Connect with us

Alternative Fuels

New analysis of shipping emissions reveals air pollution has a larger effect on climate than previously thought

Oxford University Climate Processes Group researchers analysed satellite data to more accurately quantify effect of human aerosol emissions on climate change.
Admin

Published

4 years ago

on

Invisible ship tracks show large cloud sensitivity to aerosol

A recently published study ‘Invisible ship tracks show large cloud sensitivity to aerosol’ has found air pollution from vessels having a larger effect on climate than previously thought, according to the University of Oxford on Thursday (6 October).

The study used a global database of ship routes containing the locations of almost all ships at a given time: more than two million ship paths over six years.

The research team analysed data on ship emissions as a model system for quantifying the climatic effect of human aerosol emissions in general.

Sometimes, when a ship passes underneath a cloud, its aerosol emissions brighten the cloud in a long line, similar to a contrail.

These so-called ship tracks have been studied previously, however the vast majority of ships leave no visible tracks. This was the first study to provide a quantitative measure of the impact of invisible ship tracks on cloud properties, and thus their cooling effect.

Brighter clouds reflect more of the sunlight that strikes them, deflecting it from the earth’s surface. However, it is currently unclear how large this cooling effect is, particularly if the cloud brightness change cannot be seen in satellite images.

Key findings of the study:

  • Invisible shipping tracks had a clear impact on the properties of clouds they polluted.
  • Surprisingly, the specific effects were different to those of visible shipping tracks.
  • Invisible ship tracks showed a smaller increase (roughly 50% less) in the number of droplets in the clouds, but the amount of water increased more, compared to the effect of visible tracks. This implies that for a given increase in droplets, the increase in water is larger than thought, equating to a greater cooling effect.
  • The same may be true for aerosol emissions more generally – clouds may react more strongly to air pollution than previously thought, getting brighter and having a stronger cooling effect.

Note: The study ‘Invisible ship tracks show large cloud sensitivity to aerosol’, has been published in Nature. 

 

Photo credit: ‘Invisible ship tracks show large cloud sensitivity to aerosol’ study
Published: 11 October, 2022

Related Topics:
Continue Reading

LNG Bunkering

PIL’s LNG dual-fuel boxship “Kota Elok” arrives in Singapore on maiden call

As the first of 13 new 13,000 TEU vessels joining its fleet, Kota Elok is equipped to operate on LNG and low-sulphur fuel oil that helps reduce our greenhouse gas emissions.

Admin

Published

15 hours ago

on

July 21, 2026

By

PIL's LNG dual-fuel boxship “Kota Elok” arrives in Singapore on maiden call

Singapore-based Pacific International Lines Pte Ltd on Monday (20 July) said its first 13,000 TEU LNG dual-fuel container vessel, Kota Elok, recently made her maiden call to Singapore on 15 July.

As the first of 13 new 13,000 TEU vessels joining its fleet, Kota Elok is equipped to operate on liquefied natural gas (LNG) and low-sulphur fuel oil that helps reduce our greenhouse gas emissions. 

The vessel also incorporated energy-saving features and digital technologies to reduce fuel consumption and enhance operational performance, as well as a bow windshield to improve aerodynamics, contributing to improved fuel efficiency and lower emissions over the course of long-haul voyages.

“Following Singapore, Kota Elok will continue her voyage on our East Coast Service 1 (ES1) route to South America, calling at ports in Brazil, Uruguay, and Argentina before returning to Asia,” the company said in a social media post. 

Kota Elok also became PIL’s first vessel to receive Lloyd’s Register certification for compliance with the IACS UR E26 and UR E27 cyber security requirements.

Developed by the International Association of Classification Societies (IACS), UR E26 and UR E27 are mandatory cyber resilience requirements for newbuild vessels contracted from 1 July 2024. 

 

Photo credit: Pacific International Lines
Published: 21 July, 2026

Continue Reading

LNG Bunkering

CIMC SOE secures order for 12,000-cbm LNG bunkering vessel from Sinopec Clean Energy

Once operational, the vessel is expected to strengthen Sinopec’s domestic coastal LNG bunkering network and help address gaps in China’s alternative fuel bunkering infrastructure.
Admin

Published

15 hours ago

on

July 21, 2026

By

CIMC SOE secures order for 12,000-cbm LNG bunkering vessel from Sinopec Clean Energy

China’s Nantong CIMC Sinopacific Offshore & Engineering Co., Ltd. (CIMC SOE) recently signed a contract with Sinopec (Beijing) Clean Energy Co., Ltd. to build a 12,000-cubic metre (m3) LNG bunkering vessel, according to Chinese maritime media.

The vessel is scheduled for delivery in 2028 and will support Sinopec’s efforts to expand its presence in the marine clean energy sector.

Once operational, the vessel is expected to strengthen Sinopec’s domestic coastal LNG bunkering network and help address gaps in China’s LNG bunkering infrastructure.

With this signing , CIMC Pacific Offshore Engineering’s LNG bunkering vessel orderbook is further strengthened, maintaining its leading position in the global market for small and medium-sized LNG bunkering vessels.

The contract also marked another milestone for CIMC SOE, which has seen a sharp increase in orders and business performance this year amid a surge in domestic LNG vessel demand.

 

Photo credit: Nantong CIMC Sinopacific Offshore & Engineering
Published: 21 July, 2026

Continue Reading

Nuclear

ABS awards AiP to Korean institute for SMR-powered container ship concept design

KRISO says AiP recognises the technical feasibility and safety of its concept design, marking an important milestone toward the development of next-generation nuclear-powered commercial ships.
Admin

Published

15 hours ago

on

July 21, 2026

By

ABS awards AiP to Korean institute for SMR-powered container ship concept design

Korea Research Institute of Ships & Ocean Engineering (KRISO) on Thursday (16 July) received Approval in Principle (AiP) from the American Bureau of Shipping (ABS) for its concept design of a 15,000 TEU Small Modular Reactor (SMR)-powered container ship utilising Molten Salt Reactor (MSR) technology.

KRISO said the AiP recognises the technical feasibility and safety of its concept design, marking an important milestone toward the development of next-generation nuclear-powered commercial ships.

“This achievement demonstrates international recognition of KRISO’s technological capabilities in the rapidly evolving field of nuclear-powered shipping, supporting the transition toward low-carbon maritime transport,” it said. 

Building on this milestone, KRISO will continue advancing basic and detailed ship design, paving the way for future demonstration and commercialisation of SMR-powered vessels. 

Through continued R&D and international collaboration, KRISO remains committed to strengthening next-generation maritime technologies and contributing to the safe deployment of nuclear propulsion in the maritime industry.

 

Photo credit: Korea Research Institute of Ships & Ocean Engineering
Published: 21 July, 2026

Continue Reading

Trending