کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487682 1523598 2016 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of Middle Range Energy Electrons on atmospheric chemistry and regional climate
ترجمه فارسی عنوان
نفوذ الکترونی انرژی محدوده در شیمی جو زمین و آب و هوای منطقه
کلمات کلیدی
الکترونهای انرژی متوسط، مزوسفر، ازن، شیمی جوی، آب و هوا،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
We investigate the influence of Middle Range Energy Electrons (MEE; typically 30-300 keV) precipitation on the atmosphere using the SOCOL3-MPIOM chemistry-climate model with coupled ocean. Model simulations cover the 2002-2010 period for which ionization rates from the AIMOS dataset and atmospheric composition observations from MIPAS are available. Results show that during geomagnetically active periods MEE significantly increase the amount of NOy and HOx in the polar winter mesosphere, in addition to other particles and sources, resulting in local ozone decreases of up to 35%. These changes are followed by an intensification of the polar night jet, as well as mesospheric warming and stratospheric cooling. The contribution of MEE also substantially enhances the difference in the ozone anomalies between geomagnetically active and quiet periods. Comparison with MIPAS NOy observations indicates that the additional source of NOy from MEE improves the model results, however substantial underestimation above 50 km remains and requires better treatment of the NOy source from the thermosphere. A surface air temperature response is detected in several regions, with the most pronounced warming occurring in the Antarctic during austral winter. Surface warming of up to 2 K is also seen over continental Asia during boreal winter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 149, November 2016, Pages 180-190
نویسندگان
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