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Funder · Tokyo · Japan

National Institute of Polar Research

In research, National Institute of Polar Research stands highest in Physical Sciences (#4,523 of 12,888 worldwide), 2022–2025. Relative to its size it is most specialised in Atmospheric Science, Astronomy and Astrophysics and Earth and Planetary Sciences — Atmospheric Science is 55.4× its share of world research.

nipr.ac.jpROR OpenAlex
World rank, 2022–2025
#7,573
of 28,054 · #5,618 all time
Rank in Japan
#192
of 1,070
Research works
1.7k
▼ 29% vs 2013–17
Citations
30k
16.9 per fractional work
Top-10% rate
15.8%
record average 16.5%
Open access
62%
world 28%

What is National Institute of Polar Research known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #4,523 of 12,888 15.9%115 #3460

Each strip is that field’s whole ranked pool, with the notch where National Institute of Polar Research 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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does National Institute of Polar Research specialise in?

Where its research is concentrated relative to its size: Atmospheric Science takes 55.4× the share of its output that it takes of world research.

  1. Atmospheric ScienceSubfield · 31.0 works55×
  2. Astronomy and AstrophysicsSubfield · 23.7 works36×
  3. Earth and Planetary SciencesField · 51.8 works26×
← 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: 0.39× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.73× its world share, 5 worksBiochemistry, Geneti…Chemistry: 0.15× its world share, 0 worksChemistryComputer Science: 0.12× its world share, 1 worksComputer ScienceEarth and Planetary Sciences: 26.05× its world share, 52 worksEarth and Planetary …Energy: 0.43× its world share, 0 worksEnergyEngineering: 0.32× its world share, 6 worksEngineeringEnvironmental Science: 4.44× its world share, 28 worksEnvironmental ScienceMaterials Science: 0.24× its world share, 1 worksMaterials ScienceMathematics: 0.34× its world share, 0 worksMathematicsPhysics and Astronomy: 8.94× its world share, 25 worksPhysics and AstronomyHealth Professions: 0.05× its world share, 0 worksHealth ProfessionsMedicine: 0.07× its world share, 2 worksMedicineNursing: 0.03× its world share, 0 worksNursingVeterinary: 0.16× its world share, 0 worksVeterinaryArts and Humanities: 0.03× its world share, 0 worksArts and HumanitiesDecision Sciences: 0.09× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.02× its world share, 0 worksEconomics, Econometr…Psychology: 0.01× its world share, 0 worksPsychologySocial Sciences: 0.17× its world share, 3 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 26.1×. Every wedge is a field page.

Who are the top researchers at National Institute of Polar Research?

Ranked on the composite score, Kazuyuki Shiraishi, Yoichi Motoyoshi and Masaki Ejiri lead among researchers whose main affiliation is National Institute of Polar Research.

  1. 1 Kazuyuki Shiraishi Japan · #173,462 worldwide 190 citations · 43 works
  2. 2 Yoichi Motoyoshi Japan · #244,099 worldwide 186 citations · 43 works
  3. 3 Masaki Ejiri Japan · #281,490 worldwide 75 citations · 38 works
  4. 4 Yasuhiko Naito Japan · #576,687 worldwide 131 citations · 31 works
  5. 5 Shuji Fujita Japan · #586,491 worldwide 208 citations · 65 works
  6. 6 Natsuo Sato Japan · #609,615 worldwide 53 citations · 47 works
  7. 7 Tomokazu Hokada Japan · #630,578 worldwide 145 citations · 43 works
  8. 8 Kenji Horie Japan · #651,639 worldwide 142 citations · 50 works
  9. 9 Yuka Sato Japan · #666,920 worldwide 20 citations · 18 works
  10. 10 H. Yamagishi Japan · #679,804 worldwide 65 citations · 25 works
All ranked researchers at National Institute of Polar Research

Which keywords describe research at National Institute of Polar Research?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Climate Change, Remote Sensing, Solar Wind, Arctic, Hydrology, Ocean Circulation, Ionosphere and Magnetosphere.

