JOYCE Instrumentation

The majority of the JOYCE instruments is positioned on the roof of the Institut für Energie und Klimaforschung (IEK-8) at Forschungszentrum Jülich (50°54'30.77'' N, 6°24'48.73" E, 111 m MSL). The core instruments of JOYCE-CF can be found below. Further instrumentation on the same observation platform includes a Pluvio rain gauge, a meteorological station (temperature, pressure, wind, humidity) and a MAX-DOAS system for trace gases and aerosol operated by IEK-8. All instruments are described below.

The two X-Band radars are located at Sophienhöhe (JuXPol, 4 km north-east of JuCol) as well as at the Meteorological Institute of the University of Bonn (BoXPol).

 

Data access

Current and past JOYCE measurements can be found in our quicklook browser. Current radar images and animations can be found at the Meteorological Institute of the University of Bonn. Quicklooks from CloudNet processed measurements and products can be found on the CloudNet database.

For direct data access please go to the SAMD archive where many datasets of JOYCE-CF can be found. More data will follow in future. For datasets that cannot be found at SAMD, please contact the JOYCE-CF team

 

Description of instruments

Atmospheric Emitted Radiance Interferometer AERI
measures highly spectrally resolved infrared radiation derivation of cloud particle size, cloud optical depth, temperature and humidity profile details and measurement time series can be found here
Doppler Lidar
transmits and receives light pulses in the mear infrared spectral region retrieves the wind vector (wind direction and velocity) up to 2-3 km height details and measurement time series can be found here
Ceilometer CHM15k
trasmits and receives light pulses in the near infrared up to 15 km height derivation of cloud base, detection of boundary layer height and aerosol layers details and measurement time series can be found here
Ceilometer CT25k
trasmits and receives light pulses in the near infrared up to 7.5 km height derivation of cloud base, detection of boundary layer height and aerosol layers details and measurement time series can be found here
Cloud Radar JOYRAD-35
transmits and receives pulses of microwave radiation (35 GHz) in arbitrary direction derivation of cloud thickness and cloud structure details and measurement time series can be found here
Cloud Radar JOYRAD-94
transmits and receives continuously at 94 GHz pointing zenith derivation and observation of cloud structure and micro-physical processes   details and measurement time series can be found here
Microwave Radiometer HATPRO & IR Pyrometer
measures microwave radiation emitted by the atmosphere itself (HATPRO) measures atmospheric broadband IR radiation (pyrometer) derivation of cloud liquid water path, temperature profile, humidity profile, cloud base temperature details and measurement time series can be found here
Micro Rain Radar MRR
measures vertical profiles of the Doppler spectrum of precipitation derivation of vertical profiles of drop size distribution and from this precipitation rates details and measurement time series can be found here
Multi-Filter Rotating Shadow Band Radiometer (MFRSR)
measures solar radiation at different wavelengths derivation of aerosol optical depth and information on aerosol particle size as well as properties of liquid clouds (cloud optical depth, effective radius) details and measurement time series can be found here
Precipitation Sensor Disdrometer
Parsivel (optical): measures size and fall velocity of rain drops at the surface derivation of drop size distribution and from this the surface precipitation rate details and measurement time series can be found here in addition: Pluvio precipitation gauge (click here)
Radiation Sensors
pyranometer for downwelling solar radiation (direct and diffuse) pyrgeometer for downwelling thermal radiation actinic flux measurments (UV) for derivation of photolysis-frequencies details and measurement time series can be found here
Sun Photometer CIMEL
sun photometer for measuring aerosol optical depth details and measurement time series can be found here
Tower for Meteorological Measurements(120 m)
temperature, humidity and wind measurements at 8 heights upwelling and downwelling flux density measurements at 2 heights precipitation measurements at the surface details and measurement time series can be found here
Total Sky Imager TSI
takes picture of the total upper hemisphere provides a per-pixel classification of optically thin and thick clouds derivation of cloud cover details and measurement time series can be found here

X-Band Precipitation radars (BoXPol and JuXPol)
measure 3D polarimetric variables like reflectivity, phase shift, etc. derivation of quantitative precipitation estimates details and measurement time series can be found here