کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5786838 1640780 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ice core and climate reanalysis analogs to predict Antarctic and Southern Hemisphere climate changes
ترجمه فارسی عنوان
آنالوگهای هسته یخ و آب و هوا برای تجزیه و تحلیل قطب جنوب و تغییرات اقلیمی نیمکره جنوبی
کلمات کلیدی
تغییر آب و هوا، آنالوگ، هسته یخ، بازخورد آب و هوا، قطب جنوب، نیمکره جنوبی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
A primary goal of the SCAR (Scientific Committee for Antarctic Research) initiated AntClim21 (Antarctic Climate in the 21st Century) Scientific Research Programme is to develop analogs for understanding past, present and future climates for the Antarctic and Southern Hemisphere. In this contribution to AntClim21 we provide a framework for achieving this goal that includes: a description of basic climate parameters; comparison of existing climate reanalyses; and ice core sodium records as proxies for the frequencies of marine air mass intrusion spanning the past ∼2000 years. The resulting analog examples include: natural variability, a continuation of the current trend in Antarctic and Southern Ocean climate characterized by some regions of warming and some cooling at the surface of the Southern Ocean, Antarctic ozone healing, a generally warming climate and separate increases in the meridional and zonal winds. We emphasize changes in atmospheric circulation because the atmosphere rapidly transports heat, moisture, momentum, and pollutants, throughout the middle to high latitudes. In addition, atmospheric circulation interacts with temporal variations (synoptic to monthly scales, inter-annual, decadal, etc.) of sea ice extent and concentration. We also investigate associations between Antarctic atmospheric circulation features, notably the Amundsen Sea Low (ASL), and primary climate teleconnections including the SAM (Southern Annular Mode), ENSO (El Nîno Southern Oscillation), the Pacific Decadal Oscillation (PDO), the AMO (Atlantic Multidecadal Oscillation), and solar irradiance variations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary Science Reviews - Volume 155, 1 January 2017, Pages 50-66
نویسندگان
, , , , , , , , , , , , , , ,