Ryo Oyama

3.3k total citations · 1 hit paper
14 papers, 1.6k citations indexed

About

Ryo Oyama is a scholar working on Atmospheric Science, Global and Planetary Change and Oceanography. According to data from OpenAlex, Ryo Oyama has authored 14 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Atmospheric Science, 12 papers in Global and Planetary Change and 4 papers in Oceanography. Recurrent topics in Ryo Oyama's work include Tropical and Extratropical Cyclones Research (11 papers), Climate variability and models (11 papers) and Meteorological Phenomena and Simulations (9 papers). Ryo Oyama is often cited by papers focused on Tropical and Extratropical Cyclones Research (11 papers), Climate variability and models (11 papers) and Meteorological Phenomena and Simulations (9 papers). Ryo Oyama collaborates with scholars based in Japan and United States. Ryo Oyama's co-authors include Junichi Tsutsui, Kiyotoshi Takahashi, Masami Sakamoto, Hiroaki Hatsushika, Hirotaka Kamahori, Koji Kato, Shinji Kadokura, Tomoaki Ose, Koji Wada and Kazutoshi Onogi and has published in prestigious journals such as Monthly Weather Review, Quarterly Journal of the Royal Meteorological Society and Journal of the European Ceramic Society.

In The Last Decade

Ryo Oyama

14 papers receiving 1.5k citations

Hit Papers

The JRA-25 Reanalysis 2007 2026 2013 2019 2007 400 800 1.2k
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.

  1. The JRA-25 Reanalysis
    2007 1.4k citations Kazutoshi Onogi, Junichi Tsutsui 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 Career Trend Papers Cites
Ryo Oyama Japan 8 1.4k 1.3k 442 81 62 14 1.6k
Hiroaki Hatsushika Japan 12 1.7k 1.2× 1.6k 1.2× 455 1.0× 92 1.1× 74 1.2× 18 1.9k
Carole Peubey United Kingdom 9 1.1k 0.8× 1.2k 0.9× 356 0.8× 68 0.8× 50 0.8× 12 1.4k
Caroline Müller France 22 2.0k 1.4× 2.1k 1.6× 398 0.9× 95 1.2× 84 1.4× 50 2.3k
Shinji Kadokura Japan 9 1.5k 1.1× 1.4k 1.1× 419 0.9× 108 1.3× 85 1.4× 19 1.7k
Nobuo Yamazaki Japan 10 1.6k 1.2× 1.6k 1.2× 499 1.1× 123 1.5× 90 1.5× 15 1.9k
Martin B. Andrews United Kingdom 19 1.2k 0.9× 1.3k 1.0× 382 0.9× 35 0.4× 40 0.6× 39 1.5k
Larissa E. Back United States 14 1.6k 1.2× 1.6k 1.2× 510 1.2× 37 0.5× 43 0.7× 20 1.8k
Ruth Comer United Kingdom 15 1.2k 0.9× 1.3k 1.0× 416 0.9× 48 0.6× 67 1.1× 21 1.4k
Jennifer L. Catto United Kingdom 25 1.9k 1.4× 1.9k 1.5× 285 0.6× 57 0.7× 98 1.6× 66 2.2k
Nobutaka MANNOJI Japan 6 1.3k 0.9× 1.3k 1.0× 509 1.2× 79 1.0× 53 0.9× 7 1.6k

Countries citing papers authored by Ryo Oyama

Since Specialization
Citations

This map shows the geographic impact of Ryo Oyama'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 Ryo Oyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryo Oyama more than expected).

Fields of papers citing papers by Ryo Oyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryo Oyama. 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 Ryo Oyama. The network helps show where Ryo Oyama may publish in the future.

