Research Highlights

Scientist of the Month: Syun-Ichi Akasofu

Mon, 03/03/2014 - 14:09

The namesake of the building where IARC is housed, Syun-Ichi Akasofu is further distinguished at the organization as its Founding Director. Akasofu also served as Director of UAF’s Geophysical Institute from 1986-1999, and has been recognized widely for his significant contributions to auroral and Arctic science, and for his very extensive publications and high citation records. He published his most recent paper in the Journal of Geophysical Research in December 2013. Read More

Scientist of the Month: Soumik Basu

Mon, 02/03/2014 - 08:07

As an IARC PhD candidate, Soumik Basu uses climate models to study changes and variability in extratropical storms in a warming climate. As he works to develop his own research and scholarship, Basu also benefits the IARC and UAF traditions of leading-edge science, especially in the areas of climate dynamics and projections. Read More

A New Digital Sea Ice Atlas – 160 Years of Historical Data at Your Fingertips

Wed, 01/29/2014 - 19:13

The first-ever digital atlas of historical sea ice concentration around Alaska has been released, allowing users to view and download data from 1850 to the present. Read More

American Geophysical Union 2013 Fall Meeting, IARC Oral and Poster Presentations

Wed, 12/18/2013 - 10:08

The International Arctic Research Center and University of Alaska Fairbanks had a large presence at this year's American Geophysical Union's Fall Meeting. IARC researchers presented 11 talks and 18 posters. A complete list of IARC oral and poster presentations is available below. Read More

Scientist of the Month: Bob Busey

Mon, 12/02/2013 - 14:31

As Research Engineer at IARC, Bob Busey plans and maintains much of the technical project design of IARC research. With expertise in electronics, remote telemetry, and hydrology, Busey has enabled new and innovative science at the organization that would not otherwise be possible. Working closely with IARC research faculty, Busey travels widely across the state of Alaska to install and service an array of field study equipment and technology. Read More

Arctic Methane Release Doubles Previous Estimates

Mon, 11/25/2013 - 16:23

A new study published this week in Nature Geoscience shows that large amounts of methane, more than twice the amount as previously estimated, are escaping the East Siberian Shelf in the Arctic Ocean. Read More

Scientist of the Month: Tom Heinrichs

Fri, 11/01/2013 - 15:58

As Director of the Geographic Information Network of Alaska (GINA) program at IARC, Tom Heinrichs oversees a wide array of cutting-edge tools, technologies, and relationships. Started in 2001 primarily to receive and process real-time satellite data, GINA has since grown in size and scope, currently administering projects and partnerships with groups ranging from NASA and NOAA to the National Parks Service (NPS) and the Alaska Energy Authority (AEA).

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Collaborative Arctic Expedition of IARC’s NABOS and Summer School Yields Excitement

Tue, 10/22/2013 - 10:09

IARC Nansen and Amundsen Basin Observational System (NABOS) researchers and IARC Summer School participants recently returned from a month-long expedition aboard the Russian research vessel Akademik Fedorov in the Arctic Ocean. The joint Arctic expedition, sponsored and coordinated by NABOS with funding from the National Science Foundation, took place in August and September. Read More

Scientist of the Month: Katrina Bennett

Wed, 10/02/2013 - 14:52

For her PhD work, Katrina Bennett has studied hydrology and hydroclimate processes and models at IARC since 2010. Under the guidance of IARC researchers Larry Hinzman, Jessica Cherry, and John Walsh, Bennett has conducted study of the changes to the hydroclimate caused by extreme weather, as well as surveys of historical hydroclimate and remote sensing data. Her work has been published in leading climate journals such as Hydrological Processes and Journal of Climate. Read More

The Second Issue of CHANGING ICE: A Newsletter of Cryosphere Research in Alaska

Mon, 09/23/2013 - 08:50

The second issue of Changing Ice has been published this month, a newsletter that gives biannual updates on the projects and discoveries of Alaska scientists engaged in cryosphere research. The newsletter is compiled by a team of researchers including IARC’s Alessio Gusmeroli, Sarah Trainor, and Hajo Eicken. Read More