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

Size is fractional works in 2022–2025 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. Climate Change40▲ 12×38 topics
  2. Remote Sensing16▲ 11×12 topics
  3. Solar Wind14▲ 117×2 topics
  4. Arctic10▲ 71×4 topics
  5. Hydrology10▲ 60×3 topics
  6. Ocean Circulation9▲ 55×3 topics
  7. Ionosphere8▲ 119×1 topic
  8. Magnetosphere8▲ 119×1 topic
  9. Sea Level Rise8▲ 49×3 topics
  10. Glacier7▲ 119×1 topic
  11. Holocene7▲ 45×3 topics
  12. Water Availability7▲ 119×1 topic
  13. Paleoclimatology6▲ 62×2 topics
  14. Sea Level6▲ 53×2 topics
  15. Glacial Cycles6▲ 76×1 topic
  16. Monsoon Dynamics6▲ 76×1 topic
  17. Decline6▲ 180×1 topic
  18. Sea Ice6▲ 180×1 topic
  19. Plate Tectonics6▲ 30×3 topics
  20. Air Quality6▲ 24×4 topics
  21. Solar System Abundances6▲ 91×1 topic
  22. Terrestrial Planets6▲ 91×1 topic
  23. Permafrost6▲ 101×2 topics
  24. Coronal Mass Ejections5▲ 114×1 topic
  25. Solar Dynamics Observatory5▲ 114×1 topic
  26. Satellite Observations5▲ 41×2 topics
  27. Biogeography5▲ 14×6 topics
  28. Ozone Depletion4▲ 117×1 topic
  29. Stratospheric Water Vapor4▲ 117×1 topic
  30. Global Warming4▲ 7.8×4 topics
  31. Tectonics4▲ 26×3 topics
  32. Thermodynamic Modeling4▲ 26×2 topics
  33. Geochronology4▲ 42×1 topic
  34. Zircon4▲ 42×1 topic
  35. Hydrological Cycle4▲ 30×2 topics
  36. Mars4▲ 87×1 topic
  37. Martian Surface4▲ 87×1 topic
  38. Atmospheric Aerosols3▲ 48×1 topic
  39. Black Carbon3▲ 48×1 topic
  40. Population Dynamics3▲ 11×6 topics

Which research topics does National Institute of Polar Research publish most on?

By volume in 2022–2025: Ionosphere and magnetosphere dynamics, Cryospheric studies and observations, Geology and Paleoclimatology Research and Arctic and Antarctic ice dynamics.

Ionosphere and magnetosp…8Ionosphere and magnetosphere dynamics: 8 fractional worksCryospheric studies and …7Cryospheric studies and observations: 7 fractional worksGeology and Paleoclimato…6Geology and Paleoclimatology Research: 6 fractional worksArctic and Antarctic ice…6Arctic and Antarctic ice dynamics: 6 fractional worksAstro and Planetary Science: 6 fractional worksSolar and Space Plasma Dynamics: 5 fractional worksAtmospheric Ozone and Cl…4Atmospheric Ozone and Climate: 4 fractional worksGeological and Geochemical Analysis: 4 fractional worksPlanetary Science and Exploration: 4 fractional worksAtmospheric chemistry and aerosols: 3 fractional works
Astronomy and AstrophysicsAtmospheric ScienceGeophysics

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

  1. 1 Ionosphere and magnetosphere dynamics Astronomy and Astrophysics 8 works
  2. 2 Cryospheric studies and observations Atmospheric Science 7 works
  3. 3 Geology and Paleoclimatology Research Atmospheric Science 6 works
  4. 4 Arctic and Antarctic ice dynamics Atmospheric Science 6 works
  5. 5 Astro and Planetary Science Astronomy and Astrophysics 6 works
  6. 6 Solar and Space Plasma Dynamics Astronomy and Astrophysics 5 works
  7. 7 Atmospheric Ozone and Climate Atmospheric Science 4 works
  8. 8 Geological and Geochemical Analysis Geophysics 4 works
  9. 9 Planetary Science and Exploration Astronomy and Astrophysics 4 works
  10. 10 Atmospheric chemistry and aerosols Atmospheric Science 3 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 available62.2%not open37.8%

World: 28% of research is openly available.

with international co-authors28.5%domestic only71.5%

World: 19% is written across borders.

How has National Institute of Polar Research's research output changed?

Output in 2018–2022 was 29% lower than in 2013–2017.

1990200020102020
grewheldshrank

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

Other research institutions in Tokyo

All research institutions in Tokyo

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.