Co-authorship network of co-authors of Ryo Oyama

This figure shows the co-authorship network connecting the top 25 collaborators of Ryo Oyama. A scholar is included among the top collaborators of Ryo Oyama 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 Ryo Oyama. Ryo Oyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

14 of 14 papers shown
1.
Cheng, Eric Jianfeng, Ryo Oyama, Takeshi Abe, & Kiyoshi Kanamura. (2022). High-voltage all-solid-state lithium metal batteries prepared by aerosol deposition. Journal of the European Ceramic Society. 43(5). 2033–2038. 10 indexed citations
2.
Yasunaga, Kazuaki, et al.. (2020). The Diurnal Cycle of Clouds in Tropical Cyclones over the Western North Pacific Basin. SOLA. 16(0). 109–114. 3 indexed citations
3.
Sawada, Masahiro, Zaizhong Ma, Avichal Mehra, et al.. (2020). Assimilation of Himawari-8 Rapid-Scan Atmospheric Motion Vectors on Tropical Cyclone in HWRF System. Atmosphere. 11(6). 601–601. 8 indexed citations
4.
Oyama, Ryo & Akiyoshi Wada. (2019). The Relationship between Convective Bursts and Warm-Core Intensification in a Nonhydrostatic Simulation of Typhoon Lionrock (2016). Monthly Weather Review. 147(5). 1557–1579. 13 indexed citations
5.
Sawada, Masahiro, Zaizhong Ma, Avichal Mehra, et al.. (2019). Impacts of Assimilating High-Resolution Atmospheric Motion Vectors Derived from Himawari-8 on Tropical Cyclone Forecast in HWRF. Monthly Weather Review. 147(10). 3721–3740. 23 indexed citations
6.
Wada, Akiyoshi & Ryo Oyama. (2018). Relation of Convective Bursts to Changes in the Intensity of Typhoon Lionrock (2016) during the Decay Phase Simulated by an Atmosphere-Wave-Ocean Coupled Model. Journal of the Meteorological Society of Japan Ser II. 96(6). 489–509. 7 indexed citations
7.
Oyama, Ryo, Masahiro Sawada, & Kazuki Shimoji. (2017). Diagnosis of Tropical Cyclone Intensity and Structure Using Upper Tropospheric Atmospheric Motion Vectors. Journal of the Meteorological Society of Japan Ser II. 96B(0). 3–26. 12 indexed citations
8.
Oyama, Ryo. (2017). Relationship between Tropical Cyclone Intensification and Cloud-Top Outflow Revealed by Upper-Tropospheric Atmospheric Motion Vectors. Journal of Applied Meteorology and Climatology. 56(10). 2801–2819. 15 indexed citations
9.
Oyama, Ryo, Akiyoshi Wada, & Masahiro Sawada. (2016). Intensification of Typhoon Danas (1324) Captured by MTSAT Upper Tropospheric Atmospheric Motion Vectors. SOLA. 12(0). 135–139. 7 indexed citations
10.
Oyama, Ryo, et al.. (2015). Summary and Characteristics of Approaching and Landfalling Tropical Cyclones in Japan in 2012 and 2013. 1 indexed citations
11.
Oyama, Ryo. (2014). Estimation of tropical cyclone central pressure from warm core intensity observed by the Advanced Microwave Sounding Unit-A (AMSU-A). Papers in Meteorology and Geophysics. 65(0). 35–56. 7 indexed citations
12.
Onogi, Kazutoshi, Junichi Tsutsui, Hiroshi Koide, et al.. (2007). The JRA-25 Reanalysis. Journal of the Meteorological Society of Japan Ser II. 85(3). 369–432. 1374 indexed citations breakdown →
13.
Onogi, Kazutoshi, Hiroshi Koide, Masami Sakamoto, et al.. (2005). JRA‐25: Japanese 25‐year re‐analysis project—progress and status. Quarterly Journal of the Royal Meteorological Society. 131(613). 3259–3268. 93 indexed citations
14.
Takeda, Takao & Ryo Oyama. (2003). Periodic Time Variation of a Low-TBB Cloud Area in Typhoon. Journal of the Meteorological Society of Japan Ser II. 81(6). 1497–1503. 6 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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