Transport Working Group: Difference between revisions

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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://science.gsfc.nasa.gov/sci/bio/k.e.knowland Emma Knowland] (Github: [https://github.com/keknowland @keknowland])
*[http://research.nianet.org./~hyl/ Hongyu Liu]
*[https://www.cira.colostate.edu/staff/schuh-andrew/ Andrew Schuh] (Github: [https://github.com/aschuh @aschuh])
*[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)


== 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
|Examining the effect of grid resolution on vertical transport and convective mass fluxes
|[mailto:karenyu@g.harvard.edu Karen Yu]
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|Harvard
|Quantifying the impact of numerical diffusion on plume transport and comparing to observed atmospheric diffusion
|[mailto:seastham@fas.harvard.edu Sebastian D. Eastham]
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|Harvard
|Assessing the co-benefits of increasing vertical and horizontal grid resolutions for tracer transport
|[mailto:jiaweizhuang@g.harvard.edu Jiawei Zhuang]
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|Dalhousie
|Implementation of a new PBL mixing scheme
|[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
|Vertical resolution needs for GEOS-Chem global transport
|[[User:Ada Shaw|Ada Shaw]]
 
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|Harvard<br>U. Toronto
|Re-diagnosed convection in off-line GEOS-Chem
|[[User:Bmy|Bob Yantosca]]<br>Tailong He


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== Current GEOS-Chem Transport Issues ==
== Related pages ==
 
Text to be added
 
== Common set of tracers in GEOS-Chem and GEOS ==
 
<span style="color:darkorange">'''''This update will be included in [[GEOS-Chem 12#12.2.0|GEOS-Chem 12.2.0]].'''''</span>
 
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]].
 
=== List of tracers in GEOS ===
 
17 GMI tracers: https://gmi.gsfc.nasa.gov/uploads/files/gmi_tracersuite.pdf
 
Additional Tracers in GEOS - used in part to get an age spectrum
 
# Name    Units        Long Name
# -----    ------      --------------------------------
nh_5      'mol mol-1'  Northern Hemisphere 5 day tracer
nh_50    'mol mol-1'  Northern Hemisphere 50 day tracer
sh_5      'mol mol-1'  Southern Hemisphere 5 day tracer
sh_50    'mol mol-1'  Southern Hemisphere 50 day tracer
ntr_5    'mol mol-1'  Northern Hemisphere Subtropical 5 day tracer
ntr_50    'mol mol-1'  Northern Hemisphere Subtropical 50 day tracer
str_5    'mol mol-1'  Southern Hemisphere Subtropical 5 day tracer
str_50    'mol mol-1'  Southern Hemisphere Subtropical 50 day tracer
tr_5      'mol mol-1'  Tropical 5 day tracer
tr_50    'mol mol-1'  Tropical 50 day tracer
e90      'mol mol-1'  Constant emission 90 day tracer
e90_n    'mol mol-1'  Constant emission Northern Hemisphere 90 day tracer
e90_s    'mol mol-1'  Constant emission Southern Hemisphere 90 day tracer
st80_25  'mol mol-1'  Stratospheric source 25 day tracer
aoa_nh    'days'        Age of air tracer (Northern Hemisphere surface source)
::
 
and a few others
 
CH3I      'mol mol-1'  Methyl iodide
CO_50_na  'mol mol-1'  Anthro CO North America 50 day tracer
 
--[[User:Lizzie Lundgren|Lizzie Lundgren]] ([[User talk:Lizzie Lundgren|talk]]) 15:41, 15 June 2018 (UTC)
 
=== Origin tracers ===
 
'''''Chris Holmes wrote:'''''
 
: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.
 
: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.
 
:'''Reference'''
: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.
 
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 18:42, 23 February 2018 (UTC)
 
=== Implementation in GEOS-Chem ===
 
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:
 
%%% ADVECTED SPECIES MENU %%%:
Type of simulation      : 1
Species Entries ------->: Name
Species name            : Rn222
Species name            : Pb210
Species name            : Pb210Strat
Species name            : Be7
Species name            : Be7Strat
Species name            : Be10
Species name            : Be10Strat
Species name            : PassiveTracer
<span style="color:green">Species name            : SF6tracer
Species name            : CH3Itracer
Species name            : COtracer25days
Species name            : COtracer50days
Species name            : Emis90dayTracer
Species name            : Emis90dayTracerNH
Species name            : Emis90dayTracerSH
Species name            : UniformTracer</span>
 
In the passive species menu of input.geos, each species is defined along with the molecular weight, lifetime, default background concentration, and long name.
 
