KU research team keeping cool in Greenland


Lawrence,KS (07-26-2005)

From Lawrence-Journal World
By Terry Rombeck



David Braaten has found a way to beat the summer heat--head to Greenland, where the highs are in the upper teens.

Braaten, an associate professor of geography at Kansas University, has spent the last two weeks there with a team of researchers working to perfect a radar system to measure ice sheets.

"It stays pretty cold," Braaten said in a phone interview with the Journal-World. "We sleep in unheated tents. You dont want to sleep with an arm outside the sleeping bag. You want to keep yourself in."

Not that hes had much time to sleep. Braaten and his team have been working 14-hour days, trying to finish their research before they leave on Thursday.

"If were not sleeping, were working or eating," Braaten said. "There hasnt been much time to just relax."

This is the first time the KU group---which also includes another faculty member, a research engineer, three graduate students and an undergraduate student--has done research in the field since KU became a national center for studying polar ice caps.

Measuring the future

A five-year, $19 million grant from the National Science Foundation, announced in April, created the Center for Remote Sensing of Ice Sheets. It brought together 40 scientists from 10 universities and NASA to study the implications of global warming and sea-level rise.

Specifically, the work is focused on the future of data-gathering on the Greenland ice sheets, with future applications also in Antarctica.

This is the first time the researchers are testing a surface-based radar, designed at KU, that has a fine resolution of about 3 centimeters. The radar will be used to measure layers of snow and ice accumulation, to give scientists a better idea about the composition of the ice sheets.

The researchers are digging several meters into the snow to verify the accuracy of the radars readings.

"Its really the first try of the radar, and its working perfect," Braaten said. "Its beyond our wildest dreams. Ive never seen anything like this before that could match up as perfectly as it is."

Melting quickly

The KU-led group published a paper last September showing Antarcticas ice sheets were melting much faster than they did the previous decade. The melting, which could be the result of global warming, natural climate change or both, could affect millions of people living along coastlines because of sea-level rise.

Understanding the composition of the ice sheets with the new radar could help scientists predict future melting.

"We need to find out how this accumulation is happening both in space and time," said Prasad Gogineni, who directs the KU ice cap center but did not go on the research trip. "Testing this radar for the first time, it will definitely feed into some of the work were going to do as part of the center."

The group is based at Summit Camp, a NSF-led research station in eastern Greenland. In addition to the cold, the sun doesnt set there, making sleeping difficult.

But the conditions arent all bad. There are two professional cooks at the camp who get supplies every two weeks, so the scientists are well-fed. The menu has included chicken divan, Mexican food and pizza.

"The cooks are fantastic," Braaten said. "These arent scientists who just happen to cook."

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