SCOS97-NARSTO Data Analysis Conference
SCOS97-NARSTOUpper-Air Meteorological Data
Wind / RASS ProfilerProcessing / Objective QC
Bob WeberNOAA/ETL
Boulder, Colorado
Rip Off of Robert Baxter
SCOS97-NARSTO Data Analysis Conference
Wind / RASS ProfilerData Collection
June - October 1997
26 Sites ARB VCAPCD SCAQM SDAPCD USAF STI NOAA
SOP Real-Time Meteorological Products
Quality Control
Radar Doppler Spectral Moments
Post Processing / Quality Control
Radar Doppler Spectra
Post Processing / Quality Control
SCOS97-NARSTO Data Analysis Conference
On-Line Real-TimeMeteorological Products
First Look Winds and TemperaturesRadar DiagnosticsIncomplete ProcessingInadequate Quality ControlUnreliable for Critical ApplicationsRequires Post Analysis
SCOS97-NARSTO Data Analysis Conference
Wind / RASS ProfilerOperations /
Data Collection
Radar Spectral MomentsMultiple Antenna Beams (3 - 5)Time Sampling ~ 1 MinuteSpatial Sampling ~ 50-100 MetersDoppler Velocity Spectral Signal Strength Spectral Signal Doppler Broadening
SCOS97-NARSTO Data Analysis Conference
Wind / RASS ProfilerPost Processing /
Quality ControlHourly / Daily
Contamination Rejection Noise, RFI, birds, ground clutter ...
Objective Quality Control Time-Height Consistency
Hourly-Averaged Radar Spectral Moments
Meteorological Products
SCOS97-NARSTO Data Analysis Conference
Time-Height Consistency
Objective Analysis Compare Data with Interpolated Value using neighbors in time and in height
Quality Control Recognize Patterns of Continuous Data over time and over height (hourly, daily)
SCOS97-NARSTO Data Analysis Conference
“Met 0” hourly QC > hourly average > daily QC > Correct Vertical Motion > Met Products
“Met 1” * Correct Vertical Motion > hourly QC > hourly average > daily QC > Met Products
Meteorological Noise, Radar Signal Contamination
? - choose higher objective QC value
- choose neither
- use other subjective criteria
Objective / Subjective
SCOS97-NARSTO Data Analysis Conference
Meteorological Noise
Small-Scale Motion Precipitation, Convection, Waves, Fronts, …
Complex Terrain Land-Sea, Mountains, Land Use, …
Adverse Effects on Performance Wind/RASS Profiler
Models
SCOS97-NARSTO Data Analysis Conference
Final Data Set
Pacific Standard TimeCorrection for Antenna OrientationMerged High and Low modesQC Codes
SCOS97-NARSTO Data Analysis Conference
QC Codes
QC = 0 valid
= 5 missing
= 6 erroneous ( > 1 m/s or 10%, 1 Deg C )
= 7 suspect ( Objective QC )
= 8 invalid ( Objective QC )
= 9 no data
SCOS97-NARSTO Data Analysis Conference
1:00 Jim Pederson (ARB) Characterization of Upper Air Meteorology Conditions on IOP Days
1:15 Clinton MacDonald (STI) STI Analysis of 1997 Upper Air Met Data in SoCAB
1:30 Bob Weber (NOAA) Interpreting Data from a RWP/RASS Network
1:15 Bob Baxter (Parsons) Quality Assurance of Upper Air Met Data
2:20 to 2:30 Refreshment break for ten minutes
2:30 Clinton MacDonald (STI) Spatial and Temporal Observations of the Planetary
Boundary Layer During Ozone Episodes in Southern California
2:50 Robert Bornstein (SJSU) The 4-7 August SCOS97 Ozone Episode: Comparisons between
Observations and MM5 Simulations
3:15 to 3:20 Refreshment Break
3:20 Clinton MacDonald (STI) Moderator-Roundtable on Use of Aloft Meteorological Data: Lidar,
Radar Wind Profiler Radio Acoustic Sounding Networks, Sodar
Networks (60M)
4:20 Session III Concludes
SCOS97-NARSTOData Analysis Conference
13 February, 2001 Day 1-1:00 to 4:20 pmSession III: Upper Air & Other Meteorological Data
SCOS97-NARSTO Data Analysis Conference
Measure Winds ????
1.3-1.7 m/s Clear Air co-located wind profilers (Strauch et al., 1987)2-4 m/s Precipitation co-located wind profilers (Wuertz et al., 1988)2.5 m/s 2 years wind profiler / rawinsonde (Weber & Wuertz, 1989)3.1 m/s co-located rawinsondes (Hoehne, 1980)