Time-dependent, non-monotonic response of warm convective cloud fields to changes in aerosol loading

摘要: Abstract. Large eddy simulations (LESs) with bin microphysics are used here to study cloud fields' sensitivity changes in aerosol loading and the time evolution of this response. Similarly known response a single cloud, we show that mean field properties change non-monotonic trend, an optimum concentration for which reaches its maximal water mass or rain yield. This trend is result competition between processes encourage development versus those suppress it. However, another layer complexity added when considering clouds' impact on field's thermodynamic how dependent loading. Under polluted conditions, suppressed non-precipitating clouds act increase atmospheric instability. results warming lower part cloudy (in there net condensation) cooling upper (net evaporation). Evaporation at raises humidity these levels thus amplifies next generation (preconditioning effect). On other hand, under clean precipitating drive sub-cloud due evaporation. These two effects stabilize boundary (consumption instability). The affects return, as shown by migration optimal toward higher values.