Faculty Profiles - SUDO Kengo

Papers - SUDO Kengo

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The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): overview and description of models, simulations and climate diagnostics Reviewed

J.-F. Lamarque, D. T. Shindell, B. Josse, P. J. Young, K. Sudo, et al.

Geosci. Model Dev. Vol. 6 page： 179-206. 2013.1

Long-term ozone changes and associated climate impacts in CMIP5 simulations Reviewed

Eyring, V., J. M. Arblaster, I. Cionni, K. Sudo, et al.

J. Geophys. Res. Atmos. Vol. 118 page： 5029–5060 2013.1

Evaluation of ACCMIP outgoing longwave radiation from tropospheric ozone using TES satellite observations Reviewed

Bowman K. W., Shindell D. T., Worden H. M., Lamarque J. F., Young P. J., Stevenson D. S., Qu Z., de la Torre M., Bergmann D., Cameron-Smith P. J., Collins W. J., Doherty R., Dalsoren S. B., Faluvegi G., Folberth G., Horowitz L. W., Josse B. M., Lee Y. H., MacKenzie I. A., Myhre G., Nagashima T., Naik V., Plummer D. A., Rumbold S. T., Skeie R. B., Strode S. A., Sudo K., Szopa S., Voulgarakis A., Zeng G., Kulawik S. S., Aghedo A. M., Worden J. R.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 8 ) page： 4057-4072 2013

Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) Reviewed

Stevenson D. S., Young P. J., Naik V., Lamarque J. -F., Shindell D. T., Voulgarakis A., Skeie R. B., Dalsoren S. B., Myhre G., Berntsen T. K., Folberth G. A., Rumbold S. T., Collins W. J., MacKenzie I. A., Doherty R. M., Zeng G., van Noije T. P. C., Strunk A., Bergmann D., Cameron-Smith P., Plummer D. A., Strode S. A., Horowitz L., Lee Y. H., Szopa S., Sudo K., Nagashima T., Josse B., Cionni I., Righi M., Eyring V., Conley A., Bowman K. W., Wild O., Archibald A.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 6 ) page： 3063-3085 2013

Radiative forcing in the ACCMIP historical and future climate simulations Reviewed

Shindell D. T., Lamarque J. -F., Schulz M., Flanner M., Jiao C., Chin M., Young P. J., Lee Y. H., Rotstayn L., Mahowald N., Milly G., Faluvegi G., Balkanski Y., Collins W. J., Conley A. J., Dalsoren S., Easter R., Ghan S., Horowitz L., Liu X., Myhre G., Nagashima T., Naik V., Rumbold S. T., Skeie R., Sudo K., Szopa S., Takemura T., Voulgarakis A., Yoon J. -H., Lo F.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 6 ) page： 2939-2974 2013

Preindustrial to present-day changes in tropospheric hydroxyl radical and methane lifetime from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) Reviewed

Naik V., Voulgarakis A., Fiore A. M., Horowitz L. W., Lamarque J. -F., Lin M., Prather M. J., Young P. J., Bergmann D., Cameron-Smith P. J., Cionni I., Collins W. J., Dalsoren S. B., Doherty R., Eyring V., Faluvegi G., Folberth G. A., Josse B., Lee Y. H., MacKenzie I. A., Nagashima T., van Noije T. P. C., Plummer D. A., Righi M., Rumbold S. T., Skeie R., Shindell D. T., Stevenson D. S., Strode S., Sudo K., Szopa S., Zeng G.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 10 ) page： 5277-5298 2013

Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) Reviewed

Young P. J., Archibald A. T., Bowman K. W., Lamarque J. -F., Naik V., Stevenson D. S., Tilmes S., Voulgarakis A., Wild O., Bergmann D., Cameron-Smith P., Cionni I., Collins W. J., Dalsoren S. B., Doherty R. M., Eyring V., Faluvegi G., Horowitz L. W., Josse B., Lee Y. H., MacKenzie I. A., Nagashima T., Plummer D. A., Righi M., Rumbold S. T., Skeie R. B., Shindell D. T., Strode S. A., Sudo K., Szopa S., Zeng G.

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 4 ) page： 2063-2090 2013

Global premature mortality due to anthropogenic outdoor air pollution and the contribution of past climate change Reviewed

Silva Raquel A., West J. Jason, Zhang Yuqiang, Anenberg Susan C., Lamarque Jean-Francois, Shindell Drew T., Collins William J., Dalsoren Stig, Faluvegi Greg, Folberth Gerd, Horowitz Larry W., Nagashima Tatsuya, Naik Vaishali, Rumbold Steven, Skeie Ragnhild, Sudo Kengo, Takemura Toshihiko, Bergmann Daniel, Cameron-Smith Philip, Cionni Irene, Doherty Ruth M., Eyring Veronika, Josse Beatrice, MacKenzie I. A., Plummer David, Righi Mattia, Stevenson David S., Strode Sarah, Szopa Sophie, Zeng Guang

ENVIRONMENTAL RESEARCH LETTERS Vol. 8 ( 3 ) 2013

Evaluation of preindustrial to present-day black carbon and its albedo forcing from Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) (vol 13, pg 2607, 2013) Reviewed

Lee Y. H., Lamarque J. -F., Flanner M. G., Jiao C., Shindell D. T., Berntsen T., Bisiaux M. M., Cao J., Collins W. J., Curran M., Edwards R., Faluvegi G., Ghan S., Horowitz L. W., McConnell J. R., Ming J., Myhre G., Nagashima T., Naik V., Rumbold S. T., Skeie R. B., Sudo K., Takemura T., Thevenon F., Xu B., Yoon J-H

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 13 ) page： 6553-6554 2013

Evaluation of preindustrial to present-day black carbon and its albedo forcing from Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) Reviewed

ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 13 ( 5 ) page： 2607-2634 2013

Role of meteorological variability in global tropospheric ozone during 1970-2008

Sekiya Takashi, Sudo Kengo

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 117 2012.9

Global Modeling of Secondary Organic Aerosol in a Chemistry Coupled Climate Model Invited Reviewed

Kengo Sudo, Yukie Ogihara

Earozoru Kenkyu Vol. 27 ( 1 ) page： 51-61 2012.4

Simulation of urban and regional air pollution in Bangladesh Reviewed

Ibn Azkar, M. A. M. B., S. Chatani, and K. Sudo

Journal of Geophysical Research page： in press 2012.4

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

We have developed a regional scale air quality simulation using the Weather Research and Forecasting (WRF) - Community Multiscale Air Quality Model (CMAQ) to assess the suitability of such an advanced modeling system for predicting the air quality of Bangladesh and its surrounding region. The Regional Emission Inventory in Asia (REAS) was used as the emission input in this modeling approach. Both meteorological and chemical model performance were evaluated with observations including satellite data. Comparison between simulated and observed meteorological parameters revealed that the WRF can generate the necessary meteorological inputs for CMAQ. Comparison of observed and simulated concentrations of different air pollutants revealed that CMAQ greatly underestimates the concentrations of key pollutants. Comparison with satellite observations revealed that CMAQ reproduces the spatial distribution of NO2 with some underestimation in Bangladesh and India. The simulated AOD and satellite-retrieved AOD showed good temporal and spatial agreement mutually, with a correlation coefficient of 0.58. Sensitivity simulation using higher horizontal resolution emission data made by re-gridding the REAS inventory with the population distribution improved the CMAQ performance. Nevertheless, CMAQ underestimated the pollutant concentrations in Dhaka. Uncertainties in the emission inventory and in the lack of time variation in emissions input mainly contributed to the model underestimation. Model predictions show that 36-72% PM10 and 15-60% PM2.5 in Dhaka might be contributed from brick kiln emissions in monthly average of January 2004. The chemical composition of PM2.5 showed that the considerable amounts of secondary aerosols in Dhaka and carbonaceous components (particularly organic carbon) are most responsible for the model underestimation. Results suggest that improvements of emission inputs and more detailed sensitivity analysis of CMAQ model are important to assess the reliability and applicability of WRF-CMAQ modeling system in this region.

DOI： 10.1029/2011JD016509

Enhanced Mid-Latitude Tropospheric Column Ozone over East Asia: Coupled Effects of Stratospheric Ozone Intrusion and Anthropogenic Sources Reviewed

Nakatani Aya, Kondo Sayako, Hayashida Sachiko, Nagashima Tatsuya, Sudo Kengo, Liu Xiong, Chance Kelly, Hirota Isamu

JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN Vol. 90 ( 2 ) page： 207-222 2012.4

Enhanced Mid-Latitude Tropospheric Column Ozone over East Asia: Coupled Effects of Stratospheric Ozone Intrusion and Anthropogenic Sources Reviewed

Nakatani, A., S. Kondo, S. Hayashida, T. Nagashima, K. Sudo, X. Liu, K. Chance, and I. Hirota

J. Meteor. Soc. Japan Vol. 90 ( 2 ) page： 207-222 2012.1

Simultaneous assimilation of satellite NO2, O3, CO, and HNO3 data for the analysis of tropospheric chemical composition and emissions Reviewed

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

Atmospheric Chemistry and Physics Vol. 12 ( 20 ) page： 9545-9579 2012.1

Role of meteorological variability in global tropospheric ozone during 1970-2008 Reviewed

Sekiya, T. and K. Sudo

J. Geophys. Res. Vol. 117 ( D18 ) 2012.1

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

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

Atmospheric Chemistry and Physics Vol. 12 page： 5249-5257 2012.1

Global air quality and climate Reviewed

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

Chem. Soc. Rev. Vol. 41 page： 6663-6683 2012.1

Global NOx emission estimates derived from an assimilation of OMI tropospheric NO2 columns Reviewed

K. Miyazaki, H. J. Eskes, and K. Sudo

Atmos. Chem. Phys. Vol. 12 page： 2263-2288 2012

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

A data assimilation system has been developed to estimate global nitrogen oxides (NOx) emissions using OMI tropospheric NO2 columns (DOMINO product) and a global chemical transport model (CTM), the Chemical Atmospheric GCM for Study of Atmospheric Environment and Radiative Forcing (CHASER). The data assimilation system, based on an ensemble Kalman filter approach, was applied to optimize daily NOx emissions with a horizontal resolution of 2.8° during the years 2005 and 2006. The background error covariance estimated from the ensemble CTM forecasts explicitly represents non-direct relationships between the emissions and tropospheric columns caused by atmospheric transport and chemical processes. In comparison to the a priori emissions based on bottom-up inventories, the optimized emissions were higher over eastern China, the eastern United States, southern Africa, and central-western Europe, suggesting that the anthropogenic emissions are mostly underestimated in the inventories. In addition, the seasonality of the estimated emissions differed from that of the a priori emission over several biomass burning regions, with a large increase over Southeast Asia in April and over South America in October. The data assimilation results were validated against independent data: SCIAMACHY tropospheric NO2 columns and vertical NO2 profiles obtained from aircraft and lidar measurements. The emission correction greatly improved the agreement between the simulated and observed NO2 fields; this implies that the data assimilation system efficiently derives NOx emissions from concentration observations. We also demonstrated that biases in the satellite retrieval and model settings used in the data assimilation largely affect the magnitude of estimated emissions. These dependences should be carefully considered for better understanding NOx sources from top-down approaches.

DOI： 10.5194/acp-12-2263-2012

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