IceBridge 2014 Summer Science Team Meeting

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Group photo

Members of the IceBridge team gather for a group photo on the last day of IceBridge’s 2014 summer science team meeting. Credit: UCI / Bernd Scheuchl

On June 24 and 25, 2014, the IceBridge science team met at the University of California Irvine. Twice a year, the IceBridge science team meets to share scientific presentations, discuss the mission’s performance and prepare for the next campaign.

Joint session

A joint session of the land ice and sea ice teams. Credit: UCI / Bernd Scheuchl

Meetings typically begin with a joint session of the land ice and sea ice teams. These sessions focus on items of interest to the entire team such as updates from NASA Headquarters.

Sea ice team

A breakout session for IceBridge’s sea ice team. Credit: UCI / Bernd Scheuchl

Later in the meeting the sea ice and land ice teams separate to discuss upcoming flight lines, opportunities for collaboration and the status of new and existing data products. The above photo shows a meeting of the sea ice team.

Flight line printouts

Printed copies of proposed Antarctic flight lines for 2014. Credit: UCI / Bernd Scheuchl

One of the major accomplishments in each IceBridge science team meeting is prioritizing the next campaign’s flight lines. Here we see printed copies of flight lines over different parts of Antarctica.

IceBridge Data on the Web

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By George Hale, IceBridge Science Outreach Coordinator, NASA Goddard Space Flight Center

During each campaign IceBridge’s suite of instruments collects a vast amount of data on polar land and sea ice. These data have proven themselves useful with the research community using them in seasonal sea ice forecasts and computer simulations of ice sheets, and to build maps of the bedrock beneath the Greenland and Antarctic ice sheets. But getting IceBridge’s data into a place where researchers can use them is a big task.

After the end of a campaign researchers process instrument data and upload it to the National Snow and Ice Data Center (NSIDC) in Boulder, Colorado. NSIDC then archives and publishes the datasets on the web where it is freely available to the public. IceBridge has a significant presence on the NSIDC website with more than 60 available datasets.

screenshot of IceBridge data portal page

The IceBridge data portal on the National Snow and Ice Data Center (NSIDC) website allows users to select individual IceBridge flight lines.

Preparing data is a time-intensive process and can take weeks or months to finish, but researchers are required to have their data in to NSIDC within six months of the campaign’s end.

The first step to making measurements public – after collecting them of course – is to back up the data. A good deal of this is done in the field. After each flight, instrument operators copy data onto media like external hard drives to be processed later. Following the campaign, instrument teams go through the data to process it and produce different data products suitable for posting.

Hard drive array

Array of disks used to store instrument data during scientific flights. Credit: NASA / George Hale

These data products are categorized into different groups depending on how much processing they’ve undergone, following standards based on NASA’s Earth Science Reference Handbook, which was published in 2006. The level of processing for each dataset is noted by a letter L followed by a number (e.g., L0, L1B, L3) ranging from 0 (least processed) to 4 (most processed).

Data Level Definitions

  • Level 0 – raw instrument data with minimal processing to remove duplicate information, noise and other errors
  • Level 1B – instrument data with timestamps and geo-referencing information
  • Level1BX – Level 1B data in a format useable for comparing measurements between different instruments
  • Level 2 – variables derived from level 1 data
  • Level 3 –  level 2 variables mapped on a uniform grid
  • Level 4 –  results from computer models or combination of multiple datasets

As an example, data from the Airborne Topographic Mapper go from distance between the surface and the instrument (L0), to ice elevation (L1B) and elevation, slope and roughness (L2), to surface elevation rate of change (L4).

Racks containing instrument hardware aboard the P-3

Racks of instrument hardware aboard the NASA P-3 during a data collection flight. Credit: NASA / George Hale

Once processing is complete instrument teams send the data products to NSIDC, who stores the data on a public website. The NSIDC site contains separate pages for each instrument and data product and maintains a data portal where researchers can select individual IceBridge flights on an interactive map. Product pages contain a description of the dataset and links to documentation and software like file viewers.

For news about newly released IceBridge data products, visit:
http://nsidc.org/data/icebridge/news.html

To see a list of IceBridge data broken down by instrument with descriptions and links, visit: http://nsidc.org/data/icebridge/instr_data_summary.html

To see the IceBridge data portal, visit:
http://nsidc.org/icebridge/portal/

Around Town: A Photo Tour of Kanger

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Mileage sign

A mileage sign just outside the terminal building at the Kangerlussuaq airport. Credit: NASA / Michael Starobin

A recent blog post talked about IceBridge’s home away from home, the Kangerlussuaq International Science Support Center. But what about the rest of the town of Kanger, as it is sometimes called? Here are a few photos from around this small town of about 500 people built around Greenland’s main transportation hub, the Kangerlussauq International Airport.