Scientist of the Month: Alessio Gusmeroli

Tue, 09/03/2013 - 09:22

As a postdoctoral fellow at IARC, Alessio Gusmeroli studies glaciers, snow, and permafrost, with a strong focus on observations and field research. He contributes to the research activities of many organizations and projects, such as the Alaska Climate Science Center (AK CSC) research unit of IARC. Gusmeroli began his work at UAF as a postdoc in the Department of Geology and Geophysics in 2010, and has since led and published research on the application of geophysical methods for understanding ice sheets, glaciers, freshwater ice, snow, and permafrost. Read More

Scientist of the Month: Yu Liu

Thu, 08/01/2013 - 15:28

As a postdoctoral fellow, Yu Liu has studied at IARC since September 2012. With a strong research background in oceanography, Liu provides a broad perspective and significant contributions to IARC’s strong and growing capacity as a modeling and observational hub for the physics and biology of the world’s oceans. Read More

Innovative Tools for Arctic Sea Ice Research Launched

Mon, 07/22/2013 - 11:43

IARC researcher Jenny Hutchings and her team Alice Orlich and Tiffany Green have launched Ice Watch, a new program to help monitor Arctic sea ice. It is an open source forum to facilitate the collection and sharing of near-real time and historic in-situ observations and measurements. Read More

JICS Special Issue Published in the Journal Polar Science

Wed, 07/10/2013 - 09:32

Close partnerships among IARC and JAMSTEC (Japan Agency for Marine-Earth Science and Technology) researchers since 1998 have culminated in a recently published special issue of the Journal Polar Science. With an emphasis on synthesis and comprehensive approaches to understanding the Arctic as a system, IARC and JAMSTEC’s collaborations have joined together in the JAMSTEC-IARC Collaboration Study (JICS). This collaboration has enhanced our understanding of how individual components and processes interact to form a complex and dynamic Arctic system. Read More

Scientist of the Month: Vladimir Alexeev

Mon, 07/01/2013 - 14:14

For over a decade, Vladimir Alexeev has led advanced research and education initiatives at IARC, promoting a complex and diverse set of scientific approaches and priorities. Widely recognized and published across the pursuit and production of Global Climate Modeling (GCM), Alexeev also plays a leading role, along with John Walsh and Elena Sparrow, in IARC’s long-running Summer Schools series. Read More

Scientist of the Month: Elena Sparrow

Mon, 06/03/2013 - 13:48

As leader of IARC’s Education and Outreach programs, Elena Sparrow directs broad efforts to convene and communicate new and innovative science research and teaching methods. Sparrow has led a long and noteworthy career as a soil microbiologist, in addition to her key role in the development and growth of the Global Learning and Observations to Benefit the Environment (GLOBE) program and science education in Alaska. Read More

Scientist of the Month: John Walsh

Wed, 05/01/2013 - 11:02

John Walsh is distinguished at IARC as a Chief Scientist and a President’s Professor of Global Change. Over the last decade, Dr. Walsh has been central to IARC’s success and public profile, leading many of the organization’s strongest research and outreach efforts. In addition to extensive publications, he is the co-author of the textbook Severe and Hazardous Weather. Read More

SNAP and ACCAP contribute to Arctic planning report to the President of the United States

Mon, 04/22/2013 - 08:17

Managing for the Future in a Rapidly Changing Arctic, a major report recently issued by the Interagency Working Group on Coordination of Domestic Energy Development and Permitting in Alaska, highlights the need to coordinate and use the best available science to integrate cultural, environmental and economic factors in decision-making about development and conservation in the Arctic. Read More

GINA Debuts “Puffin Feeder” Image Aggregator and Webserver

Mon, 04/08/2013 - 16:08

The Geographic Information Network of Alaska (GINA), one of IARC’s research units, has launched Puffin Feeder. This is a website where anyone can access near real-time Arctic webcam, radar, GeoTIFF, and MODIS imagery. Read More

