A. E. Niell

6.1k citations

93 papers · 3.9k · 2 hit papers · h-index 20

Impact in

Oceanography top 0.2%
- Geophysics and Gravity Measurements
Astronomy and Astrophysics top 1%
- Ionosphere and magnetosphere dynamics
- Radio Astronomy Observations and Technology

Papers in

Astronomy and Astrophysics 63
- Radio Astronomy Observations and Technology 34
- Ionosphere and magnetosphere dynamics 20
- Gamma-ray bursts and supernovae 6
Aerospace Engineering 57
- GNSS positioning and interference 51

Co-authors: Harald Schuh (5 shared papers)J. Boehm (4 shared papers)Paul Tregoning (1 shared paper)J. L. Davis (5 shared papers)A. J. Coster (4 shared papers)Carolyn A. Upham (2 shared papers)V. B. Mendes (3 shared papers)Fredrick Solheim (3 shared papers)
Journals: The Astrophysical Journal (12 papers)The Astronomical Journal (8 papers)Journal of Geophysical Research Atmospheres (3 papers)Information Visualization (2 papers)Radio Science (2 papers)
Partner nations: United States Canada Australia

In The Last Decade

A. E. Niell

81 papers receiving 3.5k citations

A. E. Niell's Hit Papers

align trajectories log scale

Global Mapping Function (GMF): A new empirical mapping function based on numerical weather model data 2006 · 1.3k citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2006 Geophysical Research Letters
1996 Journal of Geophysical Research Atmospheres

