Sea ice microwave emissivity observed from the Polar 5 aircraft during the airborne field campaigns ACLOUD and AFLUX


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).

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Metadata Access
Creator Risse, Nils ORCID logo; Mech, Mario ORCID logo; Crewell, Susanne ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference German Research Foundation Crossref Funder ID 268020496 TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 5 data points
Discipline Earth System Research
Spatial Coverage (15.502W, 78.246S, 15.504E, 78.246N); Svalbard
Temporal Coverage Begin 2017-06-25T10:52:19Z
Temporal Coverage End 2019-04-11T15:20:04Z