Riko Oki

40 papers C 29Journal 8Unranked 3
YearRankTypeTitle / Venue / Authors
2022 J jnl
Assessments of Doppler Velocity Errors of EarthCARE Cloud Profiling Radar Using Global Cloud System Resolving Simulations: Effects of Doppler Broadening and Folding.
IEEE Trans. Geosci. Remote. Sens.
Yuichiro Hagihara, Yuichi Ohno, Hiroaki Horie, Woosub Roh, Masaki Satoh, Takuji Kubota, Riko Oki
2022 J jnl
Calibration of the Dual-Frequency Precipitation Radar Onboard the Global Precipitation Measurement Core Observatory.
IEEE Trans. Geosci. Remote. Sens.
Takeshi Masaki, Toshio Iguchi, Kaya Kanemaru, Kinji Furukawa, Naofumi Yoshida, Takuji Kubota, Riko Oki
2022 C conf
Enhancing Precipitation Monitoring Using GPM Products: Integration with Ground-Based Radars.
IGARSS
Takuji Kubota, Yoichi Saito, Kinji Furukawa, Moeka Yamaji, Riko Oki
2020 C conf
Evaluation of Cloud Liquid Water Database Using Global CloudSystem Resolving Model for GPM/DPR Algorithms.
IGARSS
Takuji Kubota, Masaki Satoh, Takeshi Masaki, Toshio Iguchi, Shinta Seto, Tomoe Nasuno, Riko Oki
2020 J jnl
Precipitation Extremes Monitoring Using the Near-Real-Time GSMaP Product.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Tomoko Tashima, Takuji Kubota, Tomoaki Mega, Tomoo Ushio, Riko Oki
2019 J jnl
Gauge-Adjusted Global Satellite Mapping of Precipitation.
IEEE Trans. Geosci. Remote. Sens.
Tomoaki Mega, Tomoo Ushio, Takahiro Matsuda, Takuji Kubota, Misako Kachi, Riko Oki
2019 C conf
Observing System Simulation Experiment on The Accuracy of Global Satellite Mapping of Precipitation (GSMAP) by Future Small Precipitation Radar Constellation.
IGARSS
Moeka Yamaji, Takuji Kubota, Riko Oki
2019 C conf
Precipitation Extremes Monitoring Using Global Satellite Mapping of Precipitation (GSMaP) Products.
IGARSS
Tomoko Tashima, Takuji Kubota, Riko Oki
2018 C conf
Development of A Statistical Method for Reducing Sidelobe Clutter in High Sensitivity Mode of GPM/Kapr.
IGARSS
Takuji Kubota, Toshio Iguchi, Takeshi Masaki, Naofumi Yoshida, Riko Oki
2018 C conf
Scan Pattern Change Test Operations of the Dual-Frequency Precipitation Radar on the Global Precipitation Measurement Core Spacecraft.
IGARSS
Kinji Furukawa, Kosuke Yamamoto, Takuji Kubota, Riko Oki, Toshio Iguchi
2017 C conf
Prime mission results of the dual-frequency precipitation radar on the global precipitation measurement core spacecraft.
IGARSS
Kinji Furukawa, Tomomi Nio, Riko Oki, Takuji Kubota, Toshio Iguchi
2017 C conf
Recent progress in global satellite mapping of precipitation (GSMAP) product.
IGARSS
Takuji Kubota, Kazumasa Aonashi, Tomoo Ushio, Shoichi Shige, Yukari N. Takayabu, Yoriko Arai, Tomoko Tashima, Misako Kachi, Riko Oki
2017 C conf
Study on measurement performance of future space-based Doppler wind lidar in Japan.
IGARSS
Shoken Ishii, Kozo Okamoto, Philippe Baron, Toshiyuki Ishibashi, Taichu Tanaka, Tsuyoshi Sekiyama, Takashi Maki, Takuji Kubota, Yohei Satoh, Daisuke Sakaizawa, Koji Yamashita, Kyoka Gamo, Satoshi Ochiai, Motoaki Yasui, Riko Oki, Masaki Satoh, Toshiki Iwasaki
2016 C conf
Microphysical features of solid/melting particles by Ground-based direct observations for the GPM/DPR algorithm development.
