1. Proposal to MANE_VU: Extensions to the VIEWS: CATT Analysis Tool Full Proposal Text Full Proposal Text R. Husar, PI, CAPITA Revised, October 8, 2003 The goal of the proposed web-based tool is to facilitate air mass transport analysis for the speciated aerosol data contained in the VIEWS database. The CATT analysis tool is intended for use by the RPO analyst community.

2. Background The Visibility Information Exchange Web System (VIEWS) is an RPO-supported online system for visibility-related data operated at CIRA, Colorado State U., The proposed Combined Aerosol Trajectory Tool (CATT), is a receptor-oriented analysis package that aggregates back-trajectories for selected receptor site(s) and for specific chemical conditions, such as hi/low sulfate. CATT uses the VIEWS database as the primary source of chemical data and a pre-computed trajectory database for the selective trajectory aggregations. The resulting airmass transport/residence time pattern indicates the geographic transport regions associated with the selected chemical conditions. The CATT web-tool will be suitable for use by the RPO analyst community requiring only a web browser. This project phase consist of following specific tasks: –Connect the current CATT tool to the VIEWS aerosol chemistry database; –Implement a gridding module for spatial interpolation of point data and contour displays –Implement support for the superposition/display of multiple GIS map layers –Maintenance of the CATT web server for one year.

3. CATT for VIEWS and other Aerosol Datasets Background: A combined aerosol trajectory aggregation tool, CATT, has been developed for easy aggregation and browsing of airmass histories associated with specific aerosol conditions. The CATT tool, is now supported (MANEVU/MRPO) for 16 stations and for pre-calculated residence times. Proposal: We propose to extend the CATT tool by allowing the use of the entire VIEWS chemical database and other remotely accessible datasets to set the aerosol filter conditions. Budget: $20k Implementation and Status: The technologies or remotely accessing the VIEWS and other databases and performing chemical filtering queries to VIEWS has been tested for feasibility. The prototype CATT tool for 16 sites is now in beta testing by the MANEVU/MRPO group. This extension to CATT has was option on the contract but funds were not available. R. Husar will lead this effort in close cooperation with B. Schichtel of CIRA/VIEWS. Deliverables: The main deliverable of this sub-project is a fully functioning CATT aerosol transport anlysis tool applicable to the entire VIEWS database as well as to other chemial/trajectory data pairs. It is assumed that the companion Trajectory Aggregation Tool, TAT, will be developed under an EPA small grant.Trajectory Aggregation Tool, TAT

4. Extending CATT to VIEWS Current MANEVU/MRPO Project Proposed Extension to VIEWS ‘On the fly trajectory aggregation for 150+ VIEWS sites (supported by EPA- CATT-TAT) 16 sites 180+ VIEWS sites over the entire US; 100+ ‘species’ 15 ‘species’

5. CATT Tool Implementation Further information about CATT is available, including tesing.available The tool displays the incremental transport probability for specified query conditions Combined Aerosol Trajectory Tool - CATT Query Conditions

6. Spatial Interpolation and Rendering Tool for VIEWS Background: A tool for transforming point measurement data to a continuous surface would aid the analysis of VIEWS data and their comparison with other data from monitoring, emissions, satellite as well as with model results Proposal: We propose to incorporate spatial interpolation and rendering facilities into the Dvoy data access and browsing system. The Gridder/Contourer tool will be applicable to the spatial datasets in VIEWS as well as from other monitoring networks. Budget: $15k Implementation and Status: The gridder/contourer technology has been developed at CAPITA over the past 15 years. Stefan Falke, who did his PhD dissertation on spatial interpolation will lead the effort. Deliverables: The deliverable of this sub-task is is a web-based Gridder/Contourer that can access VIEWS to retrieve spatial point measurement data and perform advances spatial interpolations. The outputs from the Gridder/Contoures will be suitable for import into GIS and other processing/rendering software.

7. Spatial Interpolation and Rendering Spatial Interpolation Settings Interpolate PM25 Conc. The spatial interpolation operator transforms a data table to a gridded map using nearby measurement data. The gridding and contouring of the selected data is done ‘on the fly’ by the user Point Rendering PM25 Conc. Grid PM25 Contour Rendering

8. Gridding: Accounting for Data Density The advanced spatial interpolation algorithm accounts for the variations in point data density inherent in air quality monitoring networks. The resulting interpolated estimates are more representative of the urban and rural differences in air pollutant concentrations. Low Point Data Density High Point Data Density

9. Rendering: Rectangular, Contour, Lines Rectangular Grid Cells Contoured Grid Cells Contoured Grid Lines A flexible display rendering of gridded data will be implemented to accommodate different applications. The flexibility enables clearer presentation and easier comparison with other data.

10. Dynamic Maps for VIEWS Background: The Visibility Information Exchange Web System, VIEWS is an online exchange of visibility data, research, and ideas to support the Regional Haze Rule. The VIEWS system also provides spatio-temporal summaries of key haze parameters. Proposal: We propose to enhance the current image-based VIEWS spatial data delivery system by a dynamic mapping module for flexible presentation of spatial data. Budget: $30k Implementation and Status: The Voyager data browser has a flexible mapping module that can be incorporated into the VIEWS delivery system. For the past year, B. Schichtel of CIRA/VIEWS and R. Husar/CAPITA have been planning the mapping module transfer but the resources were not available. Deliverables: A web-based program to access VIEWS data, dynamically render the data as points or contours, and overlay the VIEWS data on geographic and temporal data layers for other providers.

11. VIEWS and ‘Voyager’ Data Presentation VIEWS data summaries are mostly pre-calculated The spatial images are pre-rendered and saved The data layers, zoom, labels etc are set Voyager accesses most data from the database The spatial images are generated at use time Data layers, zoom, labels etc are set by user

12. Superposition of VIEWS and other Data with Dynamic Mapping Satellite Aerosol Optical Depth Satellite Reflectance Global Aerosol Model Digital Elevation

13. CATT Server Hardware and VIEWS Connectivity Server hardware and software for the delivery of the above Budget: $10K VIEWS Data VIEWS Business Logic Auxiliary Data VOYGER Browser VIEWS & Auxiliary Data Analysis Tools & Delivery VIEWS Viewer Data Replication Software Replication VIEWS Extensions Analysis & Aux. Data Viewer Proposed CATT server connected to CIRA and CAPITA CAPITA Server CIRA Server

14. Schedule Project Period: September 2003 – June 2004 Begin CATT-Views testing: December 2003 Public Testing: March-June 2004 Project Completion: June 30, 2004

15. Budget and Schedule by Task 1.Combined Aerosol Traj. Tool (CATT)$30KSep 1, 2003 – Jan 1, 2004 2.Spatial interpolation (gridding) tool$15KSep 1, 2003 – Mar 1, 2004 3.Dynamic mapping for VIEWS$30KJan 1, 2004 – Jun 1, 2004 4.Server hardware and software $10KJan 1, 2004 – Aug 1, 2004