Ryan J. Longman

1.4k total citations · 1 hit paper
30 papers, 996 citations indexed

About

Ryan J. Longman is a scholar working on Atmospheric Science, Global and Planetary Change and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Ryan J. Longman has authored 30 papers receiving a total of 996 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Atmospheric Science, 18 papers in Global and Planetary Change and 4 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Ryan J. Longman's work include Climate variability and models (14 papers), Meteorological Phenomena and Simulations (8 papers) and Tropical and Extratropical Cyclones Research (6 papers). Ryan J. Longman is often cited by papers focused on Climate variability and models (14 papers), Meteorological Phenomena and Simulations (8 papers) and Tropical and Extratropical Cyclones Research (6 papers). Ryan J. Longman collaborates with scholars based in United States, Singapore and Canada. Ryan J. Longman's co-authors include Thomas W. Giambelluca, Abby G. Frazier, Lauren R. Kaiser, Yuko O. Stender, Rachel Dacks, Iria Fernández-Silva, James M. Anderson, Christine M. Ambrosino, Camilo Mora and Andrew J. Newman and has published in prestigious journals such as Nature, Journal of Geophysical Research Atmospheres and Journal of Climate.

In The Last Decade

Ryan J. Longman

30 papers receiving 968 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 projected timing of climate departure from recent variability

2013 506 citations Camilo Mora, Abby G. Frazier et al. Nature profile →

Peers

Ryan J. Longman

GPC

ECOLO

NLC

EEBS

Nima Madani United States

Roger Sayre United States

Andrew James Hartley United Kingdom

Janice Bathols Australia

Lijuan Miao China

Kun Tian China

Zhenshan Lin China

A. Smith Australia

Mélanie Kolb Mexico

Claire Lunch United States

Nima Madani United States

Ryan J. Longman

682 ×1.3

GPC

279 ×0.8

361 ×2.0

ECOLO

147 ×1.0

NLC

98 ×0.7

EEBS

Citations per year, relative to Ryan J. Longman Ryan J. Longman (= 1×) peers Nima Madani

Countries citing papers authored by Ryan J. Longman

Since Specialization

Citations

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

Fields of papers citing papers by Ryan J. Longman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

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

Longman, Ryan J., et al.. (2024). The Hawai‘i Climate Data Portal (HCDP). Bulletin of the American Meteorological Society. 105(7). E1074–E1083. 10 indexed citations

Luo, Xiao, Abby G. Frazier, Henry F. Díaz, Ryan J. Longman, & Thomas W. Giambelluca. (2024). Routine Climate Monitoring in the State of Hawai‘i: Establishment of State Climate Divisions. Bulletin of the American Meteorological Society. 105(6). E1045–E1061. 3 indexed citations

Kourkchi, Ehsan, Ryan J. Longman, Matthew P. Lucas, et al.. (2024). Mapping Daily Air Temperature Over the Hawaiian Islands From 1990 to 2021 via an Optimized Piecewise Linear Regression Technique. Earth and Space Science. 11(1). 7 indexed citations

Kantar, Michael B., et al.. (2023). Genome-wide association study for carcass weight in pasture-finished beef cattle in Hawai’i. Frontiers in Genetics. 14. 1168150–1168150. 18 indexed citations

Longman, Ryan J., et al.. (2022). Climate change impacts shifting landscape of the dairy industry in Hawai‘i. Translational Animal Science. 6(2). txac064–txac064. 7 indexed citations

Longman, Ryan J., et al.. (2022). The Pacific Drought Knowledge Exchange: A Co-Production Approach to Deliver Climate Resources to User Groups. Sustainability. 14(17). 10554–10554. 6 indexed citations

Lucas, Matthew P., Ryan J. Longman, Thomas W. Giambelluca, et al.. (2022). Optimizing Automated Kriging to Improve Spatial Interpolation of Monthly Rainfall over Complex Terrain. Journal of Hydrometeorology. 23(4). 561–572. 28 indexed citations

Frazier, Abby G., Christian P. Giardina, Thomas W. Giambelluca, et al.. (2022). A Century of Drought in Hawaiʻi: Geospatial Analysis and Synthesis across Hydrological, Ecological, and Socioeconomic Scales. Sustainability. 14(19). 12023–12023. 10 indexed citations

Longman, Ryan J., O. Elison Timm, Thomas W. Giambelluca, & Lauren R. Kaiser. (2021). A 20-year analysis of disturbance-driven rainfall on O’ahu, Hawai’i. Monthly Weather Review. 19 indexed citations

10.

Longman, Ryan J., et al.. (2021). Climate Adaptation for Tropical Island Land Stewardship: Adapting a Workshop Planning Process to Hawai‘i. Bulletin of the American Meteorological Society. 103(2). E402–E409. 4 indexed citations

11.

Lucas, Matthew P., et al.. (2021). Building a portal for climate data—Mapping automation, visualization, and dissemination. Concurrency and Computation Practice and Experience. 35(18). 11 indexed citations

12.

Nugent, Alison D., Ryan J. Longman, Clay Trauernicht, et al.. (2020). Fire and Rain: The Legacy of Hurricane Lane in Hawaiʻi. Bulletin of the American Meteorological Society. 101(6). E954–E967. 18 indexed citations

13.

Lucas, Matthew P., et al.. (2020). The Hawai‘i Rainfall Analysis and Mapping Application (HI-RAMA): Decision Support and Data Visualization for Statewide Rainfall Data. Practice and Experience in Advanced Research Computing. 239–245. 5 indexed citations

14.

Newman, Andrew J., Martyn Clark, Ryan J. Longman, et al.. (2019). Use of Daily Station Observations to Produce High-Resolution Gridded Probabilistic Precipitation and Temperature Time Series for the Hawaiian Islands. Journal of Hydrometeorology. 20(3). 509–529. 25 indexed citations

15.

Longman, Ryan J., Thomas W. Giambelluca, Michael A. Nullet, et al.. (2018). Compilation of climate data from heterogeneous networks across the Hawaiian Islands. Scientific Data. 5(1). 180012–180012. 38 indexed citations

16.

Gotsch, Sybil G., Shelley D. Crausbay, Thomas W. Giambelluca, et al.. (2014). Water relations and microclimate around the upper limit of a cloud forest in Maui, Hawai'i. Tree Physiology. 34(7). 766–777. 19 indexed citations

17.

Crausbay, Shelley D., Abby G. Frazier, Thomas W. Giambelluca, Ryan J. Longman, & Sara C. Hotchkiss. (2014). Moisture status during a strong El Niño explains a tropical montane cloud forest’s upper limit. Oecologia. 175(1). 273–284. 30 indexed citations

18.

Mora, Camilo, Abby G. Frazier, Ryan J. Longman, et al.. (2013). The projected timing of climate departure from recent variability. Nature. 502(7470). 183–187. 506 indexed citations breakdown →

19.

Longman, Ryan J., Thomas W. Giambelluca, & Michael A. Nullet. (2013). Use of a clear-day solar radiation model to homogenize solar radiation measurements in Hawai‘i. Solar Energy. 91. 102–110. 9 indexed citations

20.

Longman, Ryan J., Thomas W. Giambelluca, & Abby G. Frazier. (2011). Modeling clear‐sky solar radiation across a range of elevations in Hawai‘i: Comparing the use of input parameters at different temporal resolutions. Journal of Geophysical Research Atmospheres. 117(D2). 9 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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