Journal Article

FZJ-2015-00871

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png JOYCE: Juelich Observatory for Cloud Evolution

Löhnert, U. (Corresponding Author)FZJ* ; Schween, J. H. ; Acquistapace, C. ; Ebell, K. ; Maahn, M. ; Barreraverdejo, M. ; Hirsikko, A.FZJ* ; Bohn, B.FZJ* ; Knaps, A.FZJ* ; O'connor, E. ; Simmer, C. ; Wahner, A.FZJ* ; Crewell, S.

2014
ASM Boston, Mass.

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Please use a persistent id in citations: http://hdl.handle.net/2128/20705  doi:10.1175/BAMS-D-14-00105.1

Abstract: The Jülich Observatory for Cloud Evolution (JOYCE), located at Forschungszentrum Jülich in the most western part of Germany, is a recently established platform for cloud research. The main objective of JOYCE is to provide observations, which improve our understanding of the cloudy boundary layer in a midlatitude environment. Continuous and temporally highly resolved measurements that are specifically suited to characterize the diurnal cycle of water vapor, stability, and turbulence in the lower troposphere are performed with a special focus on atmosphere–surface interaction. In addition, instruments are set up to measure the micro- and macrophysical properties of clouds in detail and how they interact with different boundary layer processes and the large-scale synoptic situation. For this, JOYCE is equipped with an array of state-of-the-art active and passive remote sensing and in situ instruments, which are briefly described in this scientific overview. As an example, a 24-h time series of the evolution of a typical cumulus cloud-topped boundary layer is analyzed with respect to stability, turbulence, and cloud properties. Additionally, we present longer-term statistics, which can be used to elucidate the diurnal cycle of water vapor, drizzle formation through autoconversion, and warm versus cold rain precipitation formation. Both case studies and long-term observations are important for improving the representation of clouds in climate and numerical weather prediction models.

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Contributing Institute(s):

1. Troposphäre (IEK-8)
2. Sicherheit und Strahlenschutz;Umgebungsüberwachung,Meteorologie (S-UM)

Research Program(s):

1. 233 - Trace gas and aerosol processes in the troposphere (POF2-233) (POF2-233)

Appears in the scientific report 2014

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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