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Company · Lanham · United States

Science Systems and Applications (United States)

In research, Science Systems and Applications (United States) stands highest in Physical Sciences (#2,240 of 10,670 worldwide) and Earth and Planetary Sciences (#499 of 1,088 worldwide), 2022-now. Relative to its size it is most specialised in Atmospheric Science, Astronomy and Astrophysics and Global and Planetary Change (Atmospheric Science is 55.0× its share of world research).

ssaihq.comROR OpenAlex
World rank, 2022-now
#8,786
of 22,385 · #2,238 all time
Rank in United States
#1,183
of 3,332
Research works
2.1k
▼ 52% vs 2018-21
Citations
82k
39.2 per fractional work
Top-10% rate
8.9%
all institutions 10.0%
vs its own fields
1.10×
1.00× is exactly expected
Open access
40%
world 40%
International
14%
world 18%
Science Systems and Applications (United States)

What is Science Systems and Applications (United States) known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #2,240 of 10,670 8.9%200 #1117
Earth and Planetary SciencesField #499 of 1,088 9.5%63 #326

Each strip is that field's whole ranked pool, with the notch where Science Systems and Applications (United States) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Science Systems and Applications (United States) work in?

In 2022-now, 95% of research at Science Systems and Applications (United States) is in Physical Sciences, 3% in Social Sciences. Its largest fields are Earth and Planetary Sciences (29%), Environmental Science (26%), Engineering (18%). It does 2.4× the world's share of Physical Sciences.

Physical Sciences: 221 fractional works · 94.8% of its workEarth and Planetary Sciences: 68 fractional works · 29.4% of its workAtmospheric Science: 57 fractional works · 24.3% of its workOceanography: 10 fractional works · 4.5% of its workEarth-Surface Processes: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workEnvironmental Science: 61 fractional works · 26.4% of its workGlobal and Planetary Change: 40 fractional works · 17.3% of its workEnvironmental Engineering: 8 fractional works · 3.6% of its workEcology: 4 fractional works · 1.8% of its workWater Science and Technology: 3 fractional works · 1.1% of its workIndustrial and Manufacturing Engineering: 2 fractional works · 0.8% of its workHealth, Toxicology and Mutagenesis: 2 fractional works · 0.7% of its workEnvironmental Chemistry: 1 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.6% of its workEngineering: 41 fractional works · 17.6% of its workAerospace Engineering: 29 fractional works · 12.6% of its workElectrical and Electronic Engineering: 3 fractional works · 1.2% of its workComputational Mechanics: 2 fractional works · 0.9% of its workOcean Engineering: 2 fractional works · 0.8% of its workMedia Technology: 1 fractional works · 0.6% of its workBiomedical Engineering: 1 fractional works · 0.5% of its workCivil and Structural Engineering: 1 fractional works · 0.3% of its workMechanics of Materials: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.5% of its workPhysics and Astronomy: 40 fractional works · 17.2% of its workAstronomy and Astrophysics: 28 fractional works · 12.2% of its workNuclear and High Energy Physics: 5 fractional works · 2.1% of its workAtomic and Molecular Physics, and Optics: 4 fractional works · 1.7% of its workInstrumentation: 1 fractional works · 0.5% of its workStatistical and Nonlinear Physics: 1 fractional works · 0.3% of its workRadiation: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workComputer Science: 6 fractional works · 2.8% of its workArtificial Intelligence: 3 fractional works · 1.2% of its workInformation Systems: 2 fractional works · 0.7% of its workComputer Networks and Communications: 1 fractional works · 0.4% of its workComputer Vision and Pattern Recognition: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workMathematics: 2 fractional works · 0.8% of its workApplied Mathematics: 2 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemistry: 1 fractional works · 0.3% of its workSpectroscopy: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workMaterials Science: 0 fractional works · 0.2% of its workChemical Engineering: 0 fractional works · 0.0% of its workEnergy: 0 fractional works · 0.0% of its workSocial Sciences: 7 fractional works · 3.0% of its workDecision Sciences: 3 fractional works · 1.1% of its workInformation Systems and Management: 1 fractional works · 0.6% of its workStatistics, Probability and Uncertainty: 1 fractional works · 0.3% of its workManagement Science and Operations Research: 1 fractional works · 0.3% of its workBusiness, Management and Accounting: 1 fractional works · 0.5% of its workManagement Information Systems: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 1 fractional works · 0.4% of its workSocial Psychology: 1 fractional works · 0.4% of its workSocial Sciences: 1 fractional works · 0.4% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.4% of its workEconomics and Econometrics: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workArts and Humanities: 0 fractional works · 0.2% of its workLife Sciences: 3 fractional works · 1.3% of its workAgricultural and Biological Sciences: 2 fractional works · 0.7% of its workPlant Science: 1 fractional works · 0.3% of its workEcology, Evolution, Behavior and Systematics: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 1 fractional works · 0.5% of its workMolecular Biology: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workImmunology and Microbiology: 0 fractional works · 0.1% of its workNeuroscience: 0 fractional works · 0.0% of its workHealth Sciences: 2 fractional works · 0.9% of its workMedicine: 2 fractional works · 0.7% of its workPulmonary and Respiratory Medicine: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workHealth Professions: 0 fractional works · 0.1% of its workVeterinary: 0 fractional works · 0.0% of its workDentistry: 0 fractional works · 0.0% of its workALL ITS WORKScience Systemsand Applications…233fractional works, 2022-now
Life Sciences1%Physical Sciences95%Health Sciences1%Social Sciences3%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 24 fields, with their numbers
    1. Earth and Planetary Sciences6829.4%
    2. Environmental Science6126.4%
    3. Engineering4117.6%
    4. Physics and Astronomy4017.2%
    5. Computer Science62.8%
    6. Mathematics20.8%
    7. Chemistry10.3%
    8. Materials Science00.2%
    9. Chemical Engineering00.0%
    10. Energy00.0%
    1. Decision Sciences31.1%
    2. Business, Management and Accounting10.5%
    3. Psychology10.4%
    4. Social Sciences10.4%
    5. Economics, Econometrics and Finance10.4%
    6. Arts and Humanities00.2%
    1. Agricultural and Biological Sciences20.7%
    2. Biochemistry, Genetics and Molecular Biology10.5%
    3. Immunology and Microbiology00.1%
    4. Neuroscience00.0%
    1. Medicine20.7%
    2. Health Professions00.1%
    3. Veterinary00.0%
    4. Dentistry00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Science Systems and Applications (United States) specialise in?

