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instruments:mrrnya:mrrnya

Micro Rain Radar (MRR) at Ny-Ålesund

Mentor: Marek Jacob

Principle

The Micro Rain Radar (MRR) is a vertically pointing FM-CW (frequency modulated continuous wave) Doppler radar operating at K-band (24.1 GHz, 12.4 mm wavelength). The emitted radar signal (only 50mW transmitting power) is backscattered by falling hydrometeors (rain, graupel, snow). From the Doppler spectra the radar reflectivity factor (Ze) and the terminal fall velocity distribution can be derived. The range resolution can be varied from 10 to 200m which determines together with the 30 range gates the system's maximum height range of 300-6000 m. In case of rain the Doppler spectra can be used to derive vertical profiles of microphysical rain properties like drop size distribution and rain rate. Recently, the MRR system was also studied for its potential to observe snowfall (Kneifel et al. 2011). Also an improved MRR algorithm most suitable for snowfall observations has been developed at IGMK link and is also freely available here: IMProToo - Improved Mrr Processing Tool.

Instrument


METEK MRR (24.1 GHz radar) at AWIPEV Ny-Ålesund, Svalbard, on the roof of the atmospheric observatory.

History

Period Place Project
27 April 2017 - today AWIPEV Ny-Ålesund, Svalbard (AC)3

Data

  • If you are interested in receiving data please contact Kerstin Ebell

Specifications

Parameter Specification Current Settings
Frequency 24.1 GHz
Wavelength 12.4 mm
Radar Type FM-CW
Transmit Power 50 mW
Receiver Single Polarization
Power consumption (radar) 25 W
Total power cons. incl heating 525 W
Max. range 6 km 930 m
Min. range 10 m 30 m
Range Resolution 10-200 m 30 m
No. of range gates (fixed) 31
Temporal resolution 10 s 10 s, 60 s (for averaged data)
Antenna diameter 0.5 m
Beam width (2-way, 6 dB) 1.5°
instruments/mrrnya/mrrnya.txt · Last modified: 2017/09/12 08:25 by kerstin