HR: 1330h
AN: A53A-03    [Abstracts]
TI: The Enhancement of Condensational Growth of Cloud Droplets in Melting Layer Simulated by a Non-hydrostatic Model
AU: * Hashimoto, A
EM: ahashimo@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Murakami, M
EM: mamuraka@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Muroi, C
EM: cmuroi@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kanada, S
EM: skanada@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Wakazuki, Y
EM: ywakazki@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Yasunaga, K
EM: kyasunag@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kato, T
EM: tkato@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kurihara, K
EM: kkurihar@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Yoshizaki, M
EM: myoshiza@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Noda, A
EM: noda@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AB: We have conducted numerical simulations with the non-hydrostatic regional climate model which has been developed on the basis of Japan Meteorological Agency Non-Hydrostatic Model to study the Baiu front in global warming climate as well as that in present climate. In those simulations, the condensational growth of cloud droplets was found to be enhanced in melting layer so that the heating by condensation exceeded the cooling due to the melting of snow particles in the layer. This talk focuses on how this enhancement of condensation occurred. As a result of sensitivity test, the effect of sub-grid eddy diffusion as well as the cooling by the snow melting is found to be important. Turbulent kinetic energy (TKE) has large value where corresponds to the region of the enhancement of condensation. TKE induces the sub-grid eddy diffusion which produces super-saturation so as to enhance the condensational growth of cloud droplets in the melting layer in the experiments.
DE: 0320 Cloud physics and chemistry
DE: 3329 Mesoscale meteorology
DE: 3379 Turbulence
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly