Aircraft measurements of broadband irradiances onboard Polar 5 during the COMPEX-EC campaign in spring 2025

DOI

During the COMPEX-EC campaign performed in April 2025, broadband solar and thermal-infrared irradiances in the Norwegian Sea were measured by a pair of CMP22 (0.2-3.6 µm) and CGR4 (4.5-42 µm) radiometers (Kipp&Zonen), respectively, onboard Polar 5. The data set contains time series of both upward and downward solar and thermal-infrared irradiances obtained during in total 7 research flights. 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°. 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).

Identifier
DOI https://doi.org/10.1594/PANGAEA.988461
Related Identifier References https://doi.org/10.1594/PANGAEA.982817
Related Identifier References https://doi.org/10.1594/PANGAEA.983187
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.988461
Provenance
Creator Müller, Joshua ORCID logo; Klingebiel, Marcus ORCID logo; Jäkel, Evelyn; Mech, Mario ORCID logo; Wendisch, Manfred ORCID logo
Publisher PANGAEA
Publication Year 2026
Funding Reference German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID 268020496 https://gepris.dfg.de/gepris/projekt/268020496 TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 7 data points
Discipline Earth System Research
Spatial Coverage (20.327W, 67.822S, 20.328E, 67.822N)
Temporal Coverage Begin 2025-04-04T10:39:47Z
Temporal Coverage End 2025-04-15T15:46:27Z