Nobuyuki UTSUMI, Ph.D.
Associate Professor
Department of Civil and Environmental Engineering,
School of Environment and Society, Tokyo Institute of Technology
Email: utsumi.n.aa@m.titech.ac.jp

RESEARCH FIELDS
-

-

-

-

Weather systems and hydrologic cycle
Contributions of weather systems to global and regional hydrologic cycle and water-related disasters
Algorithm development of objective weather system detections
Climate change
Climate change impact on future hydrologic extremes
Detection and attribution of anthropogenic impact on hydrologic extremesSatellite remote sensing of precipitation
Algorithm development of satellite-based precipitation retrievals
Validation of satellite-based precipitation products
Water resources management
Future projection of water resources supply and demand
Smart farming technology
Application of weather and climate big data for smart farming
Application of UAV remote sensing for smart farming

EDUCATION
Mar. 2015

Ph.D. in Civil Engineering, Graduate School of Engineering, The University of
Tokyo“Characteristics of global precipitation for different weather systems and theimpacts of climate change” – Supervised by Prof. Taikan OKI

Mar. 2008

M.S. in Civil Engineering, Graduate School of Engineering, The University ofTokyo“A correction and interpolation scheme for irregularly distributed precipitation
data over Japan” – Supervised by Prof. Shinjiro KANAE

Mar. 2006

B.S. in Agriculture, Dept. of Global Agricultural Sciences, Faculty ofAgriculture, The University of Tokyo

WORK EXPERIENCE
April 2023 – Present

Associate Professor, Department of Civil and Environmental Engineering,
School of Environment and Society, Tokyo Institute of Technology, Japan

July 2020 – March 2023

Assistant Professor, Nagamori Institute of Actuators, Kyoto University of
Advanced Science, Japan

July 2019 – June 2020

Postdoctoral Scholar, NASA Jet Propulsion Laboratory, California Institute ofTechnology, USA

July 2017 – June 2019

Visiting Postdoctoral Scholar, NASA Jet Propulsion Laboratory, California
Institute of Technology, USA (JSPS Overseas Research Fellow)

Nov. 2015 – Mar. 2017

Project Assistant Professor, Institute of Industrial Science,
The University of Tokyo

Aug. 2010 – Nov. 2015

Project Researcher, Institute of Industrial Science, The University of Tokyo

Apr. 2008 – June. 2009

Assistant Researcher, Mitsubishi UFJ Research and Consulting Co., Ltd.

AWARDS AND HONORS
Jul. 2017 - Jul. 2019

JSPS Overseas Research Fellowship, by Japan Society for the Promotion of
Science (JSPS)

5th September 2014:

Excellent Presentation Award, for the presentation at 21st Symposium on Global
Environment, Committee on Global Environment. JSCE

Apr. 2006- Mar. 2008:

Kajima Ikueikai Scholarship

GRANTS
Apr. 2022 – Mar. 2025

JAXA 3rd Research Announcement on the Earth Observations, “Improvement of
the GSMaP Passive Microwave Algorithm for Snowfall Retrieval”, 11,221,000
JPY (approx. 98,000 USD)

Apr. 2021 – Mar. 2025

Grants-in-Aid for Scientific Research, Kiban-B, by Japan Society for the
Promotion of Science (JSPS), Nobuyuki UTSUMI, “Investigating the driving
mechanisms of the future changes in floods in the East Asia considering weather
systems”, 13,000,00 JPY (approx. 114,000 USD)

Apr. 2021 – Mar. 2022

JAXA 2nd Research Announcement on the Earth Observations, Nobuyuki
UTSUMI, “Evaluation of GPM/GSMaP products towards the improvement ofsatellite-based snowfall retrieval algorithms”, 1,750,000 JPY (approx. 15,000
USD)

Apr. 2019 – Mar. 2021

Grants-in-Aid for Scientific Research for Early-Career Scientists, by Japan
Society for the Promotion of Science (JSPS), Nobuyuki UTSUMI, “Estimatingtime-accumulation of surface precipitation amount using instantaneous satellite
observations” 4,290,000 JPY (approx. 37,000 USD)

Jul. 2017 – Jun. 2019

Overseas Research Fellowship, by Japan Society for the Promotion of Science(JSPS), “Development of an estimation technique for the contributions of weather
systems to terrestrial hydrology”, 12,045,000 JPY (approx. 105,000 USD)

Oct. 2016 - Mar. 2018

Research Activity Start-up, Grants-in-Aid for Scientific Research, by Japan
Society for the Promotion of Science (JSPS), Nobuyuki UTSUMI, “Investigation

on the precipitation profiles for different weather systems based on satellite
observations”, 2,990,000 JPY (approx. 26,000 USD)
Feb. 2016 - Mar. 2017

