Stratospheric NO2 and H2O mixing ratio profiles from high resolution infrared solar spectra using nonlinear least squares
Abstract
Nonlinear least squares spectral curve fitting has been used to derive vertical mixing ratio profiles for NO2 and H2O above 16 km from high resolution (∼.02 cm-1) solar spectra collected during sunset with a balloon borne interferometer. The NO2 profile shows a sharp peak of ∼8 ppbv at 32 km falling rapidly to <0.5 ppbv at 17 km. The H2O profile shows a broad peak of ∼6.5 ppmv at 30 km falling to <4 ppmv at 17 km.
- Publication:
-
Geophysical Research Letters
- Pub Date:
- July 1980
- DOI:
- 10.1029/GL007i007p00489
- Bibcode:
- 1980GeoRL...7..489N
- Keywords:
-
- Atmospheric Composition;
- Infrared Spectroscopy;
- Nitrogen Dioxide;
- Solar Spectra;
- Stratosphere;
- Water Vapor;
- Curve Fitting;
- Distribution (Property);
- High Resolution;
- Least Squares Method;
- Line Spectra;
- Vertical Distribution;
- Aeronomy: Absorption and scattering of radiation (particles or waves);
- Geochemistry: Chemistry of the atmosphere;
- Meteorology: H₂O in the atmosphere (humidity;
- clouds;
- and precipitation);
- General or Miscellaneous: Techniques applicable in three or more fields