Table 6.
The CAM6 variables which are written to the initial files. The state variables are those that are directly changed by the assimilation. The rest evolve in response to the changes to the state variables as well as the model physics and dynamics. The “modes” in the MAM419 modal aerosol scheme are “accum”(1), “aitken”(2), “coarse”(3), and “primary_carbon”(4).
| Variable name | Description |
|---|---|
| CAM6 + DART model state variables | |
| PS | Surface pressure |
| T | Sensible temperature |
| US | Zonal wind component (on a grid staggered latitudinally 1/2 grid box) |
| VS | Meridional wind component (on a grid staggered longitudinally 1/2 grid box) |
| Q | Specific humidity |
| CLDLIQ | Cloud liquid water (grid box average) |
| CLDICE | Cloud ice (grid box average) |
| Other moisture variables | |
| NUMICE | Cloud ice number (grid box average) |
| NUMLIQ | Cloud liquid number (grid box average) |
| NUMRAI | Rain number (grid box average) |
| NUMSNO | Snow number (grid box average) |
| RAINQM | Rain amount (grid box average) |
| SNOWQM | Snow amount (grid box average) |
| Aerosols | |
| DMS | Dimethyl sulfide |
| H2O2 | H2O2 |
| H2SO4 | H2SO4 |
| SO2 | SO2 |
| SOAG | Secondary organic aerosols gas |
| MAM4 modal aerosol scheme variables | |
| bc_a[1,4] | Black carbon, modes 1 and 4 |
| dst_a[1–3] | Dust, modes 1 through 3 |
| ncl_a[1–3] | Sea salt (NaCl) , modes 1 through 3 |
| num_a[1–4] | Aerosol number density, modes 1 through 4 |
| pom_a[1,4] | Primary-organic aerosols, modes 1 and 4 |
| soa_a[1,2] | Secondary-organic aerosols, modes 1 and 2 |
| so4_a[1–3] | Sulfate (SO4 modes 1 through 3 |