Arctic-Ocean Shipping Doubles as Melting Ice Opens Sea Lanes

Shorter northern routes and lengthening northern seasons may be a small silver lining in the looming clouds of climate change.

2 min read
Arctic Ocean ice cap's retreat towards Greenland, 1970-2100
The Arctic Institute

The melting of northern ice continues to open long-pursued arctic sea routes to practical navigation, according to a new Arctic Institute Center for Circumpolar Security Studies (CCSS) report. By the middle of November 2012, when ice closes the Northern Sea Route (along Eurasia’s north shore from the Bering Strait to Murmansk), shipping volume will have soared more than 75% above 2011 tonnage—to about 1.5 million tons, up from 850,000 tons.  

Map 2

Image: The Arctic Institute
Click on image for a larger view.

Since the Arctic Ocean ice cap seems to be retreating towards Greenland and Canada’s Nunavut Territory, the Northern Sea Route is the first of the three principal arctic sea lanes to become navigable. The map, left, shows the retreat of the ice from 1970 through 2100. (The others are the fabled Northwest Passage, which threads among Canada’s boreal islands, and the Transpolar Sea Route, straight across the top of the world from the Bering Strait passing northwest of Svalbard and on to  Iceland. See map below.)

CCSS analysts Malte Humpert and Andreas Raspotnik note that some northern connections between European and Asian ports can be as much as 40 percent shorter than courses carrying ships through the Suez Canal. This saves fuel and salaries on each trip, of course. It also allows ship-owners to make more trips per year or, alternatively, make super-slow trips—attractive because dropping a ship’s speed by 40% can double its fuel efficiency, cutting both costs and emissions. (Though Humpert and Raspotnik don’t mention it, the northern route also avoids the pirate-haunted waters at the mouth of the Red Sea.)

As the authors point out, “Global shipping operations depend on three key factors: predictability, punctuality, and economy-of-scale,” all still problematic along Arctic routes. But the ice cap's steady retreat suggests that these important supports will evolve.

Map 1

Image: The Arctic Institute
Click on image for a larger view.

For another, less optimistic assessment global warming’s impact—on the endemic ranges of some infectious diseases as temperatures and sea-levels rise—tune in Tuesday, 16 October, for the free webcast, “Oceans, Climate and Human Health: the Cholera Paradigm” with former National Science Foundation director Rita R. Colwell. (I'll be moderating.) This is the first of a monthly series, “Blue Marvel—Ocean Mysteries,” presented by the Ocean Research Collaboration Network in conjunction with the National Science Foundation and the Group on Earth Observations. Register at

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This photograph shows a car with the words “We Drive Solar” on the door, connected to a charging station. A windmill can be seen in the background.

The Dutch city of Utrecht is embracing vehicle-to-grid technology, an example of which is shown here—an EV connected to a bidirectional charger. The historic Rijn en Zon windmill provides a fitting background for this scene.

We Drive Solar

Hundreds of charging stations for electric vehicles dot Utrecht’s urban landscape in the Netherlands like little electric mushrooms. Unlike those you may have grown accustomed to seeing, many of these stations don’t just charge electric cars—they can also send power from vehicle batteries to the local utility grid for use by homes and businesses.

Debates over the feasibility and value of such vehicle-to-grid technology go back decades. Those arguments are not yet settled. But big automakers like Volkswagen, Nissan, and Hyundai have moved to produce the kinds of cars that can use such bidirectional chargers—alongside similar vehicle-to-home technology, whereby your car can power your house, say, during a blackout, as promoted by Ford with its new F-150 Lightning. Given the rapid uptake of electric vehicles, many people are thinking hard about how to make the best use of all that rolling battery power.

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