Session Details
[A-AS08]Atmospheric Chemistry
Fri. May 29, 2026 5:15 PM - 7:00 PM JST
Fri. May 29, 2026 8:15 AM - 10:00 AM UTC
Fri. May 29, 2026 8:15 AM - 10:00 AM UTC
Poster Hall Exhibition Hall 7&8, Makuhari Messe_7
convener:Shinichi Enami(University of Tsukuba), Taku Umezawa(Tohoku University), Kazuyo Yamaji(Kobe University), Sakiko Ishino(Kanazawa University), Manabu Shiraiwa(University of California Irvine), Kazuyuki Miyazaki(NASA Jet Propulsion Laboratory)
This session provides a forum for the presentation of the broad spectrum of tropospheric and stratospheric chemistry, including various research topics (e.g., dynamical processes, air quality and climate), approaches (modeling, field measurements, remote sensing, and laboratory studies), and species (gas and aerosol). This session also provides an opportunity for discussing possible future collaboration with other research fields relevant to atmospheric chemistry.
[AAS08-P01]Optimization of Black Carbon Emissions in Japan through Regional Chemical Transport Modeling and Nationwide Monitoring
*Kazuyo Yamaji1, Yuichi Furuyashiki1, Satoru Chatani2, Tatsuya SAKURAI3, Hikari Shimadera4, Syuichi Itahashi5, Takashi Sekiya6, Yugo Kanaya6 (1.Kobe University, 2.National Institute for Environmental Studies, 3.Meisei University, 4.The University of Osaka, 5.Kyushu University, 6.Japan Agency for Marine-Earth Science and Technology)
[AAS08-P02]Development of NISMON-CO: inverse analysis system of atmospheric CO for estimating combustion emissions
*Yosuke Niwa1, Kohei Ikeda1, Suman Maity1, Daisuke Goto1, Hisashi Yashiro1, Yousuke Yamashita1, Jagat Bisht1, Tatsuya Nagashima1 (1.National Institute for Environmental Studies)
[AAS08-P03]High resolution CO2 simulation around the Takayama forest in central Japan
*Asaka Hasegawa1,2, Ryoichi Imasu1, Yousuke Sato3, Qiao Wang1, Yutaka Arai1, Shohei Murayama2,4, Hiroaki Kondo2, Shigeyuki Ishidoya2, Takahisa Maeda2 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National Institute of Advanced Industrial Science and Technology, 3.Graduate School of Engineering, The University of Osaka, 4.Dokkyo University)
[AAS08-P04]Variations in atmospheric CH4 concentration since the Industrial Revolution from the SE-Dome II ice core, southeastern Greenland
*Mai Suzuki1, Ikumi Oyabu2,1, Kenji Kawamura2,1, Satoshi Sugawara3, Taku Umezawa4, Yoshinori Iizuka5 (1.The Graduate University for Advanced Studies, 2.National Institute of Polar Research, Research Organization of Information, 3.Miyagi University of Education, 4.Graduate School of Science, Tohoku University, 5.Institute of Low Temperature Science, Hokkaido University)
[AAS08-P05]Assessing Measurement Consistency of the IMPROVE Elements in PM2.5 Over the Past Three Decades
*Nicole P Hyslop1, Jiayuan Wang1, Xiaolu Zhang1, Yongjing Zhao1 (1.University of California Davis)
[AAS08-P06]Validation of Pandora NO2 remote sensing observation
*Sumire Ishii1, Kazuyuki Kita1, Tamaki Fujinawa2, Satoshi Inomata2, Takafumi Sugita2, Astrid Müller2, Kei Shiomi3, Hiroshi Tanimoto2 (1.College of Science, Ibaraki university, 2.National Institute for Environmental Studies, 3.Earth Observation Research Center, Japan Aerospace Exploration Agency)
[AAS08-P07]Temporal variations of some trace species observed with FTIR at Tsukuba
