関谷 高志

• 39) Quaglia, I., Visioni, D., Bednarz, E. M., Zhu, Y., Stenchikov, G., Aquila, V., Liu, C.-C., Mann, G. W., Peng, Y., Sekiya, T., Tilmes, S., Wang, X., Watanabe, S., Yu, P., Zhang, J., Yu, W., and Zhuo, Z.: Multi-model analysis of the impact of water vapor on the radiative forcing of volcanic aerosols after the 2022 Hunga Eruption, Atmos. Chem. Phys., 26, 7677–7704, https://doi.org/10.5194/acp-26-7677-2026, 2026.
• 38) Lee, W. R., Visioni, D., Wagman, B. M., Wentland, C. R., Kravitz, B., Watanabe, S., Sekiya, T., Jones, A., Haywood, J., Henry, M., and Bednarz, E. M.: G6-1.5K-SAI and G6sulfur: changes in impacts and uncertainty depending on stratospheric aerosol injection strategy in the Geoengineering Model Intercomparison Project, Atmos. Chem. Phys., 26, 7463–7483, https://doi.org/10.5194/acp-26-7463-2026, 2026.
• 37) Guan, X., Sato, T. O., Sekiya, T., Kuroda, T., Yang, H., and Kasai, Y.: Quantitative analysis of global air cleanliness using the Clean aIr Index (CII), Atmos. Environ., 374, 121930, https://doi.org/10.1016/j.atmosenv.2026.121930, 2026.
• 36) Jones, D. B. A., Prates, L., Qu, Z., Cheng, W. Y. Y., Miyazaki, K., Sekiya, T., Inness, A., Kumar, R., Tang, X., Worden, H., Koren, G., and Huijnen, V.: Assessment of regional and interannual variations in tropospheric ozone in chemical reanalyses, Atmos. Chem. Phys., 26, 6655–6682, https://doi.org/10.5194/acp-26-6655-2026, 2026.
• 35) Taketani, F., Matsumoto, K., Sekiya, T., Yamaji, K., and Kanaya, Y.: An observational case study for inorganic nitrogen dry deposition potential on sea-surface primary production in the subtropical, western North Pacific, Sci. Rep., 16, 9068, https://doi.org/10.1038/s41598-026-39401-x, 2026.
• 34) Takashima, H., Kanaya, Y., Iwamoto, Y., Takeda, K., Sekiya, T., Taketani, F., Friedrich, M. M., Van Roozendael, M., Ooki, A., Miyakawa, T., Ogino S.-Y., and Katsumata, M.: Simultaneous observations of atmospheric IO radical, O3, and sea surface iodide over the tropical western Pacific warm pool: strong correlation of IO levels with estimated inorganic iodine fluxes, Prog. Earth Planet. Sci., 12, 104, https://doi.org/10.1186/s40645-025-00775-7, 2025.
• 33) Ha, P. T. M., Kanaya, Y., Yamaji, K., Itahashi, S., Chatani, S., Sekiya, T., Hernández, M. D. A., Burrows, J. P., Schlager, H., Lichtenstern, M., Poehlker, M., and Holanda, B.: Assessing BC and CO emissions from China using EMeRGe aircraft observations and WRF/CMAQ modelling, Atmos. Chem. Phys., 25, 13429–13452, https://doi.org/10.5194/acp-25-13429-2025, 2025.
• 32) Zhuo, Z., Wang, X., Zhu, Y., Yu, W., Bednarz, E. M., Fleming, E., Colarco, P. R., Watanabe, S., Plummer, D., Stenchikov, G., Randel, W., Bourassa, A., Aquila, V., Sekiya, T., Schoeberl, M. R., Tilmes, S., Zhang, J., Kushner, P. J., and Pausata, F. S. R.: Comparing multi-model ensemble simulations with observations and decadal projections of upper atmospheric variations following the Hunga eruption, Atmos. Chem. Phys., 25, 13161–13176, https://doi.org/10.5194/acp-25-13161-2025, 2025.
• 31) Zhu, Y., Akiyoshi, H., Aquila, V., Asher, E., Bednarz, E. M., Bekki, S., Brühl, C., Butler, A. H., Case, P., Chabrillat, S., Chiodo, G., Clyne, M., Colarco, P. R., Dhomse, S., Falletti, L., Fleming, E., Johnson, B., Jörimann, A., Kovilakam, M., Koren, G., Kuchar, A., Lebas, N., Liang, Q., Liu, C.-C., Mann, G., Manyin, M., Marchand, M., Morgenstern, O., Newman, P., Oman, L. D., Østerstrøm, F. F., Peng, Y., Plummer, D., Quaglia, I., Randel, W., Rémy, S., Sekiya, T., Steenrod, S., Sukhodolov, T., Tilmes, S., Tsigaridis, K., Ueyama, R., Visioni, D., Wang, X., Watanabe, S., Yamashita, Y., Yu, P., Yu, W., Zhang, J., and Zhuo, Z.: Hunga Tonga–Hunga Ha′apai Volcano Impact Model Observation Comparison (HTHH-MOC) project: experiment protocol and model descriptions, Geosci. Model Dev., 18, 5487–5512, https://doi.org/10.5194/gmd-18-5487-2025, 2025.
