edu.ucar.opensky::articles:17482 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T13:36:33.786156 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7k075kr Effects of cloud microphysics on monsoon convection and its environments over the South China Sea: A two-dimensional cloud-resolving modeling stud 2011-04-14T00:00:00Z publication https://n2t.org/ark:/85065/d7k075kr https://doi.org/10.1029/2010JD014662 Fu, D. author Guo, X. author Liu, Changhai author UCAR/NCAR - Library publisher The Weather Research Forecast (WRF) model imposed by the large-scale advective forcing derived from observed data representing an average of gridded data fields over the South China Sea Monsoon Experiment (SCSMEX) was used to study the effects of cloud microphysics on monsoon convective systems and its formation environment over the tropical ocean. The temporal variation of the WRF model-simulated rain rate is in good agreement with the observed data. The sensitivity experiments with ice runs and ice-free runs show that the ice run can produce less rain prior to and during the onset of the monsoon period: the mean decrease can be −5 mm d−1 and the maximum decrease can be more than 60 mm d−1 during the post onset of the monsoon period, and about 6% decrease of the domain-averaged accumulative rainfall. The mechanism that induces this phenomenon was investigated through the budget of cloud radiation forcing, the variations of latent heating and cooling, and that of terminal fall velocities of cloud hydrometeors due to phase change in this paper, and show that at the top of atmosphere the net cloud radiation forcing on both ice cloud and water cloud can be neglected. However, on the ocean surface the ice run may reduce about 14% of downward shortwave radiation and increase about 1.6% of downward longwave radiation on average, which can produce a net cooling process and directly reduce the sensible and latent heat fluxes on the ocean surface and result in the decrease of precipitation over the whole region. Therefore, the effect of ice microphysics is dominated through the radiation processes instead of microphysics itself. In addition, ice cloud can lead to the atmosphere being warmer and drier at middle and upper levels and stabilize the atmosphere and suppress the further development of convections. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. None eng geoscientificInformation