*Isao Murata1, Isamu Morino2 (1.Graduate School of Environmental Studies, Tohoku University, 2.National Institute for Environmental Studies)
[AAS08-P08]Clay-Mineral-Promoted Oxidation of Sulfite in Aqueous Aerosol Systems
*Ou Langying1, Yoshio Takahashi1 (1.The University of Tokyo)
[AAS08-P09]Size Segregated Characterizations of Iron in Aerosols in the East Asian Outflow in Winter-
Spring Seasons: Source Apportionment and Evolutions of Water-Soluble Fraction
*Takuma Miyakawa1, Chunmao Zhu1, Morihisa Yokokawa2, Mitsunobu Mukawa3, Yugo Kanaya1 (1.Japan Agency for Marine-Earth Science and Technology, 2.Sibata Scientific Technologies, 3.Murata Keisokuki Service)
[AAS08-P10]Field measurements of methane flux using a portable OA-ICOS instrument in the Minami Kanto gas field
*Tatsuki Murakami1, Hattori Masayoshi1, Kaoruko Nagano1, Xuda Zhu1, Tianhong Zhao1, Cai Tianyu1, Michito Shimo2, Kenichi Tonokura1 (1.The University of Tokyo, 2.Fukada Geological Institute)
[AAS08-P11]Ozone formation sensitivity based on the secondary formaldehyde-to-nitrogen dioxide ratio (FNRsec) derived from ground-based remote sensing measurements and a chemical transport model
*Nguyen Doan Thien Chi1, Hiroshi Tanimoto1, Satoshi Inomata1, Kohei Ikeda1, Yange Deng1, Royston Uning1, Tamaki Fujinawa1, Astrid Müller1, Masatomo Fujiwara2, Shungo Kato3, Hisahiro Takashima4 (1.National Institute for Environmental Studies, Japan, 2.Faculty of Environmental Earth Science, Hokkaido University, Japan, 3.Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, Japan, 4.Faculty of Science, Fukuoka University, Japan)
[AAS08-P12]Quantitative Evaluation of Wet Scavenging of Near Surface Black Carbon in Urban Atmospheres
*Kamiya Yoshikazu1, Hitoshi Irie1, Morino Yu3, Pradeep Khatri2 (1.Chiba University Center for Environmental Remote Sensing, 2.Soka University, 3.National Institute for Environmental Studies)
[AAS08-P13]Applicability of ground-based remote sensing as a proxy for identifying new particle formation events in winter 2026
*Jiyun Heo1, Yonghwan Lee2, Yongjoo Choi1, Greem Lee3, Seokjun Seo3 (1.Hankuk University of Foreign Studies, 2.KOTITI Testing & Research Institute, 3.National Institute of Environmental Research)
[AAS08-P14]Formation Mechanisms of Secondary Inorganic Aerosols in PM2.5 at Yongin, Korea, Downwind of Seoul, during winter 2026
*Huijae Seong1, Seora Woo1, Jiyi Lee2, Yongjoo Choi1 (1.Department of Environmental Sciences, Hankuk University of Foreign Studies, Yongin, South Korea, 2.Department of Environmental Sciences and Engineering, Ewha Women University, Seoul, South Korea)
[AAS08-P15]Optical and Chemical Properties of Brown Carbon in PM2.5 at Yongin, Korea, Downwind of Seoul, during Winter 2026
*Minseo Lee1, Chisung Yun1, Yongjoo Choi1, Greem Lee2 (1.Department of Environmental Sciences, Hankuk University of Foreign Studies, 2.Air Quality Environment Research Division, National Institute of Environmental Research, Incheon, Republic of Korea)
[AAS08-P16]Apportionment of primary and secondary carbonaceous aerosols in Seosan, suburban site, Korea in winter of 2026
*jiyoung Choi1, Seokjun Seo2, Greem Lee2, Yongseok jeon3, Yongjoo Choi1 (1.Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, South Korea, 2.Air Quality Research Division, National Institute of Environmental Research, Incheon, Republic of Korea, 3.APM Engineering Co., Ltd., Seoul, Republic of Korea)