Scientist of the Month: Peter Bieniek

Mon, 04/01/2013 - 13:38

As a post-doctoral fellow studying climatology, Peter Bieniek’s work is focused on Alaska’s vast and complex climate, and he aims to improve the accuracy and reliability of climate analysis. Bieniek recently completed his PhD dissertation on climate variability across Alaska’s recent history; his work has been recognized by the World Climate Research Program Open Science Conference and published in the Journal of Climate. Read More

IARC Director Serves as Lead Editor for Journal Special Issue

Mon, 03/11/2013 - 08:54

IARC Director Larry Hinzman served as lead editor for the March 2013 special issue of Hydrogeology Journal (21:1), which focuses on the hydrogeology of cold regions. The present theme issue of the journal presents a collection of articles that reflect the progress in research on the hydrogeology of the former Soviet Union, United States and Canada, Scandinavia, China, Europe, and Antarctica. Read More

Scientist of the Month: Scott Rupp

Mon, 03/04/2013 - 14:34

Director of the Scenarios Network for Alaska & Arctic Planning (SNAP), principal investigator (PI) for the Alaska Climate Science Center (AK CSC), and co-PI for the Alaska Center for Climate Assessment and Policy (ACCAP), Dr. Scott Rupp has led important developments in forest ecology and ecological modeling as a faculty member at UAF since 2001. In 2012, IARC was pleased to welcome Dr. Rupp, along with SNAP, into its increasingly diverse and robust scientific community. Read More

SNAP Releases Integrated Ecosystem Model Data

Fri, 02/15/2013 - 17:33

IARC's research unit, the Scenarios Network for Alaska & Arctic Planning (SNAP), has released a new set of historical and projected research data developed for a broad scale model coupling project, the Integrated Ecosystem Model for Alaska and Northwest Canada (IEM). This data set differs from other SNAP data sets because it was developed to meet the specific requirements of the IEM, including a 1km spatial resolution, a consistent time series from 1901-2100, and additional variables such as radiation and vapor pressure. Read More

Changing Ice: A Newsletter of Cryosphere Research in Alaska

Fri, 02/08/2013 - 16:55

December 2012 marked the inaugural issue of Changing Ice: A Newsletter of Cryosphere Research in Alaska, a biannual newsletter with contributions from IARC researchers Sarah Trainor, Hajo Eicken, and Alessio Gusmeroli. Cryosphere changes in the Alaska region in the last decade have been dramatic. Widespread glacier retreat, reduction of summer sea ice, decreased snow season, thawing permafrost, and thinner and less durable freshwater ice are among the clearest signs of worldwide climate change. Read More

Scientist of the Month: Sarah Trainor

Fri, 02/01/2013 - 16:23

Dr. Sarah Trainor was welcomed to IARC in 2012, along with the Alaska Center for Climate Assessment and Policy (ACCAP) research unit. As ACCAP Director, Trainor oversees the organization's mission to improve links between climate science and society, through better communication of science research and strong relationships with stakeholders. Trainor has been published and recognized widely for her work, which includes project support from the US Department of the Interior, the Joint Fire Sciences Program, and the National Oceanic and Atmospheric Administration (NOAA). Read More

Arctic Report Card: Update for 2012

Thu, 01/24/2013 - 16:29

IARC researchers John Walsh, Natalia Shakhova, and Igor Semiletov contributed to the Arctic Report Card: Update for 2012, "a timely and peer-reviewed source for clear, reliable and concise environmental information on the current state of the Arctic relative to historical records. The Report Card is intended for a wide audience, including scientists, teachers, students, decision-makers and the general public interested in the Arctic environment and science." The Arctic Report Card has been published annually on the web since 2006. Read More

United States National Climate Assessment: Alaska Technical Regional Report

Thu, 01/17/2013 - 16:27

The U.S. Geological Survey (USGS) has released The United States National Climate Assessment: Alaska Technical Regional Report, one of eight regional reports that will provide input to the 2013 National Climate Assessment. This report details the status of climate change research in Alaska, including summaries of past and present findings, and an overview of current methods for predicting future climate change. Read More

