Griesche, Hannes; Seifert, Patric; Engelmann, Ronny; Radenz, Martin; Bühl, Johannes (2020): Cloudnet LWC during PS106 [dataset]. Leibniz-Institut für Troposphärenforschung e.V., Leipzig, PANGAEA, https://doi.org/10.1594/PANGAEA.919383
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Abstract:
The dataset contains daily nc-files of the Cloudnet liquid water content during Polarstern cruise PS106.
The data is retrieved using the instrument synergystic approach Cloudnet (Illingworth, 2007 doi:10.1175/BAMS-88-6-883).
This variable was calculated for the profiles where the \"categorization\" data has diagnosed that liquid water is present and liquid water path is available from a coincident microwave radiometer. The model temperature and pressure were used to estimate the
theoretical adiabatic liquid water content gradient for each cloud base and the adiabatic liquid water content is then scaled so that its integral matches the radiometer measurement so that the liquid water content now follows a quasi-adiabatic profile. If the liquid layer is detected by the lidar only, there is the potential for cloud top height to be underestimated and so if the adiabatic integrated liquid water content is less than that measured by the microwave radiometer, the cloud top is extended until the adiabatic integrated liquid water content agrees with the value measured by the microwave radiometer.
Missing values indicate that either
1) a liquid water layer was diagnosed but no microwave radiometer data was available,
2) a liquid water layer was diagnosed but the microwave radiometer data was unreliable; this may be because a melting layer was present in the profile, or because the retrieved lwp was unphysical (values of zero are not uncommon for thin supercooled liquid layers), or
3) that rain is present in the profile and therefore, the vertical extent of liquid layers is difficult to ascertain.
Related to:
Griesche, Hannes; Seifert, Patric; Ansmann, Albert; Baars, Holger; Barrientos Velasco, Carola; Bühl, Johannes; Engelmann, Ronny; Radenz, Martin; Zhenping, Yin (in review): Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during Polarstern cruise PS106. Atmospheric Measurement Techniques Discussions, https://doi.org/10.5194/amt-2019-434
Original version:
Griesche, Hannes; Seifert, Patric; Engelmann, Ronny; Radenz, Martin; Bühl, Johannes (2019): Cloudnet LWC during POLARSTERN cruise PS106 [dataset]. Leibniz-Institut für Troposphärenforschung e.V., Leipzig, PANGAEA, https://doi.org/10.1594/PANGAEA.900106
Further details:
Illingworth, Anthony J; Hogan, Robin J; O'Connor, E J; Bouniol, D; Brooks, M E; Delanoé, J; Donovan, D P; Eastment, J D; Gaussiat, N; Goddard, J W F; Haeffelin, Martial; Klein Baltink, H; Krasnov, O A; Pelon, J; Piriou, J-M; Protat, Alain; Russchenberg, H W J; Seifert, A; Tompkins, A M; van Zadelhoff, G-J; Vinit, F; Willén, U; Wilson, D R; Wrench, C L (2007): Cloudnet: Continuous Evaluation of Cloud Profiles in Seven Operational Models Using Ground-Based Observations. Bulletin of the American Meteorological Society, 88(6), 883-898, https://doi.org/10.1175/BAMS-88-6-883
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: 73.557710 * Median Longitude: 13.412315 * South-bound Latitude: 57.059650 * West-bound Longitude: 5.402260 * North-bound Latitude: 79.842110 * East-bound Longitude: 27.113210
Date/Time Start: 2017-05-24T00:00:00 * Date/Time End: 2017-07-18T00:00:00
Minimum Elevation: -512.0 m * Maximum Elevation: -46.6 m
Event(s):
PS106_0_Underway-11 * Latitude Start: 57.059650 * Longitude Start: 5.402260 * Latitude End: 79.842110 * Longitude End: 8.560310 * Date/Time Start: 2017-05-24T00:00:00 * Date/Time End: 2017-06-22T00:00:00 * Elevation Start: -46.6 m * Elevation End: -512.0 m * Campaign: PS106/1 (ARK-XXXI/1.1,PASCAL) * Basis: Polarstern * Method/Device: Remote sensing (Light detection and ranging, LiDAR) (LiDAR)
PS106_0_Underway-17 * Latitude Start: 77.971190 * Longitude Start: 12.573480 * Latitude End: 79.357890 * Longitude End: 27.113210 * Date/Time Start: 2017-06-23T16:15:00 * Date/Time End: 2017-07-15T20:00:00 * Elevation Start: -161.0 m * Elevation End: -286.0 m * Campaign: PS106/1 (ARK-XXXI/1.1,PASCAL) * Basis: Polarstern * Method/Device: Remote sensing (Light detection and ranging, LiDAR) (LiDAR)
Comment:
This is an updated version of this data set: https://doi.pangaea.de/10.1594/PANGAEA.900106
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Griesche, Hannes | |||
| 2 | DATE/TIME | Date/Time | Griesche, Hannes | Geocode | ||
| 3 | File name | File name | Griesche, Hannes | |||
| 4 | File format | File format | Griesche, Hannes | |||
| 5 | File size | File size | kByte | Griesche, Hannes | ||
| 6 | Uniform resource locator/link to file | URL file | Griesche, Hannes |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
220 data points