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Riko Oki
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Journal Articles
- 2022
- [j8]Yuichiro Hagihara
, Yuichi Ohno, Hiroaki Horie
, Woosub Roh, Masaki Satoh
, Takuji Kubota
, Riko Oki:
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. 60: 1-9 (2022) - [j7]Takeshi Masaki
, Toshio Iguchi
, Kaya Kanemaru
, Kinji Furukawa, Naofumi Yoshida, Takuji Kubota
, Riko Oki:
Calibration of the Dual-Frequency Precipitation Radar Onboard the Global Precipitation Measurement Core Observatory. IEEE Trans. Geosci. Remote. Sens. 60: 1-16 (2022) - 2020
- [j6]Tomoko Tashima
, Takuji Kubota
, Tomoaki Mega
, Tomoo Ushio
, Riko Oki:
Precipitation Extremes Monitoring Using the Near-Real-Time GSMaP Product. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 13: 5640-5651 (2020) - 2019
- [j5]Tomoaki Mega
, Tomoo Ushio
, Takahiro Matsuda, Takuji Kubota
, Misako Kachi, Riko Oki:
Gauge-Adjusted Global Satellite Mapping of Precipitation. IEEE Trans. Geosci. Remote. Sens. 57(4): 1928-1935 (2019) - 2016
- [j4]Masanori Nishikawa, Kenji Nakamura, Yasushi Fujiyoshi, Katsuhiro Nakagawa, Hiroshi Hanado, Haruya Minda, Sento Nakai, Toshiro Kumakura, Riko Oki:
Radar Attenuation and Reflectivity Measurements of Snow With Dual Ka-Band Radar. IEEE Trans. Geosci. Remote. Sens. 54(2): 714-722 (2016) - [j3]Nobuhiro Takahashi, Hiroshi Hanado, Kenji Nakamura, Kaya Kanemaru
, Katsuhiro Nakagawa, Toshio Iguchi, Tomomi Nio, Takuji Kubota
, Riko Oki, Naofumi Yoshida:
Overview of the End-of-Mission Observation Experiments of Precipitation Radar Onboard the Tropical Rainfall Measuring Mission Satellite. IEEE Trans. Geosci. Remote. Sens. 54(6): 3450-3459 (2016) - 2014
- [j2]Takuji Kubota
, Naofumi Yoshida, Shinji Urita, Toshio Iguchi, Shinta Seto, Robert Meneghini, Jun Awaka, Hiroshi Hanado, Satoshi Kida, Riko Oki:
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. 7(9): 3931-3944 (2014) - 2009
- [j1]Tetsuya Tagawa, Hiroshi Hanado, Shuji Shimizu, Riko Oki:
Improved Correction of Beam Mismatch of the Precipitation Radar After Orbit Boost of the TRMM Satellite. IEEE Trans. Geosci. Remote. Sens. 47(10): 3469-3479 (2009)
Conference and Workshop Papers
- 2022
- [c32]Takuji Kubota
, Yoichi Saito, Kinji Furukawa, Moeka Yamaji, Riko Oki:
Enhancing Precipitation Monitoring Using GPM Products: Integration with Ground-Based Radars. IGARSS 2022: 5248-5251 - 2020
- [c31]Takuji Kubota
, Masaki Satoh, Takeshi Masaki, Toshio Iguchi, Shinta Seto, Tomoe Nasuno, Riko Oki:
Evaluation of Cloud Liquid Water Database Using Global CloudSystem Resolving Model for GPM/DPR Algorithms. IGARSS 2020: 3600-3603 - 2019
- [c30]Tomoko Tashima, Takuji Kubota
, Riko Oki:
Precipitation Extremes Monitoring Using Global Satellite Mapping of Precipitation (GSMaP) Products. IGARSS 2019: 4463-4466 - [c29]Moeka Yamaji, Takuji Kubota
, Riko Oki:
Observing System Simulation Experiment on The Accuracy of Global Satellite Mapping of Precipitation (GSMAP) by Future Small Precipitation Radar Constellation. IGARSS 2019: 7594-7597 - 2018
- [c28]Kinji Furukawa, Kosuke Yamamoto, Takuji Kubota
