DQRID : D070809.2
Start DateStart TimeEnd DateEnd Time
07/26/2007130707/26/20071400
07/30/2007122207/30/20071300
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Subject:
FKB/WACR/M1 - Chaff released in Murg valley
DataStreams:fkbwacrM1.b1, fkbwacrM1.00, fkbwacrspecmomM1.00
Description:
As part of the research activities associated with the COPS field campaign, the research 
center at Karlsruhe released aluminum chaff (2.5 cm in length) in the Murg Valley in order 
to study atmospheric diffusion.  It is possible that some of this chaff drifted over the 
AMF site and thus may have influenced the radar observations (as spurious echos). 

20070817 Comment from WACR Mentor, Kevin Widener:
I reviewed the data from the two chaff releases and I'm unable to see any effect in either 
co-polar or cross-polar backscatter signals.  I also looked at the MPL and ceilometer 
and could not see anything that might be chaff. {Editors note: The DQR quality color was 
changed to "Transparent".}
Suggestions: 
Users should be aware of the chaff release event when using these reflectivity data.
Measurements:fkbwacrM1.b1:
  • Chiller supply temperature(Temp_Chiller_Supply)
  • Outside temperature(Temp_Outside)
  • Extended Interaction Klystron Amplifier temperature(Temp_EIKA)
  • Hot load power(PowerHotLoad)
  • Ambient load power(PowerAmbientLoad)
  • Calculated Noise(Noise)
  • Chiller temperature(Temp_Chiller)
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • MMCR Spectral Width(SpectralWidth)
  • status flag(wacr_status)
  • Hot load physical temperature(Temp_Hot)
  • base time in epoch(base_time)
  • Antenna top temperature(Temp_Antenna_Top)
  • Computer enclosure temperature(Temp_Computer_Enclosure)
  • Polarization mode. 0 = copol, 1 = xpol(Polarization)
  • lon(lon)
  • Antenna bottom temperature(Temp_Antenna_Bottom)
  • Modulator temperature(Temp_modulator)
  • Time offset from base_time(time_offset)
  • Chiller return temperature(Temp_Chiller_Return)
  • Future temperature(Temp_Future)
  • North Latitude(lat)
  • Modulator control temperature(Temp_Modulator_Control)
  • Detected Pulse(txpower)
  • Low noise amplifier temperature(Temp_LNA)
  • Transmit driver power sampled by receiver(PowerTransmitDriver)
  • Ambient temperature of radar front end components(Temp_ambient)
  • Reflectivity(Reflectivity)
  • Range Heights (center of radar sample volume)(heights)
  • time_in_seconds_since_volume_start(time)
  • Signal to Noise Ratio(SignalToNoiseRatio)
  • -180.0 - +180.0(alt)
more
fkbwacrspecmomM1.00:
  • (Raw data stream - documentation not supported)
more
fkbwacrM1.00:
  • (Raw data stream - documentation not supported)
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