IGARSS
Kenji Suzuki, Katsuhiro Nakagawa, Yuki Kaneko, Riko Oki, Kenji Nakamura
2016 J jnl
Overview of the End-of-Mission Observation Experiments of Precipitation Radar Onboard the Tropical Rainfall Measuring Mission Satellite.
IEEE Trans. Geosci. Remote. Sens.
Nobuhiro Takahashi, Hiroshi Hanado, Kenji Nakamura, Kaya Kanemaru, Katsuhiro Nakagawa, Toshio Iguchi, Tomomi Nio, Takuji Kubota, Riko Oki, Naofumi Yoshida
2016 C conf
Precipitation rates estimated with GPM's Dual-frequency Radar.
IGARSS
Toshio Iguchi, Shinta Seto, Jun Awaka, Robert Meneghini, Takuji Kubota, V. Chandra, Naofumi Yoshida, Nozomi Kawamoto, Riko Oki
2016 J jnl
Radar Attenuation and Reflectivity Measurements of Snow With Dual Ka-Band Radar.
IEEE Trans. Geosci. Remote. Sens.
Masanori Nishikawa, Kenji Nakamura, Yasushi Fujiyoshi, Katsuhiro Nakagawa, Hiroshi Hanado, Haruya Minda, Sento Nakai, Toshiro Kumakura, Riko Oki
2016 C conf
Recent advances of the TRMM PR beam-mismatch correction after the orbit boost.
IGARSS
Kaya Kanemaru, Takuji Kubota, Takeshi Masaki, Riko Oki, Kinji Furukawa, Toshio Iguchi, Hiroshi Hanado, Naofumi Yoshida
2015 C conf
A decadal variability of semi-global precipitation by TRMM PR.
IGARSS
Kaya Kanemaru, Takuji Kubota, Misako Kachi, Riko Oki, Toshio Iguchi, Yukari N. Takayabu
2015 C conf
Current status of GPM/DPR level 1 algorithm development and DPR calibration.
IGARSS
Takeshi Masaki, Takuji Kubota, Riko Oki, Kinji Furukawa, Masahiro Kojima, Takeshi Miura, Toshio Iguchi, Hiroshi Hanado, Hiroki Kai, Naofumi Yoshida, Tomohiko Higashiuwatoko
2015 C conf
Development of a routine to reduce sidelobe clutter in GPM/KUPR-L2 algorithm.
IGARSS
Takuji Kubota, Takeshi Masaki, Toshio Iguchi, Shinji Urita, Naofumi Yoshida, Hiroshi Hanado, Riko Oki
2015 C conf
The orbital operations status of the dual-frequency precipitation radar on the global precipitation measurement core spacecraft.
IGARSS
Kinji Furukawa, Masahiro Kojima, Tomomi Nio, Toshiyuki Konishi, Riko Oki, Takeshi Masaki, Takuji Kubota, Yuki Kaneko, Misako Kachi, Toshio Iguchi, Hiroshi Hanado, Katsuhiro Nakagawa
2014 C conf
Development of level 1 algorithm of Dual Frequency Precipitation Radar (DPR) for the Global Precipitation Measurement (GPM).
IGARSS
Takeshi Masaki, Takuji Kubota, Riko Oki, Masahiro Kojima, Kinji Furukawa, Takeshi Miura, Hiroki Kai, Toshio Iguchi, Hiroshi Hanado, Naofumi Yoshida, Tomohiko Higashiuwatoko
2014 J jnl
Evaluation of Precipitation Estimates by at-Launch Codes of GPM/DPR Algorithms Using Synthetic Data from TRMM/PR Observations.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Takuji Kubota, Naofumi Yoshida, Shinji Urita, Toshio Iguchi, Shinta Seto, Robert Meneghini, Jun Awaka, Hiroshi Hanado, Satoshi Kida, Riko Oki
2014 C conf
Recent improvements in the global satellite mapping of precipitation (GSMaP).
