Keiji Imaoka

1.8k total citations
53 papers, 1.4k citations indexed

About

Keiji Imaoka is a scholar working on Atmospheric Science, Environmental Engineering and Oceanography. According to data from OpenAlex, Keiji Imaoka has authored 53 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Atmospheric Science, 28 papers in Environmental Engineering and 17 papers in Oceanography. Recurrent topics in Keiji Imaoka's work include Precipitation Measurement and Analysis (29 papers), Soil Moisture and Remote Sensing (26 papers) and Meteorological Phenomena and Simulations (20 papers). Keiji Imaoka is often cited by papers focused on Precipitation Measurement and Analysis (29 papers), Soil Moisture and Remote Sensing (26 papers) and Meteorological Phenomena and Simulations (20 papers). Keiji Imaoka collaborates with scholars based in Japan, United States and Sri Lanka. Keiji Imaoka's co-authors include Akira Shibata, Roy W. Spencer, Misako Kachi, Hideyuki Fujii, Takashi Maeda, T. Takeshima, Toneo Kawanishi, Toshihiro Sezai, Toshio Koike and Yoshinari Ishido and has published in prestigious journals such as Proceedings of the IEEE, Journal of Climate and IEEE Transactions on Geoscience and Remote Sensing.

In The Last Decade

Keiji Imaoka

52 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keiji Imaoka Japan 16 1.2k 722 378 183 122 53 1.4k
Peter Steinle Australia 14 629 0.5× 395 0.5× 386 1.0× 90 0.5× 75 0.6× 43 849
Ziad S. Haddad United States 20 1.3k 1.1× 535 0.7× 607 1.6× 149 0.8× 161 1.3× 104 1.5k
R. S. Dunbar United States 17 1.1k 0.9× 744 1.0× 170 0.4× 643 3.5× 141 1.2× 61 1.5k
Kimmo Rautiainen Finland 22 1.2k 1.0× 1.2k 1.6× 87 0.2× 84 0.5× 227 1.9× 72 1.4k
M. Klein United States 16 712 0.6× 433 0.6× 175 0.5× 45 0.2× 141 1.2× 44 840
J. R. Wang United States 14 1.3k 1.1× 1.1k 1.5× 383 1.0× 47 0.3× 180 1.5× 28 1.5k
Matthew S. Mason Australia 14 443 0.4× 349 0.5× 226 0.6× 158 0.9× 106 0.9× 45 713
P.W. Gaiser United States 16 864 0.7× 546 0.8× 200 0.5× 596 3.3× 194 1.6× 48 1.2k
Roland Hohensinn Switzerland 8 656 0.6× 774 1.1× 169 0.4× 85 0.5× 137 1.1× 18 1.0k
Toneo Kawanishi Japan 7 785 0.7× 414 0.6× 270 0.7× 127 0.7× 85 0.7× 20 887

Countries citing papers authored by Keiji Imaoka

Since Specialization
Citations

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

Fields of papers citing papers by Keiji Imaoka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiji Imaoka

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

All Works

20 of 20 papers shown
1.
As-syakur, Abd. Rahman, Keiji Imaoka, Manabu D. Yamanaka, et al.. (2019). Analysis of Spatial and Seasonal Differences in the Diurnal Rainfall Cycle over Sumatera Revealed by 17-Year TRMM 3B42 Dataset. SOLA. 15(0). 216–221. 12 indexed citations
2.
Imaoka, Keiji, et al.. (2016). Characteristics of AMSR-E slow rotation data. 883–885. 2 indexed citations
3.
Imaoka, Keiji, et al.. (2015). Space-time clustering characteristics of dengue based on ecological, socio-economic and demographic factors in northern Sri Lanka. Geospatial health. 10(2). 376–376. 16 indexed citations
4.
Kachi, Misako, Akira Shibata, Hiroshi Murakami, & Keiji Imaoka. (2014). Japanese GHRSST activities and the AMSR2 SST Validations. EGU General Assembly Conference Abstracts. 13862. 1 indexed citations
5.
Imaoka, Keiji, et al.. (2014). Characterization of the Temporal and Spatial Dynamics of the Dengue Epidemic in Northern Sri Lanka. ˜The œinternational archives of the photogrammetry, remote sensing and spatial information sciences. XL-8. 163–166. 2 indexed citations
6.
Imaoka, Keiji, et al.. (2014). Present status of the global change observation mission 1st - water 'SHIZUKU' (GCOM-W1) and the advanced microwave scanning radiometer 2 (AMSR2). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 9264. 92640E–92640E. 4 indexed citations
7.
8.
Kajiwara, Koji, Ram C. Sharma, Akiko Ono, et al.. (2012). Land validation for GCOM-C1/SGLI using UAV. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8533. 853308–853308. 2 indexed citations
9.
Imaoka, Keiji & Kenji Nakamura. (2012). Statistical Analysis of the Life Cycle of Isolated Tropical Cold Cloud Systems Using MTSAT-1R and TRMM Data. Monthly Weather Review. 140(11). 3552–3572. 16 indexed citations
10.
Imaoka, Keiji, Misako Kachi, Hideyuki Fujii, et al.. (2012). Status of AMSR2 on GCOM-W1. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 10 indexed citations
11.
Imaoka, Keiji, et al.. (2012). Status of AMSR2 instrument on GCOM-W1. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8528. 852815–852815. 80 indexed citations
12.
Imaoka, Keiji, Misako Kachi, Hideyuki Fujii, et al.. (2010). Global Change Observation Mission (GCOM) for Monitoring Carbon, Water Cycles, and Climate Change. Proceedings of the IEEE. 98(5). 717–734. 207 indexed citations
13.
Oki, Taikan, Keiji Imaoka, & Misako Kachi. (2010). AMSR instruments on GCOM-W1/2: Concepts and applications. 1363–1366. 24 indexed citations
14.
Fujii, Hideyuki, Toshio Koike, & Keiji Imaoka. (2009). Improvement of the AMSR-E Algorithm for Soil Moisture Estimation by Introducing a Fractional Vegetation Coverage Dataset Derived from MODIS Data. National Remote Sensing Bulletin. 29(1). 282–292. 91 indexed citations
15.
Imaoka, Keiji, et al.. (2005). Multi-year analysis of AMSR-E brightness temperature over homogeneous regions. 5. 3450–3453. 1 indexed citations
16.
Imaoka, Keiji, et al.. (2005). Investigation of radio frequency interference over Japan using AMSR and AMSR-E data. 5. 3454–3455. 1 indexed citations
17.
IGARASHI, Tamotsu, Akira Shibata, Keiji Imaoka, et al.. (2004). Status of level-2 products of ADEOS-II validation plan. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5234. 64–64. 1 indexed citations
18.
Imaoka, Keiji & Roy W. Spencer. (2000). Diurnal Variation of Precipitation over the Tropical Oceans Observed by TRMM/TMI Combined with SSM/I. Journal of Climate. 13(23). 4149–4158. 54 indexed citations
19.
Shibata, Akira, Keiji Imaoka, Misako Kachi, & Hiroshi Murakami. (1999). SST observation by TRMM Microwave Imager aboard Tropical Rainfall Measuring Mission.. Oceanography in Japan. 8(2). 135–139. 21 indexed citations
20.
Shibata, Akira, Keiji Imaoka, Misako Kachi, & Hiroshi Murakami. (1998). Perspective of Researches using TRMM Microwave Imager. National Remote Sensing Bulletin. 18(5). 460–469. 1 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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