Table 3 List of cloud microphysics and macrophysics parameters used in this study.
Parameter name | Description | Range | Remarks | ||
|---|---|---|---|---|---|
Low | Default | High | |||
Parameters in cloud microphysics | |||||
dcs | Auto-conversion size threshold for ice to snow | 1e−4 | 2.5e−4 | 5e−4 | Affect mainly to the high cloud distribution; higher \(dcs\)-value corresponds to the lesser conversion of cloud ice to snow |
eii | Collection efficiency aggregation ice | 0.001 | 0.1 | 1.0 | Affect mainly to the ice water content |
ecr | Collection efficiency, accretion of cloud water by rain | 0.5 | 1.0 | 1.5 | Affect mainly to the cloud liquid water content |
ac | Fall speed parameter for cloud water | 1.5e+7 | 3e+7 | 4.5e+7 | Affect mainly to the cloud water content |
ai | Fall speed parameter for stratiform cloud ice | 350 | 700 | 1400 | Affect mainly to the ice water content |
as | Fall speed parameter for stratiform snow | 5.860 | 11.72 | 23.44 | Affect the snow and the ice water content; larger \(as\)-values corresponds to the larger cloud water-fall speed |
cdnl | cloud droplet number limiter | 0 | 0 | 1e−6 | Affect mainly to the cloud droplet number concentration |
wsubi | Minimum subgrid vertical velocity for ice nuclei | 1e-6 | 0.001 | 0.2 | Affect mainly to the cloud droplet number concentration |
wsub | Minimum subgrid vertical velocity for liquid nuclei | 0 | 0.2 | 1.0 | Affect mainly to the cloud droplet number concentration |
Parameters in cloud macrophysics | |||||
rhminl | Threshold relative humidity for stratiform low clouds | 0.80 | 0.8875 | 0.99 | Affect mainly to the low clouds; higher \(rhminl\)-value corresponds to the lesser low-level stable clouds below 700Â hPa |
rhminh | Threshold relative humidity for stratiform high clouds | 0.65 | 0.80 | 0.85 | Affect mainly to the high clouds; higher \(rhminh\)-value corresponds to the lesser high-level stable liquid clouds above 400Â hPa |
rhminl-adj-land | rhminl adjustment for snow-free land | 0.05 | 0.10 | 0.15 | Affect mainly to the low-level clouds over the snow-free land |
icecrit | Critical relative humidity for ice clouds | 0.47 | 0.93 | 1.4 | Affect mainly to the ice clouds; higher \(icecrit\)-value corresponds to lesser ice clouds |
dp1 | Parameter for deep convection cloud fraction | 0.05 | 0.10 | 0.15 | Affect mainly to the deep convective cloud fraction |
dp2 | Parameter for deep convection cloud fraction | 250 | 500 | 750 | Affect mainly to the deep convective cloud fraction |
sh1 | Parameter for shallow convection cloud fraction | 0.02 | 0.04 | 0.06 | Affect mainly to the shallow convective cloud fraction |
sh2 | Parameter for shallow convection cloud fraction | 250 | 500 | 750 | Affect mainly to the shallow convective cloud fraction |