Peers

Countries citing papers authored by A. E. Niell

Since Specialization

Citations

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

Fields of papers citing papers by A. E. Niell

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside A. E. Niell, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with A. E. Niell Line = papers co-authored together A. E. Niell links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 93 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Global Mapping Function (GMF): A new empirical mapping function based on numerical weather model data Geophysical Research Letters ·J. Boehm, A. E. Niell, Paul Tregoning, Harald Schuh Hit paper breakdown →	2006	1279
2	Global mapping functions for the atmosphere delay at radio wavelengths Journal of Geophysical Research Atmospheres ·A. E. Niell Hit paper breakdown →	1996	1184
3	Comparison of Measurements of Atmospheric Wet Delay by Radiosonde, Water Vapor Radiometer, GPS, and VLBI Journal of Atmospheric and Oceanic Technology ·A. E. Niell, A. J. Coster, Fredrick Solheim, V. B. Mendes, P. C. Toor, Richard B. Langley, Carolyn A. Upham	2001	252
4	Geodesy using the Global Positioning System: The effects of signal scattering on estimates of site position Journal of Geophysical Research Atmospheres ·P. Elósegui, J. L. Davis, R. T. Kenneth Jaldehag, Jan M. Johansson, A. E. Niell, I. I. Shapiro	1995	175
5	Ground‐based measurement of gradients in the “wet” radio refractivity of air Radio Science ·J. L. Davis, Gunnar Elgered, A. E. Niell, C. E. Kuehn	1993	150
6	Preliminary evaluation of atmospheric mapping functions based on numerical weather models Physics and Chemistry of the Earth Part A Solid Earth and Geodesy ·A. E. Niell	2001	83
7	Improved atmospheric mapping functions for VLBI and GPS Earth Planets and Space ·A. E. Niell	2014	53
8	Design Aspects of the VLBI2010 System Chalmers Publication Library (Chalmers University of Technology) ·Bill Petrachenko, A. E. Niell, Dirk Behrend, B. E. Corey, Johannes Böhm, P. Charlot, A. Collioud, John Gipson, Rüdiger Haas, Thomas Hobiger, Yasuhiro Koyama, D. S. MacMillan, Zinovy Malkin, Tobias Nilsson, A. Pany, G. Tuccari, A. R. Whitney, J. Wresnik	2009	52
9	Submilliarcsecond astrometry via VLBI. I - Relative position of the radio sources 3C 345 and NRAO 512 The Astronomical Journal ·I. I. Shapiro, J. J. Wittels, III Counselman C. C., D. S. Robertson, A. R. Whitney, H. F. Hinteregger, C. A. Knight, T. A. Clark, L. K. Hutton, A. E. Niell	1979	43
10	Phase-referenced VLBI observations of weak radio sources - Milliarcsecond position of Algol The Astronomical Journal ·J.-F. Lestrade, A. E. E. Rogers, A. R. Whitney, A. E. Niell, R. B. Phillips, R. A. Preston	1990	42
11	Transcontinental Baselines and the Rotation of the Earth Measured by Radio Interferometry Science ·I. I. Shapiro, D. S. Robertson, C. A. Knight, C. C. Counselman, A. E. E. Rogers, H. F. Hinteregger, S. L. Lippincott, A. R. Whitney, T. A. Clark, A. E. Niell, D. J. Spitzmesser	1974	38
12	VLBI2010: Next Generation VLBI System for Geodesy and Astrometry International Association of Geodesy symposia ·W. T. Petrachenko, A. E. Niell, B. E. Corey, Dirk Behrend, Harald Schuh, J. Wresnik	2011	36
13	Geodesy using the Swedish permanent GPS network: Effects of signal scattering on estimates of relative site positions Journal of Geophysical Research Atmospheres ·R. T. Kenneth Jaldehag, Jan M. Johansson, B. O. Rönnäng, P. Elósegui, J. L. Davis, I. I. Shapiro, A. E. Niell	1996	33
14	Development of an antenna and multipath calibration system for Global Positioning System sites Radio Science ·Kwan‐Dong Park, P. Elósegui, J. L. Davis, Per Jarlemark, B. E. Corey, A. E. Niell, J. Normandeau, Charles Meertens, V. Andreatta	2004	30
15	Design Aspects of the VLBI2010 System - Progress Report of the IVS VLBI2010 Committee NASA Technical Reports Server (NASA) ·Bill Petrachenko, A. E. Niell, Dirk Behrend, B. E. Corey, J. Boehm, Patrick Chralot, A. Collioud, John Gipson, Ruediger Haas, Thomas Hobiger, Yasuhiro Koyama, Dan MacMillan, Zinvoy Malkin, Tobias Nilsson, A. Pany, G. Tuccari, A. R. Whitney, Joerg Wresnik	2009	27
16	Measurements of Precipitable Water Vapor by GPS, Radiosondes, and a Microwave Water Vapor Radiometer A. J. Coster, A. E. Niell, Fredrick Solheim, V. B. Mendes, P. C. Toor, K. P. Buchmann, Carolyn A. Upham	1996	25
17	Comparison of a radio interferometric differential baseline measurement with conventional geodesy Tectonophysics ·A. E. Niell, K. M. Ong, P. F. Macdoran, G. M. Resch, D. D. Morabito, E. S. Claflin, Joseph F. Dracup	1979	24
18	VLBI observations of 416 extragalactic radio sources The Astronomical Journal ·D. D. Morabito, A. E. Niell, R. A. Preston, R. P. Linfield, A. E. Wehrle, J. S. Faulkner	1986	22
19	Observations of compact radio nuclei in Cygnus A, Centaurus A, and other extended radio sources The Astrophysical Journal ·K. I. Kellermann, B. G. Clark, A. E. Niell, D. B. Shaffer	1975	21
20	Very high-resolution observations of the radio sources NRAO 150, OJ 287, 3C 273, M87, 1633 + 38, BL Lacertae, and 3C 454.3 The Astrophysical Journal ·K. I. Kellermann, D. B. Shaffer, G. H. Purcell, I. I. K. Pauliny‐Toth, E. Preuß, A. Witzel, D. A. Graham, R. T. Schilizzi, M. H. Cohen, A. E. Niell	1977	20

About A. E. Niell

A. E. Niell is a scholar working on Astronomy and Astrophysics, Aerospace Engineering, Oceanography, Computational Mechanics and Nuclear and High Energy Physics, having authored 93 papers that have together received 3.9k indexed citations. Recurring topics across this work include GNSS positioning and interference (51 papers), Geophysics and Gravity Measurements (43 papers), Radio Astronomy Observations and Technology (34 papers), Astronomical Observations and Instrumentation (29 papers), Ionosphere and magnetosphere dynamics (20 papers), Astrophysics and Cosmic Phenomena (17 papers), Astronomy and Astrophysical Research (10 papers) and Gamma-ray bursts and supernovae (6 papers). The work is most often cited by research in Oceanography (2.8k citations), Astronomy and Astrophysics (2.4k citations), Aerospace Engineering (3.3k citations), Geophysics (351 citations) and Atomic and Molecular Physics, and Optics (428 citations). A. E. Niell has collaborated with scholars based in United States, Canada and Australia. Frequent co-authors include Harald Schuh, J. Boehm, Paul Tregoning, J. L. Davis, A. J. Coster, Carolyn A. Upham, V. B. Mendes, Fredrick Solheim, P. Elósegui and Gunnar Elgered. Their work appears in journals such as The Astrophysical Journal, The Astronomical Journal, Journal of Geophysical Research Atmospheres, Information Visualization and Radio Science.

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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