The Japan Institute of Country-ology and Engineering Grant 15007., Nobuyuki
UTSUMI, “Development of classification method of precipitation by its causal
weather systems and the identification of the measure weather systems causing
future extreme precipitation over Japan.”, 1,590,000 JPY (approx. 14,000 USD)

PROFESSIONAL SERVICE
2021 – present:

Science Team Member, Precipitation Measurement Mission (PMM), Japan
Aerospace Exploration Agency (JAXA)

2021 – present:

Committee member, Advisory Committee for PMM Successor Mission, Japan
Aerospace Exploration Agency (JAXA)

2021 – present:

Committee member, Advisory Committee for PMM Data Applications, Japan
Aerospace Exploration Agency (JAXA)

Paper reviewer for Climate Dynamics, Environmental Research Letters, Geophysical Research Letters,
Hydrology and Earth System Sciences, Hydrological Research Letters, Hydrological Sciences Journal, Journalof Climate, Journal of Hydrometeorology, Journal of the Meteorological Society of Japan, Nature Climate
Change, Theoretical and Applied Climatology, Water Resources Research

PUBLICATIONS (peer-reviewed)
Bannai, T., H. Xu, N. Utsumi, E. Koo, K. Lu, and H. Kim (2023), Multi-Task Learning for Simultaneous
Retrievals of Passive Microwave Precipitation Estimates and Rain/No-Rain Classification. GeophysicalResearch Letters, 50, e2022GL102283, https://doi.org/10.1029/2022GL102283.
Lee, S. S., Choi, J., Kim, G., Ha, K.-J., Seo, K.-H., Jung, C. H., Um, J., Zheng, Y., Guo, J., Song, S.-K., Lee, Y.
G., and Utsumi, N. (2022), Examination of aerosol impacts on convective clouds and precipitation in
two metropolitan areas in East Asia; how varying depths of convective clouds between the areas
diversify those aerosol effects? Atmospheric Chemistry and Physics, 22(13), 9059–9081.
https://doi.org/10.5194/acp-22-9059-2022
Utsumi, N., and Kim, H. (2022). Observed influence of anthropogenic climate change on tropical cyclone
heavy rainfall. Nature Climate Change, 12(5), 436–440. https://doi.org/10.1038/s41558-022-01344-2
Lee, S. S., K.-J. Ha, M. G. Manoj, M. Kamruzzaman, H. Kim, N. Utsumi, and J. Guo (2021), Mid-latitude
mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affectmicrophysical, dynamic and thermodynamic development in those clouds and interactions?
Atmospheric Chemistry and Physics, 21 (22), 16843-16868
Turk, F. J., S. E. Ringerud, Y. You, A. Camplani, D. Casella, G. Panegrossi, P. Sanò, A. Ebtehaj, C. Guilloteau,
N. Utsumi, C. Prigent, C. Peters-Lidard, (2021), Adapting Passive Microwave-Based Precipitation
Algorithms to Variable Microwave Land Surface Emissivity to Improve Precipitation Estimation fromthe GPM Constellation. Journal of Hydrometeorology, 22 (7), 1755–1781. https://doi.org/10.1175/JHMD-20-0296.1.

