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1 Problemy Klimatologii Polarnej

1 2010

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Pierwsza polska wyprawa na Grenlandię 1937 roku. Wyniki pomiarów meteorologicznych Stanisława Siedleckiego i Alfreda Jahna

Józefczyk M., Korzystka M., Migała K., Piasecki J.

Problemy Klimatologii Polarnej

2010

nr 20

171-181

W opracowaniu przedstawiono wybrane wyniki (wraz z krótką interpretacją) pomiarów meteo-rologicznych przeprowadzonych przez S. Siedleckiego i A. Jahna w czasie pierwszej polskiej wyprawy naukowej na Grenlandię w 1937 roku. Słowa kluczowe: wyniki pomiarów meteorologicznych, Grenlandia 1937.

The paper presents unpublished results of meteorological measurements, which were carried out during the first Polish scientific expedition to Western Greenland in the year 1937. All the materials have been compiled as a graphs and diagrams. The archival daily maps of atmospheric pressure distribution for the northern hemisphere (NCAR Daily Northern Hemisphere SLP grids; 1937) were also used, on the basis of which a short interpretation of the collected materials was made. According to the authors, the main factor influenced the weather conditions and local climate characteristics of the Polonia Glacier and Arfersiorfik Fiord area in the 1937 summer season was the passage of pressure lows through the Davis Strait and Baffin Sea area. When the favourable barometric conditions occurred in the region, the foehn effect was formed on the orographical barrier around the fiord and above the glacier’s plateau. In the analyzed dataset the foehn periods were characterized, among others, by clearly visible positive anomalies of air temperature. In the remaining periods the air temperature, wind direction and wind velocity in the upper part of the fiord were influenced by cold air, which flew downward from the ice sheet, alongside the Polonia Glacier and Arfersiorfik Fiord axis.