J. A. Ryan

1.7k total citations
33 papers, 1.3k citations indexed

About

J. A. Ryan is a scholar working on Astronomy and Astrophysics, Aerospace Engineering and Earth-Surface Processes. According to data from OpenAlex, J. A. Ryan has authored 33 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Astronomy and Astrophysics, 11 papers in Aerospace Engineering and 6 papers in Earth-Surface Processes. Recurrent topics in J. A. Ryan's work include Planetary Science and Exploration (23 papers), Astro and Planetary Science (16 papers) and Space Exploration and Technology (10 papers). J. A. Ryan is often cited by papers focused on Planetary Science and Exploration (23 papers), Astro and Planetary Science (16 papers) and Space Exploration and Technology (10 papers). J. A. Ryan collaborates with scholars based in United States. J. A. Ryan's co-authors include R. M. Henry, S. Heß, J. E. Tillman, John J. Carroll, Conway Β. Leovy, Robert Sharman, C. B. Leovy, Chris J. Walcek, J. L. Mitchell and Harold L. Cole and has published in prestigious journals such as Science, Journal of Geophysical Research Atmospheres and Geophysical Research Letters.

In The Last Decade

J. A. Ryan

32 papers receiving 1.1k citations

Peers

Countries citing papers authored by J. A. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by J. A. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. A. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of J. A. Ryan. A scholar is included among the top collaborators of J. A. Ryan 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 J. A. Ryan. J. A. Ryan 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

#	Work	Indexed citations
1	Mars atmospheric circulation: Aspects from Viking Landers 1985 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan	5
2	Mars water vapor, near‐surface 1982 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan, Robert Sharman, (unknown)	23
3	Local Mars dust storm generation mechanism 1981 ·Geophysical Research Letters ·J. A. Ryan, Robert Sharman, (unknown)	26
4	Two major dust storms, one Mars year apart: Comparison from Viking data 1981 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan, Robert Sharman	36
5	The annual cycle of pressure on Mars measured by Viking Landers 1 and 2 1980 ·Geophysical Research Letters ·S. Heß, J. A. Ryan, J. E. Tillman, R. M. Henry, C. B. Leovy	145
6	Mars Atmosphere Pressure Periodicities from Viking Observations 1980 ·Journal of the Atmospheric Sciences ·Robert Sharman, J. A. Ryan	18
7	Mars atmospheric phenomena during major dust storms, as measured at surface 1979 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan, R. M. Henry	106
8	Discrete events at Viking‐2 Mars site, northern summer 1978 ·Geophysical Research Letters ·(unknown), Bruce J. Nicholson, J. A. Ryan	1
9	Early Meteorological Results from the Viking 2 Lander 1976 ·Science ·S. Heß, R. M. Henry, Conway Β. Leovy, J. L. Mitchell, J. A. Ryan, J. E. Tillman	26
10	Mars Climatology from Viking 1 After 20 Sols 1976 ·Science ·S. Heß, R. M. Henry, Conway Β. Leovy, J. A. Ryan, J. E. Tillman, (unknown), Harold L. Cole, (unknown), G. C. Greene, (unknown), J. L. Mitchell	42
11	Meteorology experiments: the viking mars lander 1972 ·Icarus ·Seymour L. Hess, Robert Henry, Joachim P. Kuettner, Conway Β. Leovy, J. A. Ryan	16
12	Microchemical, microphysical, and adhesive properties of lunar material. II 1971 ·Lunar and Planetary Science Conference Proceedings ·(unknown), J. A. Ryan, (unknown), (unknown)	2
13	Micro-chemical, microphysical and adhesive properties of lunar material 1970 ·Geochimica et Cosmochimica Acta Supplement ·(unknown), J. A. Ryan, (unknown), (unknown)	18
14	Comments on Lunar Surface Adhesion 1970 ·NASA Special Publication ·J. A. Ryan, (unknown)	2
15	Dust devil wind velocities: Mature state 1970 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan, John J. Carroll	91
16	Study of dust devils as related to the Martian yellow clouds, volume 1 Final report, 1 Jun. 1967 - 5 Dec. 1968 1969 ·NASA STI Repository (National Aeronautics and Space Administration) ·J. A. Ryan	2
17	Adhesion of silicates cleaved in ultrahigh vacuum 1968 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan, (unknown), (unknown)	10
18	Adhesional behavior of air and ultrahigh vacuum formed silicate surfaces in relation to the moon. 1967 ·NASA Technical Reports Server (NASA) ·M. B. Baker, J. A. Ryan	2
19	Notes on the Martian yellow clouds 1964 ·Journal of Geophysical Research Atmospheres ·J. A. Ryan	62
20	A method of closure of the abdominal wall defect in exstrophy of the bladder 1956 ·The American Journal of Surgery ·(unknown), J. A. Ryan, (unknown)	1

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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