NRC Report Explores Challenges/Strategies in Seasonal to Decadal Sea Ice Prediction

Wed, 12/26/2012 - 23:22

The National Research Council (NRC)'s report, "Seasonal-to-Decadal Predictions of Arctic Sea Ice: Challenges and Strategies" was recently released. The report explores major challenges in sea ice prediction and identifies methods, observations, and technologies that might advance capabilities to predict the extent of sea ice over seasonal to decadal timescales. The report was written by the Committee on the Future of Arctic Sea Ice Research in Support of Seasonal-to-Decadal Prediction, co-chaired by IARC's Chief Scientist John Walsh. Read More

American Geophysical Union 2012 Fall Meeting, IARC Posters and Talks

Mon, 12/17/2012 - 16:19

The International Arctic Research Center and University of Alaska Fairbanks had a large presence at this year's American Geophysical Union's Fall Meeting. IARC researchers presented seven talks and 24 posters. Read the full story for a complete list of talks and posters, and a video from the conference. Read More

Scientist of the Month: Taro Nakai

Wed, 12/05/2012 - 16:44

As a post-doctoral fellow at IARC since 2009, Taro Nakai studies plant micrometeorology (forest climate and gas exchange at very small scales) and the methods available to scientists in the field. Nakai’s recent publications include papers on carbon dioxide flux measurement, improving and refining micrometeorology methods of measurement and analysis, and the evapotranspiration (gas exchange) that occurs in the black spruce forests of interior Alaska. Read More

Scientist of the Month: Bob Bolton

Fri, 11/02/2012 - 15:13

After formative time in Fairbanks and years of education in California, Bob Bolton has spent the last decade studying Arctic hydrology at IARC. During this time, Bolton has designed multiple research projects, leading to important insights and contributions to boreal forest hydrology, and terrestrial/atmospheric water exchange or “flux.” Read More

Scientist of the Month: Yongwon Kim

Mon, 10/01/2012 - 10:39

Since 1999, Yongwon Kim has worked to establish new and important research on the topics of carbon and nitrogen cycling, particularly in the terrestrial ecosystems in the Arctic. Kim has published extensively in this field, and he continues to promote awareness amongst general and scientific communities about the important dynamics of terrestrial carbon and methane. Read More

Scientist of the Month: Jenny Hutchings

Thu, 09/06/2012 - 14:06

Since 2001, Dr. Jenny Hutchings has conducted research at IARC with a strong and broad focus on sea ice, including modeling sea ice dynamics and variability and studying interaction between sea ice and climate. Dr. Hutchings’ recent work has received support from groups including the National Science Foundation and the Department of Energy, and she currently participates in the Arctic Observing Network and collaborates with the International Arctic Buoy Programme. Read More

Imnavait Creek Snowmelt Time-Lapse Video

Thu, 08/30/2012 - 15:48

In May 2012, IARC's Simon Filhol and Alessio Gusmeroli, together with a few other researchers of the SnowNet project, visited Imnavail Creek to monitor the snowmelt. Imnavait is located on the foothills of the Brooks Range, on the North Slope of Alaska. The creek is also widely used by researchers like biologists, hydrologists, ecologists to perform studies on climate change and Arctic ecosystems. In addition to the long-term study of snowmelt with daily snow-depth probing and snow density measurements, time-lapse cameras were set up around the creek to capture photos of the snow melting. Read More

Enhancement of Poleward Atmospheric Moisture Transport Contributes to Increased Eurasian Arctic River Discharges

Tue, 08/07/2012 - 14:21

An article entitled “Enhanced poleward moisture transport and amplified northern high-latitude wetting trend” was recently published on Nature Climate Change's website. Nature Climate Change is a monthly journal “dedicated to publishing the most significant and cutting-edge research on the impacts of global climate change and its implications for the economy, policy and the world at large." This article is a product of collaborative work, with IARC’s Xiangdong Zhang as a leading author and Igor Polyakov as one of the co-authors. Read More

