Research Highlights

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