کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5754846 1621201 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unusual enhancement in tropospheric and surface ozone due to orography induced gravity waves
ترجمه فارسی عنوان
افزایش غیرعادی در اوزون تروپوسفر و سطح با توجه به امواج گرانشی ناشی از ارتجاع
کلمات کلیدی
ازن، تروپوپوز، امواج اوروگرافی، انتشار
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات کامپیوتر در علوم زمین
چکیده انگلیسی
In this study, we investigate the causative processes responsible for the observed enhancement in the tropospheric and surface ozone during December 09-11, 2008 orography induced gravity wave event over Himalayan region. The analysis is done using surface ozone measurements and satellite datasets from Atmospheric Infrared Sounder/Advanced Microwave Sounding Unit-A (AIRS/AMSU-A), COSMIC, TES and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO). Observations depict a two fold increase in surface and tropospheric ozone during the event as compared to normal days in both AIRS and TES ozone measurements. COSMIC temperature perturbations show generation of shorter vertical wavelengths efficient for the sub-tropical tropopause folding due to orography induced gravity waves. Moreover, the intense tropopause folding as evidenced by upward-downward vertical velocities couplet could trigger the intrusion of stratospheric ozone rich air into upper tropospheric ozone poor air as also confirmed by high values of potential vorticity during the observational period. Hence, present study reemphasizes the importance of wave induced atmospheric dynamics on atmospheric constituents' especially tropospheric ozone over Himalayan region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Remote Sensing of Environment - Volume 199, 15 September 2017, Pages 256-264
نویسندگان
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