Faculty Profiles - SUDO Kengo

Papers - SUDO Kengo

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Anthropogenic changes in the surface all-sky UV-B radiation through 1850-2005 simulated by an Earth system model Reviewed

Watanabe S., Takemura T., Sudo K., Yokohata T., Kawase H.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 12 ( 11 ) page： 5249-5257 2012

Global air quality and climate Reviewed

Fiore Arlene M., Naik Vaishali, Spracklen Dominick V., Steiner Allison, Unger Nadine, Prather Michael, Bergmann Dan, Cameron-Smith Philip J., Cionni Irene, Collins William J., Dalsoren Stig, Eyring Veronika, Folberth Gerd A., Ginoux Paul, Horowitz Larry W., Josse Beatrice, Lamarque Jean-Francois, MacKenzie Ian A., Nagashima Tatsuya, O'Connor Fiona M., Righi Mattia, Rumbold Steven T., Shindell Drew T., Skeie Ragnhild B., Sudo Kengo, Szopa Sophie, Takemura Toshihiko, Zeng Guang

CHEMICAL SOCIETY REVIEWS Vol. 41 ( 19 ) page： 6663-6683 2012

Simultaneous assimilation of satellite NO2, O-3, CO, and HNO3 data for the analysis of tropospheric chemical composition and emissions Reviewed

Miyazaki K., Eskes H. J., Sudo K., Takigawa M., van Weele M., Boersma K. F.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 12 ( 20 ) page： 9545-9579 2012

A study of uncertainties in the sulfate distribution and its radiative forcing associated with sulfur chemistry in a global aerosol model, Reviewed

Goto, D., Nakajima, T., Takemura, T., and Sudo, K.

Atmospheric Chemistry and Physics Vol. 11 page： 10889-10910 2011.11

Influences of the variation in inflow to East Asia on surface ozone over Japan during 1996-2005 Reviewed

Chatani, S. and K. Sudo

Atmospheric Chemistry and Physics Vol. 11 page： 8745-8758 2011.11

Future changes in tropospheric ozone under Representative Concentration Pathways (RCPs) Reviewed

Kawase, H., T. Nagashima, K. Sudo, and T. Nozawa

Geophys. Res. Lett. Vol. 38 ( L05801 ) 2011.11

Future projections of surface UV-B in a changing climate Reviewed

Watanabe, S., K. Sudo, T. Nagashima, T. Takemura, H. Kawase, and T. Nozawa

J. Geophys. Res. Vol. 116 ( D16118 ) 2011.11

The impact of soil uptake on the global distribution of molecular hydrogen: chemical transport model simulation Reviewed

Yashiro, H., K. Sudo, Yonemura, S., and Takigawa, M.

Atmospheric Chemistry and Physics Vol. 11 page： 6701-6719 2011.11

Future projections of surface UV-B in a changing climate Reviewed

Watanabe S., Sudo K., Nagashima T., Takemura T., Kawase H., Nozawa T.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 116 2011.8

Future changes in tropospheric ozone under Representative Concentration Pathways (RCPs) Reviewed

Kawase Hiroaki, Nagashima Tatsuya, Sudo Kengo, Nozawa Toru

GEOPHYSICAL RESEARCH LETTERS Vol. 38 2011.3

MIROC-ESM 2010: model description and basic results of CMIP5-20c3m experiments, Reviewed

Watanabe, S., Hajima, T., Sudo,K., Nagashima, T., Takemura, T., Okajima, H., Nozawa, T., Kawase, H., Abe, M., Yokohata, T., Ise, T., Sato, H., Kato, E., Takata, K., Emori, S., and Kawamiya, M.:

Geosci. Model Dev Vol. 4 ( 2256 ) page： 845-872 2011

Evaluation of methane emissions from West Siberian wetlands based on inverse modeling Reviewed

H-S. Kim, S. Maksyutov, M. V. Glagolev, T. Machida, P. K. Patra, K. Sudo and G. Inoue

Environ. Res. Lett. Vol. 6 ( 035201 ) 2011

A study of uncertainties in the sulfate distribution and its radiative forcing associated with sulfur chemistry in a global aerosol model Reviewed

Goto D., Nakajima T., Takemura T., Sudo K.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 11 ( 21 ) page： 10889-10910 2011

Evaluation of methane emissions from West Siberian wetlands based on inverse modeling Reviewed

Kim H-S, Maksyutov S., Glagolev M. V., Machida T., Patra P. K., Sudo K., Inoue G.

