Atmospheric Sounding Temperature and water vapor profiling Atmospheric sounding Atmospheric sounding...
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Atmospheric SoundingTemperature and water vapor profiling
Atmospheric soundingAtmospheric sounding is retrieving vertical profiles of temperature trace-gas concentrations, especially water vapor and ozone.
February 17, 2003
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http://orbit-net.nesdis.noaa.gov/goes/soundings/skewt/html/skewhome.html
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http://orbit-net.nesdis.noaa.gov/goes/soundings/skewt/html/skewhome.html
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dzdz
zdzTBLL
z
z
0
)()]([00
Scwartzchild’s Equation – RTE for no-scattering
L0: radiance emerging from the Earth’s surface
(z): vertical transmittance from height z to space.
T(z): vertical profile of temperature
B[T(z)]: Planck function profile.
Weighting function - W
Wdz
zd
)(
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Idealised transmittance profiles and weighting functions at two frequencies with different absorption coefficients. Vertical coordinate: scale height = - loge(pressure).
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Left-illustrating the attenuation of upwelling radiation emitted from three heights in the atmosphere. Right-the corresponding vertical profile of the contribution to the emission to space.
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TOVS normalized weighting functions (from Smith et al. 1979)
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TOVS normalized weighting functions (from Smith et al. 1979)
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AMSU normalised weighting functions.
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A selection of weighting functions for several bands of the interferometer proposed for the Atmospheric InfraRed Sounder (AIRS) instrument.