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Vertical Variability of Night Sky Brightness in Urbanised Areas

Quaestiones Geographicae
Volume 42 (2023): Issue 1 (March 2023)
By:
Open Access
|Oct 2022

Figures & Tables

Fig. 1

DJI Matrice 210 RTK drone with its proprietary measuring device (photo D.Karpińska).
DJI Matrice 210 RTK drone with its proprietary measuring device (photo D.Karpińska).

Fig. 2

Schematic representation of the altitudes selected for the acquisition of data on light pollution of the night sky.
Schematic representation of the altitudes selected for the acquisition of data on light pollution of the night sky.

Fig. 3

Daytime (bottom) and nighttime (top) 360° panorama around the measurement location at the NCU campus (photo M.Kunz).
Daytime (bottom) and nighttime (top) 360° panorama around the measurement location at the NCU campus (photo M.Kunz).

Fig. 4

Daytime (bottom) and nighttime (top) 360° panorama around the measurement location at the car park at Bema Street (photo D.Karpińska).
Daytime (bottom) and nighttime (top) 360° panorama around the measurement location at the car park at Bema Street (photo D.Karpińska).

Fig. 5

Visualisation of land cover/land use at measurement locations in three buffer zones (25 m, 50 m and 100 m).
Visualisation of land cover/land use at measurement locations in three buffer zones (25 m, 50 m and 100 m).

Fig. 6

Summary of the obtained results illustrating the variability of the night sky brightness in the vertical gradient at the measuring site located in Toruń: (a) at the NCU car park, (b) at the car park in Bema Street.
Summary of the obtained results illustrating the variability of the night sky brightness in the vertical gradient at the measuring site located in Toruń: (a) at the NCU car park, (b) at the car park in Bema Street.

Fig. 7

Comparison of the obtained results showing variability of the night sky brightness in the vertical gradient at both measurement locations during: (a) cloudless night, (b) night with varied cloud cover.
Comparison of the obtained results showing variability of the night sky brightness in the vertical gradient at both measurement locations during: (a) cloudless night, (b) night with varied cloud cover.

Selected technical parameters of the measuring device_

ParameterCharacteristic
weight380 g
dimension5,5 × 8,2 × 15,8 cm
standard of data transmissionLoRaWAN
frequency bands868 MHz
operating time [3 000 mAh]∼ 12 month
range in built-up areas3–4 km
number of measurements during the day36
frequency of measurements15 min
operational time21:00–06:00 CEST
measuring sensorssurface brightness of the sky, temperature, humidity
the angle of data collection20°
tightness classIP65
DOI: https://doi.org/10.14746/quageo-2023-0001 | Journal eISSN: 2081-6383 | Journal ISSN: 2082-2103
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Language: English
Page range: 5 - 14
Submitted on: Jun 27, 2022
Published on: Oct 1, 2022
Published by: Adam Mickiewicz University
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
light pollution,
smartcity,
UAV,
urban area,
vertical measurement
Related subjects:
Geosciences,
Geography

© 2022 Dominika Karpińska, Mieczysław Kunz, published by Adam Mickiewicz University
This work is licensed under the Creative Commons Attribution 4.0 License.

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