...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Polar stratospheric clouds during SOLVE/THESEO: Comparison of lidar observations with in situ measurements - art. no. D02212
【24h】

Polar stratospheric clouds during SOLVE/THESEO: Comparison of lidar observations with in situ measurements - art. no. D02212

机译：SOLVE / THESEO期间的极地平流层云：激光雷达观测与原位测量的比较-艺术。没有。 D02212

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Polar stratospheric clouds (PSCs) were observed on several flights during the 1999/2000 SOLVE/THESEO mission. Here we present an analysis of PSC size distribution, composition, and particle phase based on near coincident measurements using the Multiangle Aerosol Spectrometer Probe (MASP) and Focused Cavity Aerosol Spectrometer (FCAS III) on board the ER-2 as well as lidar instruments on board the DC-8 and Falcon aircrafts. We calculate the aerosol backscatter ratios and aerosol depolarization ratios at infrared and visible wavelengths based on the particle size distributions measured by the MASP and FCAS III instruments. We then compare our calculations to observed lidar measurements taken from on board the DC-8 and Falcon aircraft, which flew the same flight paths as the ER-2 on 20 January and 3 February 2000, respectively. Our comparison shows that calculations based on the mixed clouds containing small (submicrometer) spherical particles and large (2.5-22 mm diameter) nonspherical particles seen by the FCAS III and MASP are consistent with lidar observations. Our analysis shows that the infrared aerosol depolarization ratio must be measured to detect and identify mixed PSC clouds and that relying only on measurements of depolarization in the visible causes incorrect identification of mixed clouds as solution droplets. This study suggests that mixed clouds of supercooled ternary solutions were observed in coexistence with larger solid nitric acid hydrate particles. [References: 45]
机译：在1999/2000 SOLVE / THESEO任务期间的几次飞行中都观察到了极地平流层云（PSC）。在这里，我们基于ER-2上的多角度气溶胶光谱仪探针（MASP）和聚焦腔气溶胶光谱仪（FCAS III）以及激光雷达仪器，基于近乎一致的测量结果，对PSC尺寸分布，成分和颗粒相进行了分析。登上DC-8和猎鹰飞机。我们根据MASP和FCAS III仪器测得的粒径分布，计算红外和可见光波长下的气溶胶反向散射比和气溶胶去极化比。然后，我们将计算结果与从DC-8和Falcon飞机上观测到的激光雷达测量值进行比较，它们分别于2000年1月20日和ER-2飞行了相同的飞行路径。我们的比较表明，基于FCAS III和MASP所见的包含小（亚微米）球形颗粒和大（2.5-22 mm直径）非球形颗粒的混合云计算，与激光雷达观测结果一致。我们的分析表明，必须测量红外气溶胶的去极化率才能检测和识别混合的PSC云，并且仅依靠可见光中的去极化测量会导致错误地将混合云识别为溶液液滴。这项研究表明，观察到过冷三元溶液的混合云与较大的固体硝酸水合物颗粒共存。 [参考：45]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号