DQRID : D070411.4
Start DateStart TimeEnd DateEnd Time
09/27/2006000004/11/20072300
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Subject:
SGP/RWP/I3 - no usable moments data available
DataStreams:sgp915rwpwindmomI3.a0, sgp915rwptempmomI3.a0
Description:
When the upgrade to the Central Facility rwp was installed, the interpretation of the 
configuration file changed  such that it became necessary to explicitly require that moments 
data be saved within the raw spectral data file.  Previously this was not true.   The 
ingest operates in such a way that it just goes a certain number of bytes into the spectral 
data and takes the following section.  Thus bogus moments data files were bing ingested 
that had essentially no usable information insofar as moments data are concerned.  Thus 
there are no usable moments data files from this time period.  At this time I have not been 
able to determine a method to recreate the raw moments files from the spectral data in 
any straightforward manner that would result in files with the precise format as presently used.
Suggestions: 
null
Measurements:sgp915rwptempmomI3.a0:
  • lon(lon)
  • Spectral Width: vert velocity(specw)
  • Time offset from base_time(time_offset)
  • Height(height)
  • Signal-to-noise-ratio(snr)
  • Beam 0 virtual temperature(virtual_temp)
  • Acoustic Spectral Width(sspecw)
  • -180.0 - +180.0(alt)
  • Mean atmospheric vertical velocity(mdf)
  • base time in epoch(base_time)
  • Mean Sound Speed(smdf)
  • Sample Rate(sampr)
  • 1000 * log10(noise signal level)(noise)
  • Signal to Noise Ratio: acoustic(ssnr)
  • North Latitude(lat)
  • Range gate spacing(rgs)
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sgp915rwpwindmomI3.a0:
  • Ave Time per Average Spectra. Also known as dwell.(spcavetime)
  • Signal-to-noise-ratio(snr)
  • Vertical FFT Bandwidth(vband)
  • Number of pulse code bits(pcbits)
  • Number of Coherent Samples/Spectral Point(ncoh)
  • Spectral Width: vert velocity(specw)
  • Pulse repetition frequency(prf)
  • Number of Valid Heights(nheight)
  • Array of heights for each sample time(height_t)
  • Individual Spectrum Integration Time(sitime)
  • Time Domain Integration Time(tditime)
  • -180.0 - +180.0(alt)
  • Interpulse period(ipp)
  • 1000 * log10(noise signal level)(noise)
  • Sample Rate(sampr)
  • Delay Time to 1st Gate(dly)
  • Beam Elevation Angle(elevation)
  • Mean atmospheric vertical velocity(mdf)
  • Radial Velocity Spectral Resolution(vsr)
  • Number of Individual Spectra/Average Spectrum(nspc)
  • Height of center of last range gate(rgl)
  • Beam Number(beam)
  • Oblique FFT bandwidth(oband)
  • Height Index(range_gate)
  • Range gate spacing(rgs)
  • Rx Bandwidth Switch Code(bswitch)
  • North Latitude(lat)
  • Time offset from base_time(time_offset)
  • Pulse length(plen)
  • lon(lon)
  • Height of Center of First Range Gate(rgf)
  • base time in epoch(base_time)
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