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Topic · Environmental Engineering

Maritime Transport Emissions and Efficiency

Maritime Transport Emissions and Efficiency is a research topic within Environmental Engineering. Science Explorer counts 15k research works in it since 1950. 15.9% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the environmental impact of maritime transportation emissions, including the assessment of emissions from ships, the effects on air quality and climate change, fuel consumption optimization, and the exploration of alternative fuels and propulsion systems. It also addresses the challenges and potential solutions for reducing emissions in port areas and along shipping routes.

  • Emissions
  • Maritime Transportation
  • Environmental Impact
  • Shipping
  • Fuel Consumption
  • Air Quality
  • Climate Change
  • Ship Propulsion
  • Emission Control Areas
  • Alternative Fuels
Research works
15k
fractional, since 1950
In the world top 10%
2.4k
per year above
Top-10% rate
15.9%
share of its works in the world top 10%
Growth, 2013–17 → 2018–22
+79%
the tick is no change

Which countries lead Maritime Transport Emissions and Efficiency research?

By volume, China and the United States publish the most (1.3k and 279 works in 2022–2025).

By volume, 2022–2025

  1. 1 China 1.3k works
  2. 2 United States 279 works
  3. 3 Italy 221 works
  4. 4 Türkiye 196 works
  5. 5 Indonesia 195 works
  6. 6 United Kingdom 192 works
  7. 7 South Korea 147 works
  8. 8 Germany 136 works
  9. 9 Norway 120 works
  10. 10 Spain 115 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 45.7%United States: 9.5%Italy: 7.5%Türkiye: 6.6%6 others listed: 30.7%46%largest
China1,347 · 45.7%United States279 · 9.5%Italy221 · 7.5%Türkiye196 · 6.6%6 others listed904 · 30.7%

Shares of the rows listed above, not of the whole node.

Which institutions lead Maritime Transport Emissions and Efficiency research?

By volume in 2022–2025, Shanghai Maritime University publishes the most Maritime Transport Emissions and Efficiency research, followed by Dalian Maritime University and Wuhan University of Technology.

By volume, 2022–2025

  1. 1 Shanghai Maritime UniversityChina 139 works
  2. 2 Dalian Maritime UniversityChina 132 works
  3. 3 Wuhan University of TechnologyChina 100 works
  4. 4 Shanghai Jiao Tong UniversityChina 50 works
  5. 5 Norwegian University of Science and TechnologyNorway 49 works
  6. 6 Harbin Engineering UniversityChina 46 works
  7. 7 Delft University of TechnologyNetherlands 40 works
  8. 8 University of GenoaItaly 39 works
  9. 9 Sepuluh Nopember Institute of TechnologyIndonesia 38 works
  10. 10 Odessa National Maritime UniversityUkraine 36 works

Who are the leading researchers in Maritime Transport Emissions and Efficiency?

The most-cited researchers publishing on Maritime Transport Emissions and Efficiency include Lídia Morawska, İbrahim Dinçer and Josep M. Guerrero.

  1. 1 Lídia Morawska Australia 6.4k citations
  2. 2 İbrahim Dinçer Canada 5.9k citations
  3. 3 Josep M. Guerrero Denmark 5.6k citations
  4. 4 C. Guedes Soares Portugal 2.7k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

Where is Maritime Transport Emissions and Efficiency research done?

The largest centres of Maritime Transport Emissions and Efficiency research in 2022–2025 are Shanghai (China), Beijing (China), Wuhan (China) and Dalian (China). Among places with at least 20 works in it, it is an unusually large share of all research in Gdynia, Malmo and Galati.

Largest cities, 2022–2025

  1. 1 Shanghai China 282 works
  2. 2 Beijing China 178 works
  3. 3 Wuhan China 171 works
  4. 4 Dalian China 162 works
  5. 5 Istanbul Türkiye 76 works
  6. 6 Trondheim Norway 72 works
  7. 7 Harbin China 61 works
  8. 8 Surabaya Indonesia 56 works
  9. 9 Busan South Korea 54 works
  10. 10 Singapore Singapore 53 works

Where it is the local speciality

  1. GdyniaPL · 21.2 works82×
  2. MalmoSE · 22.5 works48×
  3. GalatiRO · 21.7 works36×
  4. VarnaBG · 24.4 works34×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Maritime Transport Emissions and Efficiency than the world average.

See Maritime Transport Emissions and Efficiency on the map

Where is the best place to study Maritime Transport Emissions and Efficiency?

Among universities, judged by research, World Maritime University, University of Strathclyde and Hong Kong Polytechnic University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%60%mean 31.6%fractional works in this node (log) →share in the world top 10% →World Maritime University: 22, 44.8%University of Strathclyde: 34, 32.3%Hong Kong Polytechnic University: 35, 34.9%Nanyang Technological University: 22, 50.6%Australian Maritime College: 9, 38.2%Wuhan University of Technology: 100, 20.8%Dalian Maritime University: 132, 30.5%Delft University of Technology: 40, 18.5%Chalmers University of Technology: 18, 26.2%Norwegian University of Science and Technology: 49, 19.2%Nanyang Technologica…World Maritime Unive…Hong Kong Polytechni…University of Strath…
above the meannear itbelow it

One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.

#UniversityScoreTop 10%SpecialisationWorksGrowth
1 World Maritime UniversitySweden 75.344.8%355.1×22 +165.0%
2 University of StrathclydeUnited Kingdom 75.232.3%27.8×34 +318.2%
3 Hong Kong Polytechnic UniversityHong Kong 71.134.9%8.6×35 +98.7%
4 Nanyang Technological UniversitySingapore 71.150.6%5.8×22 +151.2%
5 Australian Maritime CollegeAustralia 69.938.2%318.0×9 +310.9%
6 Wuhan University of TechnologyChina 68.620.8%26.6×100 +148.9%
7 Dalian Maritime UniversityChina 67.430.5%77.3×132 +6.9%
8 Delft University of TechnologyNetherlands 66.018.5%12.7×40 +163.1%
9 Chalmers University of TechnologySweden 64.626.2%15.0×18 +146.0%
10 Norwegian University of Science and TechnologyNorway 64.219.2%19.2×49 +97.8%

Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.

Is Maritime Transport Emissions and Efficiency research growing?

Output in 2018–2022 was 79% higher than in 2013–2017, peaking in 2025. The fastest-growing topics are Maritime Transport Emissions and Efficiency.

19801990200020102020
grewheldshrank

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

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.