1. Exploration of PM networks and
data over the US: AQS and VIEWS
Presented at CAPITA group seminar,
2011-04-21
Li Du and Ratish Menon
CAPITA, St Louis 1/21
2. Conceptual framework of aerosol characterization
http://datafedwiki.wustl.edu/index.php/2011-01-12:_The_conceptual_framework_of_aerosol_characterization
2
3. Coverage of datasets
6 day
EPA FRM PM10
3 day
1 day
6 day 3 day
EPA FRM PM25
1 day
VIEWS aerosol
chemistry
Continuous
monitoring
3
Data count per station Station count time series
5. Data processing scheme
Raw data Aggregates Spatially Moving
data from all aggregated window
Select spatial the stations data is smoothing
and temporal in the aggregated operator for
coverage selected over time spatially and
spatial range temporally
coverage aggregated
5
data
6. Distribution function
Big Bend National Park, TX 95th percentile
84th percentile
average
50th percentile
16th percentile
6
11. Assessment of spatial and temporal variation
Spatial variation coefficient of variation average average
Temporal variation average average coefficient of variation
11
13. AQS_H data network assessment classified by types of instrument
Beta attenuation
TEOM
Nephelometer
FDMS
13
Data count per station Station count time series
