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HALO-SR NARVAL Meeting 12./13. January 2012

HALO-SR NARVAL Meeting 12./13. January 2012. University of Leipzig / FZ Jülich. Manfred Wendisch, Birger Bohn, André Ehrlich, Clemens Fricke. Scientific purpose : Remote sensing of clouds. Cloud optical thickness. Particle effective diameter. Liquid. Mixed-phase. Ice.

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HALO-SR NARVAL Meeting 12./13. January 2012

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  1. HALO-SR NARVAL Meeting 12./13. January 2012 University of Leipzig / FZ Jülich Manfred Wendisch, Birger Bohn, André Ehrlich, Clemens Fricke

  2. Scientific purpose: Remote sensingofclouds Cloud optical thickness Particle effective diameter Liquid Mixed-phase Ice Cloud phase

  3. Scientific purpose: Remote sensingofclouds Measurementsofupwellingradiancedata( ) Radiativetransfercalculations problems , spatialinhomogenity, heterogeneoussurfacealbedo

  4. TECHNO Mission Layout: • cooperationbetween FZ Jülich and LIM HALO-SR • Measured variable (1): Radiance • nadir, viewing angle = 2° • spectralrange • VIS: 350-1000 nm • NIR: 1000-2000 nm • FWHM: 1.5 nm (VIS) • 8-9 nm (NIR) remote sensing

  5. TECHNO Mission Layout: • cooperationbetween FZ Jülich and LIM HALO-SR • Measured variable (2): actinicfluxdensity • bothhemispheres • spectralrange • UV/VIS: 270-650 nm • FWHM: 1.5 nm Photolyticfrequencies

  6. Accreditation & technicalsituation: • spectrometersgotadmittancerelatedtothe TECHNO Mission layout • nomoregeneralaccreditation/certificationnecessaryatthispoint– „revision“ only • experiencesfrom TECHNO Mission offernoproblemsexceptfurtherstabilitychecks

  7. targetapertureplates - top: Techno Mission (ApT-5) NARVAL (ApT-5)

  8. targetapertureplates - bottom: Techno Mission (ApB-4) NARVAL (ApB-8)

  9. rackpositionhastobetransferredtotherear • operatorseat not essential • (remote controlpossible) • Max. distance: • opticalinletbottom – spectrometer = 9m • opticalinlet top – spectrometer =t.b.a. • calibrationon ground (ground power needed)

  10. Rackposition: Techno Mission (pos. 02) Narval (target: pos. 09/16/18)

  11. 19“ Inlet • ~ 40kg weight • chassisradiance: • 448x127x450 mm (WxHxD) • 3U • 3A x 28V • 40W (max. 80W) • chassisactinicfluxdensity: • similartoradiance • 3A x 28V • 3U • 40W (max. 85W) • chassis power distributionunit • 1U

  12. Thanks foryour attention !

  13. (Eichler, 2009) fricke@uni-leipzig.de

  14. (Eichler, 2009) fricke@uni-leipzig.de

  15. (Eichler, 2009) (Eichler, 2009) fricke@uni-leipzig.de

  16. Mixture Hexagonal Plates Solid columns Roughaggregates Icespheres (Eichler, 2009) fricke@uni-leipzig.de

  17. Mixture Hexagonal Plates Solid columns Roughaggregates Icespheres (Eichler, 2009) fricke@uni-leipzig.de

  18. fricke@uni-leipzig.de

  19. downward: upward: Definitions – radiativequantities: Iλ(W m-2 nm-1sr-1) • spectral solar radiance Remote sensing • spectral solar actinicfluxdensity Fact, λ(W m-2 nm-1) Photolyticfrequency Motivation HALO TECHNO Mission Messbeispiele & Scientific Outlook

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