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Becker, Sebastian; Ehrlich, André; Wendisch, Manfred (2023): Aircraft measurements of broadband irradiances onboard Polar 5 and Polar 6 during the HALO-(AC)³ campaign in spring 2022 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.963654

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Abstract:
During the HALO-(AC)³ campaign performed in March/April 2022, broadband solar and thermal-infrared irradiances in the vicinity of Svalbard were measured by pairs of CMP22 (0.2-3.6 µm) and CGR4 (4.5-42 µm) radiometers (Kipp&Zonen), respectively, onboard Polar 5 and Polar 6. The data set contains time series of both upward and downward solar and thermal-infrared irradiances obtained during in total 26 research flights (13 with each aircraft). All irradiances were corrected for instrument inertia (Ehrlich and Wendisch, 2015), the solar downward irradiance additionally for the aircraft attitude (Bannehr and Schwiesow, 1993). Since the latter correction is only valid for cloud-free conditions dominated by direct illumination, both a corrected and an uncorrected version are given. A rough cloud flag is included in the data set to distinguish between situations dominated by direct and diffuse illumination. To avoid too large uncertainties, the attitude flag can be used to filter situations with aircraft attitude angles (roll, pitch) exceeding 5°. Additionally, obvious icing and large temperature gradients, which disturb the thermal equilibrium between sensor and instrument body, are flagged. The data set further contains the solar downward irradiance simulated for cloud-free conditions and the upward brightness temperature measured by the KT-19 infrared thermometer (HEITRONICS, 9.6-11.5 µm).
Keyword(s):
Broadband radiation; HALO-(AC)³; irradiance; Polar 5; Polar 6
Related to:
Bannehr, Lutz; Schwiesow, R (1993): A Technique to Account for the Misalignment of Pyranometers Installed on Aircraft. Journal of Atmospheric and Oceanic Technology, 10(5), https://doi.org/10.1175/1520-0426(1993)010%3C0774:ATTAFT%3E2.0.CO;2
Ehrlich, André; Wendisch, Manfred (2015): Reconstruction of high-resolution time series from slow-response broadband terrestrial irradiance measurements by deconvolution. Atmospheric Measurement Techniques, 8(9), 3671-3684, https://doi.org/10.5194/amt-8-3671-2015
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 78.242854 * Median Longitude: 15.319956 * South-bound Latitude: 78.091476 * West-bound Longitude: 6.004681 * North-bound Latitude: 78.246003 * East-bound Longitude: 15.503610
Date/Time Start: 2022-03-20T10:39:14 * Date/Time End: 2022-04-10T14:19:30
Event(s):
P5_232_HALO_2022_2203200401 (HALO-AC3_20220320_P5_RF01)  * Latitude Start: 78.245748 * Longitude Start: 15.502836 * Latitude End: 78.245752 * Longitude End: 15.503439 * Date/Time Start: 2022-03-20T10:58:59 * Date/Time End: 2022-03-20T15:47:59 * Location: Arctic * Campaign: P5-232_HALO_2022 * Basis: POLAR 5 * Method/Device: Aircraft (AC)
P5_232_HALO_2022_2203220501 (HALO-AC3_20220322_P5_RF02)  * Latitude Start: 78.245760 * Longitude Start: 15.503422 * Latitude End: 78.245734 * Longitude End: 15.503610 * Date/Time Start: 2022-03-22T08:03:16 * Date/Time End: 2022-03-22T10:01:15 * Location: Arctic * Campaign: P5-232_HALO_2022 * Basis: POLAR 5 * Method/Device: Aircraft (AC)
P5_232_HALO_2022_2203220602 (HALO-AC3_20220322_P5_RF03)  * Latitude Start: 78.245700 * Longitude Start: 15.503481 * Latitude End: 78.245771 * Longitude End: 15.502994 * Date/Time Start: 2022-03-22T11:20:34 * Date/Time End: 2022-03-22T16:08:33 * Location: Arctic * Campaign: P5-232_HALO_2022 * Basis: POLAR 5 * Method/Device: Aircraft (AC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Campaign of eventCampaign
Date/Time of eventDate/Time
netCDF filenetCDFBecker, SebastianRadiometers, Kipp & Zonen, CMP22 (0.2-3.6 µm) and CGR4 (4.5-42 µm)
netCDF file (File Size)netCDF (Size)BytesBecker, SebastianRadiometers, Kipp & Zonen, CMP22 (0.2-3.6 µm) and CGR4 (4.5-42 µm)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
26 data points

