DWD Radar Products
PI international radar composite (rad_rapi)
- international radar reflectivity (dBZ) composite
- covers central Europe (1440 km * 1440 km)
- 6 reflectivity classes
- temporal resolution: 15 min
- spatial resolution: 4 km
RY national radar composite (rad_rary)
- radar-derived precipitation analysis
- only in the overlap area of different radars the QY quality information is used (to decide which radar's information is less flawed)
- covers Germany (900 km * 900 km)
- temporal resolution: 5 min
- spatial resolution: 1 km
QY (radar quality product rad_raqy)
- radar quality product containing quality flags that indicate errors and quality problems identified in the quality check
- covers Germany (900 km * 900 km)
- temporal resolution: 5 min
- spatial resolution: 1 km
LMK radar product (rad_ralh)
- national quality-checked radar precipitation analysis on LMK grid for latent heat nudging (only summer)
- combines RY with QY information, i.e. at gridpoints where QY indicates quality problems its value is set to “error”
- temporal resolution: 5 min
- spatial resolution: 2.8 km
- filename convention: lafyyyymmddhh
- each hourly file contains 12 5-min precipitation sum records
RADOLAN (rad_rarw)
- radar-derived precipitation analysis
- online calibrated to ground observations to give 1-h precipitation sums
- available (nearly) immediately
- undefined in case of missing radar data, therefore not suitable as estimate for long-term precipitation sums
- spatial resolution: 1 km