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| !width="300px" bgcolor="#CCCCCC"|Transport Working Group Co-Chairs | | !width="300px" bgcolor="#CCCCCC"|Transport Working Group Co-Chairs |
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− | *[mailto:andrea.m.molod@nasa.gov Andrea Molod] and | + | *[https://www.cira.colostate.edu/staff/schuh-andrew/ Andrew Schuh] (Github: [https://github.com/aschuh @aschuh]) |
− | *[http://research.nianet.org./~hyl/ Hongyu Liu] | + | *[https://science.larc.nasa.gov/people/katherine-travis/ Katie Travis] (Github: [https://github.com/ktravis213 @ktravis213]) |
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| *Click on '''Leave this group''' | | *Click on '''Leave this group''' |
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− | --[[User:Bmy|Bob Y.]] ([[User talk:Bmy|talk]]) 18:38, 21 August 2015 (UTC)
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| == Current GEOS-Chem Transport Projects (please add yours!) == | | == Current GEOS-Chem Transport Projects (please add yours!) == |
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| !width="600px"|Description | | !width="600px"|Description |
| !width="300px"|Contact Person | | !width="300px"|Contact Person |
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| + | |NASA GMAO<br>Harvard |
| + | |Model inter-comparison of transport (GEOS, GCHP, GCClassic) |
| + | |Emma Knowland<br>Lizzie Lundgren |
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| |Quantifying the impact of errors in PBL mixing on CO2 | | |Quantifying the impact of errors in PBL mixing on CO2 |
| |[mailto:wlu@atmosp.physics.utoronto.ca Wei Lu] | | |[mailto:wlu@atmosp.physics.utoronto.ca Wei Lu] |
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− | |Harvard
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− | |Examining the effect of grid resolution on vertical transport and convective mass fluxes
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− | |[mailto:karenyu@g.harvard.edu Karen Yu]
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− | |Harvard
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− | |Quantifying the impact of numerical diffusion on plume transport and comparing to observed atmospheric diffusion
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− | |[mailto:seastham@fas.harvard.edu Sebastian D. Eastham]
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− | |Harvard
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− | |Assessing the co-benefits of increasing vertical and horizontal grid resolutions for tracer transport
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− | |[mailto:jiaweizhuang@g.harvard.edu Jiawei Zhuang]
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− | |Dalhousie
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− | |Implementation of a new PBL mixing scheme
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− | |[mailto:Aaron.van.Donkelaar@dal.ca Aaron van Donkelaar]
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| |NIA / NASA Langley | | |NIA / NASA Langley |
| |Constraints on Precipitation Scavenging and Transport of Soluble Trace Species From Airborne and Surface Radionuclide (222Rn, 210Pb, 7Be, 10Be) Observations | | |Constraints on Precipitation Scavenging and Transport of Soluble Trace Species From Airborne and Surface Radionuclide (222Rn, 210Pb, 7Be, 10Be) Observations |
− | |[mailto:bo.zhang@nianet.org Bo Zhang] [mailto:hongyu.liu-1@nasa.gov Hongyu Liu] | + | |[mailto:bo.zhang@nianet.org Bo Zhang]<br>[mailto:hongyu.liu-1@nasa.gov Hongyu Liu] |
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− | |Harvard
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− | |Vertical resolution needs for GEOS-Chem global transport
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− | |[[User:Ada Shaw|Ada Shaw]]
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− | |Harvard<br>U. Toronto
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− | |Re-diagnosed convection in off-line GEOS-Chem
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− | |[[User:Bmy|Bob Yantosca]]<br>Tailong He
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− | == Current GEOS-Chem Transport Issues == | + | == Related pages == |
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− | Text to be added
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− | == Common set of tracers in GEOS-Chem and GEOS ==
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− | <span style="color:darkorange">'''''This update will be included in [[GEOS-Chem 12#12.2.0|GEOS-Chem 12.2.0]].'''''</span>
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− | | + | |
− | The Transport Working Group has proposed implementing additional tracers in GEOS-Chem for benchmarking purposes and diagnosing transport in GEOS-Chem compared to GEOS-5. The [[#List of tracers in GEOS|list of tracers in GEOS]] is provided below and is implemented via the tracer gridded component "TR_GridComp" in GEOS. In GEOS-Chem, the tracer suite has been added as an extension of the [[Rn-Pb-Be simulation]] (simulation type "1") by default, but may be added to any GEOS-Chem simulations by following the [[#Implementation in GEOS-Chem|instructions below]].