Kangerlussuaq

The small Greenland town of Kangerlussuaq. Credit: NASA / Michael Starobin

The airport and town of Kangerlussuaq can trace their roots back to military aviation, first as an airbase known as Bluie West-8 during World War II and later as a U.S. Air Force installation known as Sondrestrom airbase. The airport was turned over to civilian control in the early 1990s, though the 109th Airlift Wing of the New York Air National Guard maintains a presence there to support scientific activity in Greenland. In the above photo we can see pretty much the entire town, with the KISS facility and other similar buildings to the left. The large red building in the center of the photo is a hangar used by Air Greenland.

KISS

The Kangerlussuaq International Science Support center, or KISS, building. Credit: NASA / Michael Starobin

The majority of travelers heading to Greenland move through Kanger on their way to other parts of the country. Among these travelers are researchers who then head to research sites like Swiss Camp, Summit Station and various drilling sites all over the ice sheet. Many of the scientists working in Greenland will spend time at the Kangerlussuaq International Science Support, or KISS, center.

Polar Bear Inn

The Polar Bear Inn houses a convenience store and restaurant a short walk from KISS. Credit: NASA / Michael Starobin

Kanger is a small town, with fairly limited dining and shopping options. The airport cafeteria and main local grocery store are on the other side of town from KISS, unlike the Thai grill / pizzeria / convenience store known as the Polar Bear Inn seen in the above photo.

Bus Shelter

One of the bus stop shelters around town in Kanger. Credit: NASA / Michael Starobin

Despite being small there is a bus system in Kangerlussuaq, with several shelters like the one above throughout town. These shelters are unheated, but a welcome refuge from cold and wind.

Kanger in Snow

A snowy day in Kangerlussuaq. Credit: NASA / Michael Starobin

Here we see what Kangerlussuaq looks like on a snowy and windy day. On average, Kangerlussuaq gets around five or six inches of total precipitation per year, though this spring seemed a little colder and stormier than during the last two IceBridge campaigns. Although Kanger might not get a lot of snow each year, the surroundings can get a little bland during the winter. Like many other places in the Arctic, locals counteract this by painting buildings in town different bold colors, which we can see in the above photo and the next one.

Multicolor buildings

Multicolored buildings are a common sight. Credit: NASA / Michael Starobin

IceBridge’s Home in Kanger

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By Jim Yungel, Airborne Topographic Mapper Program Manager, NASA Wallops Flight Facility

I thought I’d describe the facilities where the science team chooses to stay while here in Kangerlussuaq. One has the choice of staying in the airport hotel or in local lodging that is maintained for visiting scientists, the Kangerlussuaq International Science Support Center, or KISS.

KISS building

Kangerlussuaq International Science Support “KISS” dorm building. Credit: NASA / Jim Yungel

KISS provides what can be called a dormitory for scientists, which is located in the former U.S. Air Force base. In the KISS dorm you get a room (generally two people to a room), and bed linens, common dorm bathrooms and washers/dryers down the hall. We do room cleaning ourselves, no services provided. There are two kitchens in the dorm, so we do a lot of cooking ourselves. Data processing is set up in one room downstairs.

KISS room

A typical room in KISS. Credit: NASA / Jim Yungel

Groceries are sold in a small store near the airport, and because the store is generally only open when we are airborne, one IceBridge team person (who runs our ground GPS unit) ends up shopping for many of us when we fly. Most of us cook meals either teaming up in groups or as individuals after we fly and following our nightly science meeting and weather briefing at 6 p.m. There is a small “mini-store” with expanded hours near the KISS facility where a limited selection of items is available.

Downstairs kitchen

The large kitchen on the first floor of the KISS building. Credit: NASA / Jim Yungel

Besides cooking in the dorms, there are three restaurant choices here in this small airport village.

First is the airport cafeteria, which is being renovated this year and has limited service. No hot breakfasts, cold buffet only, a few selections of hamburgers, chicken, fish and the like for lunch. Dinner generally is re-heated lunch choices.