Scientist of the Month: Georgina Gibson

Thu, 08/02/2012 - 13:00

A Research Assistant Professor at UAF and IARC since 2009, Georgina Gibson studied Marine Biology and Oceanography at the University of Wales, Bangor and received her PhD in Biological Oceanography from UAF in 2004. Dr. Gibson’s work uses computational modeling to understand and predict changes in marine ecosystems, particularly in organisms at lower trophic levels. Gibson maintains an active service profile as a judge of science competitions at the local and national levels. Read More

Scientist of the Month: Meibing Jin

Fri, 07/06/2012 - 12:43

Since 2004, Meibing Jin has studied physical and biochemical oceanography at IARC, with a focus on ocean, sea ice, and ecosystem modeling. Jin has been instrumental in a number of recent studies and workshops organized and funded by a variety of major public and private organizations, including the National Science Foundation Climate Process Team, the North Pacific Research Board (NPRB), the U.S. Department of Energy, the Mineral Management Service (MMS), and Exxon Mobil. Read More

Scientist of the Month: Andrey Pnyushkov

Wed, 06/06/2012 - 15:03

As a post-doctoral fellow at IARC, Andrey Pnyushkov studies mesoscale processes in the Eurasian Basin of the Arctic Ocean, in an effort to quantify interactions between physical processes of the ocean, sea ice, and the atmosphere. In the face of recent changes to the region’s climate dynamics, Dr. Pnyushkov has worked to identify the properties of tidal currents and their relation to changes in sea ice cover. Read More

Scientist of the Month: Jessica Cherry

Mon, 05/07/2012 - 16:38

Since 2006, Dr. Jessica Cherry has conducted research at IARC relating to Arctic hydrology, climate, snow physics, permafrost, and the socio-economic impact of environmental change. In the past ten years, Cherry has received awards and support for her research from NASA, NSF, DOE, NOAA, BLM, USFWS, and private foundations. Read More

Lessons and Legacies of International Polar Year 2007-2008

Wed, 04/25/2012 - 15:53

A new report, Lessons and Legacies of International Polar Year 2007-2008, has been published under the guidance of the Polar Research Board (PRB), with IARC Director Larry Hinzman as a contributing author. International Polar Year 2007-2008 (IPY) was an intense, coordinated field campaign of observations, research, and analysis. Read More

Scientist of the Month: Jessie Cable

Fri, 03/09/2012 - 17:21

Dr. Jessie Cable, one of the newest members of IARC’s science faculty, conducts a wide range of research into the dynamics of the Arctic and boreal water cycles. Cable studied ecology in the southwestern United States before becoming interested in the unique conditions that face plants and water in Alaska. Read More

Scientist of the Month: Igor Semiletov

Thu, 02/09/2012 - 10:59

Dr. Igor Semiletov joined the International Arctic Research Center ten years ago, in 2001, and has since established himself as a leading researcher on the subject of Chemical Oceanography in the Arctic Siberian Seas. He has published extensively on the phenomena of Arctic offshore waters and greenhouse gases, much of this study resulting from his ongoing series of research expeditions throughout the Pacific-Siberian sector of the Arctic Ocean. Read More

Measuring CO2 Variance from Interior Alaska Forest

Thu, 12/15/2011 - 15:03

In this video, IARC researcher Yongwon Kim shows the equipment he uses to automatically measure CO2, one of the major greenhouse gases. He uses this data to determine the daily variance of CO2 flux in a black spruce forest in interior Alaska in hopes to predict future changes in CO2.

