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Chapter 8. Methane oxidation
IFS documentation Front Page
Chapter 1. Overview
Chapter 2. Radiation
Chapter 3. Turbulent diffusion and interactions with the surface
Chapter 4. Subgrid-scale orographic drag
Chapter 5. Convection
Chapter 6. Clouds and large-scale precipitation
Chapter 7. Land suface parametrization
Chapter 8. Methane oxidation
Chapter 9. Climatological data
REFERENCES
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8.5 Code
The calculations for methane oxidation and photolysis of water vapour are performed in subroutine METHOX.
This routine calculates the tendency of water vapour due to methane oxidation and due to photolysis following (8.8). The order of the calculations is as follows:
| • find time-scale for methane oxidation following (8.6) |
| • solve first part of (8.8) |
| • find time-scale for water vapour photolysis following (8.10) |
| • solve second part of (8.8) |
The setup of the constants used in METHOX is performed in SUMETHOX which is called from SUPHEC. The constants are kept in module YOEMETH. The controlling switch for the methane oxidation is LEMETHOX which is part of namelist NAEPHY.
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05.04.2002 |
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