کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2069800 1078433 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The atmospheric circulation patterns during dry periods in Lithuania*
ترجمه فارسی عنوان
الگوهای گردش اتمسفر در دوره های خشک در لیتوانی *
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی

This paper reveals the atmospheric circulation patterns during dry periods in Lithuania. The research covers the period from 1961 to 2010. Atmospheric circulation features were analysed using the Hess and Brezowski classification of macro-circulation forms, NAO and AO indices, a 500 hPa geopotential height field and the Tibaldi-Molteni blocking index. Different phases of the dry period (developing, persisting and attenuation) were evaluated individually. Also, the regional differences of dry period formation were investigated. In general dry periods are determined by a decrease in zonal and an increase in meridional circulation forms as well as the atmospheric blocking process over the Baltic region longitudinal belt 0–20 days prior to the start of the dry period. An especially strong shift from general circulation patterns are observed during the developing phase of a dry period. Drought persistence in the Baltic region is almost always predetermined by strong anticyclonic circulation. Most drought development stages are associated with negative NAO/AO phases

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Oceanologia - Volume 56, Issue 2, 2014, Pages 223–239
نویسندگان
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