Airborne observations of the 1992 arctic winter stratosphere by FTIR solar absorption spectroscopy

Geoffrey C. Toon; J. F. Blavier; J. N. Solario; J. M. Szeto

doi:10.1117/12.140199

12 February 1993 Airborne observations of the 1992 arctic winter stratosphere by FTIR solar absorption spectroscopy

Geoffrey C. Toon, J. F. Blavier, J. N. Solario, J. M. Szeto

Proceedings Volume 1715, Optical Methods in Atmospheric Chemistry; (1993) https://doi.org/10.1117/12.140199
Event: Environmental Sensing '92, 1992, Berlin, Germany

Abstract

The JPL MkIV interferometer, a Fourier transform IR (FTIR) spectrometer designed specifically for atmospheric remote sensing, made measurements of the composition of the Arctic stratosphere in January, February, and March 1992. These measurements were made from the NASA DC-8 aircraft as part of the AASE2 campaign. The data reveal that despite 5 to 6 km of subsidence inside the vortex, which more than doubled the vertically integrated column amounts (burdens) of HF and HNO₃ with respect to outside the vortex, considerable losses of NO₂, HCl, and ClNO₃ were evident by mid-January. Temporary freeze-out of HNO₃ was observed only on one occasion, Jan. 19, and was accompanied by substantial reductions in HCl and ClNO₃. During February and March, ClNO₃ and NO₂ amounts increased dramatically. HCl also recovered but at a much slower rate, so that by March ClNO₃ was the major reservoir of inorganic chlorine, at times exceeding HCl by a factor 2.

Citation Download Citation

Geoffrey C. Toon, J. F. Blavier, J. N. Solario, and J. M. Szeto "Airborne observations of the 1992 arctic winter stratosphere by FTIR solar absorption spectroscopy", Proc. SPIE 1715, Optical Methods in Atmospheric Chemistry, (12 February 1993); https://doi.org/10.1117/12.140199

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available