کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9458843 | 1311307 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Validation of a 2D model using observed profiles of SF6 with main focus on the tropics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
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![عکس صفحه اول مقاله: Validation of a 2D model using observed profiles of SF6 with main focus on the tropics Validation of a 2D model using observed profiles of SF6 with main focus on the tropics](/preview/png/9458843.png)
چکیده انگلیسی
Sulfur hexafluoride (SF6) is a useful tracer to test the transport behavior of atmospheric models. There have been few measurements of the vertical distribution of SF6 especially in the tropics, which have restricted the validation of vertical transport in two-dimensional (2D) global models. In an attempt to fill this void, we have used a 2D model in a transient mode to compare the calculated vertical distributions of SF6 with observations. The gross feature of the simulated vertical profiles compares well with the observations particularly in the tropics. Comparisons with UARS/HALOE CH4-data show that the sharp vertical gradient above the tropopause and the extremely weak gradient above 25Â km in the observations in India are due to the quasi biannual oscillation (QBO). The QBO is not taken into account in the model dynamics but in average between its west and east phase vertical profiles are represented well by the model. We also confirm that global SF6 source emissions should be distributed on the model grid proportional to electrical power usage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 39, Issue 7, March 2005, Pages 1255-1261
Journal: Atmospheric Environment - Volume 39, Issue 7, March 2005, Pages 1255-1261
نویسندگان
Varun Sheel, Shyam Lal, Christoph Brühl,