Core Facility JOYCE: Jülich ObservatorY for Cloud Evolution

j<s:1>利希云演化观测站（JOYCE, http://www.geomet.uni-koeln.de/joyce）的建立是为了更好地了解非均匀地形上云和降水的形成。JOYCE的总体技术目标是提供云和降水及其演变环境的长期、连续（近实时）和质量控制测量。在评估全球“气候允许”（~20-50公里）、数值天气预报（~1-10公里）和更小的时空尺度上的数值模式时，这种长期观测具有重要意义。JOYCE由云雷达、微雨雷达、微波辐射计或风激光雷达等垂直剖面传感器以及体感极化多普勒天气雷达对大气柱进行时间和空间高度分辨的测量。这些观测结果为改进大气模式中的云参数化方案提供了基础。因此，JOYCE作为dfg资助的核心设施遵循六个主要研究目标。维持标准化的观察程序。为了使JOYCE观测对各种应用具有吸引力，必须尽最大努力保证观测的连续性和质量控制。程序将被定义，以确保连续的最高质量的观察，最大限度地减少数据丢失，并提供自动质量控制和文件。确保并记录自动化数据生命周期。数据生命周期的定义将决定原始观测数据以何种方式转化为大气变量，以及如何、何时、何地存储这些数据，并通过数据库访问提供这些数据。调节JOYCE中心设施和x波段雷达的使用。该目标将调节对进行专门观测实验的可用仪器的使用。此外，还将确定安装新仪器的顺序。4)。规范JOYCE观测数据库的访问。将制定一项数据政策，根据哪些用户、何时以及在何种条件下能够获得JOYCE-CF数据。5)。创建一个最佳实践中心。将建立一个被动微波遥感观测和偏振x波段雷达校准/验证的“参考中心”。将开展讲习班和测量活动。创建一个网站，提供外联服务。JOYCE-CF网站将为仪器操作员和用户提供所有相关信息。将与积极参与JOYCE-CF的科学家合作组织外联活动。我们将为所有感兴趣的科学家和学校提供研讨会，形式包括工作坊、研讨会和实地考察

The Jülich Observatory for Cloud Evolution (JOYCE, http://www.geomet.uni-koeln.de/joyce) has been established in order to provide a better physical understanding of cloud and precipitation formation over heterogeneous terrain. The overall technical objective of JOYCE is to provide long-term, continuous (near-real-time) and quality controlled measurements of clouds and precipitation and the environment in which they evolve. Such long-term observations are of major importance when it comes to evaluating numerical models on global "climate permitting" (~20-50 km), numerical weather prediction (~1-10 km) and smaller spatial and temporal scales. JOYCE is composed of temporally and spatially highly resolved measurements of the atmospheric column by vertically profiling sensors like cloud radars, micro-rain-radars, microwave radiometers or wind lidars together with volume-sensing polarimetric Doppler weather radars. These observations provide the basis for improving cloud parameterizations schemes in atmospheric models. Thus, JOYCE as a DFG-funded core facility follows six major research objectives.1.) Sustainment of standardized observation procedures.In order to make JOYCE observations attractive for various applications, a best possible effort must be undertaken to guarantee continuous and quality controlled observations. Procedures will be defined to ensure continuous highest-quality observations, minimize data loss, and to provide an automatic quality control and documentation2.) Ensure and document automated data life cycle.The definition of a data life cycle will govern which and how the raw observational data is transformed to atmospheric variables and how, when and where they are stored and made available via database access.3.) Regulate access to JOYCE central facility and X-band radarsThis objective will regulate access to the available instruments for performing dedicated observational experiments. Additionally, a sequence for installing new instruments will be defined. 4.) Regulate access to JOYCE observational data base.A data policy will be developed on which users and when will be able to obtain JOYCE-CF data and under which conditions. 5.) Create a center for best practices. A "reference center" for passive microwave remote sensing observations and polarimetric X-band radar calibration/validation will be set-up. Workshops and measurement campaigns will be carried out 6.) Create a website and offer outreach.A JOYCE-CF website will be conceived containing all relevant information for instrument operators and users. Outreach activities will be organized in collaboration with the scientists actively contributing to JOYCE-CF. We will offer seminars to all interested scientists as well as schools in form of workshops, seminars and site tours