GECKO-A Details
Notes on the GECKO-A Output Library
Plotting Notes
- Unless explicitly mentioned in the plot legend, the precursor is excluded from the analysis.
- Some species lifetimes are shorter than the minimum time resolution available here.
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The GECKO-A Output Library: Precursor List
| C# | linear | branched | cyclic and/or unsaturated |
|---|---|---|---|
| 3-9 | propane, butane, pentane, hexane, heptane, octane, nonane | isobutane | isoprene, benzene, toluene, oct‑1‑ene, 2‑methyl‑oct‑1‑ene |
| 10 | decane | 2‑methylnonane, 4,5‑dimethyloctane, 3,4,5‑trimethylheptane | cyclodecane, α‑pinene, β‑pinene, β‑myrcene, limonene, ocimene, sabinene |
| 12 | dodecane | 2‑methylundecane, 2,4‑dimethyldecane, 2,4,6‑trimethylnonane, 2,3,4,6‑tetramethyloctane, 2,3,4,5,6‑pentamethylheptane | dodec‑1‑ene |
| 14-15 | tetradecane | 2‑methyltridecane, 3,3‑diethyldecane, 6,7‑dimethyldodecane, 5,6,7‑trimethylundecane | butadec‑6‑ene, cyclopentadecane, 2‑methylbutadec‑1‑ene |
| 17-18 | heptadecane, octadecane | 2‑methylheptadecane, 8,9‑dimethylhexadecane, 3,3‑diethyltetradecane, 7,8,9‑trimethylpentadecane | heptadec‑1‑ene, heptadec‑8‑ene |
| 22 | docosane | 2‑methyluncosane, 10,11‑dimethyleicosane, 3,3‑diethyloctadecane, 9,10,11‑trimethylnonadecane |
Simulation Conditions
| Scenario | [Nox] molec/cc, pp* |
| urban | 5.0e+11, 200 ppb |
| polluted continental | 5.0e+10, 20 ppb |
| continental | 1.25e+10, 5 ppb |
| remote continental | 6.25e+8, 2.5 ppt |
| remote | 5.0e+8, 2 ppt |
| All simulations include | |
| T = 298K | [O3] 1e+12, 40 ppb |
| SZA = 45° (constant) |
[precursor] = 1 pptvC |
| Simulation length = 10 days (> 5 x τ-precursor) |
|
Output Display Options
| Single-phase plots ( Gas or Aerosol ) | |
| Distributions wrt. time |
•Top 10 Species
•Top 10 Elemental Formulae
•Carbon chain length
•Functional groups
|
| Atomic ratios |
•Time evolution
•Van Krevelen plots
|
| Multi-phase plots | |
| Time evolutions |
•Carbon per phase
•Mass per phase
•SOA yield
|
| Snapshots |
•OSc vs Cstar bubble plots
•Molecular Mass Distributions (“Mass Spectra”)
•Vapor Pressure Distributions (“VBS”)
•Henry’s Law Distributions
|
How to Cite
Data citation: Model results obtained from Julia Lee-Taylor and Carl Drews, Atmospheric Chemistry Observations and Modeling (ACOM), NSF-NCAR, https://www.acom.ucar.edu/gecko/output-library.shtml , accessed {date}
Citations for the GECKO-A model: Aumont et al. 2005, Camredon et al. 2007
- Aumont, B., Szopa, S., and Madronich, S.: Modelling the evolution of organic carbon during its gas-phase tropospheric oxidation: development of an explicit model based on a self generating approach, Atmospheric Chemistry and Physics, 5, 2497-2517, doi:10.5194/acp-5-2497-2005, 2005
- Camredon, M., Aumont, B., Lee-Taylor, J., and Madronich, S.: The SOA/VOC/NOx system: an explicit model of secondary organic aerosol formation, Atmospheric Chemistry and Physics, 7, 5599-5610, doi:10.5194/acp-7-5599-2007, 2007
Support
- US Department of Energy.
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