Difference between revisions of "POPs simulation"

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The updated PAH model is described in [http://pubs.acs.org/doi/abs/10.1021/es403098w Friedman et al. (2014)].
 
The updated PAH model is described in [http://pubs.acs.org/doi/abs/10.1021/es403098w Friedman et al. (2014)].
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'''''[http://web.mit.edu/clf/www/ Carey Friedman] wrote:'''''
 
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:The updates are in version 9-03-01.
 
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:Some details about this version compared to the last:
 
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:The ability to run with GCAP met is possible, but I've toggled several GCAP options from within the code. The same holds for a new option to turn on "secondary emissions" (surface-to-air fluxes from previous deposition). Here's the list of in-the-code toggles as far as I can remember:
 
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:'''Changes for ability to do secondary emissions:'''
 
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:<tt>pops_mod.F</tt>
 
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:*in the routine "pops_readsurfconc", you need to define a path for a file that contains masses of previously deposited PAH in the surface. I have GCAP and GEOS5 versions of these files for each of the three PAHs that we've been simulating.
 
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:*in the routine "pop_read_foc", you need to define a path for a file that contains organic carbon content within surface soils. This is the same no matter what compound you're simulating.
 
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:<tt>land_pops_mod.F</tt>
 
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:*This is an entirely new module, but I don't think I've hard coded anything in here.
 
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:'''Changes for ability to use GCAP:'''
 
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:<tt>global_oh_mod.F, global_o3_mod.F, global_oc_mod.F, global_bc_mod.F</tt>
 
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:*For all species that PAHs interact with (OH, O3, OC, BC), I ran full chemistry GCAP simulations under conditions that corresponded to PAH simulations and archived them to use as input. In the paper above, I had four different scenarios:
 
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:**2000 "present" climate and 2000 emissions (PCPE)
 
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:**2000 climate and 2050 "future" emissions (PCFE)
 
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:**2050 climate and 2000 emissions (FCPE)
 
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:**2050 climate and 2050 emissions (FCFE)
 
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:So I have four files for each of these species, whose names correspond to those abbreviations (PCPE, etc.), that need to be toggled within the code in each of those modules.
 
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:Likewise, in that particular paper, PAH emissions were scaled depending on the scenario, but I did that all within the code, with different scalings for different regions. You would need this info in order to replicate my experiments. The emissions scaling methodology is detailed in my paper.
 
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:Lastly, I made some permanent changes to the default PAH emissions to update their distribution based on wildfire distributions. I've included the input files for the updated emissions inventories for each PAH as well.
 
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--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 15:20, 11 June 2015 (UTC)
 
  
 
== References ==
 
== References ==

Revision as of 15:59, 21 May 2024

The POPs simulation is currently stale in GEOS-Chem 13.0.0 and later versions. We look to the GEOS-Chem Community to help maintain this simulation.


Previous | Next | Guide to GEOS-Chem simulations

  1. Simulations using KPP-built mechanisms (carbon, fullchem, Hg)
  2. Aerosol-only simulation
  3. CH4 simulation
  4. CO2 simulation
  5. Metals simulation
  6. POPs simulation
  7. Tagged CO simulation
  8. Tagged O3 simulation
  9. TransportTracers simulation


Overview

On this page we include information relevant to the persistent organic pollutant (POPs) simulation in GEOS-Chem.

Authors and collaborators

PAH simulation

Overview

This update was tested in the 1-month benchmark simulation v9-02c and approved on 29 Nov 2012.

A simulation for polycyclic aromatic hydrocarbons (PAHs) has been added to GEOS-Chem v8-03-02 following Friedman and Selin (2012). Three separate PAHs are modeled: phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene (BaP). Separate modules have been created for each of the PAHs. Users can choose between different compounds in the input file.

--Melissa Payer 12:31, 21 September 2012 (EDT)

Updates to PAH code

These updates were included in the 1-month benchmark simulation v11-01c and approved on 14 Sept 2015. Additional benchmarking of the POPs simulation is in progress.

The updated PAH model is described in Friedman et al. (2014).

References

  1. Friedman, C. L and, N. E. Selin, Long-Range Atmospheric Transport of Polycyclic Aromatic Hydrocarbons: A Global 3-D Model Analysis Including Evaluation of Arctic Sources, Environ. Sci. Technol., 2012, 46 (17), 9501–9510, 2012. Article
  2. Friedman, C. L., Pierce, J. R., Selin, N. E., Assessing the influence of secondary organic versus primary carbonaceous aerosols on long-range atmospheric polycyclic aromatic hydrocarbon transport, Environ. Sci. Technol., 48 (6), 3293–3302, 2014. Article
  3. Friedman, C. L., Zhang, Y., Selin, N. E, Climate change and emissions impacts on atmospheric PAH transport to the Arctic, Environ. Sci. Technol., 48 (1), 429–437, 2014. Article
  4. Friedman, C. L. and N.E. Selin, PCBs in the Arctic atmosphere: determining important driving forces using a global atmospheric transport model, Atmos. Chem. Phys., 16, 3433-3448, doi:10.5194/acp-16-3433-2016, 2016. Article

--Melissa Sulprizio (talk) 14:34, 20 October 2016 (UTC)


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