Data

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Event

Campaign

Date/Time

netCDF

netCDF (Size) [Bytes]
P5_232_HALO_2022_2203200401 P5-232_HALO_20222022-03-20HALO-AC3_P5_20220320_RF01_Airborne_Broadband_Irradiance_V1.nc17.9 MBytes
P5_232_HALO_2022_2203220501 P5-232_HALO_20222022-03-22HALO-AC3_P5_20220322_RF02_Airborne_Broadband_Irradiance_V1.nc6.5 MBytes
P5_232_HALO_2022_2203220602 P5-232_HALO_20222022-03-22HALO-AC3_P5_20220322_RF03_Airborne_Broadband_Irradiance_V1.nc18 MBytes
P5_232_HALO_2022_2203250701 P5-232_HALO_20222022-03-25HALO-AC3_P5_20220325_RF04_Airborne_Broadband_Irradiance_V1.nc20.8 MBytes
P5_232_HALO_2022_2203280801 P5-232_HALO_20222022-03-28HALO-AC3_P5_20220328_RF05_Airborne_Broadband_Irradiance_V1.nc19.2 MBytes
P5_232_HALO_2022_2203290901 P5-232_HALO_20222022-03-29HALO-AC3_P5_20220329_RF06_Airborne_Broadband_Irradiance_V1.nc4.2 MBytes
P5_232_HALO_2022_2203291002 P5-232_HALO_20222022-03-29HALO-AC3_P5_20220329_RF07_Airborne_Broadband_Irradiance_V1.nc21.5 MBytes
P5_232_HALO_2022_2203301101 P5-232_HALO_20222022-03-30HALO-AC3_P5_20220330_RF08_Airborne_Broadband_Irradiance_V1.nc19 MBytes
P5_232_HALO_2022_2204011201 P5-232_HALO_20222022-04-01HALO-AC3_P5_20220401_RF09_Airborne_Broadband_Irradiance_V1.nc21.9 MBytes
P5_232_HALO_2022_2204041301 P5-232_HALO_20222022-04-04HALO-AC3_P5_20220404_RF10_Airborne_Broadband_Irradiance_V1.nc18.2 MBytes
P5_232_HALO_2022_2204051401 P5-232_HALO_20222022-04-05HALO-AC3_P5_20220405_RF11_Airborne_Broadband_Irradiance_V1.nc18.4 MBytes
P5_232_HALO_2022_2204071501 P5-232_HALO_20222022-04-07HALO-AC3_P5_20220407_RF12_Airborne_Broadband_Irradiance_V1.nc18.7 MBytes
P5_232_HALO_2022_2204101601 P5-232_HALO_20222022-04-10HALO-AC3_P5_20220410_RF13_Airborne_Broadband_Irradiance_V1.nc21 MBytes
P6_231_HALO_2022_2203200401 P6-231_HALO_20222022-03-20HALO-AC3_P6_20220320_RF01_Airborne_Broadband_Irradiance_V1.nc19.9 MBytes
P6_231_HALO_2022_2203220501 P6-231_HALO_20222022-03-22HALO-AC3_P6_20220322_RF02_Airborne_Broadband_Irradiance_V1.nc23.6 MBytes
P6_231_HALO_2022_2203240601 P6-231_HALO_20222022-03-24HALO-AC3_P6_20220324_RF03_Airborne_Broadband_Irradiance_V1.nc22.2 MBytes
P6_231_HALO_2022_2203260702 P6-231_HALO_20222022-03-26HALO-AC3_P6_20220326_RF04_Airborne_Broadband_Irradiance_V1.nc19 MBytes
P6_231_HALO_2022_2203280801 P6-231_HALO_20222022-03-28HALO-AC3_P6_20220328_RF05_Airborne_Broadband_Irradiance_V1.nc6 MBytes
P6_231_HALO_2022_2203290901 P6-231_HALO_20222022-03-29HALO-AC3_P6_20220329_RF06_Airborne_Broadband_Irradiance_V1.nc23.3 MBytes
P6_231_HALO_2022_2203301001 P6-231_HALO_20222022-03-30HALO-AC3_P6_20220330_RF07_Airborne_Broadband_Irradiance_V1.nc21.4 MBytes
P6_231_HALO_2022_2204011101 P6-231_HALO_20222022-04-01HALO-AC3_P6_20220401_RF08_Airborne_Broadband_Irradiance_V1.nc22.1 MBytes
P6_231_HALO_2022_2204041201 P6-231_HALO_20222022-04-04HALO-AC3_P6_20220404_RF09_Airborne_Broadband_Irradiance_V1.nc18.5 MBytes
P6_231_HALO_2022_2204051301 P6-231_HALO_20222022-04-05HALO-AC3_P6_20220405_RF10_Airborne_Broadband_Irradiance_V1.nc19.1 MBytes
P6_231_HALO_2022_2204081401 P6-231_HALO_20222022-04-08HALO-AC3_P6_20220408_RF11_Airborne_Broadband_Irradiance_V1.nc22.5 MBytes
P6_231_HALO_2022_2204091501 P6-231_HALO_20222022-04-09HALO-AC3_P6_20220409_RF12_Airborne_Broadband_Irradiance_V1.nc20.6 MBytes
P6_231_HALO_2022_2204101601 P6-231_HALO_20222022-04-10HALO-AC3_P6_20220410_RF13_Airborne_Broadband_Irradiance_V1.nc21.1 MBytes