The Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) and its operations from an Unmanned Aerial Vehicle (UAV) during the AROMAT campaign
| Autor: | Andreas Carlos Meier, Caroline Fayt, Daniel Constantin, Livio Bellegante, Anja Schönardt, Lucian Georgescu, Mirjam den Hoed, Doina Nicolae, Michel Van Roozendael, Dirk Schuettemeyer, Alexis Merlaud, Marc Allaart, Thomas Ruhtz, Jeroen Maes, Frederik Tack, Florin Mingireanu |
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| Rok vydání: | 2017 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Meteorology Airspeed 0211 other engineering and technologies Context (language use) 02 engineering and technology Air mass (solar energy) 01 natural sciences unmanned aerial vehicle (UAV) Mixing ratio 500 Naturwissenschaften und Mathematik::550 Geowissenschaften Geologie::550 Geowissenschaften lcsh:TA170-171 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing Spectrometer lcsh:TA715-787 Differential optical absorption spectroscopy lcsh:Earthwork. Foundations AROMAT campaign compositioN monitorinG (SWING) lcsh:Environmental engineering Trace gas Lidar 13. Climate action Environmental science |
| Zdroj: | Atmospheric Measurement Techniques Atmospheric Measurement Techniques, Vol 11, Pp 551-567 (2018) |
| ISSN: | 1867-8548 |
| DOI: | 10.5194/amt-2017-211 |
| Popis: | The Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) is a compact remote sensing instrument dedicated to mapping trace gases from an unmanned aerial vehicle (UAV). SWING is based on a compact visible spectrometer and a scanning mirror to collect scattered sunlight. Its weight, size, and power consumption are respectively 920 g, 27 cm × 12 cm × 8 cm, and 6 W. SWING was developed in parallel with a 2.5 m flying-wing UAV. This unmanned aircraft is electrically powered, has a typical airspeed of 100 km h−1, and can operate at a maximum altitude of 3 km. We present SWING-UAV experiments performed in Romania on 11 September 2014 during the Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaign, which was dedicated to test newly developed instruments in the context of air quality satellite validation. The UAV was operated up to 700 m above ground, in the vicinity of the large power plant of Turceni (44.67∘ N, 23.41∘ E; 116 ma.s.l.). These SWING-UAV flights were coincident with another airborne experiment using the Airborne imaging differential optical absorption spectroscopy (DOAS) instrument for Measurements of Atmospheric Pollution (AirMAP), and with ground-based DOAS, lidar, and balloon-borne in situ observations. The spectra recorded during the SWING-UAV flights are analysed with the DOAS technique. This analysis reveals NO2 differential slant column densities (DSCDs) up to 13±0.6×1016 molec cm−2. These NO2 DSCDs are converted to vertical column densities (VCDs) by estimating air mass factors. The resulting NO2 VCDs are up to 4.7±0.4×1016 molec cm−2. The water vapour DSCD measurements, up to 8±0.15×1022 molec cm−2, are used to estimate a volume mixing ratio of water vapour in the boundary layer of 0.013±0.002 mol mol−1. These geophysical quantities are validated with the coincident measurements. |
| Databáze: | OpenAIRE |
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