Second is the nearby Thai grill known as the Polar Bear Inn. Yes, this village in Greenland has a Thai restaurant. They serve pizza, hamburgers, hot dogs, fried chicken, and a Thai menu. The pizza is good, and I personally like the Thai soups. There is seating for about 20 folks in a fast food environment.

Last is the Roklubben, or Row Club, a restaurant by a lake about three miles from town. It’s been a formal restaurant since we began visiting here regularly in the 1990s, but after the air force left, several folks tried to run it on and off over the years. About five years ago, the present owner, Chef Kim took it over. He is strict. You must be on time, and have exactly the number of people in the reservations (no walk-ins.) The Roklubben has a limited menu for just a few days of the week, and about once a week, Kim puts on a Greenlandic Buffet like the one our group attended. It’s expensive (about $80US/person with a drink), but worth it for the experience and trying different Greenlandic food.

Usually we’re here in Kangerlussuaq for three or four weeks. We generally have one buffet meal at the Roklubben as a group. I try to cook several meals for every meal I eat at the Thai restaurant, either cooking for myself or with a small group. We also have our annual Easter ham dinner for the whole NASA team and many of the local KISS folks each year.

KISS common room

Common lounge (completed jigsaw puzzle on table, Danish channels on the TV). Credit: NASA / Jim Yungel

Most of the science team enjoys staying in the KISS facility. We end up being more social than if we live in hotels and eat every night in restaurants. There are group viewings of movies (played from computers), we traditionally work on jigsaw puzzles in the common rooms, go on hikes, and cook together frequently. Several folks are musicians and play guitars, and there are always entertaining discussions going on in the hallways and rooms.

A Treasured Experience

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By Jhony Zavaleta, Earth Science Project Office Project Manager, NASA Ames Research Center

I work as project manager with the Earth Science Project Office based at NASA Ames Research Center in Northern California. My group manages several Earth science research missions such as those studying hurricanes, atmospheric chemistry, and of course, the ice caps.

My job allows me to work with people of many backgrounds, and it is a constant learning process about the science, the technology, and what it takes to get these operations going, sustaining them, and completing them successfully.

DMS ramp pass

Digital Mapping System image mosaic of the Kangerlussuaq airport ramp and people standing nearby captured as the P-3 passed overhead. Credit: NASA / DMS

These operations across the world are as challenging as they are rewarding. I have had the fortune of dealing with professional and dedicated people that have helped make my job easier and our missions successful.

Currently the 2014 Arctic campaign of Operation IceBridge is under way in Kangerlussuaq, Greenland, on a deployment that takes them to places as far north as Thule Air Base, Greenland, and as far west as Fairbanks, Alaska. After a lot of work, coordination, and pre-planning, and the constant and friendly support from the local resources available there, our operations there go very smoothly.

East Greenland Mountains

Mountainous sidewall of a glacier valley in eastern Greenland seen during the Apr. 5, 2014, IceBridge survey flight. Credit: NASA / George Hale

Operating out of a remote location for many weeks, with extremely cold temperatures and limited communications, and without the many comforts of home, can be a personal challenge to everyone on the Operation IceBridge team. These are challenges that the team has learned to endure over the years and they do so with professionalism, dedication and very positive attitudes. It is always easy to see and get a smile from them. It is a team that likes what they do and they do it well.

I have had the opportunity to go on many flights with IceBridge, and this year was one of them. It is something that never gets old and it gives me the opportunity to interact more closely with the team. I went on a flight that covered the glaciers of eastern Greenland. The flight itself was a smooth one, but the view was riveting. Flying over Greenland’s ice cap, so close to its glaciers, in between its mountains, and over its frozen rivers and oceans, is one of the experiences that I treasure the most.

Wash the Windows: Deicing the P-3

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By George Hale, IceBridge Science Outreach Coordinator, NASA Goddard Space Flight Center 

On the morning of Apr. 15 the IceBridge team woke to blowing snow in Kangerlussuaq. The newly fallen snow made the ground a little slipperier than usual, forcing team members walking and driving to the airfield to take a little extra time. The blowing snow also limited visibility somewhat and led to a bit of ice buildup on the P-3, which presented the team with two problems.

P-3 on the ramp on a snowy morning

NASA P-3 on the ramp at the Kangerlussuaq airport on a snowy morning. Credit: NASA / Jim Yungel

Windblown snow covers one of the P-3's side windows

Windblown snow covers one of the P-3′s side windows. Credit: NASA / George Hale

First and foremost, ice buildup on a plane is unsafe. So when icy conditions prevail, airport ground crews spray aircraft exteriors with either an anti-icing substance to prevent ice buildup, or a deicing agent to remove what has built up. Although necessary in those cases, these agents present a problem for IceBridge researchers.