[AAS08-P17]Vertical distribution of volatile organic compounds, NO2, and O3 at the Tall Tower in Incheon, Korea
*Hajung Kim1, Seora Woo1, Gangnam Cho2, Rani Jung2, Yongjoo Choi1 (1.HUFS, 2.NIER)
[AAS08-P18]Influence of ENSO Teleconnection on Surface Ozone Exceedances in Colorado’s Northern Front Range
*Joshua Richards1, Gary Morris2, Irina Petropavlovskikh3, Belay Demoz1 (1.University of Maryland, Baltimore County, 2.NOAA Global Monitoring Lab, 3.CIRES)
[AAS08-P19]Monitoring the movement of volcanic ash after the Sakurajima eruption using Himawari satellite and X-band radar images
*Shinto Yokoyama1, Masafumi Ohashi1 (1.Kagoshima University)
[AAS08-P20]Integration of Satellite Embeddings and Machine Learning for Enhanced O3 Estimation via Bayesian Maximum Entropy
*Yi Lun Hung1, Hwa Lung Yu1 (1.Department of Bioenvironmental Systems Engineering, National Taiwan University)
[AAS08-P21]Model analysis of long-range transport of black carbon from India to the Arctic
*Kohei Ikeda1, Yange Deng1, Hiroshi Tanimoto1 (1.National Institute for Environmental Studies)
[AAS08-P22]Aerosol cycles in the coastal Antarctic regions
*Keiichiro Hara1, Nanami Mikami1, Kazuo Osada2, Naohiko Hirasawa3, Takashi Yamanouchi3, Masataka Shiobara3 (1.Fukuoka University, 2.Nagoya University, 3.National Institute of Polar Research)
[AAS08-P23]Evaluation of cloud coverage estimation within GOSAT-2/TANSO-FTS-2 FOV by the GOSAT-2 onboard RGB camera
*Masashi Hirose1, Naoko Saitoh1 (1.Center for Environmental Remote Sensing, Chiba University)
[AAS08-P24]A Comparison of Central Tendency Measures for Estimating Annual Averages of Atmospheric Pollutant Concentrations based on data from Russian EANET sites
*Ekaterina Zhigacheva1, Vladimir Ivanov1, Ekaterina Pozdnyakova1, Sergey Gromov1,2 (1.Institute of Global Climate and Ecology, Moscow, 2.Institute of Geography, Russian Academy of Sciences, Moscow)
[AAS08-P25]Spatiotemporal variations of the atmospheric O2 and CO2 over the Southern Ocean observed onboard R/V Shirase
*Daisuke Goto1, Shinji Morimoto2, Shigeyuki Ishidoya3 (1.National Institute of Polar Research, 2.Graduate School of Science, Tohoku University, 3.National Institute of Advanced Industrial Science and Technology)
[AAS08-P26]Investigation and Interpreting Outlier High Concentrations of Carbon-Containing Aerosols in Atmospheric Air at the EANET Site Listvyanka
*Veronica Bezdenezhnykh1, Ekaterina Zhigacheva1, Sergey Gromov1,2 (1.Yu. A. Izrael Institute of Global Climate and Ecology, 2.Institute of Geography, Russian Academy of Sciences, Moscow)
[AAS08-P27]A 3-kg payload IBBCEAS instrument for 4-D mapping of the NO3 Radical
*Shogo Saito1, Mixtli Campos-Pineda1, Albert Ruth1 (1.University College Cork)
[AAS08-P28]Long-term variation analysis of isoprene column amounts over Rikubetsu
*Tomoo Nagahama1, Isamu Morino2 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.National Institute for Environmental Studies)
[AAS08-P29]Sensitivities of soil resistances to the modelled tropospheric ozone: validation with the drone vertical profile at the western coast of Japan
*Syuichi Itahashi1, Mao Xu1 (1.Kyushu University, Research Institute for Applied Mechanics)
[AAS08-P30]Evaluation of black carbon and carbon monoxide over East Asia using E3SM model and long-term observations
