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Related Experiment Videos

The toboggan sun.

Wayne P S Davidson1, Siebren Y van der Werf

  • 1Environment Canada, Box 127, Resolute Bay, Nunavut X0A 0V0, Canada.

Applied Optics
|October 6, 2005
PubMed
Summary
This summary is machine-generated.

Localized temperature inversions can cause a variant of the Novaya Zemlya effect, making the sun appear to slide along mountains. Early observations by Barents and Scott are supported by new photographic evidence and ray-tracing calculations.

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Area of Science:

  • Atmospheric optics
  • Geophysics

Background:

  • The Novaya Zemlya effect is a rare atmospheric optical phenomenon.
  • Localized temperature inversions can alter the path of sunlight.

Purpose of the Study:

  • To explain a special variant of the Novaya Zemlya effect.
  • To document historical and recent observations of this phenomenon.

Main Methods:

  • Literature review of historical accounts.
  • Analysis of recent photographic evidence.
  • Ray-tracing calculations for atmospheric modeling.

Main Results:

  • Confirmed that temperature inversions following terrain can cause the sun to appear to slide along mountain slopes.
  • Identified early observations by Willem Barents (1597) and Captain Scott (1911).

Related Experiment Videos

  • Presented new photographic material illustrating the effect.

    • Conclusions:

    • The study explains the mechanism behind a specific variant of the Novaya Zemlya effect.
    • Historical and modern evidence validates the phenomenon's occurrence.
    • Ray-tracing confirms the optical principles involved.