, Riko Oki, Toshio Iguchi:
Scan Pattern Change Test Operations of the Dual-Frequency Precipitation Radar on the Global Precipitation Measurement Core Spacecraft. IGARSS 2018: 8331-8334 - [c27]Takuji Kubota
, Toshio Iguchi, Takeshi Masaki, Naofumi Yoshida, Riko Oki:
Development of A Statistical Method for Reducing Sidelobe Clutter in High Sensitivity Mode of GPM/Kapr. IGARSS 2018: 8347-8348 - 2017
- [c26]Kinji Furukawa, Tomomi Nio, Riko Oki, Takuji Kubota
, Toshio Iguchi:
Prime mission results of the dual-frequency precipitation radar on the global precipitation measurement core spacecraft. IGARSS 2017: 2708-2711 - [c25]Takuji Kubota
, Kazumasa Aonashi, Tomoo Ushio
, Shoichi Shige, Yukari N. Takayabu, Yoriko Arai, Tomoko Tashima, Misako Kachi, Riko Oki:
Recent progress in global satellite mapping of precipitation (GSMAP) product. IGARSS 2017: 2712-2715 - [c24]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
:
Study on measurement performance of future space-based Doppler wind lidar in Japan. IGARSS 2017: 4238-4245 - 2016
- [c23]Toshio Iguchi, Shinta Seto, Jun Awaka, Robert Meneghini, Takuji Kubota
, V. Chandra, Naofumi Yoshida, Nozomi Kawamoto, Riko Oki:
Precipitation rates estimated with GPM's Dual-frequency Radar. IGARSS 2016: 3917-3918 - [c22]Kaya Kanemaru
, Takuji Kubota
, Takeshi Masaki, Riko Oki, Kinji Furukawa, Toshio Iguchi, Hiroshi Hanado, Naofumi Yoshida:
Recent advances of the TRMM PR beam-mismatch correction after the orbit boost. IGARSS 2016: 3934-3937 - [c21]Kenji Suzuki, Katsuhiro Nakagawa, Yuki Kaneko, Riko Oki, Kenji Nakamura:
Microphysical features of solid/melting particles by Ground-based direct observations for the GPM/DPR algorithm development. IGARSS 2016: 3941-3944 - 2015
- [c20]Takeshi Masaki, Takuji Kubota
, Riko Oki, Kinji Furukawa, Masahiro Kojima, Takeshi Miura, Toshio Iguchi, Hiroshi Hanado, Hiroki Kai, Naofumi Yoshida, Tomohiko Higashiuwatoko:
Current status of GPM/DPR level 1 algorithm development and DPR calibration. IGARSS 2015: 2615-2618 - [c19]Kaya Kanemaru
, Takuji Kubota
, Misako Kachi, Riko Oki, Toshio Iguchi, Yukari N. Takayabu:
A decadal variability of semi-global precipitation by TRMM PR. IGARSS 2015: 5127-5130 - [c18]Kinji Furukawa, Masahiro Kojima, Tomomi Nio, Toshiyuki Konishi, Riko Oki, Takeshi Masaki, Takuji Kubota
, Yuki Kaneko, Misako Kachi, Toshio Iguchi, Hiroshi Hanado, Katsuhiro Nakagawa:
The orbital operations status of the dual-frequency precipitation radar on the global precipitation measurement core spacecraft. IGARSS 2015: 5154-5157 - [c17]Takuji Kubota
, Takeshi Masaki, Toshio Iguchi, Shinji Urita, Naofumi Yoshida, Hiroshi Hanado, Riko Oki:
Development of a routine to reduce sidelobe clutter in GPM/KUPR-L2 algorithm. IGARSS 2015: 5166-5169 - 2014
- [c16]Misako Kachi, Takuji Kubota
, Kazumasa Aonashi, Tomoo Ushio
, Shoichi Shige, Munehisa Yamamoto
, Tomoaki Mega, Riko Oki:
Recent improvements in the global satellite mapping of precipitation (GSMaP). IGARSS 2014: 3762-3765 - [c15]Takeshi Masaki, Takuji Kubota
, Riko Oki, Masahiro Kojima, Kinji Furukawa, Takeshi Miura, Hiroki Kai, Toshio Iguchi, Hiroshi Hanado, Naofumi Yoshida, Tomohiko Higashiuwatoko:
