Atmospheric and Hydrospheric Sciences (A)
Session Sub-category Atmospheric Sciences, Meteorology & Atmospheric Environment(AS)
Session ID A-AS11
Title Atmospheric Chemistry
Short Title Atmospheric Chemistry
Main Convener Name Shinichi Enami
Affiliation University of Tsukuba
Co-Convener 1 Name Hitoshi Irie
Affiliation Center for Environmental Remote Sensing, Chiba University
Co-Convener 2 Name Shigeyuki Ishidoya
Affiliation Advanced Industrial Science and Technology
Co-Convener 3 Name Tomoki Nakayama
Affiliation Graduate School of Fisheries and Environmental Sciences, Nagasaki University
Session Language 
J
Scope 
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. We strongly encourage authors to prepare presentation slides and a poster in English. Oral presentation in English is also welcome.
Presentation Format Oral and Poster presentation
Invited Authors Tomoaki Nishizawa (National Institute for Environmental Studies)
Time Presentation No Title Presenter
Oral Presentation May 25 PM2
15:30 - 15:45 AAS11-01 Declining Black Carbon Contribution from China to the Arctic Yange Deng
15:45 - 16:00 AAS11-02 Characterization of Pandora direct-sun and sky-scan modes and evaluation of their use in validating satellite NO2 and HCHO retrievals Nguyen Doan Thien Chi
16:00 - 16:15 AAS11-03 Validation of NO2 vertical profile from remote sensing and estimation of emission rates using airborne measurements Yongjoo Choi
16:15 - 16:30 AAS11-04 Hindcasting simulation of global methane concentration with
a Chemistry Climate Model 		Tatsuya Nagashima
16:30 - 16:45 AAS11-05 Declining Methane Leakage from Oil & Gas: Uncovered by Atmospheric Observation in Western Siberia Takuto Taguchi
16:45 - 17:00 AAS11-06 On the possibility of continuation of long-term environmental monitoring data series of POPs in case of change of analytical methods Ekaterina Zhigacheva
Oral Presentation May 26 AM1
9:00 - 9:15 AAS11-07 Tropospheric ozone increase in Northern Vietnam and evaluation of rice yield loss Kazuyuki Kita
9:15 - 9:30 AAS11-08 Intensive drone measurement campaign at Fukue Island in May 2024 and the examination of the role of meteorological modeling on the vertical profile of photochemical oxidants Syuichi Itahashi
9:30 - 9:45 AAS11-09 Annual and Inter-annual variations of Surface Ozone in Sapporo Kwok Jommy
9:45 - 10:00 AAS11-10 Diurnal, seasonal, and interannual variations in δ18O of atmospheric O2 and its application to evaluate natural/anthropogenic changes in oxygen, carbon, and water cycles Shigeyuki Ishidoya
10:00 - 10:15 AAS11-11 Observational ozone data over the global oceans and polar regions: The TOAR-II Oceans dataset version 2024 with contribution from Japan Yugo Kanaya
10:15 - 10:30 AAS11-12 Evaluation of processes driving iodine monoxide and ozone variability over the Western Pacific Warm Pool Takashi Sekiya
Oral Presentation May 26 AM2
10:45 - 11:15 AAS11-13 Observation of atmospheric aerosols using lidar Tomoaki Nishizawa
11:15 - 11:30 AAS11-14 Evaluation of the Polarized Complex Amplitude Aerosol Sensor using Two-Sphere Clusters Shotaro Suda
11:30 - 11:45 AAS11-15 Spatiotemporal Analysis of SO2 Distribution from Forest Fires Using Satellite Imagery Nanami Ohshima
11:45 - 12:00 AAS11-16 Quantitative Analysis of Global Air Cleanliness Using the Clean aIr Index (CII) Xuetao Guan
12:00 - 12:15 AAS11-17 Characterization of urban secondary organic aerosol and its source apportionment by the offline use of an aerosol mass spectrometer Baboer Yisikandeer
Oral Presentation May 26 PM1
13:45 - 14:00 AAS11-18 In-situ observation of the deliquescence process of ammonium sulfate nanoparticles under atmospheric pressure using a transmission electron microscope Yuki Kimura
14:00 - 14:15 AAS11-19 Surface tension measurements of surfactant-containing droplets as a function of particle size Masayoshi Nakamura
14:15 - 14:30 AAS11-20 A Simple Surface-bulk Partitioning Model for Estimating Size-dependent Surface Tension of Deliquesced Aerosol Particles Rikuto Minamikawa
14:30 - 14:45 AAS11-21 Competitive multiphase reactions of deliquesced aerosol particles in the presence of SO2 and NO2 regulated by aerosol pH Nanami Emori
14:45 - 15:00 AAS11-22 Heterogeneous kinetics of the ozonolysis of oleic acid with SO2 Zhihao Cheng
15:00 - 15:15 AAS11-23 Inherent ultraviolet absorption of unsaturated fatty acid: oleic acid as a case study Raiki Nishizawa
Oral Presentation May 26 PM2
15:30 - 15:45 AAS11-24 Influence of dust, marine organic aerosols, and bioaerosols on ice nucleation in Arctic low-level clouds under Arctic warming Zhaoyi Ren
15:45 - 16:00 AAS11-25 Variation in the number concentration of ice nucleating particles at Mt. Tsukuba, Japan Tamaki Suzuki
16:00 - 16:15 AAS11-26 The effect of increased dust by warming on ice nucleation in Arctic lower tropospheric clouds Hitoshi MATSUI
