Lidar backscatter to extinction, mass and area conversions for stratospheric aerosols based on midlatitude balloonborne size distribution measurements
Lidar backscatter to extinction, mass and area conversions for stratospheric aerosols based on midlatitude balloonborne size distribution measurements
复制标题
基于中纬度气球大小分布测量的平流层气溶胶激光雷达后向散射到消光、质量和面积转换
DOI：
10.1029/2002gl015609
复制
发表时间：
2002
影响因子：
5.2
通讯作者：
T. Deshler
中科院分区：
文献类型：
--
作者：
H. Jäger;T. Deshler
来自拉勒米，怀俄明州，气球载粒子计数器测量的平流层硫酸气溶胶的尺寸分布，被用来计算粒子消光比，质量，和表面积粒子后向散射，和粒子后向散射和消光的波长依赖性。然后，这些比率可以用来推断粒子消光，质量和面积从中纬度激光雷达数据在光谱范围355纳米至1064纳米的时间段1991年至1999年。转换定义在四个高度间隔从对流层顶到30公里的时间分辨率为四个月。从早期的研究转换的结果包括跨越时间段1979年至1999年。El Chichón（1982年）和Pinatubo（1991年）的爆发强烈影响了这些转换。在El Chichón之前和大约自1997年以来，观测到本底水平扩大。
Size distributions of the stratospheric sulfuric acid aerosol derived from balloonborne particle counter measurements from Laramie, Wyoming, are used to calculate ratios of particle extinction, mass, and surface area to particle backscatter, and the wavelength dependences of particle backscatter and extinction. These ratios may then be used to infer particle extinction, mass, and area from midlatitude lidar data in the spectral range 355 nm to 1064 nm for the time period 1991 to 1999. The conversions are defined in four height intervals from the tropopause to 30 km with a time resolution of four months. Results of conversions from earlier studies are included to span the time period 1979 to 1999. The eruptions of El Chichón (1982) and Pinatubo (1991) strongly influence these conversions. Extended background levels are observed prior to El Chichón and since about 1997.