Development of level 1 algorithm of Dual Frequency Precipitation Radar (DPR) for the Global Precipitation Measurement (GPM). IGARSS 2014: 4962-4965 - 2013
- [c14]Satoshi Kida, Takuji Kubota
, Misako Kachi, Riko Oki, Toshio Iguchi, Yukari N. Takayabu:
Reduction of discontinuity due to the orbit boost in TRMM Precipitation Radar product for climate studies. IGARSS 2013: 644-647 - [c13]Takuji Kubota
, Naofumi Yoshida, Shinji Urita, Toshio Iguchi, Shinta Seto, Jun Awaka, Hiroshi Hanado, Satoshi Kida, Riko Oki:
Development of synthetic GPM/DPR data from TRMM/PR and evaluation of GPM/DPR level-2 "at-launch" algorithms using them. IGARSS 2013: 648-651 - 2012
- [c12]Satoshi Kida, Takuji Kubota
, Misako Kachi, Shoichi Shige, Riko Oki:
Development of precipitation retrieval algorithm over land for a satellite-borne microwave sounder. IGARSS 2012: 342-345 - [c11]Takuji Kubota
, Masaki Satoh
, Tomoe Nasuno, Shinta Seto, Toshio Iguchi, Riko Oki:
Development of cloud liquid water database using global cloud-system resolving model for GPM/DPR algorithm. IGARSS 2012: 350-353 - 2011
- [c10]Nozomi Kawamoto, Riko Oki, Shuji Shimizu:
Comparison between TRMM/PR and AMeDAS ground rain gauge network in terms of annual rainfall. IGARSS 2011: 2590-2593 - [c9]Takuji Kubota
, Naofumi Yoshida, Shuji Shimizu, Riko Oki, Hiroshi Hanado, Toshio Iguchi:
Development of synthetic GPM/DPR data using KaPR sampling experiment of the TRMM/PR. IGARSS 2011: 3421-3424 - 2010
- [c8]Takuji Kubota
, Hisaki Eito, Kazumasa Aonashi, Akihiro Hashimoto, Toshio Iguchi, Hiroshi Hanado, Shuji Shimizu, Naofumi Yoshida, Riko Oki:
Development of spaceborne radar simulator by NICT and JAXA using JMA cloud-resolving model. IGARSS 2010: 1304-1307 - 2009
- [c7]Yasuhisa Iida, Takuji Kubota
, Toshio Iguchi, Riko Oki:
A Long-term Trend Observed in TRMM/PR Monthly Rainfall Products and an Evaluation of Sampling Error by a Bootstrap Method. IGARSS (1) 2009: 216-219 - 2008
- [c6]Shuji Shimizu, Toshio Iguchi, Riko Oki, Masafumi Hirose
, Tetsuya Tagawa:
Evaluation of the Effect of the Orbit Boost of the TRMM Satellite on the PR Rain Estimates. IGARSS (4) 2008: 133-136 - [c5]Tetsuya Tagawa, Shuji Shimizu, Riko Oki:
Derivation of sub-footprint scale /Spl sigma/0 observed by TRMM Precipitation Radar. IGARSS (4) 2008: 137-140 - 2007
- [c4]Tetsuya Tagawa, Shuji Shimizu, Riko Oki:
Modification of the beam mismatch correction algorithm. IGARSS 2007: 3920-3922 - 2006
- [c3]Shuji Shimizu, Riko Oki, Misako Kachi, Masahiro Kojima, Toshio Iguchi, Kenji Nakamura:
Development and Validation of Spaceborne Dualfrequency Precipitation Radar for GPM. IGARSS 2006: 29-31 - 2005
- [c2]Yasuhisa Iida, Ken'ichi Okamoto, Tomoo Ushio
, Riko Oki:
Sampling simulation for estimating the sampling error of space-time average rain rate for TRMM and GPM mission. IGARSS 2005: 4 - 2003
- [c1]Kenji Nakamura, Toshio Iguchi, Riko Oki:
Japan's progress for the global precipitation measurement (GPM). IGARSS 2003: 1695-1697
Coauthor Index
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