• 30) Sekiya, T., Takashima, H., Kanaya, Y., Taketani, F., Sudo, K., Friedrich, M. M., and Van Roozendael, M.: Evaluation of processes driving iodine monoxide and ozone variability over the Western Pacific warm pool, Prog. Earth Planet. Sci., 12, 44, https://doi.org/10.1186/s40645-025-00712-8, 2025
• 29) Sekiya, T., Emili, E., Miyazaki, K., Inness, A., Qu, Z., Pierce, R. B., Jones, D., Worden, H., Cheng, W. Y. Y., Huijnen, V., and Koren, G.: Assessing the relative impacts of satellite ozone and its precursor observations to improve global tropospheric ozone analysis using multiple chemical reanalysis systems, Atmos. Chem. Phys., 25, 2243–2268, https://doi.org/10.5194/acp-25-2243-2025, 2025.
• 28) Rijsdijk, P., Eskes, H., Dingemans, A., Boersma, K. F., Sekiya, T., Miyazaki, K., and Houweling, S.: Quantifying uncertainties in satellite NO2 superobservations for data assimilation and model evaluation, Geosci. Model Dev., 18, 483–509, https://doi.org/10.5194/gmd-18-483-2025, 2025.
• 27) Tanimoto, H., Matsunaga, T., Someya, Y., Fujinawa, T., Ohyama, H., Morino, I., Yashiro, H., Sugita, T., Inomata, S., Müller, A., Saeki, T., Yoshida, Y., Niwa, Y., Saito, M., Noda, H., Yamashita, Y., Ikeda, K., Saigusa, N., Machida, T., Frey, M. M., Lim, H., Srivastava, P., Jin, Y., Shimizu, A., Nishizawa, T., Kanaya, Y., Sekiya, T., Patra, P., Takigawa, M., Bisht. J., Kasai, Y., and Sato, T. O., The greenhouse gas observation mission with Global Observing SATellite for Greenhouse gases and Water cycle (GOSAT-GW): objectives, conceptual framework and scientific contributions. Prog Earth Planet Sci 12, 8, https://doi.org/10.1186/s40645-025-00684-9, 2025.
• 26) 山口 将大, 金谷 有剛, 滝川 雅之, Jagat S. H. Bisht, 関谷 高志, Prabir K. Patra, 杉田 考史, 谷本 浩志, 擬似衛星観測データを用いた発散法によるCO2およびNOXの地表排出フラックス推計, 日本リモートセンシング学会誌, 44 (2), 156-165, https://doi.org/10.11440/rssj.2024.007, 2024（査読無）.
• 25) 藤縄 環, 林 顯光, 佐藤 知紘, 関谷 高志, 山下 陽介, 中村 綾乃, 杉田 考史, 金谷 有剛, 笠井 康子, 谷本 浩志, GOSAT-GW TANSO-3 L2 NO2プロダクト（T3L2NO2）の導出アルゴリズム, 日本リモートセンシング学会誌, 44 (2), 127-134, https://doi.org/10.11440/rssj.2024.014,　2024 (査読無).
• 24) Brodowsky, C. V., Sukhodolov, T., Chiodo, G., Aquila, V., Bekki, S., Dhomse, S. S., Höpfner, M., Laakso, A., Mann, G. W., Niemeier, U., Pitari, G., Quaglia, I., Rozanov, E., Schmidt, A., Sekiya, T., Tilmes, S., Timmreck, C., Vattioni, S., Visioni, D., Yu, P., Zhu, Y., and Peter, T.: Analysis of the global atmospheric background sulfur budget in a multi-model framework, Atmos. Chem. Phys., 24, 5513–5548, https://doi.org/10.5194/acp-24-5513-2024, 2024.
• 23) Sekiya, T., Miyazaki, K., Eskes, H., Bowman, K., Sudo, K., Kanaya, Y., and Takigawa, M., The worldwide COVID-19 lockdown impacts on global secondary inorganic aerosols and radiative budget, Sci. Adv., 9, eadh2688, doi:10.1126/sciadv.adh2688, 2023
• 22) Bisht, J. S. H., Patra, P. K., Takigawa, M., Sekiya, T., Kanaya, Y., Saitoh, N., and Miyazaki, K.: Estimation of CH4 emission based on an advanced 4D-LETKF assimilation system, Geosci. Model Dev., 16, 1823–1838, https://doi.org/10.5194/gmd-16-1823-2023, 2023.
