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Using the Method of Differential Optical Spectroscopy for Satellite Diagnostics of Methane Content in a Scattering Atmosphere
Abstract
The article discusses the application of the method of differential optical absorption spectroscopy (DOAS) to the problems of localized methane emission from satellite spectral measurements. It is shown that the application of the DOAS method in a scattering atmosphere can lead to significant errors in the estimates of methane concentrations, and it is proposed to supplement it with a filtering procedure for signals distorted by the effects of atmospheric scattering. The procedure takes into account the correlation of errors in the retrieved concentrations of methane and water due to the uncertainty of the trajectory of photons propagating in the scattering atmosphere. This correlation has been estimated by numerical calculations of the indicated errors for a model atmosphere that includes cirrus clouds and two types of surface aerosols.
About the Authors
A. I. Bril
B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
N. S. Miatselskaya
B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
V. A. Peshcharankou
B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
A. P. Chaikovsky
B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
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Review
For citations:
Bril A.I., Miatselskaya N.S., Peshcharankou V.A., Chaikovsky A.P. Using the Method of Differential Optical Spectroscopy for Satellite Diagnostics of Methane Content in a Scattering Atmosphere. Zhurnal Prikladnoii Spektroskopii. 2023;90(5):785-792. (In Russ.)
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