Riko Oki

7.2k total citations · 3 hit papers
89 papers, 4.3k citations indexed

About

Riko Oki is a scholar working on Atmospheric Science, Environmental Engineering and Global and Planetary Change. According to data from OpenAlex, Riko Oki has authored 89 papers receiving a total of 4.3k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Atmospheric Science, 41 papers in Environmental Engineering and 26 papers in Global and Planetary Change. Recurrent topics in Riko Oki's work include Precipitation Measurement and Analysis (74 papers), Meteorological Phenomena and Simulations (71 papers) and Soil Moisture and Remote Sensing (41 papers). Riko Oki is often cited by papers focused on Precipitation Measurement and Analysis (74 papers), Meteorological Phenomena and Simulations (71 papers) and Soil Moisture and Remote Sensing (41 papers). Riko Oki collaborates with scholars based in Japan, United States and France. Riko Oki's co-authors include Toshio Iguchi, Christian D. Kummerow, Ramesh K. Kakar, Kenji Nakamura, Masahiro Kojima, Steven P. Neeck, Ardeshir A. Azarbarzin, Arthur Y. Hou, Takuji Kubota and Misako Kachi and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Scientific Reports and Geophysical Research Letters.

In The Last Decade

Riko Oki

83 papers receiving 4.2k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The Global Precipitation Measurement Mission

2013 2.1k citations Riko Oki, Kenji Nakamura et al. profile →
The Global Precipitation Measurement (GPM) Mission for Science and Society

2016 584 citations Toshio Iguchi, R. Meneghini et al. profile →
A Kalman Filter Approach to the Global Satellite Mapping of Precipitation (GSMaP) from Combined Passive Microwave and Infrared Radiometric Data

2009 491 citations Tomoo Ushio, Takuji Kubota et al. Journal of the Meteorological Society of Japan Ser II profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Riko Oki Japan	20	3.9k	2.4k	1.1k	387	287	89	4.3k
Kenji Nakamura Japan	27	4.2k 1.1×	2.7k 1.1×	1.2k 1.0×	319 0.8×	297 1.0×	111	4.5k
Gail Skofronick‐Jackson United States	22	2.6k 0.7×	1.5k 0.6×	673 0.6×	227 0.6×	169 0.6×	61	2.9k
Robert Cifelli United States	32	3.0k 0.8×	2.2k 0.9×	648 0.6×	187 0.5×	327 1.1×	94	3.4k
F. Joseph Turk United States	27	3.0k 0.8×	2.2k 0.9×	724 0.6×	287 0.7×	340 1.2×	95	3.4k
Shoichi Shige Japan	25	3.0k 0.8×	2.2k 0.9×	583 0.5×	261 0.7×	293 1.0×	71	3.2k
William S. Olson United States	37	4.7k 1.2×	3.1k 1.3×	1.1k 0.9×	133 0.3×	408 1.4×	85	4.9k
Kazumasa Aonashi Japan	20	2.2k 0.5×	1.4k 0.6×	504 0.4×	235 0.6×	209 0.7×	57	2.3k
Stanley B. Trier United States	34	3.3k 0.8×	3.1k 1.3×	495 0.4×	124 0.3×	245 0.9×	62	3.6k
Norman C. Grody United States	32	3.4k 0.9×	1.8k 0.7×	1.1k 1.0×	100 0.3×	315 1.1×	66	3.8k
Thomas Haiden United Kingdom	22	1.2k 0.3×	1.2k 0.5×	324 0.3×	313 0.8×	156 0.5×	60	1.7k

Countries citing papers authored by Riko Oki

Since Specialization

Citations

This map shows the geographic impact of Riko Oki's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Riko Oki with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Riko Oki more than expected).

Fields of papers citing papers by Riko Oki

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Riko Oki. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Riko Oki. The network helps show where Riko Oki may publish in the future.

Co-authorship network of co-authors of Riko Oki

This figure shows the co-authorship network connecting the top 25 collaborators of Riko Oki. A scholar is included among the top collaborators of Riko Oki based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Riko Oki. Riko Oki is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Masaki, Takeshi, Toshio Iguchi, Kinji Furukawa, et al.. (2020). Calibration of the Dual-Frequency Precipitation Radar Onboard the Global Precipitation Measurement Core Observatory. IEEE Transactions on Geoscience and Remote Sensing. 60. 1–16. 42 indexed citations

Yamaji, Moeka, Hiroshi G. Takahashi, Takuji Kubota, et al.. (2020). 4-year Climatology of Global Drop Size Distribution and its Seasonal Variability Observed by Spaceborne Dual-frequency Precipitation Radar. Journal of the Meteorological Society of Japan Ser II. 98(4). 755–773. 24 indexed citations

Okazaki, Atsushi, Takumi Honda, Shunji Kotsuki, et al.. (2019). Simulating precipitation radar observations from a geostationary satellite. Atmospheric measurement techniques. 12(7). 3985–3996. 3 indexed citations