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− | === List of tracers in GEOS ===
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− | 17 GMI tracers: https://gmi.gsfc.nasa.gov/uploads/files/gmi_tracersuite.pdf
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− | Additional Tracers in GEOS - used in part to get an age spectrum
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− | # Name Units Long Name
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− | # ----- ------ --------------------------------
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− | nh_5 'mol mol-1' Northern Hemisphere 5 day tracer
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− | nh_50 'mol mol-1' Northern Hemisphere 50 day tracer
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− | sh_5 'mol mol-1' Southern Hemisphere 5 day tracer
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− | sh_50 'mol mol-1' Southern Hemisphere 50 day tracer
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− | ntr_5 'mol mol-1' Northern Hemisphere Subtropical 5 day tracer
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− | ntr_50 'mol mol-1' Northern Hemisphere Subtropical 50 day tracer
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− | str_5 'mol mol-1' Southern Hemisphere Subtropical 5 day tracer
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− | str_50 'mol mol-1' Southern Hemisphere Subtropical 50 day tracer
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− | tr_5 'mol mol-1' Tropical 5 day tracer
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− | tr_50 'mol mol-1' Tropical 50 day tracer
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− | e90 'mol mol-1' Constant emission 90 day tracer
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− | e90_n 'mol mol-1' Constant emission Northern Hemisphere 90 day tracer
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− | e90_s 'mol mol-1' Constant emission Southern Hemisphere 90 day tracer
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− | st80_25 'mol mol-1' Stratospheric source 25 day tracer
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− | aoa_nh 'days' Age of air tracer (Northern Hemisphere surface source)
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− | ::
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− | and a few others
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− | CH3I 'mol mol-1' Methyl iodide
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− | CO_50_na 'mol mol-1' Anthro CO North America 50 day tracer
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− | --[[User:Lizzie Lundgren|Lizzie Lundgren]] ([[User talk:Lizzie Lundgren|talk]]) 15:41, 15 June 2018 (UTC)
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− | === Origin tracers ===
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− | '''''Chris Holmes wrote:'''''
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− | :Another tracer suggestion: I like and use the "origin" tracers defined by Clara Orbe et al. (2013). These tracers give the fraction of air that that originates in specified source regions.
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− | :In addition to diagnosing transport, I think the tracers will be useful as templates for users to modify for their own purposes (e.g. customizing source regions). For that reason, a comprehensive set of tracers would be useful, if they can be optional.
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− | | + | |
− | :'''Reference'''
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− | :Orbe, C., M. Holzer, L. M. Polvani, and D. Waugh (2013), ''Air-mass origin as a diagnostic of tropospheric transport'', <u>J. Geophys. Res. Atmos.</u>, 118, 1459–1470, doi:10.1002/jgrd.50133.
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− | --[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 18:42, 23 February 2018 (UTC)
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− | === Implementation in GEOS-Chem ===
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− | Several of the GEOS tracers listed above have been added as [[HEMCO_examples#Passive_species|passive species in GEOS-Chem]]. The new tracers are listed in the advected species menu of input.geos as:
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− | %%% ADVECTED SPECIES MENU %%%:
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− | Type of simulation : 1
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− | Species Entries ------->: Name
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− | Species name : Rn222
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− | Species name : Pb210
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− | Species name : Pb210Strat
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− | Species name : Be7
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− | Species name : Be7Strat
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− | Species name : Be10
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− | Species name : Be10Strat
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− | Species name : PassiveTracer
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− | <span style="color:green">Species name : SF6tracer
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− | Species name : CH3Itracer
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− | Species name : COtracer25days
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− | Species name : COtracer50days
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− | Species name : Emis90dayTracer
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− | Species name : Emis90dayTracerNH
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− | Species name : Emis90dayTracerSH
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− | Species name : UniformTracer</span>
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− | In the passive species menu of input.geos, each species is defined along with the molecular weight, lifetime, default background concentration, and long name.