Deicing truck treating the P-3

A deicing truck at the Kangerlussuaq airport ready to remove ice from the NASA P-3. Credit: NASA / Jim Yungel

Small windows on the bottom of the plane allow the lasers and cameras the Airborne Topographic Mapper and Digital Mapping System instruments use to collect data. These instruments point down through windows in the bottom of the P-3′s fuselage. The deicing agent left behind smudges up the windows, which can affect how these instruments perform.

Deicing agent residue on the P-3 wing

Orange deicing agent residue left on the P-3′s wing. Credit: NASA / George Hale

The solution to this problem was pretty simple however. Once the airport ground crew was finished deicing the P-3, instrument team members ventured outside into the blowing snow with towels to wipe the remaining fluid off of the windows. Once the windows were clean it was time for everyone to strap into their seats for takeoff.

Team members clean the P-3

Members of the IceBridge team remove deicing agent from the P-3′s fuselage. Credit: NASA / George Hale

Cleaning one of the bubble windows

P-3 aircraft technician James Schultz cleans one of the P-3′s bubble windows. Credit: NASA / George Hale

Discussing the finer points of cleaning

PolarTREC teacher Russell Hood and DMS engineer Caitlin Barnes discuss the finer points of cleaning the P-3. Credit: NASA / George Hale

Ready for Our Close-up

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During the week of Apr. 7 – 11, IceBridge was visited by a television production crew from the Al Jazeera America program TechKnow. During this week, the crew flew on an IceBridge survey flight and interviewed several members of the team for an upcoming episode of the show, tentatively scheduled for release in May.

“They were very easy to work with and made noticeable efforts keeping a low profile and getting their job done without impacting our daily work too much,” said Michael Studinger, IceBridge project scientist. “Their passion and dedication made them a natural fit for the IceBridge teams.”

TechKnow is a program focusing on the latest in science and technology and the people behind the science. For more about TechKnow visit:

http://america.aljazeera.com/watch/shows/techknow.html

A Tale of Two Glaciers

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By George Hale, IceBridge Science Outreach Coordinator

The glaciers that flow out of the Greenland Ice Sheet move tons of ice out of the ice sheet each year. Many of these rivers of ice meet the ocean where relatively warm currents weaken the glacier’s terminus, causing icebergs to break off in a process known as calving. This forms a cliff-like feature called a calving front, where icebergs break off and fall into the sea.

Jakobshavn Glacier calving front

The calving front of Jakobshavn Glacier and calved icebergs as it appeared in April 2012. Credit: NASA / Jefferson Beck

The presence of these currents is part of the reason why ocean-terminating glaciers are so dynamic. In contrast, land-terminating glaciers move more slowly and lose mass through melting on the surface rather than calving.

On a recent IceBridge flight, instruments aboard the P-3 captured views of two very different glaciers in east Greenland, the De Geer and Wahlenberg glaciers. The images below show the difference between a dynamic, ocean-terminating glacier (De Geer) and a land-terminating glacier that is essentially dormant (Wahlenberg).

DMS mosaic of glacier calving frontAbove is an image mosaic from the Digital Mapping System aboard the NASA P-3 showing the terminus of the De Geer Glacier in east Greenland. The heavily crevassed end of the glacier is to the left of the image and large icebergs are to the right. Credit: NASA / DMS / Eric Fraim

ATM plot of De Geer Glacier

This image, is a plot showing data on De Geer Glacier from the Airborne Topographic Mapper instrument, a laser altimeter that measures ice surface elevation. Here we see the differences in elevation between before and after the calving front and in crevasses on the surface.

ATM plot of Wahlenberg Glacier

In contrast, this ATM plot of the land-terminating Wahlenberg Glacier shows a smoother surface and more gradual change in elevation along its end.

 

Warming Things Up

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By George Hale, IceBridge Science Outreach Coordinator, NASA Goddard Space Flight Center

Each morning of an IceBridge campaign members of the team go through the process of putting on warm layers to handle the cold weather. And while cold affects people extreme cold poses a challenge to IceBridge’s equipment ranging from camera batteries to the P-3 itself.

