Jökull


Jökull - 01.12.2007, Side 65

Jökull - 01.12.2007, Side 65
Recent variations in sea-ice extent off Iceland Figure 1. Simple sea-ice indices for Icelandic waters, 1900–2007. Thin line represents annual data and the thick line five year run- ning mean. – Hafís 1900–2007. Granna línan sýnir ársgildi en breiða línan hlaupandi fimm ára meðaltalsgildi. Figure 2. Northern Hemi- sphere Sea Ice Anomaly (Chapman, 2007) – Frávik í hafísútbreiðslu á norður- hveli miðað við meðaltal áranna 1978–2000. tellite sensors. The conditions in the Greenland Sea were not so extreme and the ice extent did not break the record from 2002 (Polar View, 2007). The Icelandic Marine Research Institute carries out quarter-yearly oceanographic expeditions on their research vessels, Bjarni Sæmundsson and Árni Frið- riksson. During the Spring cruise to the Denmark Strait, the conditions were close to average, with tem- perature being close to average but the salinity slightly below average (Marine Research Institute, 2007). JÖKULL No. 57 63
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Jökull

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