Summary
The mesoclimate of Lake Minchumina (65 km2) located in the subarctic continental climate of Interior Alaska was investigated during the summer and autumn of 1979. Five meteorological stations were placed at the east and west shore of the lake as well as at different distances away from the lake. With the help of these stations the lake effects like lake-, land-breeze, local warming, and suppression of extreme temperatures are discussed and compared to the lake effects observed in more temperate climatic regions. Furthermore, the heat budget of the lake was calculated. The net radiation was less positive when compared to studies at lower latitudes. Further, the large sensible and latent heat losses in fall were balanced mostly by the heat released from the body of water, the heat having been stored over the summer.
Zusammenfassung
Im Sommer und Herbst 1979 wurde das Mikroklima des im subarktischen kontinentalen Klima des Inneren von Alaska gelegenen Lake Minchumina (65 km2) untersucht. Es wurden fünf meteorologische Stationen auf der West- und Ostküste des Sees und auch in verschiedenen Abständen vom See eingerichtet. Gestützt auf die Beobachtungen dieser Stationen wurden die Auswirkungen des Sees auf die Bildung von Land-See-Wind, lokale Erwärmung und Unterdrückung extremer Temperaturen besprochen und mit den Auswirkungen von Seen in gemäßigten Klimagebieten verglichen. Ferner wurde der Wärmehaushalt des Sees berechnet. Die Strahlungsbilanz war weniger positiv als in niedrigeren Breiten; auch der große Verlust an sensibler und latenter Wärme im Herbst wurde größtenteils durch die aus dem Wasserkörper kommende Wärme, die während des Sommers gespeichert worden ist, ausgeglichen.
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Kodama, Y., Eaton, F. & Wendler, G. The influence of Lake Minchumina, Interior Alaska, on its surroundings. Arch. Met. Geoph. Biocl., Ser. B 33, 199–218 (1983). https://doi.org/10.1007/BF02275094
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DOI: https://doi.org/10.1007/BF02275094