Walbröl, Andreas; Mech, Mario: Liquid water path derived from low-frequency microwave radiometer measurements on Polarstern cruise PS149 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993200 (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 PS149. The data set covers the date range from 6 July to 29 August 2025. 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; 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-2): remote sensing and in-situ measurements suite during POLARSTERN cruise PS149 (CONTRASTS) [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.990497
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_PS149_07: VAMPIRE-2
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 83.694342 * Median Longitude: 5.824576 * South-bound Latitude: 82.066515 * West-bound Longitude: -11.965360 * North-bound Latitude: 84.612224 * East-bound Longitude: 21.570501
Date/Time Start: 2025-07-06T08:03:00 * Date/Time End: 2025-08-29T12:00:00
Event(s):
PS149_0_Underway-18-HATPRO_ICEHAT-02 * Latitude: 82.066515 * Longitude: 19.865740 * Date/Time Start: 2025-07-06T08:03:00 * Date/Time End: 2025-07-22T19:31:00 * O2A Registry URI: https://registry.o2a-data.de/items/12733 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Humidity And Temperature PROfiler, Radiometer Physics GmbH (HATPRO) * Comment: Not logged in DShip.
PS149_0_Underway-18-HATPRO_ICEHAT-04 * Latitude: 83.842940 * Longitude: -3.619781 * Date/Time: 2025-07-23T11:30:00 * O2A Registry URI: https://registry.o2a-data.de/items/12733 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Humidity And Temperature PROfiler, Radiometer Physics GmbH (HATPRO) * Comment: Not logged in DShip.
PS149_0_Underway-18-HATPRO_ICEHAT-07 * Latitude: 83.776525 * Longitude: 7.053833 * Date/Time Start: 2025-08-02T12:45:00 * Date/Time End: 2025-08-02T12:52:00 * O2A Registry URI: https://registry.o2a-data.de/items/12733 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Humidity And Temperature PROfiler, Radiometer Physics GmbH (HATPRO) * Comment: Not logged in DShip.
Comment:
Each netCDF file contains liquid water path estimates derived from HATPRO operated onboard Polarstern during cruise PS149. 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 | Event label | Event | Walbröl, Andreas | |||
| 2 | Other event | Other event | Walbröl, Andreas | |||
| 3 | File content | Content | Walbröl, Andreas | |||
| 4 | netCDF file | netCDF | Walbröl, Andreas | derived | ||
| 5 | netCDF file (File Size) | netCDF (Size) | Bytes | Walbröl, Andreas | derived | |
| 6 | Date/time start | Date/time start | Walbröl, Andreas | |||
| 7 | LATITUDE | Latitude | Walbröl, Andreas | Geocode – start | ||
| 8 | LONGITUDE | Longitude | Walbröl, Andreas | Geocode – start | ||
| 9 | Date/time end | Date/time end | Walbröl, Andreas | |||
| 10 | LATITUDE | Latitude | Walbröl, Andreas | Geocode – end | ||
| 11 | 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:
221 data points