Kubota, Takuji, Guosheng Liu, Tomoko Tashima, & Riko Oki. (2018). Development of snowfall estimation method in Global Satellite Mapping of Precipitation (GSMaP) product. Japan Geoscience Union. 1 indexed citations

Ishii, Shoken, Philippe Baron, Makoto Aoki, et al.. (2017). Feasibility Study for Future Space-Borne Coherent Doppler Wind Lidar, Part 1: Instrumental Overview for Global Wind Profile Observation. Journal of the Meteorological Society of Japan Ser II. 95(5). 301–317. 16 indexed citations

Baron, Philippe, Shoken Ishii, Kozo Okamoto, et al.. (2017). Feasibility Study for Future Spaceborne Coherent Doppler Wind Lidar, Part 2: Measurement Simulation Algorithms and Retrieval Error Characterization. Journal of the Meteorological Society of Japan Ser II. 95(5). 319–342. 10 indexed citations

Iguchi, Toshio, Shinta Seto, Jun Awaka, et al.. (2016). Performance of the Dual-frequency Precipitation Radar on the GPM core satellite. EGUGA. 1 indexed citations

Kachi, Misako, Kazumasa Aonashi, Takuji Kubota, et al.. (2016). Developments and applications of the Global Satellite Mapping of Precipitation (GSMaP) for the Global Precipitation Measurement (GPM). EGUGA. 1 indexed citations

Ishii, Shoken, Kozo Okamoto, Philippe Baron, et al.. (2016). Measurement Performance Assessment of Future Space-Borne Doppler Wind Lidar for Numerical Weather Prediction. SOLA. 12(0). 55–59. 8 indexed citations

10.

Kaneko, Yuki, Katsuhiro Nakagawa, Kenji Suzuki, Riko Oki, & Kenji Nakamura. (2015). Ground Validation Activity for GPM/DPR Retrieval Algorithm and Products. Japan Geoscience Union. 1 indexed citations

11.

Takayabu, Yukari N., Atsushi Hamada, Riko Oki, et al.. (2014). Impacts of Light Precipitation Detection with Dual Frequency Radar on Global Precipitation Measurement Core Observatory (GPM/DPR). AGU Fall Meeting Abstracts. 2014. 1 indexed citations

12.

Oki, Riko, Takuji Kubota, Misako Kachi, et al.. (2011). CLOUD AND PRECIPITATION OBSERVATION BY SPACEBORNE RADAR IN JAPAN: THE CURRENT AND FUTURE MISSIONS. 한국기상학회 학술대회 논문집. 6–6. 1 indexed citations

13.

Katagiri, Shuichiro, Riko Oki, Takashi Y. Nakajima, et al.. (2010). EarthCARE science mission objectives. 38. 63–68. 2 indexed citations

14.

Shimizu, Shuji, et al.. (2009). Evaluation of the Effects of the Orbit Boost of the TRMM Satellite on PR Rain Estimates. Journal of the Meteorological Society of Japan Ser II. 87A. 83–92. 35 indexed citations

15.

Ushio, Tomoo, Takuji Kubota, Shoichi Shige, et al.. (2009). A Kalman Filter Approach to the Global Satellite Mapping of Precipitation (GSMaP) from Combined Passive Microwave and Infrared Radiometric Data. Journal of the Meteorological Society of Japan Ser II. 87A. 137–151. 491 indexed citations breakdown →

16.

Hirose, Masafumi, Riko Oki, David Short, & Kenji Nakamura. (2009). Regional Characteristics of Scale-based Precipitation Systems from Ten Years of TRMM PR Data. Journal of the Meteorological Society of Japan Ser II. 87A. 353–368. 19 indexed citations

17.

Satoh, Shinsuke, Riko Oki, Nobuhiro Takahashi, & T. Iguchi. (2003). Development of spaceborne dual-frequency precipitation radar and its role for the global precipitation measurement. EGS - AGU - EUG Joint Assembly. 8166. 1 indexed citations

18.

Prabhakara, C., R. Iacovazzi, Riko Oki, & J. A. Weinman. (1999). A Microwave Radiometer Rain Retrieval Method Applicable to Land Areas. Journal of the Meteorological Society of Japan Ser II. 77(4). 859–871. 3 indexed citations

19.

Oki, Riko, Kazuaki Furukawa, Shuji Shimizu, et al.. (1998). Preliminary results of TRMM: Part 1, a comparison of PR with ground observations. Marine Technology Society Journal. 32(4). 13–23. 7 indexed citations

20.

Prabhakara, C., R. Meneghini, David Short, et al.. (1998). A TRMM Microwave Radiometer Rain Retrieval Method Based on Fractional Rain Area. Journal of the Meteorological Society of Japan Ser II. 76(5). 765–781. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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