%%% PASSIVE SPECIES MENU %%%:
Passive species name    : PassiveTracer    1.0    -1      1.0e-7  Passive_tracer_for_mass_conservation_eval
<span style="color:green">Passive species name    : SF6tracer        146.0  1.0e11  1.0e-20  Sulfur_hexafluoride
Passive species name    : CH3Itracer        142.0  4.32e5  1.0e-20  Methyl_iodide
Passive species name    : COtracer25days    28.0  2.16e6  1.0e-20  Anthro_CO_25day_tracer
Passive species name    : COtracer50days    28.0  4.32e6  1.0e-20  Anthro_CO_50day_tracer
Passive species name    : Emis90dayTracer  1.0    7.776e6 1.0e-20  Constant_emission_tracer
Passive species name    : Emis90dayTracerNH 1.0    7.776e6 1.0e-20  Constant_emission_tracer_for_NH
Passive species name    : Emis90dayTracerSH 1.0    7.776e6 1.0e-20  Constant_emission_tracer_for_SH
Passive species name    : UniformTracer    28.0  2.16e6  1.0e-20  CO-like_tracer_with_uniform_emission</span>
 
Species with an emissions flux also have a corresponding entry in the HEMCO_Config.rc file.
 
#==============================================================================
# SF6 emissions from EDGAR v4.2
#==============================================================================
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
#==============================================================================
# CH3I emitted over the oceans at rate of 1 molec/cm2/s
#==============================================================================
0 SRC_2D_CH3Itracer 1.0 - - - xy molec/cm2/s CH3Itracer 1000 1 1
#==============================================================================
# Anthropogenic CO 25-day and 50-day tracers
#==============================================================================
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
0 CEDS_COtrc50d_ENE  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
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
0 CEDS_COtrc50d_IND  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
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
0 CEDS_COtrc50d_TRA  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
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
0 CEDS_COtrc50d_RCO  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
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
0 CEDS_COtrc50d_SLV  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
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
0 CEDS_COtrc50d_WST  -                                                          -      -                  - -  -      COtracer50days  26 1/2/12 5
#==============================================================================
# e90 tracer is emitted with a uniform flux of 100 ppbv
#==============================================================================
0 SRC_2D_Emis90day  100 - - - xy ppbv Emis90dayTracer  -    1 1
0 SRC_2D_Emis90dayNH 100 - - - xy ppbv Emis90dayTracerNH 1001 1 1
0 SRC_2D_Emis90daySH 100 - - - xy ppbv Emis90dayTracerSH 1002 1 1
#==============================================================================
# Uniform surface emission of 2400 Tg/yr
#==============================================================================
0 SRC_2D_Uniform 1.5e-7 - - - xy kg/m2/s UniformTracer - 1 1
...
1000 OCEAN_MASK $METDIR/$CNYR/01/$MET.$CNYR0101.CN.$RES.$NC FROCEAN 2000/1/1/0 C xy 1 1 -180/-90/180/90
1001 NH_MASK    -180/0/180/90  - 2000/1/1/0 C xy 1 1 -180/0/180/90
1002 SH_MASK    -180/-90/180/0 - 2000/1/1/0 C xy 1 1 -180/-90/180/0


--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:12, 4 January 2019 (UTC)
*[[TransportTracers simulation]]

Latest revision as of 17:47, 5 September 2024

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Current GEOS-Chem Transport Projects (please add yours!)

User Group Description Contact Person
NASA GMAO
Harvard 		Model inter-comparison of transport (GEOS, GCHP, GCClassic) Emma Knowland
Lizzie Lundgren
U. Toronto Assessing impact of transport biases on methane simulation and applying weak constraint 4D-Var to correct them Ilya Stanevich
U. Toronto Characterizing model transport errors using weak constraint 4D-Var Martin Keller
U. Toronto Quantifying the impact of errors in PBL mixing on CO2 Wei Lu
NIA / NASA Langley Constraints on Precipitation Scavenging and Transport of Soluble Trace Species From Airborne and Surface Radionuclide (222Rn, 210Pb, 7Be, 10Be) Observations Bo Zhang
Hongyu Liu
Add yours here!    

Related pages

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