Observations of nitric acid perturbations in the winter Arctic stratosphere: Evidence for PSC sedimentation

被引：13

作者：

Arnold, F ^{[1
]}

Burger, V ^{[1
]}

Gollinger, K ^{[1
]}

Roncossek, M ^{[1
]}

Schneider, J ^{[1
]}

Spreng, S ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

来源：

JOURNAL OF ATMOSPHERIC CHEMISTRY | 1998年 / 30卷 / 01期

关键词：

ozone destruction; nitric acid; polar stratospheric clouds; sedimentation; denitrification/nitrification;

D O I：

10.1023/A:1006014003391

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Gaseous nitric acid (HNO3) and hydrogene fluoride CHF) have been measured in the winter Arctic stratosphere using balloon- and aircraft-based Ion Molecule Reaction Mass Spectrometry (IMRMS) instruments. Strong HNO3 perturbations were found in 1993 and 1995 which may indicate nitrification around 11-13 km and denitrification around 20 km altitude. Most likely these perturbations were caused by sedimentation of HNO3 containing aerosols followed by aerosol evaporation at lower altitudes.

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页码：49 / 59

页数：11

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