Contrail properties derived from high‐resolution polarization lidar studies during SUCCESS
Contrail properties derived from high‐resolution polarization lidar studies during SUCCESS
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SUCCESS 期间高分辨率偏振激光雷达研究得出的轨迹特性
DOI：
10.1029/97gl03503
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发表时间：
1998
影响因子：
5.2
通讯作者：
C. Hsueh
中科院分区：
文献类型：
--
作者：
K. Sassen;C. Hsueh
在1996年4月成功的野外战役中，我们的地面偏振激光雷达研究了各种轨迹，从美国国家航空航天局新的DC-8轨迹到商用喷气式飞机扩散成几乎看不见的卷层层的持续轨迹。这些轨迹与自然卷云的不同之处在于，它们倾向于保持薄(∼50-500m)，并产生强烈的激光后向散射和去偏振，通常伴随着日冕，甚至在形成后一小时或更长时间。持续轨迹中的激光雷达去偏振率在∼0.3-0.7之间。由大量小颗粒(20-30微米)组成的尾迹卷云将满足这些发现，这对理解它们的辐射和气候影响具有重要意义。
During the April 1996 SUCCESS field campaign, our ground‐based polarization lidar studied a variety of contrails ranging from a new NASA DC‐8 contrail to persisting contrails from commercial jet aircraft that had spread into an almost invisible cirrostratus sheet. What distinguishes these contrails from natural cirrus is their tendency to remain thin (∼50–500 m), and to generate strong laser backscattering and depolarization, often along with solar coronas, even an hour or more after formation. Lidar depolarization ratios in persisting contrails ranged from ∼0.3–0.7. Contrail‐cirrus clouds composed of high numbers of small (20–30 µm) particles would satisfy these findings, which has implications for comprehending their radiative and climatic effects.