| BADC Metadata | |
|---|---|
| Data set name | SLIMCAT Reference Atmosphere for UTLS-Ozone |
| Data set location | BADC archive /badc/slimcat/data/UTLS_Ref_Atm/ |
| NERC Thematic Programme | Upper troposphere / Lower Stratosphere Ozone (UTLS-Ozone) |
| Project | No particular project. This data set is provided as a support to the UTLS programme. |
| Data provider | Dr Martyn Chipperfield |
| Data set version | March 2002 |
| Compiled by | Dr Martyn Chipperfield |
| Date | 11 March 2002 |
SLIMCAT
Three-dimensional (3-D) chemistry transport model (CTM).
Please see http://www.lec.leeds.ac.uk/~martyn/slimcat.html.
Start time: October 1991.
Forcing: UK Met Office analyses.
The following computed variables are recorded in the data files.
Chemical fields are stored as volume mixing ratios.
| Temp | Temperature | (K) | ||
| Pres | Pressure | (Pa) | ||
| Alt | Altitude | (km) | ||
| Theta | Potential Temperature | (K) | ||
| PV | Potential Vorticity | (x1e6 SI units) | ||
| Heat | ||||
| O3 | ||||
| O1D | O(1D) | |||
| O3P | O(3P) | |||
| Cly | = ClOx+HCl+ClONO2+HOCl+OClO | |||
| ClOx | = Cl+ClO+2Cl2O2 | |||
| ClO | ||||
| Cl | ||||
| Cl2O2 | ||||
| OClO | ||||
| HCl | ||||
| ClONO2 | ||||
| HOCl | ||||
| Bry | = Br+BrO+HBr+HOBr+BrONO2+BrCl | |||
| Br | ||||
| BrO | ||||
| BrONO2 | ||||
| BrCl | ||||
| HOBr | ||||
| HBr | ||||
| NOy | = N+NO+NO2+NO3+HNO3+2N2O5+ClONO2+HNO4 | |||
| N | ||||
| NO | ||||
| NO2 | ||||
| NO3 | ||||
| N2O5 | ||||
| HNO3 | ||||
| HNO4 | ||||
| H | ||||
| OH | ||||
| HO2 | ||||
| H2O2 | ||||
| CH2O | ||||
| CH3OOH | ||||
| H2O | ||||
| N2O | ||||
| CH4 | ||||
| CO | ||||
| Horizontal: | Globe | |
| Vertical: | Stratosphere | |
| Time: | One year (1997) |
| Latitude: | 5 degrees (from -87.5 to 87.5, negative latitudes in Southern Hemisphere) | |
| Longitude: | 7.5 degrees (from 0 to 352.5 east) | |
| Height: | The model uses 18 isentropic levels. The vertical coordinate in the data files is the globally averaged altitude - to make it easier to generate plots with NetCDF software. The real lat/lon-dependent altitude is given in the ALT field. The THETA field gives the real model theta levels (which are constant with latitude/longitude). | |
| Time: | 1 month (one model output near the middle of each month) |
NetCDF (binary)
12 files, 5.35 Mbytes each
| slim_ddmmyy_198.nc | where | yy = 97 | ||
| mm = 01, 02, ..., 11, 12 | ||||
| dd = day number near middle of month (10, 11, 12, 13, 18 or 19) |
The 3-D fields listed under Recorded variables, as computed
at one output time.
Example: slim_100897_198.nc contains the model output on the
10th of August 1997.
Martyn Chipperfield
University of Leeds
martyn@env.leeds.ac.uk