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− | | + | |
− | %%% PASSIVE SPECIES MENU %%%:
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− | Passive species name : PassiveTracer 1.0 -1 1.0e-7 Passive_tracer_for_mass_conservation_eval
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− | <span style="color:green">Passive species name : SF6tracer 146.0 1.0e11 1.0e-20 Sulfur_hexafluoride
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− | Passive species name : CH3Itracer 142.0 4.32e5 1.0e-20 Methyl_iodide
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− | Passive species name : COtracer25days 28.0 2.16e6 1.0e-20 Anthro_CO_25day_tracer
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− | Passive species name : COtracer50days 28.0 4.32e6 1.0e-20 Anthro_CO_50day_tracer
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− | Passive species name : Emis90dayTracer 1.0 7.776e6 1.0e-20 Constant_emission_tracer
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− | Passive species name : Emis90dayTracerNH 1.0 7.776e6 1.0e-20 Constant_emission_tracer_for_NH
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− | Passive species name : Emis90dayTracerSH 1.0 7.776e6 1.0e-20 Constant_emission_tracer_for_SH
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− | Passive species name : UniformTracer 28.0 2.16e6 1.0e-20 CO-like_tracer_with_uniform_emission</span>
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− | Species with an emissions flux also have a corresponding entry in the HEMCO_Config.rc file.
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− | #==============================================================================
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− | # SF6 emissions from EDGAR v4.2
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− | #==============================================================================
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− | 0 EDGAR_SF6tracer $ROOT/SF6/v2019-01/EDGAR_v42_SF6_IPCC_2.generic.01x01.nc emi_sf6 1970-2008/1-12/1/0 C xy kg/m2/s SF6tracer - 1 1
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− |
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− | #==============================================================================
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− | # CH3I emitted over the oceans at rate of 1 molec/cm2/s
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− | #==============================================================================
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− | 0 SRC_2D_CH3Itracer 1.0 - - - xy molec/cm2/s CH3Itracer 1000 1 1
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− |
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− | #==============================================================================
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− | # Anthropogenic CO 25-day and 50-day tracers
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− | #==============================================================================
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− | 0 CEDS_COtrc25d_ENE $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_ene 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_ENE - - - - - - COtracer50days 26 1/2/12 5
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− | 0 CEDS_COtrc25d_IND $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_ind 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_IND - - - - - - COtracer50days 26 1/2/12 5
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− | 0 CEDS_COtrc25d_TRA $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_tra 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_TRA - - - - - - COtracer50days 26 1/2/12 5
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− | 0 CEDS_COtrc25d_RCO $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_rco 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_RCO - - - - - - COtracer50days 26 1/2/12 5
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− | 0 CEDS_COtrc25d_SLV $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_slv 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_SLV - - - - - - COtracer50days 26 1/2/12 5
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− | 0 CEDS_COtrc25d_WST $ROOT/CEDS/v2018-08/$YYYY/CO-em-anthro_CMIP_CEDS_$YYYY.nc CO_wst 1950-2014/1-12/1/0 C xy kg/m2/s COtracer25days 26 1/2/12 5
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− | 0 CEDS_COtrc50d_WST - - - - - - COtracer50days 26 1/2/12 5
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− |
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− | #==============================================================================
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− | # e90 tracer is emitted with a uniform flux of 100 ppbv
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− | #==============================================================================
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− | 0 SRC_2D_Emis90day 100 - - - xy ppbv Emis90dayTracer - 1 1
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− | 0 SRC_2D_Emis90dayNH 100 - - - xy ppbv Emis90dayTracerNH 1001 1 1
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− | 0 SRC_2D_Emis90daySH 100 - - - xy ppbv Emis90dayTracerSH 1002 1 1
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− |
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− | #==============================================================================
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− | # Uniform surface emission of 2400 Tg/yr
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− | #==============================================================================
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− | 0 SRC_2D_Uniform 1.5e-7 - - - xy kg/m2/s UniformTracer - 1 1
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− |
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− | ...
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− |
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− | 1000 OCEAN_MASK $METDIR/$CNYR/01/$MET.$CNYR0101.CN.$RES.$NC FROCEAN 2000/1/1/0 C xy 1 1 -180/-90/180/90
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− | 1001 NH_MASK -180/0/180/90 - 2000/1/1/0 C xy 1 1 -180/0/180/90
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− | 1002 SH_MASK -180/-90/180/0 - 2000/1/1/0 C xy 1 1 -180/-90/180/0
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− | --[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:12, 4 January 2019 (UTC)
| + | *[[TransportTracers simulation]] |
All users interested in the GEOS-Chem transport scheme are encouraged to subscribe to the transport email list (click on the link in the contact information section section below).