Changing sea ice conditions and marine transportation activity in Canadian Arctic waters between 1990 and 2012

Declining sea ice area in the Canadian Arctic has gained significant attention with respect to the prospect of increased shipping activities. To investigate relationships between recent declines in sea ice area with Arctic maritime activity, trend and correlation analysis was performed on sea ice area data for total, first-year ice (FYI), and multi-year ice (MYI), and on a comprehensive shipping dataset of observed vessel transits through the Vessel Traffic Reporting Arctic Canada Traffic Zone (NORDREG zone) from 1990 to 2012. Links to surface air temperature (SAT) and the satellite derived melt season length were also investigated. Between 1990 and 2012, statistically significant increases in vessel traffic were observed within the NORDREG zone on monthly and annual time-scales coincident with declines in sea ice area (FYI, MYI, and total ice) during the shipping season and on a monthly basis. Similarly, the NORDREG zone is experiencing increased shoulder season shipping activity, alongside an increasing melt season length and warming surface air temperatures (SAT). Despite these trends, only weak correlations between the variables were identified, although a step increase in shipping activity is apparent following the former summer sea ice extent minimum in 2007. Other non-environmental factors have also likely contributed to the observed increase in Arctic shipping activity within the Canadian Arctic, such as tourism demand, community re-supply needs, and resource exploration trends.

[1]  Malcolm Davidson,et al.  CryoSat‐2 estimates of Arctic sea ice thickness and volume , 2013 .

[2]  Marika M. Holland,et al.  Perspectives on the Arctic's Shrinking Sea-Ice Cover , 2007, Science.

[3]  T. Agnew,et al.  The use of operational ice charts for evaluating passive microwave ice concentration data , 2003 .

[4]  C. Duguay,et al.  Sea ice conditions and melt season duration variability within the Canadian Arctic Archipelago: 1979–2008 , 2009 .

[5]  Muyin Wang,et al.  A sea ice free summer Arctic within 30 years? , 2009 .

[6]  J. Kay,et al.  The Arctic’s rapidly shrinking sea ice cover: a research synthesis , 2012, Climatic Change.

[7]  Douglas A. Wolfe,et al.  Nonparametric Statistical Methods , 1973 .

[8]  S. Rodionov.  A sequential algorithm for testing climate regime shifts , 2004 .

[9]  Laurence C. Smith,et al.  New Trans-Arctic shipping routes navigable by midcentury , 2013, Proceedings of the National Academy of Sciences.

[10]  E. Stewart,et al.  Climate change, marine tourism, and sustainability in the Canadian Arctic: contributions from systems and complexity approaches. , 2007 .

[11]  Josefino C. Comiso,et al.  Large Decadal Decline of the Arctic Multiyear Ice Cover , 2012 .

[12]  Laurence C. Smith,et al.  Divergent long-term trajectories of human access to the Arctic , 2011 .

[13]  W. Collins,et al.  The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation , 2001 .

[14]  Alexander Sen Gupta,et al.  Variability and Change in the Ocean , 2012 .

[15]  Ronald H. Randles,et al.  A test for correlation based on Kendall's tau , 1988 .

[16]  Jinlun Zhang,et al.  The impact of an intense summer cyclone on 2012 Arctic sea ice retreat , 2013 .

[17]  P. Kushner,et al.  Variability and change in the Canadian cryosphere , 2012, Climatic Change.

[18]  Chris Derksen,et al.  Recent changes in the exchange of sea ice between the Arctic Ocean and the Canadian Arctic Archipelago , 2013 .

[19]  Laurence C. Smith,et al.  Projected 21st-century changes to Arctic marine access , 2013, Climatic Change.

[20]  Vladimir A. Alexeev,et al.  Role of Polar Amplification in Long-Term Surface Air Temperature Variations and Modern Arctic Warming , 2010 .

[21]  Julienne C. Stroeve,et al.  Arctic Sea Ice Extent Plummets in 2007 , 2008 .

[22]  W. Emery,et al.  Distribution and trends in Arctic sea ice age through spring 2011 , 2011 .

[23]  Xuebin Zhang,et al.  Temperature and precipitation trends in Canada during the 20th century , 2000, Data, Models and Analysis.

[24]  Sébastien Pelletier,et al.  Polar super seaways? Maritime transport in the Arctic: an analysis of shipowners’ intentions , 2011 .

[25]  John J. Yackel,et al.  Trends and variability in summer sea ice cover in the Canadian Arctic based on the Canadian Ice Service Digital Archive , 2010 .

[26]  Robert P. Garrett,et al.  Sea ice thickness distribution in the Arctic Ocean , 1987 .

[27]  G. Flato,et al.  Sea Ice in the Canadian Arctic Archipelago: Modeling the Past (1950–2004) and the Future (2041–60) , 2009 .

[28]  J. Stroeve,et al.  Recent changes in Arctic sea ice melt onset, freezeup, and melt season length , 2009 .

[29]  H. Melling.  Sea ice of the northern Canadian Arctic Archipelago , 2002 .