کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6348416 | 1621689 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A pollen-based reconstruction of summer temperature in central North America and implications for circulation patterns during medieval times
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A pollen-based reconstruction of summer temperature in central North America and implications for circulation patterns during medieval times A pollen-based reconstruction of summer temperature in central North America and implications for circulation patterns during medieval times](/preview/png/6348416.png)
چکیده انگلیسی
Analyses of circulation features associated with the warmest summers in the recent climate record suggest a prevalence of continental ridging accompanied by generally dry conditions during these warm summers in the Midwest. Drought reconstruction using the Palmer Drought Severity Index (PDSI) and tree-ring records as predictors also yield relatively dry conditions in medieval times for the central US. As reported in a number of recent studies, possible forcing mechanisms include La Niña-like conditions in the equatorial Pacific and warmer than average waters in the tropical Indo-western Pacific Ocean possibly coupled to a positive mode of the AMO/NAO North Atlantic circulation pattern.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Global and Planetary Change - Volumes 84â85, March 2012, Pages 66-74
Journal: Global and Planetary Change - Volumes 84â85, March 2012, Pages 66-74
نویسندگان
Eugene R. Wahl, Henry F. Diaz, Christian Ohlwein,