Žiemų tipai Baltijos jūros regione ir Lietuvoje

• Published in: Geografija
• Main Authors: Keršytė, Dovilė, Rimkus, Egidijus
• Format: Article in Journal/Newspaper
• Language: Lithuanian; English
• Published: 2014
• Subjects: Air temperature anomalies; Winter types; Number of days with snow cover; Snow depth; Baltic Sea region; NAO; AO; North Atlantic
• Online Access: http://vu.lvb.lt/VU:ELABAPDB4996160&prefLang=en_US

The temperature of the second type in the beginning and the end of the winter coincides with long-term average however air temperature during January and February is lower; the thickest snow cover (16 cm) lies in the third ten-day period of February. The third type can be mainly described by lower temperature than the long-term one; the thickest snow cover (20 cm) lies in the first ten-day period of March. Winter temperature of the fourth type varies a lot; the thickest snow cover (15 cm) forms in the first ten-day period of January and February. The air temperature of the fifth type exceeds the long-term one during the majority of the winter while snow cover reaches only 6 centimetres (in late February–early March). Relationships between winter types and circulation patterns over the North Atlantic were also investigated. During the highest NAO and AO Index values at the biggest anomalies of positive air temperature in the Baltic Sea region and higher than the long-term average air temperature in Lithuania were determined, whereas during the lowest NAO and AO Index values the opposite deviations were recorded. Closer relationships were determined in the second half of winter.