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TWP-ICE Surface Radiation Measurements. Chuck Long MAJOR kudos to: Brad Atkinson, Anthony Noonan Nigel Tapper, Ian McHugh and crew Mike and Jerimiah Reynolds. Location of surface radiation sites. What, where, when…. 1-minute data available. Wanted: Clear Skies!!!. SW - 160 O FOV

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Twp ice surface radiation measurements

TWP-ICE Surface Radiation Measurements

Chuck Long

MAJOR kudos to:

Brad Atkinson, Anthony Noonan

Nigel Tapper, Ian McHugh and crew

Mike and Jerimiah Reynolds



What where when
What, where, when…

1-minute data available.


Wanted clear skies
Wanted: Clear Skies!!!

  • SW - 160O FOV

  • LW – “effective”

    • High, cold cirrus OK


Flux analysis
Flux Analysis

  • With LWdn

    • Continuous estimated clear-sky LWdn

    • LW cloud effect (clear-measured LW)

    • LW “effective” sky cover (low and mid)

    • LW cloud field radiating temperature

  • With SWdn total and diffuse

    • Identified clear-sky periods

    • Continuous estimated clear-sky SWdn

    • SW cloud effect (clear-measured SW)

    • Total sky cover

    • For overcast, effective vis optical depth


Flux analysis1
Flux Analysis

  • With upwelling SW and LW

    • Continuous estimated clear-sky upwelling SW & LW

    • Upwelling cloud effect

    • Complete surface radiative cloud forcing


It was a dark and stormy day
It was a dark and stormy…Day!

Jan. 16, 2006

Cape Don

Garden Point


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