ENVIRONMENTAL RESEARCH LETTERS Vol. 6 ( 3 ) 2011

The impact of soil uptake on the global distribution of molecular hydrogen: chemical transport model simulation Reviewed

Yashiro H., Sudo K., Yonemura S., Takigawa M.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 11 ( 13 ) page： 6701-6719 2011

MIROC-ESM 2010: model description and basic results of CMIP5-20c3m experiments Reviewed

Watanabe S., Hajima T., Sudo K., Nagashima T., Takemura T., Okajima H., Nozawa T., Kawase H., Abe M., Yokohata T., Ise T., Sato H., Kato E., Takata K., Emori S., Kawamiya M.

GEOSCIENTIFIC MODEL DEVELOPMENT Vol. 4 ( 4 ) page： 845-872 2011

Influences of the variation in inflow to East Asia on surface ozone over Japan during 1996-2005 Reviewed

Chatani S., Sudo K.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 11 ( 16 ) page： 8745-8758 2011

Influences of the variation in inflow to East Asia on surface ozone over Japan during 1996-2005 Reviewed

S.Chatani and K.Sudo

Atmospheric Chemistry and Physics Discussions Vol. 10 page： 30823-30856 2010.12

The relative importance of various source regions on East Asiansurface ozone Reviewed

T.Nagashima, T.Ohara, K.Sudo, H.Akimoto

Atmospheric Chemistry and Physics Vol. 10 page： 11305-11322 2010.11

Language：English Publishing type：Research paper (scientific journal)

We estimated the source-receptor relationship
for surface O3 in East Asia during the early 2000s using
a method that tags O3 tracers according to their region of
chemical production (tagged tracer method) with a global
chemical transport model. The estimation demonstrated the
importance of intracontinental transport of O3 inside East
Asia as well as of the transport of O3 from distant source
regions.

Coupled effects of land use and aerosols changes and their impacts on Asian climate Invited Reviewed

Kengo Sudo, Kumiko Takata, Toshihiko, Takemura, Hiroshi Kanzawa, Tetsuzo Yasunari

Low Temperature Science Vol. 68 page： 129-136 2010.3

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

This study assesses the roles of aerosols in the past/present changes in Asian climate and monsoon, isolating impacts of individual aerosol components in the framework of the CCSR/NIES/FRCGC climate model (MIROC). Many recent studies suggest that increases in anthropogenic aerosols such as black carbon and sulfate may play a crucial role in Asian climate change as observed. Our previous studies also demonstrate the significance of aerosol increases (sulfate and carbonaceous aerosols) in the simulated precipitation changes in Asia (e.g., Arai et al., 2009). In this study, we particularly focus on the changes of nitrate and secondary organic aerosols (SOA) which are tightly linked to land use change in regions like Asia, but not treated in our previous aerosol studies. We newly introduced simulation of nitrate aerosol in our climate model. Our simulation shows that there are anomalously high concentrations of nitrate aerosol in South Asia (particularly around India and Bangladesh), coming from abundant ammonium and less sulfate components in this region. In India, free tropospheric mixing ratio and number concentration of nitrate in fine mode are both larger than those of sulfate in winter to early summer. Our study estimates large cooling (1-2 W m-2) in South Asia due to nitrate increase in terms of direct radiative forcing for 1850-2000. This result suggests nitrate aerosol may play an important role in the observed changes in Asian monsoon. In addition, we estimate changes in biogenic VOCs emissions associated with land use change during 1850-2000; biogenic VOCs like terpenes are important precursors of SOA. We estimate significant reduction (50-70%) in terpenes and other VOCs emissions in the central Eurasia, North America, and Asia due to intense cultivation and deforestation in these areas. Responding to the VOCs decreases during 1850-2000, our model calculates large reduction of SOA, leading to a positive direct radiative forcing (warming) of 0.5-1 W m-2 in Sou

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Papers - SUDO Kengo