June 2009
Front Matter
Training
41
IMPROVE Sampling
•Interagency Monitoring of Protected Visual Environments (IMPROVE) program provides PM2.5 speciated and mass measurements
in 156 Class I areas (national parks
and wildness areas). Speciated PM2.5 
metals are the only toxics measured
in this network.
•Data are available in AQS.
•IMPROVE data can also be
accessed from the VIEWS*
web site. •IMPROVE also provides site photos and local topographical maps which are very useful for data analyses.
*VIEWS: Visibility Exchange Web System
IMPROVE Site Locations
At the time of the national analysis, these data were not available in AQS.
Raw data and various aggregates can be obtained in a
variety of output formats (ASCII, HTML, XLS etc.).
All data from the inception of the IMPROVE network in
1988 are currently available.
To download data or get more information see http://vista.cira.colostate.edu/views/
User-input mapping and plotting tools are available to visualize trends, spatial patterns, back trajectories and metadata (i.e., site locations).