Water Vapor Profiling using a Widely Tunable, Amplified Diode Laser Based Differential Absorption Lidar (DIAL)

dc.contributor.authorNehrir, Amin R.
dc.contributor.authorRepasky, Kevin S.
dc.contributor.authorCarlsten, John L.
dc.contributor.authorObland, Michael D.
dc.contributor.authorShaw, Joseph A.
dc.date.accessioned2019-03-27T19:24:55Z
dc.date.available2019-03-27T19:24:55Z
dc.date.issued2009-04
dc.description.abstractA differential absorption lidar (DIAL) instrument for automated profiling of water vapor in the lower troposphere has been designed, tested, and is in routine operation at Montana State University. The laser transmitter for the DIAL instrument uses a widely tunable external cavity diode laser (ECDL) to injection seed two cascaded semiconductor optical amplifiers (SOAs) to produce a laser transmitter that accesses the 824–841-nm spectral range. The DIAL receiver utilizes a 28-cm-diameter Schmidt–Cassegrain telescope; an avalanche photodiode (APD) detector; and a narrowband optical filter to collect, discriminate, and measure the scattered light. A technique of correcting for the wavelength-dependent incident angle upon the narrowband optical filter as a function of range has been developed to allow accurate water vapor profiles to be measured down to 225 m above the surface. Data comparisons using the DIAL instrument and collocated radiosonde measurements are presented demonstrating the capabilities of the DIAL instrument.en_US
dc.description.sponsorshipNASA Grant NNX06AD11G; NASA Graduate Student Researchers Programen_US
dc.identifier.citationWater Vapor Profiling using a Widely Tunable, Amplified Diode Laser Based Differential Absorption Lidar (DIAL), Amin R. Nehrir, Kevin S. Repasky, John L. Carlsten, Michael D. Obland, and Joseph A. Shaw. Journal of Atmospheric and Oceanic Technology, Vol. 26, No. 4, 733-745, April 2009.en_US
dc.identifier.issn1520-0426
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/15347
dc.language.isoenen_US
dc.rightsCC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/legalcodeen_US
dc.titleWater Vapor Profiling using a Widely Tunable, Amplified Diode Laser Based Differential Absorption Lidar (DIAL)en_US
dc.typeArticleen_US
mus.citation.extentfirstpage733en_US
mus.citation.extentlastpage745en_US
mus.citation.issue4en_US
mus.citation.journaltitleJournal of Atmospheric and Oceanic Technologyen_US
mus.citation.volume26en_US
mus.contributor.orcidShaw, Joseph A.|0000-0003-1056-1269en_US
mus.data.thumbpage11en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doi10.1175/2008jtecha1201.1en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentElectrical & Computer Engineering.en_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US

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