Ryosuke Yasui

MRI-ESM3.4: Description of the Meteorological Research Institute Earth System Model Version 3.4

Makoto Deushi, Hiromasa Yoshimura, L. Shogo Urakawa, Seiji Yukimoto et autres

This technical note provides a concise overview of MRI-ESM3.4, a new Earth System Model developed at the Meteorological Research Institute, Japan Meteorological Agency, for the Coupled Model Intercomparison Project Phase 7 (CMIP7). It outlines the model's formulation, focusing on changes from its …

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MRI-ESM3.4: Description of the Meteorological Research Institute Earth System Model Version 3.4

Makoto Deushi, Hiromasa Yoshimura, L. Shogo Urakawa, Seiji Yukimoto et autres

This technical note provides a concise overview of MRI-ESM3.4, a new Earth System Model developed at the Meteorological Research Institute, Japan Meteorological Agency, for the Coupled Model Intercomparison Project Phase 7 (CMIP7). It outlines the model's formulation, focusing on changes from its …

jp (code pays fourni par la source)

Development of high-resolution regional aerosol climate model: SCALE-SPRINTARS

Ryosuke Yasui, Kei Tomisawa, Yousuke Sato, Toshihiko Takemura

Abstract This study developed the integration of the Spectral Radiation-Transport Model for Aerosol Species (SPRINTARS) aerosol module into Scalable Computing for Advanced Library and Environment (SCALE), a regional meteorological and climate model which can simulate three-dimensional aerosol distribution with extremely high spatiotemporal …

jp (code pays fourni par la source)

Development of high-resolution regional aerosol climate model: SCALE-SPRINTARS

Ryosuke Yasui, Yousuke Sato, Toshihiko Takemura

jp (code pays fourni par la source)

Atmospheric Semidiurnal Solar Tide Response to Sudden Stratospheric Warmings in the JAGUAR‐DAS Whole Neutral Atmosphere Reanalysis (JAWARA) During 2004–2023

Yosuke Yamazaki, K. Sato, Dai Koshin, Ryosuke Yasui

Abstract The migrating semidiurnal solar tide (SW2) originating from the troposphere and stratosphere is a known source of variability in the thermosphere‐ionosphere system, and thus is important for accurate space weather prediction. Previous studies have established that the upward‐propagation of SW2 into …

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Interhemispheric Coupling Study by Observations and Modelling (ICSOM): Concept, Campaigns, and Initial Results

K. Sato, Yoshihiro Tomikawa, Masashi Kohma, Ryosuke Yasui et autres

Abstract An international joint research project, entitled Interhemispheric Coupling Study by Observations and Modelling (ICSOM), is ongoing. In the late 2000s, an interesting form of interhemispheric coupling (IHC) was discovered: when warming occurs in the winter polar stratosphere, the upper mesosphere in …

jp, us, au, ca, cn, de, no, gb, pe (code pays fourni par la source)

Interhemispheric Coupling Study by Observations and Modelling (ICSOM)

K. Sato, Yoshihiro Tomikawa, Masashi Kohma, Ryosuke Yasui et autres

An international joint research project, entitled Interhemispheric Coupling Study by Observations and Modelling (ICSOM), is ongoing. In the late 2000s, an interesting form of interhemispheric coupling (IHC) was discovered: when warming occurs in the winter polar stratosphere, the upper mesosphere in the …

jp, us, au, ca, cn, de, no, gb, cz, pe (code pays fourni par la source)

南北半球間結合における中層大気でのロスビー波および重力波発生の役割

Ryosuke Yasui

jp (code pays fourni par la source)

Diagnostics of a WN2‐Type Major Sudden Stratospheric Warming Event in February 2018 Using a New Three‐Dimensional Wave Activity Flux

Yayoi Harada, K. Sato, Takenari Kinoshita, Ryosuke Yasui et autres

Abstract Observational features of atmospheric fields during a zonal wave number 2‐type major sudden stratospheric warming (MSSW) event in February 2018 (MSSW18) are analyzed using the Japanese 55‐year Reanalysis, satellite measurements by a microwave limb sounder, and a new three‐dimensional wave activity …

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The Momentum Budget in the Stratosphere, Mesosphere, and Lower Thermosphere. Part I: Contributions of Different Wave Types and In Situ Generation of Rossby Waves

K. Sato, Ryosuke Yasui, Yasunobu Miyoshi

A momentum budget is examined in the stratosphere, mesosphere, and lower thermosphere using simulation data over ~11 years from a whole-atmosphere model in terms of the respective contributions of gravity waves (GWs), Rossby waves (RWs), and tides. The GW forcing is dominant …

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The Momentum Budget in the Stratosphere, Mesosphere, and Lower Thermosphere. Part II: The In Situ Generation of Gravity Waves

Ryosuke Yasui, K. Sato, Yasunobu Miyoshi

The contributions of gravity waves to the momentum budget in the mesosphere and lower thermosphere (MLT) is examined using simulation data from the Ground-to-Topside Model of Atmosphere and Ionosphere for Aeronomy (GAIA) whole-atmosphere model. Regardless of the relatively coarse model resolution, gravity …

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The momentum budget in the middle atmosphere based on a whole atmosphere model simulation over 11 years

K. Sato, Yasunobu Miyoshi, Ryosuke Yasui