History collections for dry deposition

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Previous | Next | Guide to GEOS-Chem History diagnostics

  1. Overview of History diagnostics
  2. Legend for History diagnostics
  3. Collections for History diagnostics
  4. History collections for advection and mixing
  5. History collections for aerosols
  6. History collections for budgets
  7. History collections for chemistry and photolysis
  8. History collections for convection and wet deposition
  9. History collections for dry deposition
  10. History collections for mercury and POPs
  11. History collections for met fields and related quantities
  12. History collections for methane
  13. History collections for species concentrations
  14. History collections for TransportTracers
  15. Replicating the behavior of the prior timeseries diagnostics


The ConcAboveSfc collection

The ConcAboveSfc diagnostic collection uses dry deposition quantities (surface resistance, dry deposition velocity) to compute the species concentration of O3 and HNO3 at a given altitude (such as 10 m) above the surface. This will facilitate comparison between GEOS-Chem and observational networks (e.g. CASTNET), which often place instruments above the canopy at approx. 10m height.

Here is a sample definition section for the ConcAboveSfc collection.

  • If this collection is not already present in the HISTORY.rc file in the GEOS-Chem run directory for your selected simulation, you can copy and paste this into your HISTORY.rc file and edit accordingly.
  • To prevent an individual field from being included in the diagnostic output, place a comment character # in front of the field name.
  • Please see our Legend for History diagnostics page for more information about each of the collection tags.
  • The ConcAboveSfc collection is best used as a timeseries diagnostic (set mode to "instantaneous").

NOTE: If dry deposition is turned off in your simulation, then you must disable this collection, or else your run will stop with an error.

  ConcAboveSfc.template:      '%y4%m2%d2_%h2%n2z.nc4',
  ConcAboveSfc.format:        'CFIO',
  ConcAboveSfc.frequency:     00000000 010000
  ConcAboveSfc.duration:      00000000 010000
  ConcAboveSfc.mode:          'instantaneous'
  ConcAboveSfc.fields:        'DryDepRaALT1                  ', 'GIGCchem',
                              'DryDepVelForALT1_?DRYALT?     ', 'GIGCchem',
                              'SpeciesConcALT1_?DRYALT?      ', 'GIGCchem', 
::

This table describes the diagnostic quantities belonging to the ConcAboveSfc collection:

  • NOTE: All fullchem refers to all simulations that use a full-chemistry mechanism (i.e. benchmark, complexSOA*, standard, tropchem. aciduptake, marinePOA, RRTMG, TOMAS).
Diagnostic name Description Units Wildcards Simulations Notes
DryDepRaALT1 Dry deposition aerodynamic resistance computed at ALT1 meters above the surface s cm-1
  • all fullchem
  • tagO3
  • New in 12.6.0.
  • Specify ALT1 in input.geos.


DryDepVelforALT1_<spcname> Dry deposition velocity for all species tagged with the ?DRYALT? tag. cm s-1
  • ?DRYALT?
  • all fullchem
  • tagO3
  • New in 12.6.0.
  • Specify ALT1 in input.geos.
SpeciesConcALT1_<spcname> Chemical species concentrations of O3 or HNO3 at a user-specified height (e.g. 10 m) above the surface mol/mol dry air
  • ?DRYALT?
  • all fullchem
  • tagO3
  • New in 12.6.0.
  • Specify ALT1 in input.geos.

--Bob Yantosca (talk) 20:31, 19 July 2019 (UTC)

The DryDep collection

The DryDep collection contains diagnostics for the flux and velocity of each species lost to dry-deposition.

Here is a sample definition section for the DryDep collection.

  • If this collection is not already present in the HISTORY.rc file in the GEOS-Chem run directory for your selected simulation, you can copy and paste this into your HISTORY.rc file and edit accordingly.
  • To prevent an individual field from being included in the diagnostic output, place a comment character # in front of the field name.
  • Please see our Legend for History diagnostics page for more information about each of the collection tags.
  DryDep.template:            '%y4%m2%d2_%h2%n2z.nc4',
  DryDep.format:              'CFIO',
  DryDep.frequency:           00000100 000000
  DryDep.duration:            00000100 000000
  DryDep.mode:                'time-averaged'
  DryDep.fields:              'DryDepVel_?DRY?               ', 'GIGCchem',
                              'DryDepMix_?DRY?               ', 'GIGCchem',
                              'DryDepChm_?DRY?               ', 'GIGCchem',
                              'DryDep_?DRY?                  ', 'GIGCchem',
::

This table describes the diagnostic quantities belonging to the DryDep collection:

Diagnostic name Description Units Wildcards Simulations Notes Bpch equiv.
DryDepVel_<spcname> Dry deposition velocity cm/s
  • ?DRY?
  • all simulations with drydep species
DryDepMix_<spcname> Dry deposition flux
(computed in PBL mixing)
molec/cm2/s
  • ?DRY?
  • all simulations with drydep species


DryDepChm_<spcname> Dry deposition flux
(computed in chemistry)
molec/cm2/s
  • ?DRY?
  • all simulations with drydep species
DryDep_<spcname> Total dry deposition flux molec/cm2/s
  • ?DRY?
  • all simulations with drydep species
  • Sum of drydep flux in mixing and drydep flux in chemistry.

--Bob Yantosca (talk) 18:11, 19 July 2019 (UTC)



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