• 21) Takashima, H., Kanaya, Y., Kato, S., Friedrich, M. M., Van Roozendael, M., Taketani, F., Miyakawa, T., Komazaki, Y., Cuevas, C. A., Saiz-Lopez, A., and Sekiya, T., Full latitudinal marine atmospheric measurements of iodine monoxide, Atmos. Chem. Phys., 22, 4005–4018, https://doi.org/10.5194/acp-22-4005-2022, 2022.
• 20) Sekiya, T., Miyazaki, K., Eskes, H., Sudo, K., Takigawa, M., and Kanaya, Y., A comparison of the impact of TROPOMI and OMI tropospheric NO2 on global chemical data assimilation, Atmos. Meas. Tech., 15, 1703–1728, https://doi.org/10.5194/amt-15-1703-2022, 2022.
• 19) Miyazaki, K., Bowman, K., Sekiya, T., Takigawa, M., Neu, J. L., Sudo, K., Osterman, G., and Eskes, H., Global tropospheric ozone responses to reduced NOx emissions linked to the COVID-19 worldwide lockdowns, Sci. Adv., 7, 24, abf7460, https://doi.org/10.1126/sciadv.abf7460, 2021.
• 18) Sekiya, T., Miyazaki, K., Ogochi, K., Sudo, K., Takigawa, M., Eskes, H., and Boersma, K. F., Impacts of horizontal resolution on global data assimilation of satellite measurements for tropospheric chemistry analysis, J. Adv. Model. Earth Syst., 13, e2020MS002180. https://doi.org/10.1029/2020MS002180, 2021
• 17) Zhang, Y., West, J. J., Emmons, L. K., Flemming, J., Jonson, J. E., Lund, M. T., Sekiya, T., Sudo, K., Gaudel, A., Chang, K.-L., Nédélec, P., Thouret, V., Contributions of World Regions to the Global Tropospheric Ozone Burden Change from 1980 to 2010, Geophys. Res. Lett., 48, e2020GL089184. https://doi.org/10.1029/2020GL089184, 2021
• 16) Miyazaki, K., Bowman, K., Sekiya, T., Jiang, Z., Chen, X., Eskes, H., Ru, M., Zhang, Y., Shindell, D., Air quality response in China linked to the 2019 novel coronavirus (COVID-19) lockdown, Geophys. Res. Lett., 47, e2020GL089252. https://doi.org/10.1029/2020GL089252, 2020
• 15) Miyazaki, K., Bowman, K., Sekiya, T., Eskes, H., Boersma, F., Worden, H., Livesey, N., Payne, V. H., Sudo, K., Kanaya, Y., Takigawa, M., and Ogochi, K.: Updated tropospheric chemistry reanalysis and emission estimates, TCR-2, for 2005–2018, Earth Syst. Sci. Data, 12, 2223–2259, https://doi.org/10.5194/essd-12-2223-2020, 2020.
• 14) Huijnen, V., Miyazaki, K., Flemming, J., Inness, A., Sekiya, T., and Schultz, M. G., An intercomparison of tropospheric ozone reanalysis products from CAMS, CAMS interim, TCR-1, and TCR-2, Geosci. Model Dev., 13, 1513–1544, https://doi.org/10.5194/gmd-13-1513-2020, 2020.
• 13) Sekiya, T., Kanaya, Y., Sudo, K., Taketani, F., Iwamoto, Y., Aita, M. N., Yamamoto, A., Kawamoto, K., Global bromine- and iodine-mediated tropospheric ozone loss estimated using the CHASER chemical transport model, SOLA, 2020-037, https://doi.org/10.2151/sola.2020-037, 2020
• 12) Kanaya, Y., Miyazaki, K., Taketani, F., Miyakawa, T., Takashima, H., Komazaki, Y., Pan, X., Kato, S., Sudo, K., Sekiya, T., Inoue, J., Sato, K., and Oshima, K., Ozone and carbon monoxide observations over open oceans on R/V Mirai from 67° S to 75° N during 2012 to 2017: testing global chemical reanalysis in terms of Arctic processes, low ozone levels at low latitudes, and pollution transport, Atmos. Chem. Phys., 19, 7233–7254, https://doi.org/10.5194/acp-19-7233-2019, 2019.
• 11) Miyazaki, K., Sekiya, T., Fu, D., Bowman, K. W., Kulawik, S. S., Sudo, K., Walker, T., Kanaya, Y., Takigawa, M., Ogochi, K., Eskes, H., Boersma, K. F., Thompson, A. M., Gaubert, B., Barre, J., Emmons, L. K., Balance of emission and dynamical controls on ozone during the Korea-United States Air Quality campaign from multiconstituent satellite data assimilation. J. Geophys. Res., 124, 387– 413. https://doi.org/10.1029/2018JD028912, 2019
