Difference between revisions of "UKCA & UMUI Tutorial 7"
From UKCA
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| + | [[UKCA & UMUI Tutorials | Back to UKCA & UMUI Tutorials]] |
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| + | ==Adding Dry Deposition== |
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| + | UKCA uses two different dry-deposition schemes: |
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| + | * A simple 2D parameterisation described by Giannakopoulos (1999) [1], Ganzeveld and Lelieveld (1995)[2], and Sander and Crutzen 1996 (JGR 101 9121)[3]. |
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| + | * A more detailed interactive parameterisation, based on the Wesely scheme (Wesely, 1989; Sanderson 2007)[4,5] |
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| + | The default is to use the 2D scheme, although it is advisable to use the interactive scheme. Within the UKCA code, whether a species is dry deposited or not is controlled in the '''ukca_chem_<span style="color:blue">scheme</span>.F90''' file. In the '''chch_defs''' array there are lines like |
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| + | chch_t( 10,'HONO2 ', 1,'TR ',' ', <span style="color:red">'''1'''</span>, 1, 0), & ! 10 DD: 7,WD: 4, |
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| + | chch_t( 11,'H2O2 ', 1,'TR ',' ', <span style="color:red">'''1'''</span>, 1, 0), & ! 11 DD: 8,WD: 5, |
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| + | '''References''' |
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| + | # Giannakopoulos, C., M. P. Chipperfield, K. S. Law, and J. A. Pyle (1999), Validation and intercomparison of wet and dry deposition schemes using 210Pb in a global three-dimensional off-line chemical transport model, J. Geophys. Res., 104(D19), 23761–23784, doi:10.1029/1999JD900392. |
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| + | # Ganzeveld, L., and J. Lelieveld (1995), Dry deposition parameterization in a chemistry general circulation model and its influence on the distribution of reactive trace gases, J. Geophys. Res., 100(D10), 20999–21012, doi:10.1029/95JD02266. |
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| + | # Sander, R., and P. J. Crutzen (1996), Model study indicating halogen activation and ozone destruction in polluted air masses transported to the sea, J. Geophys. Res., 101(D4), 9121–9138, doi:10.1029/95JD03793. |
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| + | # M.L. Wesely, Parameterization of surface resistances to gaseous dry deposition in regional-scale numerical models, Atmospheric Environment (1967), Volume 23, Issue 6, 1989, Pages 1293-1304, ISSN 0004-6981, http://dx.doi.org/10.1016/0004-6981(89)90153-4. |
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| + | # Sanderson, M. G., Collins, W. J., Hemming, D. L. and Betts, R. A. (2007), Stomatal conductance changes due to increasing carbon dioxide levels: Projected impact on surface ozone levels. Tellus B, 59: 404–411. doi: 10.1111/j.1600-0889.2007.00277.x |
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| + | ==2D Dry Deposition Scheme== |
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depvel_defs(6,5,jpdd) |
depvel_defs(6,5,jpdd) |
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see ukca_ddeprt.F90 for allocation |
see ukca_ddeprt.F90 for allocation |
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| + | ---- |
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| + | ''Written by [[User:Nla27 | Luke Abraham]] 2013'' |
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Revision as of 10:10, 24 June 2013
Adding Dry Deposition
UKCA uses two different dry-deposition schemes:
- A simple 2D parameterisation described by Giannakopoulos (1999) [1], Ganzeveld and Lelieveld (1995)[2], and Sander and Crutzen 1996 (JGR 101 9121)[3].
- A more detailed interactive parameterisation, based on the Wesely scheme (Wesely, 1989; Sanderson 2007)[4,5]
The default is to use the 2D scheme, although it is advisable to use the interactive scheme. Within the UKCA code, whether a species is dry deposited or not is controlled in the ukca_chem_scheme.F90 file. In the chch_defs array there are lines like
chch_t( 10,'HONO2 ', 1,'TR ',' ', 1, 1, 0), & ! 10 DD: 7,WD: 4, chch_t( 11,'H2O2 ', 1,'TR ',' ', 1, 1, 0), & ! 11 DD: 8,WD: 5,
References
- Giannakopoulos, C., M. P. Chipperfield, K. S. Law, and J. A. Pyle (1999), Validation and intercomparison of wet and dry deposition schemes using 210Pb in a global three-dimensional off-line chemical transport model, J. Geophys. Res., 104(D19), 23761–23784, doi:10.1029/1999JD900392.
- Ganzeveld, L., and J. Lelieveld (1995), Dry deposition parameterization in a chemistry general circulation model and its influence on the distribution of reactive trace gases, J. Geophys. Res., 100(D10), 20999–21012, doi:10.1029/95JD02266.
- Sander, R., and P. J. Crutzen (1996), Model study indicating halogen activation and ozone destruction in polluted air masses transported to the sea, J. Geophys. Res., 101(D4), 9121–9138, doi:10.1029/95JD03793.
- M.L. Wesely, Parameterization of surface resistances to gaseous dry deposition in regional-scale numerical models, Atmospheric Environment (1967), Volume 23, Issue 6, 1989, Pages 1293-1304, ISSN 0004-6981, http://dx.doi.org/10.1016/0004-6981(89)90153-4.
- Sanderson, M. G., Collins, W. J., Hemming, D. L. and Betts, R. A. (2007), Stomatal conductance changes due to increasing carbon dioxide levels: Projected impact on surface ozone levels. Tellus B, 59: 404–411. doi: 10.1111/j.1600-0889.2007.00277.x
2D Dry Deposition Scheme
depvel_defs(6,5,jpdd)
see ASAD_MOD
6 = Number of time periods used in dry deposition i.e. summer(day,night,24h ave), winter(day,night,24h ave) - 24h aves not used
5 = Number of land use categories used in dry dep. (water,forest,grass,desert,ice) - desert not used
see ukca_ddeprt.F90 for allocation
Written by Luke Abraham 2013
