TY  - JOUR
AU  - Löhnert, U.
AU  - Schween, J. H.
AU  - Acquistapace, C.
AU  - Ebell, K.
AU  - Maahn, M.
AU  - Barreraverdejo, M.
AU  - Hirsikko, A.
AU  - Bohn, B.
AU  - Knaps, A.
AU  - O'connor, E.
AU  - Simmer, C.
AU  - Wahner, A.
AU  - Crewell, S.
TI  - JOYCE: Juelich Observatory for Cloud Evolution
JO  - Bulletin of the American Meteorological Society
VL  - 96
IS  - 7
SN  - 1520-0477
CY  - Boston, Mass.
PB  - ASM
M1  - FZJ-2015-00871
SP  - 1157–1174
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000359855000001
DO  - DOI:10.1175/BAMS-D-14-00105.1
UR  - https://juser.fz-juelich.de/record/187197
ER  -