Where its research is concentrated relative to its size: Atmospheric Science takes 55.0× the share of its output that it takes of world research.

  1. Atmospheric ScienceSubfield · 56.6 works55×
  2. Astronomy and AstrophysicsSubfield · 28.4 works23×
  3. Global and Planetary ChangeSubfield · 40.4 works23×
  4. Earth and Planetary SciencesField · 68.5 works19×
  5. Aerospace EngineeringSubfield · 29.4 works11×
  6. Physics and AstronomyField · 40.1 works7.8×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.15× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.09× its world share, 1 worksBiochemistry, Geneti…Immunology and Microbiology: 0.08× its world share, 0 worksImmunology and Micro…Neuroscience: 0.02× its world share, 0 worksNeuroscienceChemical Engineering: 0.11× its world share, 0 worksChemical EngineeringChemistry: 0.20× its world share, 1 worksChemistryComputer Science: 0.36× its world share, 6 worksComputer ScienceEarth and Planetary Sciences: 18.76× its world share, 68 worksEarth and Planetary …Energy: 0.03× its world share, 0 worksEnergyEngineering: 1.17× its world share, 41 worksEngineeringEnvironmental Science: 5.31× its world share, 61 worksEnvironmental ScienceMaterials Science: 0.06× its world share, 0 worksMaterials ScienceMathematics: 0.69× its world share, 2 worksMathematicsPhysics and Astronomy: 7.75× its world share, 40 worksPhysics and AstronomyDentistry: 0.07× its world share, 0 worksDentistryHealth Professions: 0.05× its world share, 0 worksHealth ProfessionsMedicine: 0.04× its world share, 2 worksMedicineVeterinary: 0.35× its world share, 0 worksVeterinaryArts and Humanities: 0.06× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 0.15× its world share, 1 worksBusiness, Management…Decision Sciences: 1.18× its world share, 3 worksDecision SciencesEconomics, Econometrics and Finance: 0.17× its world share, 1 worksEconomics, Econometr…Psychology: 0.14× its world share, 1 worksPsychologySocial Sciences: 0.03× its world share, 1 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 18.8×. Every wedge is a field page.

