Sec34 emissions
The emission data required by UKCA are currently (vn7.7) handled through the UM ancillary system as 'User defined' items. This puts a limitation on the number of emission species. With the addition of chemistry schemes and enhancement UKCA of itself, there is likely to be an increase in the number as well as complexity (vertical/time profiles, source-wise grouping, ..) of the emissions. Shifting these to Section 34 will give the users more flexibility in handling the emissions through UKCA. This process was actually initiated a while ago and a few of the emission items were 'reserved' in Section 34 as well as the UM ancillary system. This list however, now needs to be revisited in view of the recent and planned developments.
The Table below lists the proposed emission species under Section 34 and their requirement for the existing and near-future chemistry schemes.
| Item No. | Emission Species | Std. Trop. Chem | Trop Chem + Isoprene |
Aerosol Chem | Extended Trop. Chem |
Regional AQ Chem |
Strat. Chem | CHEST |
|---|---|---|---|---|---|---|---|---|
| 180 | NOX SURFACE EMISSION (AS NO2) | Y | Y | |||||
| 181 | CH4 SURFACE EMISSION | Y | Y | |||||
| 182 | CO SURFACE EMISSION | Y | Y | |||||
| 183 | HCHO SURFACE EMISSION | Y | Y | |||||
| 184 | C2H6 SURFACE EMISSION | Y | Y | |||||
| 185 | C3H8 SURFACE EMISSION | Y | Y | |||||
| 186 | CH3COCH3 SURFACE EMISSION | Y | Y | |||||
| 187 | CH3CHO SURFACE EMISSION | Y | Y | |||||
| 188 | C5H8 (Isoprene) SURFACE EMISSION | Y | ||||||
| 189 | H2 SURFACE EMISSION | |||||||
| 190 | NOX AIRCRAFT EMISSION AS NO2 | Y | Y | |||||
| 191 | N2O SURFACE EMISSION | |||||||
| 192 | CFCL3 (CFC-11) SURFACE EMISSION | |||||||
| 193 | CF2CL2 (CFC-12) SURFACE EMISSION | |||||||
| 194 | CFC-113 SURFACE EMISSION | |||||||
| 195 | CH3BR SURFACE EMISSION | |||||||
| 196 | CH3CL SURFACE EMISSION | |||||||
| 197 | CF2CLBR (H-1211) SURFACE EMISSION | |||||||
| 198 | CCL4 SURFACE EMISSION | |||||||
| 199 | CHF2CL (HCFC-22) SURFACE EMISSION | |||||||
| 200 | CH3CCL3 SURFACE EMISSION | |||||||
| 201 | CF3BR (H-1301) SURFACE EMISSION | |||||||
| 202 | SO2 SURFACE EMISSION | |||||||
| 203 | DMS SURFACE EMISSION | |||||||
| 204 | H2S SURFACE EMISSION | |||||||
| 205 | CS2 SURFACE EMISSION | |||||||
| 206 | COS SURFACE EMISSION | |||||||
| 207 | NH3 SURFACE EMISSION | |||||||
| 208 | RADON-222 SURFACE EMISSION | |||||||
| 209 | SO2 HIGH LEVEL EMISSION | |||||||
| 210 | SO2 VOLCANIC EMISSION | |||||||
| 211 | SO2 BIOMASS EMISSION | |||||||
| 212 | C4H10 SURFACE EMISSION | |||||||
| 213 | C2H4 SURFACE EMISSION | |||||||
| 214 | C3H6 SURFACE EMISSION | |||||||
| 215 | TOLUENE SURFACE EMISSION | |||||||
| 216 | O-XYLENE SURFACE EMISSION | |||||||
| 217 | CH3OH SURFACE EMISSION | |||||||
| 218 | MONOTERPENE SURFACE EMISSION | |||||||
| 219 | SESQUITERPENE SURFACE EMISSION | |||||||
| 220 | BLACK CARBON EMISSION FOSSIL FUEL | |||||||
| 221 | ORGANIC CARBON EMISSION FOSSIL FUEL | |||||||
| 222 | BLACK CARBON EMISSION BIOFUEL | |||||||
| 223 | ORGANIC CARBON EMISSION BIOFUEL | |||||||
| 224 | BLACK CARBON EMISSION BIOMASS | |||||||
| 225 | ORGANIC CARBON EMISSION BIOMASS | |||||||
| 226 | PRESCRIBED DUST NUMBER EMISS | |||||||
| 227 | PRESCRIBED DUST EMISS MEAN RADIUS | |||||||
| 228 | PRESCRIBED SEA-SALT NUMBER EMISS | |||||||
| 229 | PRESCRIBED SEA-SALT EMIS MEAN RADIUS |
