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Titre du document / Document title

Retrieval and monitoring of atmospheric trace gas concentrations in nadir and limb geometry using the space-borne sciamachy instrument

Auteur(s) / Author(s)

SIERK B. (1) ; RICHTER A. (1) ; ROZANOV A. (1) ; VON SAVIGNY Ch. (1) ; SCHMOLTNER A. M. (1) ; BUCHWITZ M. (1) ; BOVENSMANN H. (1) ; BURROWS J. P. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Institute of Environmental Physics, University of Bremen, Otto-Hahn_allee 1, 28359 Bremen, ALLEMAGNE

Résumé / Abstract

The Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) onboard the European Envisat spacecraft performs continuous spectral observations of reflected, scattered and transmitted sunlight in various observation geometries. A unique feature of SCIAMACHY is the capability of probing the atmosphere in three different observation geometries: The nadir, limb, and occultation measurement modes. In nadir mode, column densities of trace gases are retrieved with a spatial resolution of typically 30 x 60 km using the Differential Optical Absorption Spectroscopy (DOAS) technique (Platt and Pemer, 1983). Alternating with the nadir measurement, vertical profiles of absorber concentration in the stratosphere are derived in limb and occultation. In this paper we present an overview over some applications of SCIAMACHY data in space-based monitoring of atmospheric pollution. The DOAS algorithms for the retrieval of total column amounts from nadir spectra are briefly described and case studies of pollution events are presented. We also illustrate the technique used to derive stratospheric concentration profiles from limb observations and show comparisons with other remote sensing systems. Special emphasis will be given to techniques, which take advantage of SCIAMACHY's different viewing geometries. In particular, we will discuss the potential and limits of strategies to infer tropospheric abundances of O3 and NO2.

Revue / Journal Title

Environmental monitoring and assessment    ISSN  0167-6369   CODEN EMASDH 

Source / Source

2006, vol. 120, no1-3, pp. 65-77 [13 page(s) (article)] (16 ref.)

Langue / Language

Anglais

Editeur / Publisher

Springer, Dordrect, PAYS-BAS  (1981) (Revue)

Mots-clés anglais / English Keywords

Occultation

;

Nadir

;

Air pollution

;

Concentration distribution

;

Trace compound

;

Nitrogen dioxide

;

Ozone

;

Atmospheric sounding

;

Troposphere

;

Stratosphere

;

Differential spectrometry

;

Optical spectrometry

;

Thermal imaging

;

Infrared absorption spectrometry

;

Satellite observation

;

Space remote sensing

;

Mots-clés français / French Keywords

Géométrie limb

;

Satellite Envisat

;

Occultation

;

Nadir

;

Pollution air

;

Distribution concentration

;

Composé trace

;

Azote dioxyde

;

Ozone

;

Sondage atmosphérique

;

Troposphère

;

Stratosphère

;

Spectrométrie différentielle

;

Spectrométrie optique

;

Imagerie thermique

;

Spectrométrie absorption IR

;

Observation par satellite

;

Télédétection spatiale

;

Mots-clés espagnols / Spanish Keywords

Ocultación

;

Nadir

;

Contaminación aire

;

Distribución concentración

;

Compuesto huella

;

Nitrógeno dióxido

;

Ozono

;

Sondeo atmosférico

;

Troposfera

;

Estratosfera

;

Espectrometría diferencial

;

Espectrometría óptica

;

Imageria termica

;

Espectrometría absorción IR

;

Observación por satélite

;

Teledetección espacial

;

Mots-clés d'auteur / Author Keywords

optical absorption spectroscopy

;

satellite remote sensing

;

tropospheric trace gases

;

Localisation / Location

INIST-CNRS, Cote INIST : 19359, 35400013328597.0040

Nº notice refdoc (ud4) : 18122083



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