Utsumi, N., F. J. Turk, Z. S. Haddad, P.-E. Kirstetter, and H. Kim (2021), Evaluation of Precipitation Vertical
Profiles Estimated by GPM-Era Satellite-Based Passive Microwave Retrievals. Journal of
Hydrometeorology, 22, 95–112, https://doi.org/10.1175/JHM-D-20-0160.1.
Utsumi, N., H. Kim, F. J. Turk, and Ziad. S. Haddad (2019), Improving Satellite-Based Subhourly Surface
Rain Estimates Using Vertical Rain Profile Information. J. Hydrometeor., 20 (5), 1015–1026,
https://doi.org/10.1175/JHM-D-18-0225.1.
Madakumbura, G. D., H. Kim, N. Utsumi, H. Shiogama, E. M. Fischer, Ø. Seland, J. F. Scinocca, D. M.
Mitchell, Y. Hirabayashi, and T. Oki (2019), Event-to-event intensification of the hydrologic cycle from
1.5 °C to a 2 °C warmer world. Scientific Reports, 9, 3483, doi:10.1038/s41598-019-39936-2.
Utsumi, N. and H. Kim (2018), Warm Season Satellite Precipitation Biases for Different Cloud Types OverWestern North Pacific, IEEE Geosci. Remote Sens. Lett., 15(6), 808-812,
doi:10.1109/LGRS.2018.2815590.
Watanabe. S., N. Utsumi, and H. Kim (2018), Projection of the changes in weather Potentially affecting
tourism in the Yaeyama islands under global warming, Journal of Japan Society of Civil Engineers, Ser.
G (Environmental Research), Vol.74, No.5, I_19-I_24.
Utsumi, N., H. Kim, S. Kanae, and T. Oki (2017), Relative contributions of weather systems to mean andextreme global precipitation, J. Geophys. Res. Atmos., 122, 152-167, doi:10.1002/2016JD025222.
Utsumi, N., H. Kim, S. Kanae, and T. Oki (2016), Which weather systems are projected to cause futurechanges in mean and extreme precipitation in CMIP5 simulations?, J. Geophys. Res. Atmos., 121, 522–
537, 2016JD024939, doi:10.1002/2016JD024939.
Utsumi, N., H. Kim, S. Seto, S. Kanae, and T. Oki (2014), Climatological characteristics of fronts in thewestern North Pacific based on surface weather charts, J. Geophys. Res. Atmos., 119(15), 9400–9418,
2014JD021734, doi:10.1002/2014JD021734.
Shen, Y., T. Oki, S. Kanae, N. Hanasaki, N. Utsumi, and M. Kiguchi (2014), Projection of future world water
resources under SRES scenarios: an integrated assessment, Hydrological Sciences Journal, 59(10),1775–1793, doi:10.1080/02626667.2013.862338.
Seto, S., T. Iguchi, N. Utsumi, M. Kiguchi, and T. Oki (2013), Evaluation of Extreme Rain Estimates in the
TRMM/PR Standard Product Version 7 Using High-Temporal-Resolution Rain Gauge Datasets overJapan, Sola, 9, 98–101.
Sarker, R. C., M. Kiguchi, N. Utsumi, K. Oki, and T. Oki (2013), The relationship between extreme
precipitation and surface air temperature in Bangladesh., Journal of Japan Society of Civil Engineers,
Ser. B1 (Hydraulic Engineering), 69(4), I_127–I_132, doi:10.2208/jscejhe.69.I_127.
Maeda, E. E., N. Utsumi, and T. Oki (2012), Decreasing precipitation extremes at higher temperatures intropical regions, Nat Hazards, 64(1), 935–941, doi:10.1007/s11069-012-0222-5.
Utsumi, N., S. Seto, S. Kanae, E. E. Maeda, and T. Oki (2011), Does higher surface temperature intensify
extreme precipitation?, Geophys. Res. Lett., 38(16), L16708.
Shen, Y., T. Oki, N. Utsumi, S. Kanae, and N. Hanasaki (2008), Projection of future world water resources
under SRES scenarios: water withdrawal/Projection des ressources en eau mondiales futures selon lesscénarios du RSSE: prélèvement d’eau, Hydrological Sciences Journal, 53(1), 11–33.
Utsumi, N., S. Kanae, H. Kim, S. Seto, T. Oki, T. Nitta, and Y. Hirabayashi (2008), Importance of wind-induced undercatch adjustment in a gauge-based analysis of daily precipitation over Japan, HydrologicalResearch Letters, 2, 47–51.

PUBLICATIONS (Books, Reports)
Haddad, Z. S., F. J. Turk, N. Utsumi, and P.-E. Kirstetter (2021), Intrinsic uncertainty in the sub-daily satellite
products at their native resolutions, The Joint IPWG/GEWEX Precipitation Assessment (ed. R. Rocaand Z.S. Haddad), WCRP Report 2/2021, World Climate Research Programme (WCRP), Geneva,
Switzerland. DOI: 10.13021/gewex.precip.1.1

