Mesosphere Study by Wide-Field Twilight Polarization Measurements: First Results beyond the Polar Circle

Abstract

The paper describes the observations and first results of studying the mesosphere temperature and dust based on twilight wide-field polarization analysis using original all-sky camera started in 2015 in Apatity, northern Russia (67.6 deg N, 33.4 deg E). It is the first twilight polarization measurements session conducted in the polar region and the first measurements during the winter and early spring season. The general polarization properties of twilight sky and the separation procedure of single scattering are described. The Boltzmann temperature decrease above 70 km and lack of mesosphere dust that is typical for this season are the key results of the study.

7 pages, 5 figures

References in corpus (2)

• Detection of Leonids meteoric dust in the upper atmosphere by polarization measurements of the twilight sky
• Summer Mesosphere Temperature Distribution from Wide-Angle Polarization Measurements of the Twilight Sky

Cited by in corpus (4)

• Noctilucent Cloud Particle Size Determination based on Multi-Wavelength All-Sky Analysis
• Noctilucent Clouds Polarimetry: Twilight Measurements in a Wide Range of Scattering Angles
• Retrieval of Particle Size Distribution of Polar Stratospheric Clouds Based on Wide-Angle Color and Polarization Analysis
• Detection of Molecular Scattering Field by Polarization Analysis of Sky Background During the Transitive Twilight and Temperature Measurements near the Stratopause