Meteorology and Air Quality Modeling for the 2012 24-Hour PM2.5 Plan for the San Joaquin Valley

This page last reviewed December 05, 2012

This page contains the results for the meteorology and air quality simulations conducted by the staff of Air Resources Board in support of the 2012 24-hour PM2.5 Plan for the San Joaquin Valley nonattainement area.  The base year was 2007 and the future year was 2019.  Results are presented for the first and fourth quarters.  The Draft Modeling Protocol contains detailed information on how the modeling was conducted (This document will open in a new tab or window).

Meteorology Modeling Results (Mesoscale Model 5):

Temporal Analyses:  January February March October November December

Hourly model results of wind speed, wind direction, temperature, relative humidity, and solar radiation near the surface are compared against hourly surface observations.

Statistical Analyses:  January February March October November December

Model results are plotted against observations in a scatter diagram, and frequency distributions of observations and model results are drawn as histograms across x and y axes, respectively, for wind speed, wind direction, temperature, relative humidity, and solar radiation.

Air-Quality Modeling Results - PM2.5 (Community Multi-scale Air Quality Model)

Design Value Calculations

The future year design values calculated following the US EPA Guidance.  These documents will open in a new tab or window.

BEP BAK COP VCS FSH
FSF CLO MRM M14 SOH

Model Performance Statistics:  

Quarter-1 and Quarter-4  (These documents will open in a new tab or window)

Plots for Bakersfield - 5558 California Avenue

Plots for Fresno - 1st Street

Plots for Modesto - 14th Street 

Plots for Visalia - North Church Street


For additional information please contact 

Mr. John DaMassa, Chief

Modeling and Meteorology Branch
Planning and Technical Support Division
California Air Resources Board
P.O. Box 2815
Sacramento, CA, 95812

(916) 324-7167

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