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Updated: Jun 14, 2026
06:48
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
Published on: May 10, 2020
Summary
The Novaya Zemlya effect, an atmospheric optical phenomenon, was observed in Canada. This study models the conditions causing the sun to appear visible below the horizon during polar night.
Area of Science:
- Atmospheric optics
- Meteorology
- Geophysics
Background:
- The Novaya Zemlya effect is a rare atmospheric optical phenomenon.
- It historically describes the sun appearing prematurely during polar night.
- This effect is caused by long-range optical ducting in the lower atmosphere.
Purpose of the Study:
- To document and model an occurrence of the Novaya Zemlya effect.
- To analyze the atmospheric conditions responsible for the observed optical phenomena.
Main Methods:
- Observation of the Novaya Zemlya effect at Tuktoyaktuk, Canada on May 16, 1979.
- Computer simulation to model atmospheric conditions.
- Matching observational data with calculated images from the simulation.
Main Results:
- The sun's image was observed below the horizon (minimum solar altitude of -1°34').
- The sun appeared in various shapes, including a bright rectangle and stacked or separated strips.
- A model was developed that matched the observed phenomena with calculated atmospheric conditions.
Conclusions:
- The observed event was successfully modeled as a long-range optical ducting phenomenon.
- The study provides a validated model for the atmospheric conditions causing the Novaya Zemlya effect.
- This research enhances understanding of atmospheric refraction and optical illusions in polar regions.
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