• 10) Dong, X., Fu, J. S., Zhu, Q., Sun, J., Tan, J., Keating, T., Sekiya, T., Sudo, K., Emmons, L., Tilmes, S., Jonson, J. E., Schulz, M., Bian, H., Chin, M., Davila, Y., Henze, D., Takemura, T., Benedictow, A. M. K., and Huang, K., Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study, Atmos. Chem. Phys., 18, 15581–15600, https://doi.org/10.5194/acp-18-15581-2018, 2018.
• 9) Liang, C.-K., West, J. J., Silva, R. A., Bian, H., Chin, M., Davila, Y., Dentener, F. J., Emmons, L., Flemming, J., Folberth, G., Henze, D., Im, U., Jonson, J. E., Keating, T. J., Kucsera, T., Lenzen, A., Lin, M., Lund, M. T., Pan, X., Park, R. J., Pierce, R. B., Sekiya, T., Sudo, K., and Takemura, T., HTAP2 multi-model estimates of premature human mortality due to intercontinental transport of air pollution and emission sectors, Atmos. Chem. Phys., 18, 10497–10520, https://doi.org/10.5194/acp-18-10497-2018, 2018.
• 8) Taketani, F., Aita, M.N., Yamaji, K., Sekiya, T., Ikeda, K., Sasaoka, K., Hashioka, T., Honda, M.C., Matsumoto., K., and Kanaya, Y., Seasonal Response of North Western Pacific Marine Ecosystems to Deposition of Atmospheric Inorganic Nitrogen Compounds from East Asia. Sci Rep 8, 9324, https://doi.org/10.1038/s41598-018-27523-w, 2018
• 7) Galmarini, S., Kioutsioukis, I., Solazzo, E., Alyuz, U., Balzarini, A., Bellasio, R., Benedictow, A. M. K., Bianconi, R., Bieser, J., Brandt, J., Christensen, J. H., Colette, A., Curci, G., Davila, Y., Dong, X., Flemming, J., Francis, X., Fraser, A., Fu, J., Henze, D. K., Hogrefe, C., Im, U., Garcia Vivanco, M., Jiménez-Guerrero, P., Jonson, J. E., Kitwiroon, N., Manders, A., Mathur, R., Palacios-Peña, L., Pirovano, G., Pozzoli, L., Prank, M., Schultz, M., Sokhi, R. S., Sudo, K., Tuccella, P., Takemura, T., Sekiya, T., and Unal, A., Two-scale multi-model ensemble: is a hybrid ensemble of opportunity telling us more?, Atmos. Chem. Phys., 18, 8727–8744, https://doi.org/10.5194/acp-18-8727-2018, 2018.
• 6) Sekiya, T., Miyazaki, K., Ogochi, K., Sudo, K., and Takigawa, M., Global high-resolution simulations of tropospheric nitrogen dioxide using CHASER V4.0, Geosci. Model Dev., 11, 959–988, https://doi.org/10.5194/gmd-11-959-2018, 2018.
• 5) Patra, P.K., Crisp, D., Kaiser, J.W., Debra Wunch, Saeki, T., Ichii, K., Sekiya, T., Wennberg, P.O., Feist, D.G., Pollard, D.F., Griffith, D.W.T., Velazco, V.A., De Maziere, M., Sha, M.K., Roehl, C., Chatterjee, A., Ishijima, K., The Orbiting Carbon Observatory (OCO-2) tracks 2–3 peta-gram increase in carbon release to the atmosphere during the 2014–2016 El Niño, Sci Rep 7, 13567, https://doi.org/10.1038/s41598-017-13459-0, 2017.
• 4) Kashimura, H., Abe, M., Watanabe, S., Sekiya, T., Ji, D., Moore, J. C., Cole, J. N. S., and Kravitz, B., Shortwave radiative forcing, rapid adjustment, and feedback to the surface by sulfate geoengineering: analysis of the Geoengineering Model Intercomparison Project G4 scenario, Atmos. Chem. Phys., 17, 3339–3356, https://doi.org/10.5194/acp-17-3339-2017, 2017.
• 3) Sekiya, T., Sudo, K., and Nagai, T., Evolution of stratospheric sulfate aerosol from the 1991 Pinatubo eruption: Roles of aerosol microphysical processes, J. Geophys. Res. Atmos., 121, 2911– 2938, doi:10.1002/2015JD024313, 2016.
• 2) Sekiya, T., and Sudo, K., Roles of transport and chemistry processes in global ozone change on interannual and multidecadal time scales”, J. Geophys. Res. Atmos., 119, 4903– 4921, doi:10.1002/2013JD020838, 2014.
• 1) Sekiya, T., and Sudo, K., Role of meteorological variability in global tropospheric ozone during 1970–2008, J. Geophys. Res., 117, D18303, doi:10.1029/2012JD018054, 2012.

