Walbröl, Andreas; Mech, Mario: Liquid water path derived from low-frequency microwave radiometer measurements on Polarstern cruise PS144 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993135 (dataset in review)
Abstract:
This data set contains daily files of vertically integrated cloud liquid water (clwvi, also known as liquid water path (LWP)) derived from measurements of the low-frequency microwave radiometer HATPRO (Humidity And Temperature PROfiler, Rose et al., 2005) on Polarstern cruise PS144 (Rabe & Geibert, 2025). The data set covers the date range from 10 August to 5 October 2024. The LWP retrieval is based on a regression retrieval whose configuration and training is described in Walbröl et al. (2022). To avoid biases in the derived LWP, we applied a clear sky offset correction, which is also described in Walbröl et al. (2022).
Related to:
Bühler, Linnu; Rückert, Janna Elisabeth; Walbröl, Andreas; Mech, Mario; Risse, Nils; Krobot, Pavel; Ebell, Kerstin; Schnitt, Sabrina; Spreen, Gunnar (2026): Water vapor, mixed-phase clouds, precipitation and sea ice emissivity over the Central Arctic Ocean (VAMPIRE-1): remote sensing and in-situ measurements suite during POLARSTERN cruise PS144 (ArcWatch-2) [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.990496
Rabe, Benjamin; Geibert, Walter (2025): The Expedition PS144 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023 /2024. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 794, 312 pp, https://doi.org/10.57738/BZPM_0794_2025
Rose, Thomas; Crewell, Susanne; Löhnert, Ulrich; Simmer, Clemens (2005): A network suitable microwave radiometer for operational monitoring of the cloudy atmosphere. Atmospheric Research, 75(3), 183-200, https://doi.org/10.1016/j.atmosres.2004.12.005
Walbröl, Andreas; Crewell, Susanne; Engelmann, Ronny; Orlandi, Emiliano; Griesche, Hannes; Radenz, Martin; Hofer, Julian; Althausen, Dietrich; Maturilli, Marion; Ebell, Kerstin (2022): Atmospheric temperature, water vapour and liquid water path from two microwave radiometers during MOSAiC. Scientific Data, 9(1), 534, https://doi.org/10.1038/s41597-022-01504-1
Project(s):
Arctic Amplification (AC3)
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS144_06: SeaIcePhys. (ArcWatch1/TransArc3)
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 70.439514 * Median Longitude: 16.211445 * South-bound Latitude: 69.747320 * West-bound Longitude: 13.280451 * North-bound Latitude: 71.131707 * East-bound Longitude: 19.142440
Date/Time Start: 2024-08-09T08:00:00 * Date/Time End: 2024-10-08T09:00:00
Event(s):
PS144_0_Underway-14 (PROfiler FOGHAT) * Latitude Start: 69.747320 * Longitude Start: 19.142440 * Latitude End: 71.131707 * Longitude End: 13.280451 * Date/Time Start: 2024-08-09T08:00:00 * Date/Time End: 2024-10-08T09:00:00 * O2A Registry URI: https://registry.o2a-data.de/items/11589 * Campaign: PS144 (ArcWatch 2; TransArc3) * Basis: Polarstern * Method/Device: Humidity And Temperature PROfiler, Radiometer Physics GmbH (HATPRO)
Comment:
Each netCDF file contains liquid water path estimates derived from HATPRO operated onboard Polarstern during cruise PS144. The total number of files is 56 and the total size is about 80 MB. Each file further contains meta data about the position (latitude, longitude, height above mean sea level), and the quality of the derived liquid water path.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Walbröl, Andreas | |||
| 2 | netCDF file | netCDF | Walbröl, Andreas | derived | ||
| 3 | netCDF file (File Size) | netCDF (Size) | Bytes | Walbröl, Andreas | derived | |
| 4 | Date/time start | Date/time start | Walbröl, Andreas | |||
| 5 | LATITUDE | Latitude | Walbröl, Andreas | Geocode – start | ||
| 6 | LONGITUDE | Longitude | Walbröl, Andreas | Geocode – start | ||
| 7 | Date/time end | Date/time end | Walbröl, Andreas | |||
| 8 | LATITUDE | Latitude | Walbröl, Andreas | Geocode – end | ||
| 9 | LONGITUDE | Longitude | Walbröl, Andreas | Geocode – end |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
224 data points