Analysis of the physical state of one Arctic polar stratospheric
Analysis of the physical state of one Arctic polar stratospheric
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北极极地平流层物理状态分析
DOI：
10.1029/94gl02405
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
D. Baumgardner
中科院分区：
文献类型：
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作者：
K. Drdla;A. Tabazadeh;R. Turco;M. Jacobson;J. Dye;C. Twohy;D. Baumgardner
在北极平流层空中考察期间，对ER-2飞机沿着的大气气溶胶谱分布和NOy（HNO 3 + NO + NO2 + 2.N205）进行了同步观测。NOy仪器的流动特性使我们能够推导出在极地平流层云（PSC）事件期间存在的冷凝NOy量（假设为HNO 3）。对1月24日飞行的分析表明，如果观测到的PSC是由固体硝酸三水合物（NAT）组成的，那么这种冷凝的HNO 3量与气溶胶体积并不完全一致。然而，该组合物与使用新的气溶胶物理化学模型（APCM）预测的液体H2SO 4/I-INO 3/I-I2 H2SO 4溶液液滴一致。该协议详细对应于温度和湿度的变化。H2SO 4，HNO 3，和H2O的重量百分比，从测量得到的所有对应于那些预测的三元，液体溶液。
During the Arctic Airborne Stratospheric Expe- dition, simultaneous measurements of aerosol size distribution and NOy (HNO 3 + NO + NO 2 + 2.N20 5) were made along ER-2 flight paths. The flow characteristics of the NOy instrument allow us to derive the condensed NOy amount (assumed to be HNO3) present during polar stratospheric cloud (PSC) events. Analysis of the January 24 th flight indicates that this condensed HNO 3 amount does not agree well with the aerosol volume if the observed PSCs are composed of solid nitric acid trihydrate (NAT), as is generally assumed. However, the composition agrees well with that predicted for liquid H2SO4/I-INO3/I-I2 ¸ solution droplets using a new Aerosol Physical Chemistry Model (APCM). The agreement corresponds in detail to variations in temperature and humidity. The weight percentages of H2SO 4, HNO 3, and H20 derived from the measurements all correspond to those predicted for ternary, liquid solutions.