Symbol n
n is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
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Why this formula appears here
where is the incident spectrum, the wavelength-dependent optical depth, n(z) the number density of an absorbing species at altitude z , and its absorption cross-section, which itself depends on temperature and pressure. The instrument records I() ; the abundance profile n(z) is recovered by inverting this relation against a model atmosphere, which means every composition result carries the assumptions of that model — cloud and haze opacity, temperature structure, and the line-list data used for — bundled in with the raw spectral measurement.
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Symbol z
z is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
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Read this expression with the definitions, units, and assumptions supplied by the article.
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Published contexts (2)
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Equation 12 · Space Science
How Planetary Science and Exploration Actually Work
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
where is the incident spectrum, the wavelength-dependent optical depth, n(z) the number density of an absorbing species at altitude z , and its absorption cross-section, which itself depends on temperature and pressure. The instrument records I() ; the abundance profile n(z) is recovered by inverting this relation against a model atmosphere, which means every composition result carries the assumptions of that model — cloud and haze opacity, temperature structure, and the line-list data used for — bundled in with the raw spectral measurement.
Equation guide → · Article →Equation 16 · Space Science
How Planetary Science and Exploration Actually Work
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
where is the incident spectrum, the wavelength-dependent optical depth, n(z) the number density of an absorbing species at altitude z , and its absorption cross-section, which itself depends on temperature and pressure. The instrument records I() ; the abundance profile n(z) is recovered by inverting this relation against a model atmosphere, which means every composition result carries the assumptions of that model — cloud and haze opacity, temperature structure, and the line-list data used for — bundled in with the raw spectral measurement.
Equation guide → · Article →