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dc.contributor.authorMueller, T.
dc.contributor.authorMueller, D.
dc.contributor.authorDubois, R.
dc.date.accessioned2014-01-07T14:57:28Z
dc.date.available2014-01-07T14:57:28Z
dc.date.issued2005-03-20
dc.identifier.citationMueller , T , Mueller , D & Dubois , R 2005 , ' Particle extinction measured at ambient conditions with differential optical absorption spectroscopy. 1 : System setup and characterization ' , Applied Optics , vol. 44 , no. 9 , pp. 1657-1666 . https://doi.org/10.1364/AO.44.001657
dc.identifier.issn0003-6935
dc.identifier.otherPURE: 2000171
dc.identifier.otherPURE UUID: 0d85e996-2955-4354-afe2-0e3116279b42
dc.identifier.otherWOS: 000227758000019
dc.identifier.otherScopus: 15944427095
dc.identifier.urihttp://hdl.handle.net/2299/12456
dc.description.abstractWe describe an instrument for measuring the particle extinction coefficient at ambient conditions in the spectral range from 270 to 1000 nm. It is based on a differential optical absorption spectroscopy (DOAS) system, which was originally used for measuring trace-gas concentrations of atmospheric absorbers in the ultraviolet-visible wavelength range. One obtains the particle extinction spectrum by measuring the total atmospheric extinction and subtracting trace-gas absorption and Rayleigh scattering. The instrument consists of two nested Newton-type telescopes, which are simultaneously used for emitting and detecting light, and two arrays of retrorefiectors at the ends of the two light paths. The design of this new instrument solves crucial problems usually encountered in the design of such instruments. The telescope is actively repositioned during the measurement cycle. Particle extinction is simultaneously measured at several wavelengths by the use of two grating spectrometers. Optical turbulence causes lateral movement of the spot of light in the receiver telescope. Monitoring of the return signals with a diode permits correction for this effect. Phase-sensitive detection efficiently suppresses background signals from the atmosphere as well as from the instrument itself. The performance of the instrument was tested during a measurement period of 3 months from January to March 2000. The instrument ran without 'significant interruption during that period. A mean accuracy of 0.032 km(-1) was found for the extinction coefficient, for an 11-day period in March. (c) 2005 Optical Society of America.en
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofApplied Optics
dc.subjectRAMAN LIDAR
dc.subjectAEROSOL-SIZE DISTRIBUTIONS
dc.subjectBACKSCATTER LIDAR
dc.subjectCROSS-SECTIONS
dc.subjectMULTIWAVELENGTH LIDAR OBSERVATIONS
dc.subjectREGION
dc.subjectRETRIEVAL
dc.subjectOZONE
dc.subjectREGULARIZATION
dc.subjectINVERSION ALGORITHM
dc.titleParticle extinction measured at ambient conditions with differential optical absorption spectroscopy. 1 : System setup and characterizationen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2005-03-20
rioxxterms.versionofrecordhttps://doi.org/10.1364/AO.44.001657
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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