16:15 - 16:30 AAS11-27 Source-Specific Light Absorptivity of Organic Aerosols: Insights From a Year-long Offline Study in Hyytiälä, Finland Sun Qianzhe
16:30 - 16:45 AAS11-28 Quantification of PM2.5 concentration reduction during rainfall due to below-cloud scavenging based on observations and simulations. Risako Fujino
16:45 - 17:00 AAS11-29 Individual particle analysis of aerosols from biomass burning over Asia and their mixing with sea salt Kouji Adachi
Presentation No Title Presenter
Poster Presentation May 26 PM3
AAS11-P01 Physical structure determined for mixed aerosol by aerosol mass spectrometer and Raman microscope and its relationship with hydroperoxy radical uptake coefficient Kei Sato
AAS11-P02 Ozonolysis Mechanism of unsaturated organic compounds: Relevance to the multiphase oxidation processes of atmospheric aerosol and human skin lipid Tamura Yuya
AAS11-P03 Raman spectroscopic analysis of atmospheric plastic particles using near-infrared laser Shunya Kamizono
AAS11-P04 Consideration of Sulfate Aerosol Formation Processes via Sulfite Oxidation Enhanced by Clay Minerals Yusuke Kondo
AAS11-P05 Contribution of Sea Spray Aerosols to a Large Low Bias in Aerosol Number Concentrations over the summertime Southern Ocean Tatsuya Fukuta
AAS11-P06 Both emissions and ageing altered brown carbon aerosols in the East Asian outflow Chunmao Zhu
AAS11-P07 Uptake of black carbon aerosols in air masses from China and Siberia into low-level clouds over the western North Pacific in summer Yoshiha Kita
AAS11-P08 Analysis of Behavior for Primary and Secondary Organic Carbon in PM2.5 at Industrial/Urban Site in Korea Sujung Lee
AAS11-P09 Quantitative assessment of the light absorption properties of water-soluble organic carbon at industrial/urban site in Korea minseo lee
AAS11-P10 Annual Monitoring of Urban PM2.5 on a High-Rise Rooftop in Tokyo: Analysis of Vertical Profile near the Surface and Evaluation of a Numerical Model Tomoki Kajikawa
AAS11-P11 Validation of black carbon concentration data obtained by unmanned aerial vehicle (UAV) with ground-based measurements Okubo Takeya
AAS11-P12 Time variation of stratospheric aerosol layer observed by lidar at Fukuoka in 2022 and 2024
~ Observation of the volcanic aerosol from Tonga volcanic eruption 		Yuki Shimada
AAS11-P13 Antarctic Haze Phenomena at Syowa Station, Antarctica: Seasonal and Vertical Distributions and Impact on Atmospheric Chemistry Keiichiro Hara
AAS11-P14 Impact of vibrationally-excited- and stabilized-Criegee intermediates on the global-scale aerosol formation: Detailed kinetics and sensitivity analysis Hiroo Hata
AAS11-P15 Atmospheric trend of ethylene oxide in the Greater Tokyo Area Kenichi Tonokura
AAS11-P16 Impact of formaldehyde oxide from CH2I2 on atmospheric chemistry Hayate Wakabayashi
AAS11-P17 Investigation of the Relationship Between Ozone Production and HOx Production Rate in Tsukuba in the Summer of 2022 Based on HOx Measurements Yosuke Sakamoto
AAS11-P18 Decrease of the hydrogen isotope ratio of methane observed with FTIR at Tsukuba Isao Murata
AAS11-P19 Comparative analysis of ground-level methane concentrations in different regions of Japan Chihiro Koto
AAS11-P20 A method for continuous measurements of atmospheric CH4 and C2H6 using a commercial mid-infrared laser absorption spectrometer Hideki Nara
AAS11-P21 Characteristics of methane in South Asia inferred from enhancement ratios of GHG concentrations based on GOSAT-2 Taichi Yoshii
AAS11-P22 SCALE Simulation of Fine-Grid Spatio-Temporal CO2 Distribution Over the Kanto Region Tikemani Bag
AAS11-P23 Decadal variations in vertical profiles of atmospheric carbon dioxide estimated from a combination of tower, aircraft, and satellite measurements in West Siberia Qianning Qin
AAS11-P24 Examination of anthropogenic CO2 emission inventories using ground-based observations and high-resolution model simulations over the Tokyo Megacity Zhenglun Yang
AAS11-P25 Measurements of CO2 column mixing ratio around the Osaka Itami Airport Mitsuhiko Kono
AAS11-P26 Assessing the impact of CO2 emissions from China on Japan’s coastal regions by using excess concentration ratios from GOSAT and GOSAT-2 Yusuke Hayashi
AAS11-P27 Evaluation of a domestically produced low-cost carbon dioxide sensor toward ground-based measurements in urban atmosphere Takuma Miyakawa
AAS11-P28 Identification of Major Anthropogenic Emission Sources of CO2 and CH4 in Seoul, South Korea during the ASIA-AQ campaign hyeongseok Choi
AAS11-P29 Analysis of diurnal variation of isoprene and air pollutant column amounts observed with FTIR at Rikubetsu Tomoo Nagahama
AAS11-P30 Analysis and Comparison of Long-term Trends in Air Pollutants in Seoul and Beijing Woo-Sik Jung
AAS11-P31 AQI and Health Impact Analysis of Air Pollution in Seoul and Beijing Woo-Sik Jung