All 24 fields, with their numbers
  1. Earth and Planetary Sciences18.76×68 works
  2. Physics and Astronomy7.75×40 works
  3. Environmental Science5.31×61 works
  4. Decision Sciences1.18×3 works
  5. Engineering1.17×41 works
  6. Mathematics0.69×2 works
  7. Computer Science0.36×6 works
  8. Veterinary0.35×0 works
  9. Chemistry0.20×1 works
  10. Economics, Econometrics and Finance0.17×1 works
  11. Agricultural and Biological Sciences0.15×2 works
  12. Business, Management and Accounting0.15×1 works
  13. Psychology0.14×1 works
  14. Chemical Engineering0.11×0 works
  15. Biochemistry, Genetics and Molecular Biology0.09×1 works
  16. Immunology and Microbiology0.08×0 works
  17. Dentistry0.07×0 works
  18. Materials Science0.06×0 works
  19. Arts and Humanities0.06×0 works
  20. Health Professions0.05×0 works
  21. Medicine0.04×2 works
  22. Energy0.03×0 works
  23. Social Sciences0.03×1 works
  24. Neuroscience0.02×0 works

Who are the top researchers at Science Systems and Applications (United States)?

Ranked on the quality score, Zachary Fasnacht, Joseph G. Corbett and Liang Huang lead among researchers whose main affiliation is Science Systems and Applications (United States).

  1. 1 Zachary Fasnacht United States · #1,495,511 worldwide 538 citations · 58 works
  2. 2 Joseph G. Corbett United States · #1,527,593 worldwide 1.5k citations · 23 works
  3. 3 Liang Huang United States · #1,572,555 worldwide 1k citations · 59 works
  4. 4 Matthew Todd DeLand United States · #1,579,914 worldwide 5.2k citations · 261 works
  5. 5 Vinay Kayetha United States · #1,718,896 worldwide 671 citations · 38 works
  6. 6 Rajesh Poudyal United States · #1,762,286 worldwide 300 citations · 18 works
  7. 7 Lusheng Liang United States · #1,847,455 worldwide 1.9k citations · 38 works
  8. 8 Joseph Nigro United States · #1,896,157 worldwide 675 citations · 34 works
  9. 9 Alfred B. Hubbard United States · #2,402,962 worldwide 286 citations · 23 works
  10. 10 Yonghong Li United States · #2,559,652 worldwide 1.4k citations · 106 works
All ranked researchers at Science Systems and Applications (United States)

What are the most cited papers from Science Systems and Applications (United States)?

The most cited paper from Science Systems and Applications (United States) is "First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters" (David N. Spergel, Licia Verde, Hiranya V. Peiris et al., 2003), with 11,089 citations. Next come "The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)" (9,616) and "AERONET—A Federated Instrument Network and Data Archive for Aerosol Characterization" (8,604).

Most cited papers
#PaperReleasedCitations
1 First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters David N. Spergel, Licia Verde, Hiranya V. Peiris et al. · The Astrophysical Journal Supplement Series Open access 19 Aug 2003 11,089
2 The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) Ronald Gelaro et al. · Journal of Climate Open access May 2017 9,616
3 AERONET—A Federated Instrument Network and Data Archive for Aerosol Characterization BRENT N. HOLBEN, T. F. Eck, I. Slutsker et al. · Remote Sensing of Environment Open access Oct 1998 8,604
4 The TRMM Multisatellite Precipitation Analysis (TMPA): Quasi-Global, Multiyear, Combined-Sensor Precipitation Estimates at Fine Scales George J. Huffman, David T. Bolvin, Eric J. Nelkin et al. · Journal of Hydrometeorology Feb 2007 6,998
5 Three‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Implications for Cosmology David N. Spergel et al. · The Astrophysical Journal Supplement Series Open access 31 May 2007 6,681
All 61 most cited papers, with filters and sorting

