Title :
Precision estimates for SCIAMACHY limb retrievals
Author :
Kaiser, J.W. ; Eichmann, K.-U. ; Rozanov, V.V. ; Burrows, J.P.
Author_Institution :
Inst. of Remote Sensing, Bremen Univ., Germany
Abstract :
SCIAMACHY is a space-based hyper-spectral spectrometer for atmospheric research. It is recording Earth-shine spectra in the UV-visible and near infrared spectral range in nadir, limb and occultation geometries. Measurements of UV-VIS-NIR spectra in limb geometry are a new technique with high demands on the quality of radiative transfer and retrieval algorithms. Theoretical precisions for retrievals from SCIAMACHY´s limb measurements are calculated with a fully spherical radiative transfer model. O3 profiles will be measured with a precision of 1% throughout the stratosphere and in the UT/LS region. The retrievals of other trace gases will have precisions between 1 and 100% depending on retrieval altitude
Keywords :
atmospheric measuring apparatus; infrared spectrometers; ultraviolet spectrometers; visible spectrometers; 240 to 2380 nm; BrO; Earth-shine spectrum; Envisat; H2O; IR spectral range; NO2; O3; O3 profiles; OClO; SCIAMACHY limb retrievals; UV spectral range; atmospheric research; limb geometry; limb measurements; methane; nadir geometry; occultation geometry; precision estimates; retrieval algorithm; space-based hyper-spectral spectrometer; spherical radiative transfer model; stratosphere; trace gases; visible spectral range; Aerosols; Atmospheric measurements; Atmospheric modeling; Covariance matrix; Gases; Geometry; Instruments; Satellites; Spectroscopy; Temperature;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977087