PUBLICATIONS (Peer Reviewed, in Japanese)
内海 信幸, G. Liu, and 渡部 哲史 (2022) グリーンランド南部の積雪面マイクロ波特性と GSMaP 降
雪量への影響. 土木学会論文集 b1（水工学）, 78, I_523-I_528,
https://doi.org/10.2208/jscejhe.78.2_I_523.
内海 信幸，金 炯俊，瀬戸 心太 (2021),フィンランドにおける降雪事例を対象とした衛星リモートセンシング降雪推定の検証，土木学会論文集 B1，Vol.77, No.2, I_1201-I_1206
渡部 哲史，内海 信幸，北野 利一，中北 英一 (2021)，将来変化倍率の逆転に着目した d4PDF 領
域実験における 2℃と 4℃上昇の極端降水量の考察，土木学会論文集 B1，Vol.77, No.2，
I_1279-I_1284
渡部 哲史, 中村 みゆき, 内海 信幸 (2018)，アメダス観測点を対象とした d4PDF バイアス補正降水量データセットの開発, 水工学論文集, Vol.63, I_127-132
渡部 哲史, 内海 信幸 (2018) 大規模気候予測情報類型化に向けた d4PDF 日本域降水量の特徴の把握，土木学会論文集 B1(水工学) Vol.74, No.4, I_169-I_174
芳村 圭，中村 晋一郎，鳩野 美佐子，向田 清峻，石塚 悠太，内海 信幸，木口 雅司，金 炯俊，乃田 啓吾，牧野 達哉，鼎信 次郎，沖 大幹 (2016), 平成 27 年 9 月関東・東北豪雨による茨城県常総市における鬼怒川洪水に関する調査及び考察, 土木学会論文集 B1(水工学), 72(4),I_1273-I_1278.
渡部 哲史, 内海 信幸, 鼎 信次郎, 瀬戸 心太, 沖 大幹, 平林 由希子 (2013), GCM,RCP シナリオ,バイアス補正手法の選択が日降水量極値の将来予測に与える影響の考察, 水工学論文集 B1（水工学）, 57, 1_385-390. https://doi.org/10.2208/jscejhe.69.I_385
左藤 智子, 楠原 啓右, 今田 由紀子, 内海 信幸, 鼎 信次郎 (2013), 台風に伴う将来の降水量極値の推定-高知市鏡川の治水計画への利用-, 土木学会論文集 b1（水工学）, 69(4), I_379-I_384,
doi:10.2208/jscejhe.69.I_379.
内海 信幸, 瀬戸 心太, 鼎 信次郎, 沖 大幹 (2012), 気候変動に伴う豪雨変化の要因分析における大気湿潤度の考慮, 土木学会論文集 b1（水工学）, 68(4), I_421-I_426, doi:10.2208/jscejhe.68.I_421.
瀬戸 心太, 井口 俊夫, 内海 信幸, 沖 大幹 (2012), Trmm/Pr バージョン 7 プロダクトの強い雨, 土木
学会論文集 b1（水工学）, 68(4), I_373-I_378, doi:10.2208/jscejhe.68.I_373.
中村 晋一郎, 内海 信幸, 渡部 哲史, 梯 滋郎, 沖 大幹 (2012), 平成 23 年 7 月新潟・福島豪雨による信濃川下流域での出水と被害の特徴: 平成 16 年 7 月新潟・福島豪雨との比較を中心として,
水文・水資源学会誌, 25(2), 113-121.

内海 信幸, 瀬戸 心太, 鼎 信次郎, 沖 大幹 (2011), 日本における 1 時間降水量の極値と地上観測気温の関係, 土木学会論文集 b1（水工学）, 67(4), I_307-I_312, doi:10.2208/jscejhe.67.I_307.
花崎 直太, 内海 信幸, 山田 智子, 沈 彦俊, M. Bengtsson, 鼎 信次郎, 大瀧 雅寛, 沖 大幹 (2007),
温暖化時の水資源影響評価のための全球統合水資源モデルの開発, 水工学論文集 土木学会水工学委員会 編, 51, 229-234.

PRESENTATIONS
F. J. Turk, N. Utsumi, Z. S. Haddad, S. Brown, USING THE COWVR+TEMPEST SENSORCOMBINATION FOR ESTIMATION OF PRECIPITATION STRUCTURE OVER A VARIETY OF
EARTH SURFACE CONDITIONS, Paper ID: 1674 (Poster), IEEE IGARSS 2023, July 16 – 21, 2023,
Pasadena, CA, USA.
Utsumi, N., H. Kim (2022). Detected Impact of Human-induced Global Warming on Tropical Cyclone Heavy
Rainfall, AGU Fall meeting, 12-16 December, 2022, Chicago, USA. (Invited)
Utsumi, N., G. Liu, S. Watanabe (2022). Lack of snow cover scattering signature over south Greenland and its
impact on GSMaP passive microwave snowfall retrieval, 10th Workshop of the International
Precipitation Working Group, 14 June, 2022, Fort Collins, CO, USA & Online
Utsumi, N., F. J. Turk, Z. S. Haddad, P. E. Kirstetter, and H. Kim (2021). Vertical precipitation profiles
estimated by satellite-based passive microwave retrievals, 26 April 2021, EGU General Assembly 2021,
OnlineUtsumi, N. (Speaker as an Early Career Researcher), How can early career scientists benefit from WCRP?,
WCRP Climate Research Forum: Climate research priorities for the next decade, 7th April 2021, Online(Invited)
Utsumi, N., F. J. Turk, Z. S. Haddad, P. E. Kirstetter, and H. Kim (2020). Precipitation Vertical Profiles
Estimated by GPM-era Satellite-based Passive Microwave Retrievals, e-poster ID 164, Presented at the
Earth Observation for Water Cycle Science 2020, 2020, November 16, Online.
Haddad, Z., S. Hristova-Veleva, and N. Utsumi, 2020: Decadal trends in convection from satellite microwave
observations of near-surface wind and deep precipitating clouds, EGU General Assembly 2020, 4 – 8
May, 2020, Online.
Utsumi, N. and H. Kim, Machine Learning Approach for Estimating Storm-top Height Based on Passive
Microwave Brightness Temperature, Asia Oceania Geosciences Society 17th Annual Meeting, 28 June –4 July, 2020, Hongcheon, South Korea. (Conference canceled).
Kim, H., G. D. Madakumbura, S. Wang, H. Shiogama, E. M. Fischer, N. Utsumi, JH Yoon, Intensification of
Wet and Dry Swing and Flood and Heatwave Compound Extreme in Japan 2018, Asia Oceania
Geosciences Society 17th Annual Meeting, 28 June – 4 July, 2020, Hongcheon, South Korea.
(Conference canceled).
Utsumi, N. and F. J. Turk, How well do passive microwave algorithms estimate vertical profiles ofprecipitation?, in AGU Fall meeting, 9-13 December, 2019, San Francisco, USA.
Kim, H., G. D. Madakumbura, S. Wang, H. Shiogama, E. M. Fischer, N. Utsumi, JH Yoon, Flood andheatwave in Japan 2018 and future increase of consecutive compound risk in a warmer world, in AGU
Fall meeting, 9-13 December, 2019, San Francisco, USA.