*ANKAN SARKAR1, Yugo Kanaya1, Takuma Miyakawa1, Chunmao Zhu1, Hitoshi Irie2, Shaocheng Xie3, Qi Tang3, Peter Andrew Bogenschutz3, Seong Soo Yum4 (1.Japan Agency for Marine-Earth Science and Technology, 2.Chiba University, 3.Lawrence Livermore National Laboratory, 4.Korea Institute of Science and Technology)
[AAS08-P31]Relationship Between Soil Mercury Concentrations and Atmospheric Mercury Derived from Fossil Fuel Combustion at Syowa Station and Lützow-Holm Bay, Antarctica
*Koyomi Nakazawa1, Osamu Nagafuchi2, Koji Kanefuji3, Satoshi Imura4 (1.Toyama Prefectural University, 2.Fukuoka Institute of Technology, 3.The Institute of Statistical and Mathematics, 4.National Institute of Polar Research)
[AAS08-P32]Air mass factor calculation for deriving NO2 column amounts from GOSAT-GW/TANSO-3 observation
*Tomohiro Sato1, Tamaki Fujinawa2,1, Hyunkwang Lim2, Takafumi Sugita2, Hiroshi Tanimoto2, YASUKO KASAI3,1 (1.National Institute of Information and Communications Technology, 2.National Institute for Environmental Studies, 3.Institute of Science Tokyo)
[AAS08-P33]Atmospheric ethane measurements over Asian cities using commercial aircraft: implications for methane emissions
*Taku Umezawa1,2, Takuya Saito1, Toshinobu Machida1,3, Yosuke Niwa1, Motoki Sasakawa1, Hidekazu Matsueda4, Yousuke Sawa5, Kazuhiro Tsuboi5,6, Kentaro Ishijima5,6, Ryo Fujita5 (1.National Institute for Environmental Studies, 2.Tohoku University, 3.Hiroshima University, 4.Dokkyo University, 5.Meteorological Research Institute, 6.Japan Meteorological Agency)
[AAS08-P34]Evaluation of wet removal efficiency of black carbon over the Yellow Sea from aircraft measurements
*Hyeongmo Kang1, Sunran Lee2, Hee-Jung Yoo2, Sumin Kim2, Saehee Lim3, Yongjoo Choi1 (1.Hankuk University of Foreign Studies, 2.Global Atmospheric Watch and Research Division, National Institute of Meteorological Sciences, 3.Chungnam National University)
[AAS08-P35]Satellite-to-Surface Mapping of Ammonia over South Korea by Merging CrIS and IASI Satellites with In-Situ Validation
*Chisung Yun1, Minho Kim1, MinSuk Bae2, Jung Min Park3, Yongjoo Choi1 (1.Hankuk University of Foreign Studies, Republic of Korea, 2.Mokpo National University, Republic of Korea, 3.National Institute of Environmental Research, Incheon, Republic of Korea)
[AAS08-P36]Long-term Greenhouse Gas Observations by GOSAT Series Satellites and NIES Products
*Tazu Saeki1, Tsuneo Matsunaga1, Isamu Morino1, Yukio Yoshida1, Makoto Saito1, Hibiki M Noda1, Hirofumi Ohyama1, Yu Someya1, Yosuke Niwa1, Hisashi Yashiro1, Hiroshi Tanimoto1, Takafumi Sugita1, Tamaki Fujinawa1, Akihide Kamei1, Fumie Kawazoe1, Yukinori Yokoshima1, Yoshihiro Itahashi1 (1.National Institute for Environmental Studies)
[AAS08-P37]Improving nitrate aerosol dynamics in remote regions in the GEOS-Chem model
*Mitsuki Nakajima1, Sakiko Ishino1, Yoshinori Iizuka2, Sumito Matoba2, Ryu Uemura3, Shohei Hattori4 (1.School of Geosciences and Civil Engineering, Kanazawa University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Graduate School of Environmental Studies, Nagoya University, 4.International Center for Isotope Effects Research, Nanjing University, China)
[AAS08-P38]Estimation of Anthropogenic CO2 Emissions in the Kanto Metropolitan Region Using LETKF with Wind-Dependent Localization
