The quantum yield of O(1S) in CO2 photolysis retrieved from the Martian atmosphere - The quantum yield of O(1S) in CO2 photolysis

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Volume 690 (October 2024)

A&A, 690 (2024) A319

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Table 1

Error magnitude of various parameters in our analysis pipeline.

Parameter	Symbol	Error magnitude	Procedure
Solar spectrum at TOA	ΔI₀	~5%	FM
Attenuated solar spectrum	ΔI_z	$\sqrt{{(e^{- τ} Δ I_{0})}^{2} + {(- τ I_{z} e^{- τ} Δ τ)}^{2}}$ $\sqrt {{{\left( {{e^{ - \tau }}{\rm{\Delta }}{I_0}} \right)}^2} + {{\left( { - \tau {I_z}{e^{ - \tau }}{\rm{\Delta }}\tau } \right)}^2}}$	FM
Cross section	Δσ_λ	~5%	FM
Optical path	Δτ_λ	$\sqrt{{(\cos {(θ)}^{- 1} Δ σ_{λ} \int_{Z_{T O A}}^{Z} [{CO}_{2}] d Z)}^{2}}$ $\sqrt {{{\left( {\cos {{(\theta )}^{ - 1}}{\rm{\Delta }}{\sigma _\lambda }\int_{{Z_{TOA}}}^Z {\left[ {{\rm{C}}{{\rm{O}}_2}} \right]} dZ} \right)}^2}}$	FM
O(IS) Production rate	Δη_z	$\sqrt{{(σ_{λ} Q Y_{λ} {[C O_{2}]}_{z} Δ I_{z})}^{2} + {(I Q Y_{λ} {[C O_{2}]}_{z} Δ σ_{λ})}^{2} + {(I σ_{λ} {[C O_{2}]}_{z} Δ Q Y_{λ})}^{2}}$ $\sqrt {{{\left( {{\sigma _\lambda }Q{Y_\lambda }{{\left[ {C{O_2}} \right]}_z}{\rm{\Delta }}{I_z}} \right)}^2} + {{\left( {IQ{Y_\lambda }{{\left[ {C{O_2}} \right]}_z}{\rm{\Delta }}{\sigma _\lambda }} \right)}^2} + {{\left( {I{\sigma _\lambda }{{\left[ {C{O_2}} \right]}_z}{\rm{\Delta }}Q{Y_\lambda }} \right)}^2}}$	FM
Model error	$Δ ϵ_{i}^{Z}$ $\Delta _i^Z$	Equation (13)	FM
IUVS systematic error	ΔS_λ	~25% @ 297.2 nm	Obs.
IUVS random error	Δy_z	~5% @ 297.2 nm	Obs.
Vertical profile Standard deviation	σ	$\sqrt{\sum_{i = 1}^{n} {(y_{i} - \bar{y})}^{2} / (n - 1)}$ $\sqrt {\sum\nolimits_{i = 1}^n {{{\left( {{y_i} - \bar y} \right)}^2}} /(n - 1)}$	Obs.
Vertical profile Standard error	$σ_{\bar{y}}$ ${\sigma _{\bar y}}$	$σ / \sqrt{n}$ $\sigma /\sqrt n$	Output
Retrieved profile covariance matrix	ϵ_noise	Noise error covariance matrix of the vertical resolution	Output
Retrieved profile total error	ϵ_tot	$\sqrt{ϵ_{S E M}^{2} + ϵ_{noise}^{2}}$ $\sqrt {_{SEM}^2 + _{{\rm{noise }}}^2}$	Output

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