Frontier Scientists

Photo by Astronaut Jeff Williams, NASA Earth Observatory

The Frontier Scientists blog is for travelers, teachers, students, aspiring scientists, and anyone interested in scientific discovery in the Alaskan arctic.

Come here for videos, photos and summaries that put you in the front row for breaking scientific news in the Far North. Research by our team of Alaska-based scientists includes 10,000-year-old archeological finds, photos of active Cook Inlet volcanoes taken from the space station, climate change, Denali Park’s grizzlies, the nexus of Russian and native artistic traditions, and more.

Come along as scientists themselves are startled by the unexpected in field locations so remote researchers are often the first modern visitors to set foot in them.

Contact Liz O’Connell at liz@frontierscientists.com

Predicting the effect of anomalous sea ice loss and increasing sea surface temperatures on global storm systems - 4/15/2014 8:48 pm

The ground changing under our feet – Thermokarsts - 4/8/2014 2:24 pm

Snowy Owl Irruption - 4/2/2014 7:40 am

Tram Powered International Tundra Experiment - 3/25/2014 5:40 pm

Modeling shifting oceanscapes; a collective pursuit - 3/18/2014 6:29 pm

Iditarod sled dogs’ fat burning capabilities - 3/12/2014 11:04 pm

68 million ton landslide in Alaska: Mount La Perouse - 3/5/2014 7:34 pm

Feeling the heat? 2013 fourth warmest year on record - 2/27/2014 4:23 pm

International Polar Week and Climate Predictions in Ice

Ice cores loaded onto a plane in Antarctica: Photo by Heidi Roop (PolarTREC 2010), Courtesy of ARCUSIce cores loaded onto a plane in Antarctica: Photo by Heidi Roop (PolarTREC 2010), Courtesy of ARCUS

This week is International Polar Week, September 16 - 22, 2012. The event coincides with the Fall Equinox, when 12 hours of daylight will light every location on the planet. Polar Week aims to involve the public with research going on in the Artic and Antarctic through educational activities and engaging webinars. Do you know any students who would benefit from learning about polar science? You can find free activities and resources at the APECS Polar Week Page, including the Ice Core Art Project, talks with scientists, and other materials, activities and presentations. These approaches promote STEM (Sciences, Technology, Engineering & Mathematics) learning.

International Polar Week is supported by APECS Association of Polar Early Career Scientists, ARCUS Arctic Research Consortium of the U.S., with PolarTREC Teachers and Researchers Exploring and Collaborating, PEI Polar Educators International, IASC International Arctic Science Committee, and SCAR Scientific Committee on Antarctic Research.

Ice Core Art Project flakes, blobs and bubbles: Courtesy of ARCUSIce Core Art Project flakes, blobs and bubbles: Courtesy of ARCUS

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Get started with the Ice Core Art Project. The Flakes, Blobs and Bubbles Activity examines how glaciers form. Winter snowfall accumulates and is covered over by lighter summer snow, precipitation, wind-carried dust, pollen, and ash. The cycle repeats. Over the years, lower-lying layers are compressed. Snowflakes partially melt and are squeezed together, becoming granular ice and firn (blobs) and eventually glacial ice. The ice holds bubbles of air containing atmospheric gasses from years long past.

Flakes, Blobs and Bubbles aims to teach about glacier formation and inspire art. The project will collect images of glacier components and digitally compile them into mosaics representing ice cores. It's only one activity available from Polar Week resources; you can also create 'glacial goo' to simulate how a glacier moves or grow your own algae to explore methane hydrates and carbon sinks.

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Scientists drill ice cores - long cylinders of ice - out of glaciers in order to get a picture of what Earth's climate was like hundreds to hundreds of thousands of years ago. Ice cores contain layers of snowfall compressed into ice, as well as layers of pollen, volcanic ash, and dust (and more recently even debris from bomb testings). The detritus acts as proxies, indicating facts about climate information. The ice also holds bubbles of air that contain important information about the composition of the atmosphere in the past. Of especial importance to our modern-day dilemmas is studying concentrations of greenhouse gasses, because understanding past climate can help us gauge and predict future climate and more clearly grasp the drastic impact human activities are imposing on our modern-day climate.

An ice core showing a dark band - perhaps volcanic ash: Photo by Heidi Roop (PolarTREC 2010), Courtesy of ARCUSAn ice core showing a dark band - perhaps volcanic ash: Photo by Heidi Roop (PolarTREC 2010), Courtesy of ARCUS

Greenhouse gasses include Carbon dioxide (CO2) and Methane (CH4) which degrades into Carbon dioxide. Humans contribute to Carbon dioxide concentrations by burning fossil fuels: coal, oil, natural gas, and through other activities like deforestation. Trash breaking down in landfills, ruminant animals like cattle and sheep, and rice patties are human-influenced sources of Methane. Natural sources of Carbon dioxide and Methane like thawing or fire-scorched permafrost and plant matter decaying in warming oceans also release greenhouse gasses. Lessened sea-ice cover and retreating ice sheets lead to less sunlight being reflected away from the Earth. As temperatures and CO2 concentrations rise, each amplifies the other in a positive feedback loop.

We know that the earth experienced colder and warmer climate trends (glacial and interglacial periods) cyclically over the last 800,000 years; however, the abrupt increase in temperature and CO2 concentrations that has occurred since humans became capable of impacting global climate is both clear and disturbing.

"Antarctic ice cores show us that the concentration of CO2 was stable over the last millennium until the early 19th century. It then started to rise, and its concentration is now nearly 40% higher than it was before the industrial revolution... The fastest large natural increase [of CO2] measured in older ice cores is around 20ppmv (parts per million by volume) in 1000 years (a rate seen during Earth’s emergence from the last ice age around 12,000 years ago). CO2 concentration increased by the same amount, 20ppmv, in the last 11 years!" ~ Natural Environment Research Council

The scientists highlighted by Polar Week and by Frontier Scientists are bright minds and bold adventurers who brave polar cold to discover what is preserved in ice: information about atmospheric gasses, precipitation, temperature, and climate that can help all of us learn how to face Earth's very real climate future.

 

Reference: Science briefing - Ice cores and climate change from the British Antarctic Survey Natural Environment Research Council. http://www.antarctica.ac.uk/press/journalists/resources/science/icecorebriefing.php

Frontier Scientists showcases Arctic scientists' work. Learn about Climate Change, Professor Julie Brigham-Grette and her team drilling sediment cores at Lake El'Gygytgyn, Unmanned Aircraft Research, Computational Science + Modeling Arctic Waters, Grizzly Bears in Alaska's Denali National Park, Arctic Archaeology, and much more.

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