Steam rising from buildings at Kangerlussuaq airport

Steam rising from hangar buildings at Kangerlussuaq’s airport on a -15 degree Fahrenheit morning on Apr. 8, 2014. Credit: NASA / George Hale

It’s morning in Kangerlussuaq, Greenland, and time to get ready for another day of data collection. After grabbing a quick breakfast the team starts preparing to head to the airport, putting on warm layers to combat the cold weather. In April the temperatures in Kangerlussuaq can vary from highs around 40 Fahrenheit down to below zero, so it’s important to dress accordingly.

The exceptionally cold mornings, those in the single digits and below, pose even more of a challenge to the team than what to wear. The cold not only affects people, it affects the cars and trucks the team use to get to the airfield and even the aircraft itself.

P-3 on a cold morning

The NASA P-3 sitting on the ramp at Kangerlussuaq airport on a cold morning while external heaters warm the aircraft cabin. Credit: NASA / George Hale

Anyone who has had to start the car on a cold winter morning would agree that cold weather is tough on cars. And although that is the case, extreme cold makes operating an aircraft challenging. Unlike Thule there is no hangar for the P-3 to sit in overnight, leaving it exposed to the cold. This calls for extra steps to prep the plane in the mornings.

Well before takeoff, the P-3 crew head out to the airfield to get things started. The first step is connecting hoses from portable heaters known as huffers to openings on special insulated covers on the engines. These insulated covers go on immediately after the P-3 returns from a flight, and while they don’t keep the engines warm overnight, they do trap heated air and allow the engine to warm faster. Other heaters supply warm air to the P-3′s cabin to start warming the computer equipment inside.

Movable heater warming up P-3 engines

A movable heater known as a huffer supplies warm air to two of the P-3′s engines on a cold morning in Kangerlussuaq, Greenland. Credit: NASA / George Hale

Once this is started the crew will turn on the P-3′s auxiliary power unit, or APU, which provides heat and electrical power for the plane. However when it gets really cold, say -15 Fahrenheit like it was on the morning of Apr. 8, the APU itself also needs to be heated to make sure the oil in the APU is warm enough to start.

With the APU running the P-3 has enough power and heat to allow researchers to begin warming up their instruments and computers. After a while the engines warm up enough for the flight crew to remove the insulating covers and then it’s time to fuel up and start the engines, which the pilots run for  a while to make sure everything is right before taking off.

Cold mornings make the already complex task of operating a flying laboratory even more challenging. This means that pre-flight preparations take a bit longer, but thanks to the hard work of aircraft crew, airport support personnel and instrument operators, the process runs as smoothly as possible.

Carrying On: IceBridge’s Cargo

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By George Hale, IceBridge Science Outreach Coordinator, NASA Goddard Space Flight Center

IceBridge uses a variety of instruments to measure polar ice, but the equipment mounted to the P-3 is only part of what’s needed for a successful campaign. Ground-based GPS stations ensure instrument accuracy and archiving and processing data calls for all sorts of computer hardware. Also, the P-3 crew needs tools, supplies and spare parts to ensure the plane keeps running in top condition.

P-3 on the ramp at Kangerlussuaq airport

The P-3 on the ramp at Kangerlussuaq shortly after arriving on Apr. 4, 2014. Credit: NASA / George Hale

Some of this gear gets shipped ahead, but a sizeable portion travels on the P-3 itself both into the field and from base to base. Loading and unloading all of this cargo (and the team’s luggage) is a big job, but the team has practiced the job many times, allowing them to finish quickly.

To unload luggage the team formed a human chain, passing bags from the plane, down the stairs, and to the ground.

Moving luggage down the stairs

Passing luggage down the stairs from the P-3. Credit: NASA / George Hale

Gear cases and spare parts took a little more care. For this, airport ground crew brought over a conveyor truck to bring cases down to people waiting on the ground. From there team members carried cargo over to different areas on the ramp depending on which instrument it supported.

ATM team inspecting cargo

Airborne Topographic Mapper program manager Jim Yungel (left) and engineer Robert Harpold look over equipment recently unloaded from the NASA P-3. Credit: NASA / George Hale

Aircraft parts and tools would stay at the airport, while luggage, instruments and computer gear would go to the Kangerlussuaq Science Support Center, where the IceBridge team will spend the next few weeks.

Loading cargo on a truck

Equipment being loaded onto a truck for the trip to the Kangerlussuaq International Science Support center. Credit: NASA / George Hale

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