受賞

• 令和5年11月　日本大気化学会奨励賞

内部表彰

• 令和6年4月　海洋研究開発機構　業績表彰（研究開発功績賞）
• 令和7年10月 海洋研究開発機構　地球シミュレータ課題表彰

代表

• 令和7-9年度
  文部科学省　科学研究費補助金　基盤研究(C)
  「多成分衛星観測とマルチモデル解析から探る全球エアロゾル変動と気候変動への影響」
• 令和4-6年度
  文部科学省　科学研究費補助金　基盤研究(C)
  「多成分衛星観測の統合に基づく硫酸・硝酸・アンモニウム塩エアロゾル経年変動の解明」

分担

• 令和7-9年度
  環境省環境総合研究推進費 2-2501
  「主要SLCF排出インベントリの精緻化及びトップダウン推計比較による高精度化（代表：谷本浩志）」
• 令和6-8年度
  文部科学省　科学研究費補助金　基盤研究(B)
  「大気物質の沈着がもたらす海洋生態系へのインパクト：観測-実験-モデルによる統合評価（代表：竹谷文一）」
• 令和6-10年度
  環境省環境総合研究推進費 S-22 テーマ２
  「予測モデルおよび逆推定モデルを用いた全球規模での主要 3 種 GHGに関する排出・吸収量の研究（テーマ代表：羽島知洋）」
• 令和5-9年度
  文部科学省　科学研究費補助金　学術変革領域研究(A)
  「BVOCを介した植物・気候相互作用のモデリングと予測（代表：須藤健悟）」
• 令和4-6年度
  環境省環境総合研究推進費 2-2201
  「燃焼起源SLCFの東アジア国別排出量の迅速把握と方法論構築（代表：谷本浩志）」
• 令和3-5年度
  文部科学省　科学研究費補助金　基盤研究(A)
  「対流圏オゾンホールと海洋大気ヨウ素化学：西太平洋低緯度域の重点解析と知見統合（代表：金谷有剛）」
• 令和2-4年度
  文部科学省　科学研究費補助金　基盤研究(B)
  「西部北太平洋域における海洋一次生産に対する人為起源エアロゾルの影響評価（代表：相田真希）」
• 平成30年度
  文部科学省　科学研究費補助金　国際共同研究加速基金（国際共同研究強化（B)
  「TROPOMI衛星観測を用いた複数化学物質データ同化によるメタン消失過程の精緻化（代表：宮崎和幸）」
• 平成30-32年度
  文部科学省　科学研究費補助金　基盤研究(B)
  「北東インド洋海域における大気窒素化合物沈着の海洋表層生態系への寄与解明(代表：竹谷文一)」
• 平成30年度
  文部科学省　科学研究費補助金　基盤研究(B)
  「衛星データ同化による第２世代大気組成再解析の構築（代表：宮崎和幸）」