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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. 10.0% 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%
1.5k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+60%
the tick is no change
Largest producer
China
48% of the 10 largest, 2022-now
Maritime Transport Emissions and Efficiency

Which countries lead Maritime Transport Emissions and Efficiency research?

By volume, China and the United States publish the most (1.7k and 339 works in 2022-now).

By volume, 2022-now

  1. 1 China 1.7k works
  2. 2 United States 339 works
  3. 3 Italy 244 works
  4. 4 Indonesia 229 works
  5. 5 United Kingdom 221 works
  6. 6 Türkiye 220 works
  7. 7 South Korea 177 works
  8. 8 Germany 165 works
  9. 9 India 145 works
  10. 10 Norway 134 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: 47.6%United States: 9.5%Italy: 6.8%Indonesia: 6.4%6 others listed: 29.7%48%largest
China1,703 · 47.6%United States339 · 9.5%Italy244 · 6.8%Indonesia229 · 6.4%6 others listed1,061 · 29.7%

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

Which institutions lead Maritime Transport Emissions and Efficiency research?

By volume in 2022-now, 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-now

  1. 1 Shanghai Maritime UniversityChina 162 works
  2. 2 Dalian Maritime UniversityChina 161 works
  3. 3 Wuhan University of TechnologyChina 116 works
  4. 4 Shanghai Jiao Tong UniversityChina 60 works
  5. 5 Harbin Engineering UniversityChina 54 works
  6. 6 Norwegian University of Science and TechnologyNorway 54 works
  7. 7 Delft University of TechnologyNetherlands 44 works
  8. 8 Sepuluh Nopember Institute of TechnologyIndonesia 44 works
  9. 9 Hong Kong Polytechnic UniversityChina 42 works
  10. 10 Odessa National Maritime UniversityUkraine 41 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, Frede Blaabjerg and Qiang Zhang.

  1. 1 Lídia Morawska Australia 244k citations
  2. 2 Frede Blaabjerg Denmark 203k citations
  3. 3 Qiang Zhang China 184k citations
  4. 4 Seyedali Mirjalili Australia 154k citations

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

What are the most cited papers in Maritime Transport Emissions and Efficiency?

The most cited paper in Maritime Transport Emissions and Efficiency is "Mortality from Ship Emissions: A Global Assessment" (James J. Corbett, James J. Winebrake, Erin H. Green et al., 2007), with 1,160 citations. Next come "Transport and climate change: a review" (1,135) and "Transport impacts on atmosphere and climate: Shipping" (1,042).

Most cited papers
#PaperReleasedCitations
1 Mortality from Ship Emissions: A Global Assessment James J. Corbett, James J. Winebrake, Erin H. Green et al. · Environmental Science & Technology 5 Nov 2007 1,160
2 Transport and climate change: a review Lee Chapman · Journal of Transport Geography 13 Feb 2007 1,135
3 Transport impacts on atmosphere and climate: Shipping Veronika Eyring, Ivar S. A. Isaksen, Terje Koren Berntsen et al. · Atmospheric Environment 20 May 2009 1,042
4 State-of-the-art technologies, measures, and potential for reducing GHG emissions from shipping – A review Evert Alwin Bouman, Elizabeth Lindstad, Agathe Rialland et al. · Transportation Research Part D Transport and Environment Open access 4 Apr 2017 901
5 A survey of berth allocation and quay crane scheduling problems in container terminals Christian Bierwirth, Frank Meisel · European Journal of Operational Research 29 May 2009 855
All 100 most cited papers, with filters and sorting

Where is Maritime Transport Emissions and Efficiency research done?

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

Largest cities, 2022-now

  1. 1 ShanghaiChina 332 works
  2. 2 BeijingChina 222 works
  3. 3 DalianChina 199 works
  4. 4 WuhanChina 199 works
  5. 5 IstanbulTürkiye 84 works
  6. 6 TrondheimNorway 79 works
  7. 7 HarbinChina 74 works
  8. 8 SurabayaIndonesia 67 works
  9. 9 BusanSouth Korea 64 works
  10. 10 SingaporeSingapore 63 works

Where it is the local speciality

  1. VallejoUS · 21.8 works95×
  2. GdyniaPL · 24.1 works82×
  3. MalmoSE · 23.6 works40×
  4. GalatiRO · 22.3 works31×
← 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, Nanyang Technological University, Hong Kong Polytechnic University and Dalian Maritime 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%mean 20.66%fractional works in this field (log) →share of work in the world top 10% →Nanyang Technologica…World Maritime Unive…Hong Kong Polytechni…Dalian Maritime Univ…
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Nanyang Technological UniversitySingapore 77.536.0%6.7×26 +14.4%
2Hong Kong Polytechnic UniversityChina 71.619.5%10.0×42 +104.1%
3Dalian Maritime UniversityChina 71.119.3%90.3×160 +142.3%
4World Maritime UniversitySweden 66.129.1%357.7×24 +33.3%
5Shanghai Maritime UniversityChina 65.511.1%134.6×162 +223.8%
6Liverpool John Moores UniversityUnited Kingdom 65.326.5%18.8×14 +213.4%
7University of StrathclydeUnited Kingdom 64.120.3%29.3×38 +13.0%
8Wuhan University of TechnologyChina 62.212.7%29.4×116 +34.6%
9Norwegian University of Science and TechnologyNorway 61.48.9%19.3×54 +35.1%
10National University of SingaporeSingapore 61.223.2%2.6×15 +27.2%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Maritime Transport Emissions and Efficiency, country by country

Is Maritime Transport Emissions and Efficiency research growing?

Output in 2022-2025 was 60% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Maritime Transport Emissions and Efficiency.

still counting19801990200020102020
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 Maritime Transport Emissions and Efficiency as a percentage of every work published that year, 0.021% in 2024.

still counting0.010%0.020%0.030%Maritime Transport Emissions and Efficiency0.026% in 202519801990200020102020

Fractional works of Maritime Transport Emissions and Efficiency 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.

still counting5%10%15%Maritime Transport Emissions and Efficiency10.0% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

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.

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