Task 1 of work package 3 is based on existing supersites (JOYCE (Jülich Observatory for Cloud Evolution), LACROS (Leipzig Aerosol and Cloud Remote Observations System), MOL-RAO (Lindenberg Meteorological Observatory- Richard Assmann Observatory), and CESAR (Cabauw Experimental Site for Atmopsheric Research).
The aim is maintaining a continuous data stream starting in 2007 (if possible) and extending it with most recent data at all supersites. The data provided will be microwave radiometer, cloud radar and lidar and auxiliary data, i.e. soundings or radiances. A publication describing the JOYCE site can be found here.
Task 3 will focus on the harmonization of continuous and sustainable data streams from the six supersite stations involved in the second phase of HD(CP)². Beside JOYCE, LACROS, CESAR, and RAO, there are the sites UFS (Umweltforschungsstation Schneefernerhaus) and BCO (Barbados Cloud Observatory). The main tasks will be to coordinate developments for harmonized ceilometer, microwave radiometer and cloud radar calibration and quality control procedures in collaboration with the instrument manufacturers and international partners, i.e. from ACTRIS and ARM-ASR. Additionally, further develop and implement observational uncertainty characterisation is necessary. This task will also coordinate the measurement configuration of the different instruments.