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

Site Locations

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)

SCOS97-NARSTO Data Analysis Conference

SCOS97-NARSTO Data Analysis Conference