Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


UW Scientists Team with Coast Guard to Explore Ice-Free Arctic Ocean

With the melting ice in the Arctic, U.S. Coast Guard crews based in Alaska have taken on a new challenge: carefully deploying scientific equipment through cracks in the ice from an airplane hundreds of feet in the air.

It's all part of a new partnership that has evolved since disappearing Arctic ice has opened vast new frontiers -- for the Coast Guard and for University of Washington scientists.

This year, the lowest ebb of Arctic sea ice covered less area than at any time since scientists began recording it. From 1979 to 2000, the average low point for the year was 7 million square kilometers, or 2.7 million square miles. This year, it's less than half as much -- 3.4 million square kilometers.

"It used to be that the ice just pulled back a bit from the beach each year," said Jamie Morison, an oceanographer at the UW's Applied Physics Laboratory. "Now we're seeing huge areas of open water."

Suddenly faced with a great expansion of the water over which it must monitor ship traffic and perform search-and-rescue operations, the Coast Guard has begun making regular flights over the Arctic, taking off from Kodiak, Alaska. UW researchers, equally eager to explore the newly accessible ocean, are among those who have tagged along on regular Coast Guard flights, known as Arctic Domain Awareness flights, to deploy scientific equipment.

The UW is leading a project known as the Seasonal Ice Zone Reconnaissance Surveys that aims to take repeated ocean, ice and atmospheric measurements in the Beaufort and Chukchi Seas, north and west of Alaska.

Researchers are able to arrange for deployment of equipment to take those measurements via the Coast Guard's scheduled C-130 Hercules aircraft tours. They have flown monthly this summer, with Coast Guard crews deploying 19 probes as far as 80 degrees north latitude, north of most land masses. The final flight will be in mid-October, after which it gets too dark to travel very far and the ice returns.

The researchers are studying the impact of the lack of ice cover. For instance, ocean surface temperature can be 5 or 6 degrees warmer without ice. Because there's no ice to block solar radiation, the layer of warmer water extends deeper and that affects circulation patterns and slows the growth of ice during the winter. Changes in the ocean surface temperatures can also have profound effect on the atmosphere and changes in the temperature, humidity and cloud cover can in turn affect how fast sea ice melts or grows.

"For the first time we're measuring ocean and atmosphere in an integrated way and trying to track the changes," said Axel Schweiger, a climatologist and chair of the Applied Physics Laboratory's Polar Science Center.

UW scientists involved with the International Arctic Buoy Program, designed to monitor sea level pressure, surface air temperature and ice motion, have also taken advantage of the Coast Guard flights. The multiagency program is led by the UW's Polar Science Center and has deployed hundreds of buoys in the Arctic since 1979.

The researchers have modified some equipment so it can be tossed out of airplanes rather than deployed by ship. One large buoy used by the International Arctic Buoy Program carries instruments that transmit air temperature and pressure information via satellite and gets rolled out of the back of the airplane flying 300 feet above the surface. At that height, a parachute fills and releases in time to temper the buoy's landing. If the buoy is dropped from higher it might hit too hard, damaging the instruments; too low and the parachute may drag the buoy sideways in the water. The researchers have learned about both issues the hard way.

Coast Guard crews have also been deploying 3-foot-long, tube-shaped instrument packages out the side door of the planes. Once the package hits the water, it drops a torpedo-shaped sensor probe that travels to a depth of 1,000 meters, or 3,280 feet, in about 10 minutes. The probe is connected by a thin copper wire to a radio transmitter that floats on the surface. The probe sends data about water temperature and salinity up the thin wire to the surface transmitter, which relays it by VHF radio back to the airplane circling above.

Without the planes, the researchers would have to hire a ship, usually an icebreaker, to bring the instruments to the targeted location. Or, they could pay for a specialized research aircraft, an expensive proposition, particularly for research that benefits from weekly or monthly expeditions. "You won't get that kind of repeat coverage with a designated research aircraft," Schweiger said.

The Coast Guard appears to get some value from taking the scientists along too. Data from the buoys about air pressure and temperature is fed into the world meteorological network.

"This weather data helps them fly safely," said Ignatius Rigor, a mathematician at the Applied Physics Laboratory who coordinates the International Arctic Buoy Program.

The scientists can also field questions from the crew about ice thickness and the weather in the area, Morison said.

The data they collect is already being used by many institutions as well, including the National Snow and Ice Data Center, which closely monitors Arctic sea ice.

The researchers hope to be able to continue their collaboration with the Coast Guard in years to come.

The Seasonal Ice Zone Reconnaissance Surveys program is funded by the Office of Naval Research and the International Arctic Buoy Program is funded by the 20 research and operational institutions that comprise the program.

For more information, contact Schweiger at or 206-543-1312.

Nancy Gohring | Newswise Science News
Further information:

More articles from Earth Sciences:

nachricht UCI and NASA document accelerated glacier melting in West Antarctica
26.10.2016 | University of California - Irvine

nachricht Ice shelf vibrations cause unusual waves in Antarctic atmosphere
25.10.2016 | American Geophysical Union

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

The gene of autumn colours

27.10.2016 | Life Sciences

Polymer scaffolds build a better pill to swallow

27.10.2016 | Life Sciences

Greater Range and Longer Lifetime

26.10.2016 | Power and Electrical Engineering

More VideoLinks >>>