کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8140113 | 1523616 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mesospheric temperatures and sodium properties measured with the ALOMAR Na lidar compared with WACCM
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mesospheric temperatures and sodium properties measured with the ALOMAR Na lidar compared with WACCM Mesospheric temperatures and sodium properties measured with the ALOMAR Na lidar compared with WACCM](/preview/png/8140113.png)
چکیده انگلیسی
We present a comparison of the temperature and sodium layer properties observed by the ALOMAR Na lidar (69.3°N, 16.0°E) and simulated by the Whole Atmosphere Community Climate Model with specified dynamics and implemented sodium chemistry (WACCM-Na). To constrain the meteorological fields below 60 km, we use MERRA and GEOS-5. For the years 2008 to 2012, we analyse daily averages of temperature between 80.5 km and 101.5 km altitude, and of the Na layer's peak height, peak density, and centroid height. Both model runs are able to reproduce the pronounced seasonal cycle of Na number density and temperature at high latitudes very well. Especially between 86.5 km and 95.5 km, the measured and simulated temperatures agree very well. The lidar measurements confirm the model predictions that the January 2012 stratospheric warming led to large variation in temperature and Na density. The correlation coefficient between Na number density and temperature is positive for almost all altitudes in the lidar data, but not in the simulations. On average, the centroid height and peak height measured by lidar is about 2 km-3 km higher than simulated by WACCM-Na.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 127, May 2015, Pages 111-119
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 127, May 2015, Pages 111-119
نویسندگان
Tim Dunker, Ulf-Peter Hoppe, Wuhu Feng, John M.C. Plane, Daniel R. Marsh,