Determination of the methane content in the atmosphere using correlation radiometer
- Authors: Shishigin S.A.1
-
Affiliations:
- Zuev Institute of Atmospheric Optics, Siberian Branch
- Issue: Vol 52, No 9 (2016)
- Pages: 1092-1096
- Section: Studying Atmospheric Processes from Space
- URL: https://journals.rcsi.science/0001-4338/article/view/148512
- DOI: https://doi.org/10.1134/S000143381609022X
- ID: 148512
Cite item
Abstract
In this work the procedure of replacing the inhomogeneous atmosphere with homogeneous layers is discussed. The absorption and emission functions of a layer in a selected spectral region are the same as they are for the inhomogeneous layer. The dependence of the effective brightness temperature of a layer on its thickness is shown in the methane absorption band 1220–1260 cm–1. Negative values of luminosity spectral density of a homogenous atmospheric layer with a width of over 3200 m indicate an increase in the weakening role of the layer for the outgoing radiation in the considered atmospheric model. The application of the method of gas optical filter correlation for a measurement of the methane content in the near-ground atmospheric layer from an aerospace platform is considered.
Keywords
About the authors
S. A. Shishigin
Zuev Institute of Atmospheric Optics, Siberian Branch
Author for correspondence.
Email: ssa@iao.ru
Russian Federation, Tomsk