Beaufort Sea Cruise 2011

Tue, 07/26/2011 - 14:41

Follow IARC graduate student Alice Orlich's journey aboard the CCGS Louis S. St-Laurent on the 2011 Beaufort Sea cruise, including photos, satellite images, and ice observations. Read More

Climatological Oceanographic Atlas of the Bering Sea

Wed, 07/06/2011 - 12:21

IARC researcher Gleb Panteleev has been working with Vladimir Luchin, Phyllis Stabeno, Dmitri Nechaev, and Takashi Kikuchi to develop the Climatological Oceanographic Atlas of the Bering Sea. The atlas includes seasonal and mean climatological distribution of temperature, salinity, velocity and sea surface height in the Bering Sea. Read More

International Study of Arctic Change (ISAC) Science Plan

Wed, 06/01/2011 - 13:18

The intent of the ISAC Science Plan is to outline an open-ended international research program and a framework for comprehensive study of Arctic environmental change in all its dimensions. ISAC builds upon existing efforts to further our understanding of past, present, and expected Arctic change to carry over new insights into the public and the decision-making arenas. Read More

East Siberian Methane Leak Research Highlighted in NSF Strategic Plan

Fri, 05/27/2011 - 13:47

Discoveries about the magnitude of methane leaking from the East Siberian Arctic Shelf were highlighted in the National Science Foundation's Strategic Plan for FY 2011-2016. Read More

A Year-Round Flux Observation at an Area Burned by Wildfire in Interior Alaska

Wed, 05/04/2011 - 15:36

Wildfire is a major disturbance in boreal forests. It attracts research attention not only because it instantaneously releases a large amount of carbon into the atmosphere, but also because it significantly alters hydrology and carbon exchange at the land surface over a decadal timescale during the vegetation succession after wildfire. Read More

Reduction of Arctic Sea-Ice Amplifies Tides

Tue, 03/29/2011 - 14:25

Sea ice in high-latitude regions is a complicating factor in tidal dynamics. In this project, IARC researcher Andrey Pnyushkov and collaborators examined a year-long (2004–05) record of current observations from a mooring deployed at the continental slope of the Laptev Sea (78°26′N, 125°40′E). Read More

Impacts of Climate Change and Variability on Hydropower in Southeast Alaska: Planning for a Robust Energy Future

Tue, 12/07/2010 - 16:26

The useful lifespan of hydroelectric power infrastructure is 50 years or more; this is long enough that long-term climate change and shorter-term climate variability should be considered when planning new facilities and maintaining existing ones. This study examines observed historical climate variability in Southeast, Alaska, where several new and expanded hydropower facilities are proposed. Read More

A Science Plan for Regional Arctic System Modeling

Tue, 10/05/2010 - 00:00

At a time when the Arctic is experiencing changes never before seen in historic times, an accelerated interest in regional "Arctic System Modeling" is helping to achieve a comprehensive understanding of physical, biogeochemical, and societal interactions in the high north. Toward that goal, IARC has recently released a science plan developed for such a model. Read More

International Science Group on CCGS Louis S. St-Laurent Expedition to Beaufort Sea

Fri, 10/01/2010 - 00:00

Follow IARC graduate students Alice Orlich and Heidi Isernhagen as they report on their Beaufort Sea ice observations aboard the CCGS Louis S. St-Laurent, joined by several other international research groups. Read More

Small Village May Model Future Alaska

Thu, 04/29/2010 - 00:00

KOLIGANEK - This village in southwest Alaska, so small it doesn't have its own zip code, is of great interest to Kenji Yoshikawa. It once had permafrost, but he's not finding it now. Read More

Methane Hydrate Feedbacks Chapter in WWF International Arctic Programme Report

Wed, 11/04/2009 - 13:00

In a recent report produced by the WWF International Arctic Programme, IARC scientists Natalia Shakhova and Igor Semiletov published key findings of their research on the powerful greenhouse effects of methane released into the atmosphere from destabilized ocean sediments and permafrost. Read More

Notes from the field: Maintaining Observational Networks in Beringia

Wed, 10/28/2009 - 12:00

Long-term maintenance of remote weather stations can be one of the more challenging aspects of climate research. Read More

Effects of Forest Fire on Permafrost

Wed, 04/29/2009 - 00:00

In late June, 2004, a wildfire swept across the Poker Flat Research Range north of Fairbanks. The Boundary Fire, as it became known, burned so intensely that it destroyed the ground surface organic layer, a 30-centimeter-thick mixture of roots, leaves, lichens, and moss which normally acts as an important insulator protecting the frozen ground below.  Read More

