Risse, Nils; Mech, Mario; Crewell, Susanne: Sea ice microwave emissivity observed from the Polar 5 aircraft during the airborne field campaigns ACLOUD and AFLUX [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965569 (dataset in review)
Abstract:
This data contains sea ice emissivity observations from the Microwave Radar/radiometer for Arctic Clouds (MiRAC; Mech et al., 2019) onboard the Polar 5 aircraft during the ACLOUD (RF23 and RF25) and AFLUX (RF08, RF14, and RF15) field campaigns. MiRAC consists of two components: MiRAC-A with an 89 GHz channel (25° incidence angle, horizontal polarization) and MiRAC-P with six channels around the 183.31 GHz water vapor absorption line (183.31±0.6, ±1.5, ±2.5, ±3.5, ±5.0, and ±7.5 GHz) and two window channels at 243 and 340 GHz (nadir). Note that the polarization and viewing angles of MiRAC-A and -P differ. The emissivity was calculated from the observed brightness temperature with ancillary information on the surface temperature from a KT-19 infrared radiometer and atmospheric profile. The radiative transfer simulations required for the emissivity calculation are performed with the Passive and Active Microwave radiative TRAnsfer (PAMTRA) model (Mech et al., 2020). Further details on the emissivity calculation are described in Risse et al. (2024).
Keyword(s):
References:
Mech, Mario; Kliesch, Leif-Leonard; Anhäuser, Andreas; Rose, Thomas; Kollias, Pavlos; Crewell, Susanne (2019): Microwave Radar/radiometer for Arctic Clouds (MiRAC): first insights from the ACLOUD campaign. Atmospheric Measurement Techniques, 12(9), 5019-5037, https://doi.org/10.5194/amt-12-5019-2019
Mech, Mario; Maahn, Maximilian; Kneifel, Stefan; Ori, Davide; Orlandi, Emiliano; Kollias, Pavlos; Schemann, V; Crewell, Susanne (2020): PAMTRA 1.0: the Passive and Active Microwave radiative TRAnsfer tool for simulating radiometer and radar measurements of the cloudy atmosphere. Geoscientific Model Development, 13(9), 4229-4251, https://doi.org/10.5194/gmd-13-4229-2020
Project(s):
Arctic Amplification (AC3)
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: 78.245842 * Median Longitude: 15.502600 * South-bound Latitude: 78.245789 * West-bound Longitude: 15.501627 * North-bound Latitude: 78.245898 * East-bound Longitude: 15.503796
Date/Time Start: 2017-06-25T10:52:19 * Date/Time End: 2019-04-11T15:20:04
Event(s):
P5_206_ACLOUD_2017_1706252301 (RF23) * Latitude Start: 78.245832 * Longitude Start: 15.503796 * Latitude End: 78.245824 * Longitude End: 15.503693 * Date/Time Start: 2017-06-25T10:52:19 * Date/Time End: 2017-06-25T17:19:19 * Campaign: P5-206_ACLOUD_2017 (ACLOUD) * Basis: POLAR 5 * Method/Device: Aircraft (AC)
P5_206_ACLOUD_2017_1706262401 (RF25) * Latitude Start: 78.245816 * Longitude Start: 15.503711 * Latitude End: 78.245789 * Longitude End: 15.503630 * Date/Time Start: 2017-06-26T12:12:03 * Date/Time End: 2017-06-26T15:24:02 * Campaign: P5-206_ACLOUD_2017 (ACLOUD) * Basis: POLAR 5 * Method/Device: Aircraft (AC)
P5_216_AFLUX_2019_1903310801 (RF08) * Latitude Start: 78.245880 * Longitude Start: 15.501656 * Latitude End: 78.245898 * Longitude End: 15.501627 * Date/Time Start: 2019-03-31T08:33:48 * Date/Time End: 2019-03-31T14:34:47 * Location: Svalbard * Campaign: P5-216_AFLUX_2019 * Basis: POLAR 5 * Method/Device: Aircraft (AC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Risse, Nils | |||
| 2 | Date/Time of event | Date/Time | Risse, Nils | |||
| 3 | Latitude of event | Latitude | Risse, Nils | |||
| 4 | Longitude of event | Longitude | Risse, Nils | |||
| 5 | Campaign of event | Campaign | Risse, Nils | |||
| 6 | netCDF file | netCDF | Risse, Nils | Microwave Radar and radiometer for Arctic Clouds (MiRAC) | ||
| 7 | netCDF file (File Size) | netCDF (Size) | Bytes | Risse, Nils | Microwave Radar and radiometer for Arctic Clouds (MiRAC) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
5 data points
Data
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| 1 Event | 2 Date/Time | 3 Latitude | 4 Longitude | 5 Campaign | 6 netCDF | 7 netCDF (Size) [Bytes] |
|---|---|---|---|---|---|---|
| P5_206_ACLOUD_2017_1706252301 | 2017-06-25T10:52:19 | 78.2458 | 15.5038 | P5-206_ACLOUD_2017 | emissivity_ACLOUD_P5_RF23_20170625.nc | 101 MBytes |
| P5_206_ACLOUD_2017_1706262401 | 2017-06-26T12:12:03 | 78.2458 | 15.5037 | P5-206_ACLOUD_2017 | emissivity_ACLOUD_P5_RF25_20170626.nc | 45.2 MBytes |
| P5_216_AFLUX_2019_1903310801 | 2019-03-31T08:33:48 | 78.2459 | 15.5017 | P5-216_AFLUX_2019 | emissivity_AFLUX_P5_RF08_20190331.nc | 91.7 MBytes |
| P5_216_AFLUX_2019_1904081401 | 2019-04-08T08:49:22 | 78.2458 | 15.5020 | P5-216_AFLUX_2019 | emissivity_AFLUX_P5_RF14_20190408.nc | 80.2 MBytes |
| P5_216_AFLUX_2019_1904111501 | 2019-04-11T09:22:10 | 78.2458 | 15.5020 | P5-216_AFLUX_2019 | emissivity_AFLUX_P5_RF15_20190411.nc | 93.8 MBytes |