Watanabe, S., H. Kim, N. Utsumi, Developing a method adjusting bias of long-term and multivariate outputs
from ensemble experiments by Earth system models for the projection of hydrology under climatechange, in AGU Fall meeting, 9-13 December, 2019, San Francisco, USA. (Poster)Turk, F. J. and N. Utsumi, Investigating Vertical Precipitation Profiles Estimated from a Passive Microwave
Algorithm, Separated by Land Surface Conditions, 2019 NASA PMM Science Team Meeting, 4 – 8
November, 2019, Indianapolis, USA.
Utsumi, N., H. Kim, F. J. Turk, and Z. S. Haddad, Using vertical rain profile information to improve satellitebased sub-hourly surface rain estimates, in 12th International Precipitation Conference, 19-21 June,
2019, Irvine, California, USA. (Poster)
Kim, H. and N. Utsumi, Systematic biases associated with cloud types in satellite precipitation estimations, in12th International Precipitation Conference, 19-21 June, 2019, Irvine, California, USA. (Poster)Turk, F. J., N. Utsumi, Z. S. Haddad, P. Kirstetter, Towards Consistency between the Near-Surface and Vertical
Precipitation Structure in the GPM Precipitation Constellation Data Record, in 12th International
Precipitation Conference, 19-21 June, 2019, Irvine, California, USA. (Poster)
Utsumi, N., H. Kim, F. J. Turk, and Z. S. Haddad, Improving satellite-based sub-hourly surface rain estimatesusing vertical rain profile information, in AGU Fall meeting, 10-14 December, 2018, Washington, D.C.,
USA. (Poster)
Watanabe, S., H. Kim, N. Utsumi, Development of a bias adjustment method for large ensemble experimentand hydrological applications, in AGU Fall meeting, 10-14 December, 2018, Washington, D.C., USA.
(Poster)Kim, H., I. G. De La Torre Villarreal, A. E. Amador Umanzor, N. Utsumi, Linkage between regional weather
systems and hydrologic cycles over Central America, in AGU Fall meeting, 10-14 December, 2018,
Washington, D.C., USA. (Poster)
Utsumi, N., H. Kim, F. J. Turk, and Z. S. Haddad, Improving satellite-based sub-hourly surface rain estimatesusing vertical rain profile information, in 9TH Workshop of International Precipitation Working Group,
5-9 November 2018, Seoul, South Korea.
Utsumi, N., and F. J. Turk, A self-consistent ensemble approach to propagate detection, estimation, andevolution uncertainties through Global Precipitation Measurement surface precipitation mapping. in
SPIE Asia-Pacific Remote Sensing, 26 September, 2018, Honolulu, Hawaii, USA, No. 10782-26.
Utsumi, N. and H. Kim, Systematic Differences in Satellite Precipitation Products Associated with Cloud
Types over Western North Pacific, in AGU Fall meeting, 11 -15 December, 2017, New Orleans, USA.
Watanabe, S., H. Kim, N. Utsumi, Developing an approach to effectively use super ensemble experiments forthe projection of hydrological extremes under climate change, in AGU Fall meeting, 11 -15 December,
2017, New Orleans, USA.
Utsumi, N., H. Kim, Shinjiro Kanae, and T. Oki, Relative contributions of different weather systems to thechanges in annual mean and extreme precipitation in CMIP5 models, in AGU Fall meeting, 12 -16
December, 2016, San Francisco, USA. (Poster)
Watanabe, S., N. Utsumi, M. Take, A. Iida, Impact assessment of climate change on tourism in the Pacificsmall islands based on the database of long-term high-resolution climate ensemble experiments, in AGU
Fall meeting, 12 -16 December, 2016, San Francisco, USA.