*Yutaka Arai1, Ryoichi Imasu2, Qiao Wang2, Hiroaki Kondo3 (1.Graduate School of Frontier Sciences, The University of Tokyo, Department of Natural Environmental Studies, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.National Institute of Advanced Industrial Science and Technology)
[AAS08-P39]Intercomparison of Single Scattering Albedo from In-situ and Column measurements in Anmyeon, South Korea
*Minho Kim1, Sumin Kim2, Se-Hwan yang2, Yongjoo Choi1 (1.Hankuk University of Foreign Studies, 2.Global Atmospheric Watch and Research Division, National Institute of Meteorological Sciences)
[AAS08-P40]Seasonal Variation in Mass Absorption Efficiency of Black Carbon in Korea
*Sujung Lee1, Giyeol Lee1, Jungmin Park2, Kwangyul Lee2, Pilho Kim2, Yongjoo Choi1 (1.Department of Environmental Sciences, Hankuk University of Foreign Studies, 2.Air Quality Environment Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research, Incheon, Republic of Korea)
[AAS08-P41]Urban Microscale Air Quality Monitoring Using Low-Cost Sensors and Artificial Intelligence Applied to Atmospheric Time Series
*JOSE MIGUEL NOYOLA1, Silhi Sherlin Cervantes Muciño1, Jose Antonio Moreno Razo1 (1.UNIVERSIDAD AUTONOMA METROPOLITANA)
[AAS08-P42]Co-occurring climate and air pollution extremes in China: mechanistic understanding and mitigation
*Meng Gao1 (1.Hong Kong Baptist University)
[AAS08-P43]Projected changes in natural aerosols and their effects on radiation and clouds
*Wakamatsu Aya1, Kawai Kei1, Kurosaki Yutaka2, Matsui Hitoshi1 (1.Graduate School of Environment Nagoya University, 2.Institute of Low Temperature Science Hokkaido University)
[AAS08-P44]The Recent Increase in Spring Vegetation in Korea, Increased Risk of Drought, and Potential Impact on Air Quality
*sanghyuk park1, minseok kim1, woobin kim1, jeehoon jeong1 (1.Sejong Univ.)
[AAS08-P45]SO2 advection height from Forest Fires Using Satellite Imagery
*Nanami Ohshima1, Hiroyasu Tokuue2,8, Sasara Jouko8, Kinuka Matsuzaki8, Asahi Hashimoto3,8, Mako Shibata4,8, Hiroshi Kawamata5,8, Nobuyasu Naruse6, Yukihiro Takahashi7,8 (1.Sapporo Kaisei Secondary School, 2.Institute for Space-Earth Environmental Research, Nagoya University, 3.Forestry Research Institute, Hokkaido Research Organization, 4.The University of Edinburgh, 5.Institute of the Advancement of Graduate Education, Hokkaido University, 6.School of Medicine, Shiga University of Medical Science, 7.Department of Cosmosciences, Graduate School of Science, Hokkaido University, 8.Non-profit Organisation Super Scientist Programme Plus)
[AAS08-P46]Estimation of fog formation and aerosol concentrations by analyzing camera images taken from Mt. Unzen
*Nanami Sumiyoshi1, Masafumi Ohashi1, Tomoki Nakayama2 (1.Graduate School of Science and Engineering, Kagoshima University, 2.Faculty of Environmental Science, Nagasaki University)
[AAS08-P47]Factors controlling the variability in Δ17O values of hydrogen peroxide in precipitatio
*Rintaro Hamamoto1, Sakiko Ishino1, Harumichi Shitamori1, Yoshinori Iizuka2, Sumito Matoba2, Hao Guo3, Mang Lin3, Koichi Watanabe4, Joel Savarino5, Shohei Hattori6 (1.Kanazawa University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Guangzhou Institute of Geochemistry, CAS, 4.Toyama Prefectural University, 5.Univ. Grenoble Alpes, CNRS, IRD, G-INP, IGE, 6.International Center for Isotope Effects Research, Nanjing University)
