dc.contributor.author | Pavlov, Alexey K. | eng |
dc.contributor.author | Tverberg, Vigdis | eng |
dc.contributor.author | Ivanov, Boris | eng |
dc.contributor.author | Nilsen, Frank | eng |
dc.contributor.author | Falk-Petersen, Stig | eng |
dc.contributor.author | Granskog, Mats A. | eng |
dc.date.accessioned | 2015-06-25T08:54:33Z | |
dc.date.available | 2015-06-25T08:54:33Z | |
dc.date.issued | 2013-05-06 | |
dc.identifier.issn | 0800-0395 | en_US |
dc.identifier.uri | https://hdl.handle.net/1956/10055 | |
dc.description.abstract | The recently observed warming of west Spitsbergen fjords has led to anomalous sea-ice conditions and has implications for the marine ecosystem. We investigated long-term trends of maximum temperature of Atlantic Water (AW) in two west Spitsbergen fjords. The data set is composed of more than 400 oceanographic stations for Isfjorden and Grønfjorden (78.1°N), spanning from 1876 to 2009. Trends throughout the last century (1912–2009) indicate an increase of 1.9°C and 2.1°C in the maximum temperature during autumn for Isfjorden and Grønfjorden, respectively. A recent warming event in the beginning of the 21st century is found to be more than 1°C higher than the second warmest period in the time series. Mean sea-level pressure (MSLP) data from ERA-40 and ERA-Interim data sets produced by the European Centre for Medium-Range Weather Forecasts and mean temperature in the core of the West Spitsbergen Current (WSC) at the Sørkapp Section along 76.3°N were used to explain the variability of the maximum temperature. A correlation analysis confirmed previous findings, showing that variability in the oceanography of the fjords can be explained mainly by two external factors: AW temperature variability in the WSC and regional patterns of the wind stress field. To take both processes into consideration, a multiple regression model accounting for temperature in the WSC core and MSLP over the area was developed. The predicted time series shows a reasonable agreement with observed maxima temperature in Isfjorden for the period 1977–2009 (N=24), with a statistically significant multiple correlation coefficient of 0.60 (R2=0.36) at P<0.05. | en_US |
dc.language.iso | eng | eng |
dc.publisher | Norwegian Polar Institute | en_US |
dc.publisher | Co-Action Publishing | en_US |
dc.rights | Copyright 2013 A.K. Pavlov et al. | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/3.0/ | eng |
dc.subject | Temperature | eng |
dc.subject | West Spitsbergen Current | eng |
dc.subject | Atlantic water | eng |
dc.subject | ERA reanalysis | eng |
dc.subject | warming | eng |
dc.subject | Svalbard | eng |
dc.title | Warming of Atlantic Water in two west Spitsbergen fjords over the last century (1912-2009) | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.date.updated | 2015-06-25T08:49:28Z | |
dc.description.version | publishedVersion | en_US |
dc.source.articlenumber | 11206 | |
dc.identifier.doi | https://doi.org/10.3402/polar.v32i0.11206 | |
dc.identifier.cristin | 1039373 | |
dc.source.journal | Polar Research | |
dc.source.40 | 32 | |