Revel, M., N. Utsumi, S. Yoshikawa, S. Kanae, Predictability of Seasonal Precipitation Intensities Associatedwith Tropical Cyclones and Disturbances in Indo-China Region, in AGU Fall meeting, 12 -16
December, 2016, San Francisco, USA. (Poster)
Utsumi, N., H. Kim, and T. Oki, Intercomparison of satellite precipitation products for different cloud types, in
8th IPWG and 5th IWSSM Joint Workshop, 3 – 7 Oct, 2016, Bologna, Italy.
Revel, M., N. Utsumi, S. Yoshikawa, S. Kanae, Contribution of Pacific Japan Teleconnection to Different
Weather Systems in Thailand Monsoon Domain, 2016 Annual Conference, Japan Society of Hydrology
and Water Resources, 15 – 17 Sep. 2016, Fukushima.
Utsumi, N., H. Kim, and T. Oki, Development of a tracer scheme for the causal weather systems ofprecipitation for global hydrological models, in Proceedings of the 7th International Conference on
Water Resources and Environment Research, s02-19-1 (pp.1-2), 5 – 9 June, 2016, Kyoto, Japan.
Utsumi, N., H. Kim, S. Kanae, and T. Oki, Relative contributions of weather systems to the changes of annualand extreme precipitation with global warming, 2015 Korea Water Resources Association Conference,
Gangwon-do, 28-29 May 2015, South Korea.
Utsumi, N., H. Kim, and T. Oki, Contribusions of weather system to future precipitation change over the East
Asia in CMIP5 models, Third International Workshop on Studies on future climate projection of the
Asian region utilizing the CMIP5 multi-model ensemble data, 27th March, 2015, Tokyo, Japan (Poster)
Utsumi, N., H. Kim and T. Oki, Estimation of Precipitation Biases in CMIP5 Models for Different Synoptic
Weather Systems, the 7th International Conference on the Global Water and Energy Cycle, 14-17 July
2014, Hague, The Netherlands (Poster)
Utsumi, N., H. Kim, S. Seto, S. Kanae, and T. Oki, Development of a front dataset in 1.0-degree grids for the
East Asia based on surface weather chart and its applications, IG32-ST31-AS53-A017, AOGS 11th
Annual Meeting (AOGS2014), 28 July to 01 August 2014, Sapporo.
Kim, H., N. Utsumi, and T. Oki, Estimation of Uncertainty Propagation through Terrestrial Hydrologic
Simulations and Objective Evaluation Strategy for In-situ and Satellite Observations of Precipitation,2013 AGU Fall Meeting, 9-13 December 2013, San Francisco, USA.
Yoshimura, K., N. Utsumi, H. Fudeyasu, T. Yamada, and H. Kim, Observation and Modeling studies ofrelationship between surface temperature and extreme precipitation, CLIMATE 2013, 2013, Lawrence
Berkeley National Laboratory, USA.
Sarker, R. C., M. Kiguchi, N. Utsumi, K. Oki, and T. Oki, The relationship between extreme precipitation andsurface air temperature in Bangladesh., The 57th Conference on Hydraulic Engineering, March, 2013,
Nagoya.
Utsumi, N., S. Seto, S. Kanae, and T. Oki, Winter time extra tropical cyclones and associated precipitation
around Japan under warmer climate, AOGS-AGU (WPGM) Joint Assembly 2012, 13-17 Aug. 2012,
SingaporeSato, T., Y. Imada, N. Utsumi, M. Mori, S. Kanae, Changes in heavy rainfall associated with typhoons in the
Asia-Pacific region since the late 20th century, AOGS-AGU (WPGM) Joint Assembly 2012, 13-17 Aug.
2012, Singapore
Utsumi, N., T. Oki, S. Seto, S. Kanae, and E. E. Maeda, Relationships between extreme daily precipitation
intensity and temperature over the world based on in-situ observation data, Geophysical Research

Abstracts Vol. 13, EGU2011-4805-2, 2011, EGU General Assembly 2011, 3 – 8 April, 2011, Vienna.
(Poster)
Utsumi, N., S. Seto, S. Kanae and T. Oki：AGU Fall Meeting, “Analyzing the relations of hourly precipitation
extremes and temperature over Japan based on ground observational records”, December 2010, San
Francisco, USA. (Poster)

