Dual Polarization Radiometer (DPR)

Principle

The Dual-Polarization Radiometer (DPR) measures brightness temperatures at the frequencies of 90 and 150 GHz. DPR is sensitive to particle orientation since it observes the brightness temperature difference between the vertical and horizontal polarization channels at 150 GHz, and it is especially important for the retrievals of particle shape and orientation with polarization observations. DPR also has a high sensitivity to the supercooled liquid water in clouds due to the high-frequency window channels.

Instrument

RPG DPR at UFS, Zugspitze, Germany.

Data

Quicklook archive

Current measurements:

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    <a href="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/ufs/dpr/l1/latest_ufsd_l1.png" target="_blank">
    <img src="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/ufs/dpr/l1/latest_ufsd_l1.png" width=450>
    </a> click to enlarge

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History

Date	Titel	Project
08/2012 - present	UFS, Zugspitze, Germany	TOSCA
11/2011 - 03/2012	CARE, Egbert, Ontario, Canada	GCPEx & ADMIRARI
12/2007 - 09/2011	UFS, Zugspitze, Germany	TOSCA
05/2007 - 10/2007	Heselbach (Black Forest)	COPS & GOP
04/2006 - 02/2007	UFS, Zugspitze, Germany

Webcam

Webcam DPR

Specifications

Parameter	Specification
Channel Frequencies [GHz]	90; 149.9 (V pol.); 150.1 (H pol.)
Channel band-widths [MHz]	2000
Optical Resolution (HPBW)	2°
Side-lobe level	< 30dBc
Size (mm x mm x mm)	630x360x900
Power Consumption	<120 Watts average, 300 Watts peak for warming-up (without dew blower heater)
Weight (kg)	~120

AWARES ExOb Wiki

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