: Paleoclimatología: polar front

natural phenomenon > atmospherical phenomenon > polar front

polar front

In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell around the 60° latitude in each hemisphere. At this boundary a sharp gradient in temperature occurs between these two air masses, each at very different temperatures. The polar front arises as a result of cold polar air meeting warm tropical air. It is a stationary front as the air masses are not moving against each other. In oceanography, the transition zone between the East Greenland Current and the Irminger Current is defined as the Polar Front, and its position varies on short and long time scales (Malmberg 1969, 1985; Ruddiman & McIntyre 1981; Andresen et al. 2005). In addition, the boundary between the Atlantic and the Arctic waters in the Barents Sea, also termed the Polar Front, is characterised by sharp hydrographic gradients, which favour high biological productivity. The Polar Front corresponds largely to a mean winter limit of sea ice, which is controlled by Atlantic water inﬂow, in contrast to the air-temperature controlled summer ice margin. (Adapted from: S. Principato & J. F. Lee (2014). Boreas, 43 (4). and E. VORONINA et al. (2001). Journal of Quaternary Science, 16 (7), 717-726. and https://en.wikipedia.org/wiki/Polar_front)

http://data.loterre.fr/ark:/67375/QX8-0LG3CML1-H

RDF/XML TURTLE JSON-LD

Loterre