PRESENTATIONS (in Japanese)
内海 信幸， 金 炯俊 (2022). 北西太平洋で観測された熱帯低気圧豪雨の変化に対する人為起源の気候変動の影響， 水文・水資源学会/日本水文科学会 2022 年度研究発表会，2022 年 9 月 4 日 –7 日，京都大学宇治キャンパス，京都
内海 信幸，Guosheng Liu，渡部哲史 (2021).グリーンランド南部における積雪面マイクロ波シグナ
ルの特徴と GSMaP 降雪リトリーバルへの影響，GPM および衛星シミュレータ合同研究集会，2022 年 3 月 4 日，オンライン
内海 信幸，北西太平洋で観測された熱帯低気圧に伴う豪雨の変化傾向と気候変動の関係，第 13 回
京都大学大気科学コロキウム (13th Atmospheric Science Colloquium)，2021 年 11 月 5 日，オンライン（Invited）
内海 信幸，金 炯俊，瀬戸 心太（2021）,フィンランドにおける降雪事例を対象とした衛星リモー
トセンシング降雪推定の検証，水工学講演会，2021 年 12 月 10 日，オンライン
内海 信幸，金 炯俊 (2021). 北西太平洋における熱帯低気圧に伴う豪雨の過去の変化傾向と気候変動の関係，水文・水資源学会/日本水文科学会 2021 年度研究発表会, 2021 年 9 月 15 日 – 18日，オンライン
渡部 哲史，内海 信幸，北野 利一，中北 英一（2021），将来変化倍率の逆転に着目した d4PDF 領
域実験における 2℃と 4℃上昇の極端降水量の考察，水工学講演会，2021 年 12 月 10 日，オンライン
内海 信幸, F. J. Turk, Z.S. Haddad, P.-E. Kirstetter, Hyungjun Kim, マイクロ波放射計による降水鉛直分
布の推定, GPM および衛星シミュレータ合同研究集会（名古屋⼤学宇宙地球環境研究所研究集会）, 2021 年 3 月 15-16 日, オンライン
渡部 哲史, 中村 みゆき, 内海 信幸，アメダス観測点を対象とした d4PDF バイアス補正降水量データセットの開発, 第 63 回水工学講演会，2018 年 11 月 25 – 27 日，札幌
渡部 哲史, 内海 信幸，大規模気候予測情報類型化に向けた d4PDF 日本域降水量の特徴の把握，第62 回水工学講演会，2018 年 3 月 5 – 7 日，岡山
内海 信幸，Kim Hyungjun，沖 大幹，鼎 信次郎，気象システム別降水割合のグローバルな将来変化，水文・水資源学会 2016 年度総会研究発表会，2016 年 9 月 15 日，福島
芳村 圭，中村 晋一郎，鳩野 美佐子，向田 清峻，石塚 悠太，内海 信幸，木口 雅司，金 炯俊，乃田 啓吾，牧野 達哉，鼎 信次郎，沖 大幹, 平成 27 年 9 月関東・東北豪雨による茨城県常総市における鬼怒川洪水に関する調査及び考察, 第 60 回水工学講演会，2016 年 3 月 14 – 16日，仙台
内海 信幸，降水プロダクトの検証への気象システム検出手法の応用，2015 年度第 1 回 GSMaP 研究会，2015 年 5 月 20 日，つくば内海 信幸，Kim Hyungjun，沖 大幹，東アジアにおける将来の降水量変化に対する気象システム別の寄与度評価，日本気象学会 2015 年春季大会，2015 年 5 月 21 日～24 日,つくば
内海 信幸，金 炯俊，沖 大幹，原因となる降水システムに着目した将来の降水量変化の理解，水文・水資源学会 2014 年度総会研究発表会，2014 年 9 月 25 日，宮崎
内海 信幸，瀬戸 心太，鼎 信次郎，沖 大幹，地上天気図を元にした前線グリッドデータの作成，第 21 回地球環境シンポジウム，2013 年 9 月 12 – 13 日，仙台（平成 26 年地球環境優秀講演賞
受賞）
渡部 哲史, 内海 信幸, 鼎 信次郎, 瀬戸 心太, 沖 大幹, 平林 由希子 (2013), GCM,RCP シナリオ,バイアス補正手法の選択が日降水量極値の将来予測に与える影響の考察, 第 57 回水工学講演会，2013 年 3 月，名古屋
左藤 智子, 楠原 啓右, 今田 由紀子, 内海 信幸, 鼎信次郎 (2013), 台風に伴う将来の降水量極値の推定-高知市鏡川の治水計画への利用-, 第 57 回水工学講演会，2013 年 3 月，名古屋
内海 信幸, 瀬戸 心太, 鼎 信次郎, 沖 大幹 (2012), 気候変動に伴う豪雨変化の要因分析における大気湿潤度の考慮, 第 56 回水工学講演会，2012 年 3 月，松山
瀬戸 心太, 井口 俊夫, 内海 信幸, 沖 大幹 (2012), Trmm/Pr バージョン 7 プロダクトの強い雨, 第56 回水工学講演会，2012 年 3 月，松山
内海 信幸, 瀬戸 心太, 鼎 信次郎, 沖 大幹 (2011), 日本における 1 時間降水量の極値と地上観測気温の関係, 第 55 回水工学講演会，2011 年 3 月 8 – 10 日，東京
内海 信幸，瀬戸 心太，鼎 信次郎，沖 大幹，水文・水資源学会 2010 年度研究発表会（2010）「日本における観測降水量の強度と地上気温の関係」，2010 年 9 月（ポスター），東京
花崎 直太, 内海 信幸, 山田 智子, 沈 彦俊, M. Bengtsson, 鼎信次郎, 大瀧雅寛, 沖大幹, 温暖化時の水資源影響評価のための全球統合水資源モデルの開発, 第 51 回水工学講演会，2007 年 3 月 6– 8 日，東京
内海 信幸，沈 彦俊，沖 大幹，花崎 直太，鼎 信次郎，川島 博之，温暖化シナリオに基づいた将来のグローバルな水需給アセスメント、2006 年度水文・水資源学会研究発表会，2006 年 8月，岡山 (ポスター)