IGARSS
Misako Kachi, Takuji Kubota, Kazumasa Aonashi, Tomoo Ushio, Shoichi Shige, Munehisa Yamamoto, Tomoaki Mega, Riko Oki
2013 C conf
Development of synthetic GPM/DPR data from TRMM/PR and evaluation of GPM/DPR level-2 "at-launch" algorithms using them.
IGARSS
Takuji Kubota, Naofumi Yoshida, Shinji Urita, Toshio Iguchi, Shinta Seto, Jun Awaka, Hiroshi Hanado, Satoshi Kida, Riko Oki
2013 C conf
Reduction of discontinuity due to the orbit boost in TRMM Precipitation Radar product for climate studies.
IGARSS
Satoshi Kida, Takuji Kubota, Misako Kachi, Riko Oki, Toshio Iguchi, Yukari N. Takayabu
2012 C conf
Development of cloud liquid water database using global cloud-system resolving model for GPM/DPR algorithm.
IGARSS
Takuji Kubota, Masaki Satoh, Tomoe Nasuno, Shinta Seto, Toshio Iguchi, Riko Oki
2012 C conf
Development of precipitation retrieval algorithm over land for a satellite-borne microwave sounder.
IGARSS
Satoshi Kida, Takuji Kubota, Misako Kachi, Shoichi Shige, Riko Oki
2011 C conf
Comparison between TRMM/PR and AMeDAS ground rain gauge network in terms of annual rainfall.
IGARSS
Nozomi Kawamoto, Riko Oki, Shuji Shimizu
2011 C conf
Development of synthetic GPM/DPR data using KaPR sampling experiment of the TRMM/PR.
IGARSS
Takuji Kubota, Naofumi Yoshida, Shuji Shimizu, Riko Oki, Hiroshi Hanado, Toshio Iguchi
2010 C conf
Development of spaceborne radar simulator by NICT and JAXA using JMA cloud-resolving model.
IGARSS
Takuji Kubota, Hisaki Eito, Kazumasa Aonashi, Akihiro Hashimoto, Toshio Iguchi, Hiroshi Hanado, Shuji Shimizu, Naofumi Yoshida, Riko Oki
2009 — conf
A Long-term Trend Observed in TRMM/PR Monthly Rainfall Products and an Evaluation of Sampling Error by a Bootstrap Method.
IGARSS (1)
Yasuhisa Iida, Takuji Kubota, Toshio Iguchi, Riko Oki
2009 J jnl
Improved Correction of Beam Mismatch of the Precipitation Radar After Orbit Boost of the TRMM Satellite.
IEEE Trans. Geosci. Remote. Sens.
Tetsuya Tagawa, Hiroshi Hanado, Shuji Shimizu, Riko Oki
2008 — conf
Derivation of sub-footprint scale /Spl sigma/
IGARSS (4)
Tetsuya Tagawa, Shuji Shimizu, Riko Oki
2008 — conf
Evaluation of the Effect of the Orbit Boost of the TRMM Satellite on the PR Rain Estimates.
IGARSS (4)
Shuji Shimizu, Toshio Iguchi, Riko Oki, Masafumi Hirose, Tetsuya Tagawa
2007 C conf
Modification of the beam mismatch correction algorithm.
IGARSS
Tetsuya Tagawa, Shuji Shimizu, Riko Oki
2006 C conf
Development and Validation of Spaceborne Dualfrequency Precipitation Radar for GPM.
IGARSS
Shuji Shimizu, Riko Oki, Misako Kachi, Masahiro Kojima, Toshio Iguchi, Kenji Nakamura
2005 C conf
Sampling simulation for estimating the sampling error of space-time average rain rate for TRMM and GPM mission.
IGARSS
Yasuhisa Iida, Ken'ichi Okamoto, Tomoo Ushio, Riko Oki
2003 C conf
Japan's progress for the global precipitation measurement (GPM).
IGARSS
Kenji Nakamura, Toshio Iguchi, Riko Oki