Absorption spectroscopy
; Aerosols
; Database systems
; Electromagnetic wave absorption
; Light absorption
; Radiative transfer
; Temperature
; Temperature distribution
; Cross section
; Differential optical absorption spectroscopy
; Discrete ordinate radiative transfer models
; Operational algorithms
; Ozone monitoring instruments
; Radiative transfer model
; Slant column densities
; Temperature dependence
; Atmospheric temperature
; dimer
; oxygen
; aerosol
; atmospheric chemistry
; atomic absorption spectroscopy
; oxygen
; radiative transfer
; surface pressure
; temperature effect
; vertical profile
; absorption spectroscopy
; aerosol
; Article
; controlled study
; density
; geometry
; pressure
; priority journal
; slant column density
; surface property
; temperature dependence
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
The sensitivities of oxygen dimer (O4) slant column densities (SCDs) were examined by applying temperature-dependent O4cross sections using the radiative transfer model (RTM) calculation with the linearized pseudo-spherical vector discrete ordinate radiative transfer model. For the sensitivity study, we used a newly developed cross section database in place of the database used in the operational algorithm. Newly investigated O4cross section databases for 203�K and 293�K were used for the radiance simulation by interpolating temperature for each atmospheric layer based on the vertical profile of standard atmosphere in the RTM. The effect of the temperature-dependent cross sections was a significant O4SCD increase of 8.3% with dependence on satellite and solar viewing geometries. Furthermore, the O4SCD generally increased by an estimated 3.9% based on the observation geometries of the Ozone Monitoring Instrument. For the long-term comparison, the O4SCD estimated from the temperature-dependent cross sections corrects 20% of the total underestimation of O4SCD between the observation and simulation. Although the surface pressure variation and background aerosol effect also correct the O4SCD discrepancy, the effect of temperature-dependent cross sections was more important than the effects of surface pressure variation and background aerosols. Therefore, temperature dependence of the cross section in the RTM calculation is essential for the accurate simulation of O4SCD. � 2016 Elsevier Ltd
Research Institute for Applied Mechanics, Kyushu University, Fukuoka, Japan; Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea
Recommended Citation:
Park S,S,, Takemura T,et al. Effect of temperature-dependent cross sections on O4slant column density estimation by a space-borne UV–visible hyperspectral sensor[J]. Atmospheric Environment,2017-01-01,152