvard)
High-resolution regional emissions Nested Model Working Group
Flexible diagnostic package GEOS-Chem Support Team
Grid-independent GEOS-Chem: Convection TBD GCST needs help from community
Grid-independent GEOS-Chem: Wet scavenging TBD GCST needs help from community
Grid-independent GEOS-Chem: PBL mixing Sajeev Philip (Dalhousie)
Christoph Keller (Harvard)
GMAO
Grid-independent GEOS-Chem: Transport TBD GCST needs help from community
3D VOC source for tagged CO simulation and enhanced tagging of secondary CO Jenny Fisher (Wollongong)
Satellite diagnostic for XCO2 Andrew Schuh (CSU)
Dynamic precision GEOS-Chem Support Team
Profiling GEOS-Chem TBD
Methylmercury in the surface ocean Anne Soerensen (Harvard)
Primary marine emissions of OA Brett Gantt (NCSU)
Recommendations for optimal timesteps Sajeev Philip (Dalhousie)
DMS oxidation scheme updating (DMSO, oxidation by BrO) Tom Breider (Harvard)
Becky Alexander (U. Washington)
More options for terrestrial CO2 fluxes Kevin Bowman (JPL)
Merge organics from specialized simulations into the mainline code Dylan Millet (U. Minnesota)

--Melissa Sulprizio 15:33, 21 October 2013 (EDT)

Longer term (12-24 months)

Item Author(s) Status
Coupling to 3D ocean: MIT ocean GCM Yanxu Zhang (Harvard)
Python interface Benoît Bovy (U. Liège-Belgium) + others
Uniformity of units GEOS-Chem Support Team
Historical inventory of Hg in products and processes Hannah Horowitz (Harvard)
Better link/coupling to ocean processes Chemistry-Climate Working Group
Better coupling to biogeochemical cycles Chemistry-Climate Working Group
Chemistry feedbacks to vegetation ecosystem Amos Tai (MIT)
Iodine chemistry Tomás Sherwen (York)
Harmonization of aerosol optics (including water uptake) David Ridley(MIT)
Colette Heald (MIT)
Peter Adams (Carnegie Mellon)
Fangqun Yu (SUNY Albany)
Gabriele Curci (U. L'Aquila)
Randall Martin (Dalhousie)
Grid-independent GEOS-Chem: Ocean interface Yanxu Zhang (Harvard)
Updated LAI Kevin Bowman (JPL)
Folkert Boersma (KNMI)
Merge dicarbonyl simulation into standard simulation Tzung-May Fu (Peking)
Global 0.5x0.667 capability for CO2/CH4 Liang Feng (Edinburgh)
Dylan Jones (U. Toronto)
Dynamic multiple boxes subsurface Arctic Ocean Helen Amos (Harvard)
Anne Soerensen (Harvard)
PCB simulation: atmosphere and ocean Carey Friedman (MIT)
Helen Amos (Harvard)
Nighttime isoprene chemistry Rebecca Schwantes (Caltech)
ClNO2 Mat Evans (York)
Dissolved Fe/Cu Matthew Johnson (NCSU)
Jingqiu Mao (NOAA/GFDL)
UV absorption of organics/brown carbon Rokjin Park (Seoul Nat'l Univ.)
CO-CO2-CH4 simulation Dylan Jones (U. Toronto)
Annemarie Fraser (Edinburgh)
Updated HCN simulation Dylan Jones (U. Toronto)
Passive tracer module Jenny Fisher (Wollongong)

Jenny Fisher wrote:

Passive tracers will not (at this stage) be added as a standard feature of GEOS-Chem, but can be implemented by individual users relatively straightforwardly. We have added this to the SEAC4RS research version of GEOS-Chem.
Plume in-grid lightning NOx emissions Alicia Gressent (U. Toulouse)

--Melissa Sulprizio 15:33, 21 October 2013 (EDT)