Outreach / Media (in Japanese)
台風の豪雨 温暖化により増加. 朝日新聞. 2022-06-14, 朝刊
地球温暖化が台風豪雨の頻度に影響、東大などが証明. MIT Technology Review, 2022-05-10
⼈間活動による温暖化が、台⾵豪⾬の頻度に影響 〜東アジアにおける台⾵豪⾬の増加傾向への寄与を証明〜. 東京大学生産技術研究所プレスリリース. 2022-04-29.

Research Grants (in Japanese)【日本学術振興会科学研究費助成事業（科研費），代表課題】
2021/4 – 2025/3: 基盤研究（B）,「気象システムに着目した東アジアにおける洪水の将来変化メカ
ニズムの解明」, 13,000,000 円
2019/4 – 2021/3：若手研究，「衛星観測による瞬時値情報を用いた時間積算降水量推定手法の開発」，代表，4,290,000 円
2016/8 – 2018/3：研究活動スタート支援「衛星観測に基づく気象システム別降水鉛直構造の解明」，
代表，2,990,000 円【日本学術振興会科学研究費助成事業（科研費），分担課題】
2022/04 – 2026/03: 学術変革領域研究(A)・領域略称「水共生学」（領域代表：荒谷邦雄）計画研究（総括班）（計画研究代表：荒谷邦雄），分担，4,000,000 円（予定分担総額）
2021/09 – 2026/03: 学術変革領域研究(A)・領域略称「水共生学」（領域代表：荒谷邦雄）計画研究「水共生学の創生に向けた水とその周辺環境情報の創出と展開」（計画研究代表：渡部哲史），分担，10,000,000 円（予定分担総額）
2018/10 – 2023/3: 国際共同研究加速基金(国際共同研究強化(B))，
「衛星観測を活用したデータ駆動型の水文季節予報手法の開発」（代表：Kim Hyungjun），分担，5,000,000 円（予定分担総額）【その他外部資金，代表課題】
2020/10 – 2022/3: 京都先端科学大学研究助成（分野横断型研究活動支援），「衛星搭載マイクロ波放射計による全休降水観測の高度化」，代表，2,000,000 円
2022/4 – 2025/3: 宇宙航空研究開発機構第３回地球観測研究公募（有償委託研究），「GSMaP マイク
ロ波放射計降雪推定アルゴリズムの改良」，11,221,000 円
2021/4 – 2022/3：宇宙航空研究開発機構第２回地球観測研究公募（有償共同研究），「衛星降雪推定
アルゴリズムの改良と開発に向けた GPM/GSMaP プロダクトの検証」，代表，1,750,000 円
2017/7 – 2019/6：日本学術振興会海外特別研究員，「陸域水循環に対する気象システム別の降水寄与度推定手法の開発」，代表，12,045,000 円
2016/2 – 2017/3:国土技術研究センター研究開発助成（助成金），「原因となる気象システムによる降水の分類アルゴリズムの開発とそれを用いた将来の日本に気における極端降水の要因特定に関する研究」，代表，1,590,000 円【その他外部資金，分担課題】
2021/4 – 2024/3 JST 戦略的国際科学技術協力推進事業ベルモントフォーラム,「Biosphere and LandUse Exchanges with Groundwater and soils in Earth system Models」(代表：Kim Hyungjun)，分
担，4,000,000 円（予定分担総額）