[291] - Investigation of the diurnal cycle of stratocumulus clouds at the northern coast of Chile

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Citation
Westbrook, S., Schween, J., Löhnert, U., 2019. Investigation of the diurnal cycle of stratocumulus clouds at the northern coast of Chile. The coastal fog geo-ecosystems in the Chilean-Peruvian Desert: understanding biosphere-atmosphere interactions, November 25 - 27, 2019, Alto Patache, Atacama UC Research Station, Chile. Accessed from https://www.crc1211db.uni-koeln.de/data.php?dataID=291 at 2021-03-01.
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Identification
Title(s):Main Title: Investigation of the diurnal cycle of stratocumulus clouds at the northern coast of Chile
Description(s):Abstract: Marine stratocumulus clouds of the eastern Pacific play an essential role in the Earth's energy and radiation budget. Parts of these clouds off the west coast of South America form the major source of water to the hyper-arid area at the northern coast of Chile. Within the DFG collaborative research center 'Earth evolution at the dry limit', for the first time, a long-term study of the vertical structure of clouds and their environment governing the moisture supply to the coastal part of the Atacama is available. Three state of the art ground based remote sensing instruments were installed for one year at the airport of Iquique/Chile (20.5°S, 70.2°W, 56m a.s.l.) in close cooperation with Centro del Desierto de Atacama (Pontificia Universidad Católica de Chile). The instruments provide vertical profiles of wind, turbulence and temperature, as well as integrated values of water vapor and liquid water. Instrument synergy provides vertical cloud structure information. We observe a land-sea circulation with a super-imposed southerly wind component. Highest wind speeds can be found during the afternoon. Clouds show a distinct seasonal pattern with a maximum of cloud occurrence during winter (JJA) and a minimum during summer (DJF). Clouds are higher and vertically less extended in winter than in summer. Liquid water path shows a diurnal cycle with highest values during night and morning hours and lowest values during noon. Furthermore, the clouds contain much more liquid water in summer. The turbulent structure of the boundary layer, together with the temperature profile, can be used to characterize the mechanism driving the cloud life cycle.
Responsible Party
Creator(s):Author: Sarah Westbrook
Author: Jan Schween
Author: Ulrich Löhnert
Publisher:CRC1211 Database (CRC1211DB)
Topic
CRC1211 Topic:Climate
Related Sub-project(s):A1
Subject(s):CRC1211 Keywords: Meteorology, Field Experiments, Remote Sensing
GEMET Inspire Spatial Data Theme: Atmospheric conditions, Environmental monitoring facilities
GEMET: meteorological research, fog, cloud, wind
Topic Category:ClimatologyMeteorologyAtmosphere
File Details
File Name:chile_poster_november_2019.pdf
Data Type:Text
File Size:1521 kB (1.485 MB)
Date(s):Other: 2018-03-28 (start of presented Data)
Other: 2019-03-05 (end of presented Data)
Other: 2019-11-25 (Poster presented)
Mime Type:application/pdf
Data Format:PDF (1.5)
Language:English
Status:Completed
Constraints
Download Permission:OnlyCRC1211
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Geographic
North:-20.53954
East:-70.17729
South:-20.53954
West:-70.17729
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Presentation
Presenter:Jan H. Schween
Presentation Date:2019-11-25
Presentation Type:Poster
Event Name:The coastal fog geo-ecosystems in the Chilean-Peruvian Desert: understanding biosphere-atmosphere interactions
Event Type:Workshop
Event Location:Alto Patache, Atacama UC Research Station, Chile
Event Period:25th of November, 2019 - 27th of November, 2019
Event Url:http://blank.org/
Metadata Details
Metadata Creator:Jan Schween
Metadata Created:2019-12-02
Metadata Last Updated:2020-09-21
Subproject:A1
Funding Phase:1
Metadata Language:English
Metadata Version:V43
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