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Weber, Anna; Pörtge, Veronika; Zinner, Tobias; Mayer, Bernhard (2024): Spectral radiance measurements with the hyperspectral and polarized imaging system specMACS during the HALO-(AC)3 field campaign [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.966992

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Abstract:
During the HALO-(AC)3 campaign, the hyperspectral and polarized imaging system specMACS was integrated into the German research aircraft HALO in a nadir-looking perspective. This dataset contains calibrated spectral radiances in mW/(m2 nm sr) for the shortwave infrared wavelength range between about 1000 and 2400nm measured by the SWIR spectrometer of specMACS. The spectrometer has 320 spatial pixels along a spatial line oriented in across-track direction with a field of view of 35.5 degree and measures at an acquisition frequency of 30Hz. The calibration of the data was performed as described in Ewald et al. (2016). Because of the large size of the data, the calibrated radiances for each research flight were split into different files along the wavelength dimension. Each dataset contains measurements of 20 wavelength channels for the wavelength range given in the file name. Additionally, the dataset includes georeferencing information with viewing zenith and viewing azimuth angles as well as sensor latitude, longitude, and height above WGS84 for every measured pixel as a separate file for every flight. Note that during the first three flights there was some icing of the window in front of the cameras which is visible in the data.
Keyword(s):
airborne measurements; Arctic; HALO; HALO-(AC)³; specMACS; spectral radiance
Related to:
Ewald, Florian; Kölling, Tobias; Baumgartner, Andreas; Zinner, Tobias; Mayer, Bernhard (2016): Design and characterization of specMACS, a multipurpose hyperspectral cloud and sky imager. Atmospheric Measurement Techniques, 9(5), 2015-2042, https://doi.org/10.5194/amt-9-2015-2016
Weber, Anna; Kölling, Tobias; Pörtge, Veronika; Baumgartner, Andreas; Rammeloo, Clemens; Zinner, Tobias; Mayer, Bernhard (2024): Polarization upgrade of specMACS: calibration and characterization of the 2D RGB polarization-resolving cameras. Atmospheric Measurement Techniques, 17(5), 1419-1439, https://doi.org/10.5194/amt-17-1419-2024
Funding:
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
German Research Foundation (DFG), grant/award no. 28423678
Coverage:
Median Latitude: 66.790148 * Median Longitude: 19.862531 * South-bound Latitude: 48.067780 * West-bound Longitude: 11.288060 * North-bound Latitude: 67.830280 * East-bound Longitude: 20.338890
Date/Time Start: 2022-03-11T00:00:00 * Date/Time End: 2022-04-14T00:00:00
Event(s):
HALO_220311a (RF01) * Latitude Start: 48.067780 * Longitude Start: 11.288060 * Latitude End: 67.830280 * Longitude End: 20.338890 * Date/Time Start: 2022-03-11T13:19:00 * Date/Time End: 2022-03-11T16:22:30 * Campaign: HALO_AC3 * Basis: HALO * Method/Device: Aircraft (AC) * Comment: Oberpfaffenhofen - Kiruna
HALO_220312a (RF02) * Latitude Start: 67.830280 * Longitude Start: 20.338890 * Latitude End: 67.830280 * Longitude End: 20.338890 * Date/Time Start: 2022-03-12T08:22:00 * Date/Time End: 2022-03-12T16:44:06 * Campaign: HALO_AC3 * Basis: HALO * Method/Device: Aircraft (AC) * Comment: Kiruna - Kiruna
HALO_220313a (RF03) * Latitude Start: 67.830280 * Longitude Start: 20.338890 * Latitude End: 67.830280 * Longitude End: 20.338890 * Date/Time Start: 2022-03-13T08:04:00 * Date/Time End: 2022-03-13T16:52:49 * Campaign: HALO_AC3 * Basis: HALO * Method/Device: Aircraft (AC) * Comment: Kiruna - Kiruna
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventWeber, Anna
2Optional event labelEvent 2Weber, Anna
3Latitude of eventLatitudeWeber, Anna
4Longitude of eventLongitudeWeber, Anna
5DATE/TIMEDate/TimeWeber, AnnaGeocode
6File contentContentWeber, Anna
7netCDF filenetCDFWeber, AnnaHyperspectral and polarization resolving imager, Munich Aerosol Cloud Scanner (specMACS)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
456 data points

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