[AAS08-P48]Application of FTIR imaging for quantitative visualization of sulfate and nitrate in PM2.5 collected in Asian cities
*Osamu Nagafuchi1, Koyomi Nakazawa, Kennichi Shinozuka (1.Fukuoka Institute of Techology)
[AAS08-P49]Mechanisms of Secondary Organic Aerosol Formation Driven by Enhanced Emissions of Biogenic VOCs during a Typhoon
*Nikita Komuta1,2,3, Mizuo Kajino2,1, Yoshiteru Iinuma4, Takemitsu Arakaki3 (1.University of Tsukuba, 2.Meteorological Research Institute, 3.University of the Ryukyus, 4.Okinawa Institute of Science and Technology)
[AAS08-P50]Ozonolysis Mechanism of BVOC at the Air/Water Interface
*Kei Kurokawa1, Shinichi Enami1, Naoki Numadate1 (1.University of Tsukuba)
[AAS08-P51]Light-absorbing properties of secondary organic aerosol generated during the photooxidation of m-xylene in the presence and absence of NOx under different aging conditions
*Farha Asuvarkutty1, Yuji Fujitani2, Kei Sato2, Tomoki Nakayama1 (1.Graduate School of Integrated Science and Technology, Nagasaki University, 2.National Institute for Environmental Studies)
[AAS08-P52]Fenton oxidation of uric acid in the aqueous phase: Relevance to the oxidation process of the lung epithelial lining fluid
*Satomi Kinugasa1, Naoki Numadate1, Shinichi Enami1 (1.University of Tsukuba)
[AAS08-P53]Photo-induced OH Radical Formation in the Aqueous Phase of Limonene-Derived SOA
*Kota Mizuno1, Yuri Tabayashi1, Manato Sawabe1, Shuto Misasa1, Kouichi Matsumoto1, Nanase Kohno1 (1.Kindai University)
[AAS08-P54]Surface propensities of atmospherically relevant organic and inorganic ions investigated by spray ionization mass spectrometry
*Kento Kosugi1, Naoki Numadate1, Shinichi Enami1 (1.University of Tsukuba)
[AAS08-P55]Analysis of HO2 uptake coefficients onto liquid-liquid phase separated (LLPS) aerosols based on a resistor model
*Yosuke Sakamoto1, Yu Morino1, Kei Sato1 (1.National Institute for Environmental Studies)
[AAS08-P56]Characterization of organic aerosols at urban sites in Japan: Results from offline aerosol mass spectrometry, FTIR spectroscopy, molecular-level analyses, and model simulation
*Michihiro Mochida1,2, Baboer Yisikandeer2, Daichi Asakawa3, Fumikazu Ikemori4,5, Yu Morino6, Michiko Nishizawa1, Shunya Koizumi1, Virginia Tadei7, Bhagawati Kunwar1, Sho Ohata1, Ruichen Zhou1, Qianzhe Sun2, Satoshi Takahama7, Ann M. Dillner8 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Graduate School of Environmental Studies, Nagoya University, 3.Osaka City Research Center of Environmental Science, 4.Graduate School of Integrated Science and Technology, Nagasaki University, 5.Nagoya City Institute for Environmental Sciences, 6.National Institute for Environmental Studies, 7.ENAC/IIE, Ecole polytechnique fédérale de Lausanne (EPFL), 8.Air Quality Research Center, University of California, Davis)
[AAS08-P57]Chamber study on the influence of aerosol particles on ozone production sensitivity
*Kei Sato1, Yu Morino1, Yosuke Sakamoto1,2, Jiaru Li1,2,3, Yasuhiro Sadanaga4, Yoshizumi Kajii2,1,5, Takashi Imamura1,6 (1.National Institute for Environmental Studies, 2.Kyoto University, 3.Japan Agency for Marine-Earth Science and Technology, 4.Osaka Metropolitan University, 5.Qingdao University, 6.Tokyo Metropolitan Institute of Environmental Sciences)