Which keywords describe research at Science Systems and Applications (United States)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Remote Sensing, Satellite Observations, Air Quality, Climate Change, Ozone Depletion, Stratospheric Water Vapor, Hydrological Cycle and On-Orbit Performance.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Remote Sensing39▲ 14×25 topics
  2. Climate Change32▲ 5.1×45 topics
  3. Satellite Observations32▲ 138×3 topics
  4. Air Quality31▲ 71×6 topics
  5. Ozone Depletion25▲ 356×1 topic
  6. Stratospheric Water Vapor25▲ 356×1 topic
  7. Hydrological Cycle21▲ 90×2 topics
  8. On-Orbit Performance21▲ 826×1 topic
  9. Radiometric Calibration21▲ 826×1 topic
  10. Climate20▲ 88×2 topics
  11. Aerosols17▲ 104×1 topic
  12. Atmospheric Dust17▲ 269×1 topic
  13. Water Quality15▲ 16×6 topics
  14. Atmospheric Aerosols14▲ 103×1 topic
  15. Black Carbon14▲ 103×1 topic
  16. Emissions13▲ 29×4 topics
  17. Shale Gas13▲ 46×2 topics
  18. Atmospheric13▲ 116×1 topic
  19. Methane13▲ 116×1 topic
  20. Global Warming12▲ 12×9 topics
  21. Hydrological Modeling11▲ 20×5 topics
  22. Data Assimilation11▲ 29×4 topics
  23. Quantum Gravity8▲ 41×3 topics
  24. Ocean Circulation8▲ 24×3 topics
  25. Boundary Layer7▲ 25×2 topics
  26. Ensemble Kalman Filter7▲ 31×2 topics
  27. Convective Parameterization7▲ 54×1 topic
  28. Mesoscale Modeling7▲ 54×1 topic
  29. Supernovae7▲ 36×2 topics
  30. Cosmological Parameters7▲ 52×1 topic
  31. Dark Energy7▲ 44×1 topic
  32. Sea Level Rise6▲ 21×3 topics
  33. Black Holes6▲ 27×3 topics
  34. Eutrophication6▲ 23×2 topics
  35. Harmful Algal Blooms6▲ 32×3 topics
  36. Dissolved Organic Matter6▲ 52×1 topic
  37. Oceanic Carbon Cycle6▲ 52×1 topic
  38. Sparse Representation6▲ 13×2 topics
  39. Validation5▲ 26×2 topics
  40. Forecasting5▲ 12×4 topics

Which research topics does Science Systems and Applications (United States) publish most on?

By volume in 2022-now: Atmospheric Ozone and Climate, Calibration and Measurement Techniques, Atmospheric aerosols and clouds and Atmospheric chemistry and aerosols.

Atmospheric Ozone and Cl…25Atmospheric Ozone and Climate: 25 fractional worksCalibration and Measurement Techniques: 21 fractional worksAtmospheric aerosols and clouds: 17 fractional worksAtmospheric chemistry and aerosols: 14 fractional worksAtmospheric and Environmental Gas Dynamics: 13 fractional worksMeteorological Phenomena…7Meteorological Phenomena and Simulations: 7 fractional worksCosmology and Gravitation Theories: 7 fractional worksMarine and coastal ecosystems: 6 fractional worksInfrared Target Detection Methodologies: 5 fractional worksClimate variability and models: 4 fractional works
Atmospheric ScienceAerospace EngineeringGlobal and Planetary ChangeAstronomy and Astrophysics1 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Atmospheric Ozone and Climate Atmospheric Science 25 works
  2. 2 Calibration and Measurement Techniques Aerospace Engineering 21 works
  3. 3 Atmospheric aerosols and clouds Global and Planetary Change 17 works
  4. 4 Atmospheric chemistry and aerosols Atmospheric Science 14 works
  5. 5 Atmospheric and Environmental Gas Dynamics Global and Planetary Change 13 works
  6. 6 Meteorological Phenomena and Simulations Atmospheric Science 7 works
  7. 7 Cosmology and Gravitation Theories Astronomy and Astrophysics 7 works
  8. 8 Marine and coastal ecosystems Oceanography 6 works
  9. 9 Infrared Target Detection Methodologies Aerospace Engineering 5 works
  10. 10 Climate variability and models Global and Planetary Change 4 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available39.6%not open60.4%

World: 40% of research is openly available.

with international co-authors14.4%domestic only85.6%

World: 18% is written across borders.

How has Science Systems and Applications (United States)'s research output changed?

Output in 2022-2025 was 52% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Science Systems and Applications (United States) as a percentage of every work published that year, 0.00068% in 2024.

still counting0.0020%0.0040%0.0060%Science Systems and Applications (United States)0.00099% in 202519801990200020102020

Fractional works of Science Systems and Applications (United States) over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting10%20%all institutions10.0% in 2025Science Systems and Applications (United States)3.9% in 202520102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 18.0% in 2001.

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