HR: 1330h
AN: A52C-0802 [PDF]
TI: The Solar Cycle Variation of Ozone and Other Chemical Species in the Stratosphere Simulated With a 3-D
Chemistry-Climate Model
AU: * Sekiyama, T T
EM: tsekiyam@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 3050052
Japan
AU: Shibata, K
EM: kshibata@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 3050052
Japan
AU: Deushi, M
EM: mdeushi@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 3050052
Japan
AU: Orito, K
EM: korito@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 3050052
Japan
AU: Kodera, K
EM: kodera@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, 3050052
Japan
AB:
Photochemical reactions in the atmosphere are induced by ultraviolet (UV) radiation from the sun. Radiation from the sun
shows an 11-year oscillation, in which total irradiance changes are relatively small. But more than 10 % irradiance changes
occur in ultraviolet (UV) radiation. The photochemical reactions, therefore, are influenced by the solar cycle variation. The
response of the stratospheric ozone particularly could have an impact on Earth's climate.
We have analyzed the results of a three-dimensional chemistry-climate model of the Meteorological Research Institute (MRI) in
order to evaluate the sensitivity of ozone and other chemical species in the stratosphere to the solar cycle variation.
The dynamical module of the model is based on an atmospheric general circulation model (AGCM), which is developed by MRI and
the Japan Meteorological Agency (JMA). The chemical module includes 49 chemical species, 34 photolysis reactions, 79 gas
phase reactions, 5 heterogeneous reactions on polar stratospheric clouds (PSCs), and 2 heterogeneous reactions on sulfate
aerosols. Chemical species are transported with semi-Lagrangian scheme.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 1610 Atmosphere (0315, 0325)
DE: 1650 Solar variability
DE: 3337 Numerical modeling and data assimilation
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting