Saharan dust contribution to the Caribbean summertime boundary layer –a lidar study during SALTRACE
Saharan dust contribution to the Caribbean summertime boundary layer –a lidar study during SALTRACE
复制标题
撒哈拉沙尘对加勒比夏季边界层的贡献——SALTRACE 期间的一项激光雷达研究
DOI：
10.5194/acp-16-11535-2016
复制
发表时间：
2016
影响因子：
6.3
通讯作者：
A. Ansmann
中科院分区：
文献类型：
--
作者：
S. Groß;J. Gasteiger;V. Freudenthaler;T. Müller;D. Sauer;C. Toledano;A. Ansmann
Abstract. Dual-wavelength lidar measurements with the small lidar system POLIS of the Ludwig-Maximilians-Universitat Munchen were performed during the SALTRACE experiment at Barbados in June and July 2013. Based on high-accuracy measurements of the linear depolarization ratio down to about 200 m above ground level, the dust volume fraction and the dust mass concentration within the convective marine boundary layer can be derived. Additional information from radiosonde launches at the ground-based measurement site provide independent information on the convective marine boundary layer height and the meteorological situation within the convective marine boundary layer. We investigate the lidar-derived optical properties, the lidar ratio and the particle linear depolarization ratio at 355 and 532 nm and find mean values of 0.04 (SD 0.03) and 0.05 (SD 0.04) at 355 and 532 nm, respectively, for the particle linear depolarization ratio, and (26 ± 5) sr for the lidar ratio at 355 and 532 nm. For the concentration of dust in the convective marine boundary layer we find that most values were between 20 and 50 µg m−3. On most days the dust contribution to total aerosol volume was about 30–40 %. Comparing the dust contribution to the column-integrated sun-photometer measurements we see a correlation between high dust contribution, high total aerosol optical depth and a low Angstrom exponent, and of low dust contribution with low total aerosol optical depth.
影响因子：
6.3
作者：
Gross, S.;Esselborn, M.;Petzold, A.
通讯作者：
Petzold, A.
巴巴多斯上空信风积云的精细尺度结构——CARRIBA项目简介
影响因子：
6.3
作者：
Siebert;M. Beals;J. Bethke;E. Bierwirth;T. Conrath;K. Dieckmann;F. Ditas;A. Ehrlich;D. Farrell;S. Hartmann;M. A. Izaguirre;J. Katzwinkel;L. Nuijens;G. Roberts;M. Schäfer;R. A. Shaw;T. Schmeissner;I. Serikov;B. Stevens;F. Stratmann
通讯作者：
F. Stratmann
影响因子：
3
作者：
Gro, S.;Freudenthaler, V.;Weinzierl, B.
通讯作者：
Weinzierl, B.