| The vertical structure of the atmospheric boundary layer over the central Arctic Ocean |
| |
| 作者姓名： | BIAN Lingen MA Yongfeng LU Changgui LIN Xiang |
| |
| 作者单位： | Chinese Academy of Meteorological Sciences, Beijing 100081, China;Chinese Academy of Meteorological Sciences, Beijing 100081, China;Chinese Academy of Meteorological Sciences, Beijing 100081, China;Chinese Academy of Meteorological Sciences, Beijing 100081, China |
| |
| 基金项目： | The Program of China Polar Environment Investigation and Assessment under contract No.CHINARE2011-2015. |
| |
| 摘 要： | The tropopause height and the atmospheric boundarylayer （PBL） height as well as the variation of inversion layer above the floating ice surface are presented using GPS （global position system ） radiosonde sounding data and relevant data obtained by Chinas fourth arctic scientific expedition team over the central Arctic Ocean （86°-88°N, 144°-170°W） during the summer of 2010. The tropopause height is from 9.8 to 10.5 km, with a temperature range between -52.2 and -54.10C in the central Arctic Ocean. Two zones of maximum wind （over 12 m/s） are found in the wind profile, namely, low- and upper-level jets, located in the middle troposphere and the tropopause, respectively. The wind direction has a marked variation point in the two jets from the southeast to the southwest. The average PBL height determined by two methods is 341 and 453 m respectively. These two methods can both be used when the inversion layer is very low, but the results vary significantly when the inversion layer is very high. A significant logarithmic relationship exists between the PBL height and the inversion intensity, with a correlation coefficient of 0.66, indicating that the more intense the temperature inversion is, the lower the boundary layer will be. The observation results obviously differ from those of the third arctic expedition zone （800-85° N）. The PBL height and the inversion layer thickness are much lower than those at 870-88° N, but the inversion temperature is more intense, meaning a strong ice- atmosphere interaction in the sea near the North Pole. The PBL structure is related to the weather system and the sea ice concentration, which affects the observation station.
|
| 关 键 词： | 大气边界层 北冰洋 垂直结构 北极科学考察 对流层顶 无线电探空仪 全球定位系统 边界层高度 |
| 收稿时间： | 2013/1/12 0:00:00 |
| 修稿时间： | 5/7/2013 12:00:00 AM |
The vertical structure of the atmospheric boundary layer over the central Arctic Ocean |
| |
| BIAN Lingen,MA Yongfeng,LU Changgui,LIN Xiang.The vertical structure of the atmospheric boundary layer over the central Arctic Ocean[J].Acta Oceanologica Sinica,2013,32(10):34-40. |
| |
| Authors: | BIAN Lingen MA Yongfeng LU Changgui and LIN Xiang |
| |
| Institution: | Chinese Academy of Meteorological Sciences, Beijing 100081, China |
| |
| Abstract: | The tropopause height and the atmospheric boundary layer(PBL)height as well as the variation of inversion layer above the floating ice surface are presented using GPS(global position system)radiosonde sounding data and relevant data obtained by China's fourth arctic scientific expedition team over the central Arctic Ocean(86°-88°N,144°-170°W)during the summer of 2010.The tropopause height is from 9.8 to 10.5 km, with a temperature range between-52.2 and-54.1℃ in the central Arctic Ocean.Two zones of maximum wind(over 12 m/s)are found in the wind profile,namely,low-and upper-level jets,located in the middle troposphere and the tropopause,respectively.The wind direction has a marked variation point in the two jets from the southeast to the southwest.The average PBL height determined by two methods is 341 and 453 m respectively.These two methods can both be used when the inversion layer is very low,but the results vary significantly when the inversion layer is very high.A significant logarithmic relationship exists between the PBL height and the inversion intensity,with a correlation coefficient of 0.66,indicating that the more intense the temperature inversion is,the lower the boundary layer will be.The observation results obviously differ from those of the third arctic expedition zone(80°-85°N).The PBL height and the inversion layer thickness are much lower than those at 87°-88°N,but the inversion temperature is more intense,meaning a strong iceatmosphere interaction in the sea near the North Pole.The PBL structure is related to the weather system and the sea ice concentration,which affects the observation station. |
| |
| Keywords: | central Arctic Ocean radiosonde sounding PBL height inversion layer |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
