A. Keens

426 total citations
9 papers, 189 citations indexed

About

A. Keens is a scholar working on Spectroscopy, Atmospheric Science and Global and Planetary Change. According to data from OpenAlex, A. Keens has authored 9 papers receiving a total of 189 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Spectroscopy, 4 papers in Atmospheric Science and 4 papers in Global and Planetary Change. Recurrent topics in A. Keens's work include Spectroscopy and Laser Applications (5 papers), Atmospheric Ozone and Climate (4 papers) and Atmospheric and Environmental Gas Dynamics (3 papers). A. Keens is often cited by papers focused on Spectroscopy and Laser Applications (5 papers), Atmospheric Ozone and Climate (4 papers) and Atmospheric and Environmental Gas Dynamics (3 papers). A. Keens collaborates with scholars based in Germany. A. Keens's co-authors include Frank Hase, Thomas Blumenstock, S. Dohe, M. Gisi, Aude Simon, Matthias Frey, H. Happ, J. Orphal, Roland Harig and Matthäus Kiel and has published in prestigious journals such as Journal of Molecular Structure, Atmospheric measurement techniques and Vibrational Spectroscopy.

In The Last Decade

A. Keens

9 papers receiving 184 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
A. Keens Germany	6	151	149	58	12	10	9	189
R. Snel Netherlands	5	161 1.1×	173 1.2×	34 0.6×	14 1.2×	11 1.1×	10	218
Nicholas D. C. Allen United Kingdom	11	230 1.5×	148 1.0×	170 2.9×	18 1.5×	22 2.2×	18	313
Eva Hammann Germany	7	155 1.0×	170 1.1×	27 0.5×	5 0.4×	7 0.7×	7	219
B.D. Zak United States	9	194 1.3×	173 1.2×	18 0.3×	27 2.3×	11 1.1×	23	283
C. Midwinter Canada	9	320 2.1×	252 1.7×	67 1.2×	16 1.3×	3 0.3×	17	344
Sebastian Ehrhart Germany	8	238 1.6×	110 0.7×	45 0.8×	17 1.4×	2 0.2×	14	283
Denis Dufour Canada	7	80 0.5×	71 0.5×	27 0.5×	7 0.6×	32 3.2×	22	134
M. Viterbini Italy	8	288 1.9×	241 1.6×	15 0.3×	12 1.0×	6 0.6×	19	322
Toshihide Hikida Japan	10	302 2.0×	82 0.6×	69 1.2×	27 2.3×	18 1.8×	16	365
M. Gisi Germany	8	269 1.8×	258 1.7×	172 3.0×	14 1.2×	27 2.7×	13	318

Countries citing papers authored by A. Keens

Since Specialization

Citations

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

Fields of papers citing papers by A. Keens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. Keens

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

All Works

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9 of 9 papers shown

1.

Hase, Frank, Matthias Frey, Matthäus Kiel, et al.. (2016). Addition of a channel for XCO observations to a portable FTIR spectrometer for greenhouse gas measurements. Atmospheric measurement techniques. 9(5). 2303–2313. 41 indexed citations

2.

Gisi, M., Frank Hase, S. Dohe, et al.. (2012). XCO ₂ -measurements with a tabletop FTS using solar absorption spectroscopy. Atmospheric measurement techniques. 5(11). 2969–2980. 107 indexed citations

3.

Harig, Roland, et al.. (2010). Hyperspectral sensor for analysis of gases in the atmosphere (HYGAS). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7695. 76950B–76950B. 3 indexed citations

4.

Keens, A.. (2004). A tribute to the Winnewissers or how science meets technology. Journal of Molecular Structure. 695-696. 379–384. 5 indexed citations

5.

Keens, A.. (2003). New methods of data processing in FTS equipment. FWC2–FWC2. 1 indexed citations

6.

Metz, William D., et al.. (2002). Data acquisition and interferogram data treatment in FT-IR spectrometers. Vibrational Spectroscopy. 29(1-2). 97–101. 1 indexed citations

7.

Notholt, Justus, et al.. (1997). Solar absorption measurements of stratospheric OH in the UV with a Fourier-transform spectrometer. Applied Optics. 36(24). 6076–6076. 11 indexed citations

8.

Keens, A., et al.. (1994). Correction of the nonlinear response of infrared detectors. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 2089. 222–222. 8 indexed citations

9.

Keens, A. & H. Happ. (1988). A study of the ferroelectric phase transition in PbHPO₄by optical second-harmonic generation. Journal of Physics C Solid State Physics. 21(8). 1661–1671. 12 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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