Greenland's Port Communities Face Extreme Shipping-Related Air Pollution, Measurements Reveal

Air quality screenings conducted at the port of Ilulissat in Greenland have revealed pollution levels 60 to 70 times higher than the safe particle concentrations recommended by the World Health Organization (WHO), which sets the benchmark at 1,000 particles per cubic centimeter.

The measurements, carried out by Dr. Kåre Press-Kristensen, senior advisor on air quality and climate at Green Global Future, recorded average concentrations between 60,000 and 70,000 particles/cm³ at the Ilulissat port, with peaks exceeding 200,000 particles/cm³. The readings were taken between July 29 and August 7, 2026, and revealed a high proportion of ultrafine particles laden with soot (black carbon) — a substance that is both toxic to human health and a potent driver of Arctic warming. The Arctic is warming at roughly four times the global average rate, a pattern documented in peer-reviewed research, making black carbon deposition on snow and ice especially consequential for the region.

Health and Environmental Concerns

The findings indicate that port workers and residents of Ilulissat are regularly exposed to hazardous levels of toxic air pollution, particularly when winds carry emissions from the port into nearby residential areas. Such exposure elevates the risk of strokes, cardiovascular disease, lung disease, cancer, and premature mortality. Additionally, soot particles are recognized as a significant contributor to global warming.

While measurements were confined to Ilulissat, it is highly probable that similar pollution levels persist at other Greenlandic ports that have yet to install shore-side electrification infrastructure. This is a particular concern for a territory where maritime transport is the primary mode of cargo movement between communities and where the economy is heavily dependent on fisheries and seafood exports.

Cruise ships also contribute substantially to air pollution in Greenlandic communities, as they often run their engines continuously while in port or at anchor. A single large cruise ship can emit as much toxic air pollution as 3,000 to 5,000 cars per second. Arctic cruise traffic has expanded in recent years as sea ice retreat has opened previously inaccessible routes, adding to the cumulative exposure faced by small coastal settlements.

Calls for Electrification and Cleaner Fuels

The results underscore an urgent need for the electrification of port equipment across Greenland, along with onshore power supply for domestic vessels, to mitigate both local air pollution and climate impacts. Shore-side power infrastructure has already been deployed at several ports in Norway and other Nordic countries, offering a demonstrated model for Arctic and sub-Arctic maritime communities.

"Greenland and other Arctic nations have a great potential to produce pollution-free renewable electricity — through hydro, solar, and/or wind — and to cut both air pollution and their dependence on fuel prices fluctuating with the situation in the Middle East," said Dr. Press-Kristensen. "Electrification of port equipment and onshore power for vessels are also important steps to consolidate fishing and export of seafoods. However, to rapidly reduce emissions at sea, ships operating in Greenland's waters and throughout the Arctic must switch to distillate fuels — increasingly identified as polar fuels — such as marine gas oil, which is already used by Greenland-flagged vessels."

Dr. Press-Kristensen further urged Greenland to advance these goals by continuing to support a polar fuels proposal at the International Maritime Organization (IMO); banning scrubber water discharges in territorial seas, as recommended by OSPAR and already implemented by other Nordic nations; and establishing a green shipping corridor between Nuuk and Reykjavik to help protect fragile Arctic ecosystems.

"The expense of electrification of ports will be recouped through fuel oil savings. This will eliminate local pollution from ships at berths, improve public health in the wider vicinity, and reduce global warming," he added.

Emission Control Areas and Regulatory Gaps

The Northeast Atlantic Emission Control Area (ECA), adopted by the IMO on May 1, 2026, represents a significant step toward reducing sulfur oxide (SOx) and nitrogen oxide (NOx) emissions. However, it will not adequately address black carbon emissions, which are a primary driver of Arctic climate heating. Under the ECA rules, ships can still use traditional heavy fuel oils paired with scrubbers or ultra-low sulphur fuel oils to meet sulphur requirements — both of which emit high levels of black carbon.

"Both these compliance methods will not reduce black carbon emissions to the same low levels that using polar fuels can do," said Dr. Sian Prior, Lead Advisor to the Clean Arctic Alliance.

A proposal on polar fuels, co-sponsored by Denmark, Germany, France, and the Solomon Islands, is currently under consideration at the IMO.

"The Clean Arctic Alliance is calling on other Arctic countries to support Denmark in the creation of this new regulation requiring the use of cleaner maritime fuels in order to protect the Arctic," Dr. Prior added. She emphasized that the regulation should apply within the geographic scope defined by the Arctic Monitoring and Assessment Programme (AMAP) under the Arctic Council, to ensure consistency across the Arctic. Black carbon emissions can travel hundreds to thousands of kilometers through the atmosphere; when emitted further south, they can settle on Arctic snow and ice, accelerating melting.

Background: Heavy Fuel Oil Ban and Regulatory Timeline

July 1, 2026, marked two years since the IMO ban on the use and carriage of heavy fuel oil (HFO) in Arctic waters entered into force. However, the ban will not be fully implemented until July 2029, and even then will apply only to waters where sea ice is present.

In May 2025, Greenland-based shipping company Royal Arctic Line announced it would discontinue the use of heavy fuel oil.

The North-East Atlantic ECA, adopted on May 1, 2026, is set to take effect in March 2027. While both the HFO ban and the ECA are important regulatory milestones, neither specifically targets the Arctic's black carbon problem. Transitioning to clean fuels — such as marine gas oils or emerging low-carbon alternatives — would further reduce black carbon emissions, which is why Greenland's support for the Denmark-led polar fuel proposal at the IMO is considered critical.

New Report: Black Carbon Emissions from Arctic Shipping

The report Black Carbon Emissions from Ships in the Arctic 2019–2024 offers a comprehensive analysis of tank-to-wake black carbon emissions from Arctic shipping using three geographic definitions: a latitudinal band north of 60°N (excluding the Baltic Sea and Gulf of Alaska), the Polar Code Arctic waters, and a broader ecological boundary defined by AMAP. The study estimates black carbon emissions for 2019, 2022, and 2024, examining seasonal patterns of Arctic shipping routes, vessel characteristics, fuel consumption by Exclusive Economic Zone (EEZ) and vessel type, and overall energy use. Historical estimates illustrate how Arctic shipping activity and associated emissions have evolved, while forecasts provide insight into how emissions growth could impact the Arctic and inform decisions on fuel choices, operational practices, and regulatory strategies such as those proposed under PPR 13/6.

Source: Clean Arctic Alliance