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HALO-SR NARVAL Meeting 12./13. January 2012 PowerPoint PPT Presentation


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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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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


Halo sr narval meeting 12 13 january 2012

Scientific purpose: Remote sensingofclouds

Cloud optical

thickness

Particle

effective diameter

Liquid

Mixed-phase

Ice

Cloud phase


Halo sr narval meeting 12 13 january 2012

Scientific purpose: Remote sensingofclouds

Measurementsofupwellingradiancedata( )

Radiativetransfercalculations

problems

,

spatialinhomogenity, heterogeneoussurfacealbedo


Halo sr narval meeting 12 13 january 2012

  • TECHNO Mission Layout:

  • cooperationbetween FZ Jülich and LIMHALO-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


Halo sr narval meeting 12 13 january 2012

  • TECHNO Mission Layout:

  • cooperationbetween FZ Jülich and LIMHALO-SR

  • Measured variable (2): actinicfluxdensity

  • bothhemispheres

  • spectralrange

    • UV/VIS: 270-650 nm

  • FWHM: 1.5 nm

Photolyticfrequencies


Halo sr narval meeting 12 13 january 2012

Accreditation & technicalsituation:

  • spectrometersgotadmittancerelatedtothe TECHNO Mission layout

    • nomoregeneralaccreditation/certificationnecessaryatthispoint– „revision“ only

  • experiencesfrom TECHNO Mission offernoproblemsexceptfurtherstabilitychecks


Halo sr narval meeting 12 13 january 2012

  • targetapertureplates - top:

Techno Mission (ApT-5)

NARVAL (ApT-5)


Halo sr narval meeting 12 13 january 2012

  • targetapertureplates - bottom:

Techno Mission (ApB-4)

NARVAL (ApB-8)


Halo sr narval meeting 12 13 january 2012

  • rackpositionhastobetransferredtotherear

  • operatorseat not essential

  • (remote controlpossible)

  • Max. distance:

  • opticalinletbottom – spectrometer = 9m

  • opticalinlet top – spectrometer =t.b.a.

  • calibrationon ground (ground power needed)


Halo sr narval meeting 12 13 january 2012

Rackposition:

Techno Mission (pos. 02)

Narval (target: pos. 09/16/18)


Halo sr narval meeting 12 13 january 2012

  • 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


Halo sr narval meeting 12 13 january 2012

Thanks

foryour

attention !


Halo sr narval meeting 12 13 january 2012

(Eichler, 2009)

[email protected]


Halo sr narval meeting 12 13 january 2012

(Eichler, 2009)

[email protected]


Halo sr narval meeting 12 13 january 2012

(Eichler, 2009)

(Eichler, 2009)

[email protected]


Halo sr narval meeting 12 13 january 2012

Mixture

Hexagonal

Plates

Solid columns

Roughaggregates

Icespheres

(Eichler, 2009)

[email protected]


Halo sr narval meeting 12 13 january 2012

Mixture

Hexagonal

Plates

Solid columns

Roughaggregates

Icespheres

(Eichler, 2009)

[email protected]


Halo sr narval meeting 12 13 january 2012

[email protected]


Halo sr narval meeting 12 13 january 2012

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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