Nitric acid trihydrate (NAT) in polar stratospheric clouds

被引：169

作者：

Voigt, C

Schreiner, J

Kohlmann, A

Zink, P

Mauersberger, K

Larsen, N

Deshler, T

Kröger, C

Rosen, J

Adriani, A

Cairo, F

Di Donfrancesco, G

Viterbini, M

Ovarlez, J

Ovarlez, H

David, C

Dörnbrack, A

机构：

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

[2] Danish Meteorol Inst, Div Middle Atmosphere Res, DK-2100 Copenhagen, Denmark

[3] Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA

[4] CNR, Ist Fis Atmosfera, I-00133 Rome, Italy

[5] Ecole Polytech, CNRS, Meteorol Dynam Lab, F-91128 Palaiseau, France

[6] Univ Paris, Inst Pierre Simon Laplace, CNRS, Serv Aeron, F-75252 Paris, France

[7] DLR Oberpfaffenhofen, Inst Phys Atmosphare, D-82234 Wessling, Germany

来源：

SCIENCE | 2000年 / 290卷 / 5497期

关键词：

D O I：

10.1126/science.290.5497.1756

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A comprehensive investigation of polar stratospheric clouds was performed on 25 January 2000 with instruments onboard a balloon gondola flown from Kiruna, Sweden. Cloud layers were repeatedly encountered at altitudes between 20 and 24 kilometers over a wide range of atmospheric temperatures (185 to 197 kelvin). Particle composition analysis showed that a large fraction of the cloud layers was composed of nitric acid trihydrate (NAT) particles, containing water and nitric acid at a molar ratio of 3:1; this confirmed that these long-sought solid crystals exist well above ice formation temperatures. The presence of NAT particles enhances the potential for chlorine activation with subsequent ozone destruction in polar regions, particularly in early and late winter.

引用

页码：1756 / 1758

页数：3

共 29 条

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