Measuring CO2 Emission In an Alaska Black Spruce Forest

Mon, 03/09/2009 - 12:00

Continuous monitoring of CO2 emissions in the boreal forest helps researchers understand greenhouse gas cycles within the terrestrial ecosystem. Read More

Multidecadal Variability In The Arctic and North Atlantic Climate System

Wed, 01/07/2009 - 16:06

IARC-led study of multidecadal variability in the Arctic and North Atlantic climate system is summarized on a new web page. Read More

Scientists find increased methane levels in Arctic Ocean

Mon, 12/15/2008 - 01:00

Fairbanks, Alaska—A team led by International Arctic Research Center scientist Igor Semiletov has found data to suggest that the carbon pool beneath the Arctic Ocean is leaking. Read More

Expeditions In Research - NABOS In the Laptev and East Siberian Seas

Thu, 10/02/2008 - 00:00

The Russian Icebreaker Kapitan Dranitsyn will start her cruise in Kirkenes, Norway on October 1st at 8:00am. In Kirkenes, she will upload scientific team and equipment and will sail into the Arctic Ocean for her 30 day voyage, covering vast areas of the polar basin. Read More

NABOS Mooring Recovery Hampered By Sea Ice Near Svalbard

Sat, 09/20/2008 - 00:00

Sea ice has prevented Phase I of the NABOS 2008 expedition from recovering mooring... read more on Expeditions in ResearchRead More

International Siberian Shelf Study 2008

Mon, 09/15/2008 - 00:00

Check out dispatches from the East Siberian and Laptev Sea researchers as they study methane emissions in the Russian Arctic Ocean.  Read More

Northern Alaska Connections III: Winter observations of in-situ snow depth, 2005-2008

Tue, 04/29/2008 - 12:00

It is very difficult to measure snow cover in the Arctic from satellite data. However, understanding snow melt and coverage in the Arctic is of great importance for climate research and global warming studies in the Arctic. Read More

Northern Alaska Connections II: Soil Moisture Measurement and Modeling

Thu, 01/03/2008 - 13:00

The Northern Alaska Coastal System and North Slope regions have extensive wetlands, despite near desert precipitation levels. This is an energy-limited system, where evapotranspiration is highly dependent on incoming solar radiation and relatively impermeable permafrost reduces sub-surface water storage capacity in the flat landscape. Read More

Northern Alaska Connections I: Measuring Solid Precipitation

Fri, 11/16/2007 - 13:00
In climate physics, snow is influential due to its high-reflectivity, ground-insulating properties, and contribution to surface hydrology. Ground-based measurements of snow accumulation are needed both to improve understanding of surface-atmosphere exchange processes and to provide a testing mechanism for remote-sensing techniques.

Application of the variational data-assimilation technique for the study of the Bering Sea: Climatological studies including hindcast and forecast of the local circulation

Wed, 02/15/2006 - 13:00

The Bering Sea off the west coast of Alaska controls the heat and freshwater exchange between the North Pacific Ocean and the Arctic Ocean. This exchange is important to the balance of the world’s ocean circulation... Read More

Methane in the Arctic and its Role in Global Climate Change

Thu, 02/03/2005 - 13:00

It is estimated that northern ecosystems have accumulated 25-33% of the world's soil carbon.   In a warming climate, carbon and methane trapped in permafrost have a high potential for release into the atmosphere through chemical and biological processes such as thawing. Read More

Accomplishments of the First U.S.-Russia cruise in the East-Siberian Sea onboard the Hydrographic Vessel Ivan Kireev

Fri, 01/30/2004 - 11:26

Any attempt to understand the effects of the Arctic Ocean on global change or the effects of global change on the Arctic Ocean requires thorough understanding of coastal processes. The major transport of fresh water and dissolved and solid materials into the Arctic Ocean is determined by riverine discharges from Eurasia and North America, and by coastal erosion (Codispoti et al., 1990; Grebmeir and Whitledge,1996; Boucsein et al., 2000; Semiletov et al., 2000). Read More