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A Data Management System (DMS) for Air Quality Management Agencies

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Presentation on theme: "A Data Management System (DMS) for Air Quality Management Agencies"— Presentation transcript:

1 A Data Management System (DMS) for Air Quality Management Agencies
Prepared by: Mark Stoelting Bay Area Air Quality Management District San Francisco, CA and Eric Gray Sonoma Technology, Inc. Petaluma, CA Presented at: U.S. EPA 2008 National Air Quality Conference Portland, OR April 6-9, 2008

2 DMS: Why, What, How, Who Why build a DMS? What is it?
How does DMS work? What are the DMS capabilities? Who is involved? Who paid for DMS? Where is it going?

3 Why the DMS? New technology: instruments, communications, data access
Real-time data access Improve data quality (QC checks) Graphical data reviewing tools Minimize/eliminate need for paper Track instruments and performance Shared need by all monitoring agencies

4 What is DMS? Data Management System
Database to ingest, process, export data Archive Programmable database with optional features Process sub-hourly data (1 minute) Collect instrument metadata Track instruments and performance (OpCodes) Automatic Quality Checks Export (AirNow, AQS) Notification ( , process controls)

5 Simple Data Structure INSTRUMENT (optional, assigned in database) {OpCode} SITE PARAMETER DATE_TIME DATA Site,Parameter,Date_Time,OpCode,Data,[alpha_data] 7011,CO_chamt,10/05/ :16,0, ,

6 Sites, Parameters, Instruments
Establish Monitoring Sites Create Parameters Create Instruments

7 Assign Parameters to Instruments and Instruments to Sites
Assign Instruments to Sites

8 Automated Quality Checks/Export
Ambient Air Quality Data Raw Data Range checks Instrument checks AIRNow Site checks Network (off-site) checks District Web Page Exports filtered by QC code

9 Automatic Quality Checks
Assign Automatic Quality Control Checks to Parameters

10 Data Input Process Ingests data files generated by datalogger or data formatting software Duplicate input data is automatically rejected Automated Quality Checks establish initial QC code Min/max, zero drift, sticking, rate-of-change, compare QC conditions can activate process/alarm Electronic chain-of-custody created Sub-hourly data aggregated to 1-hr averages Automated data export to AIRNow and Air District web site

11 DMS Status Station Reporting Status Event Log QC Log

12 Manual Data Review Time-series graphical editing and QC tools for staff data review DMS records all reviews and manual adjustments to QC status and data values (electronic chain-of-custody) Tracks manual data reviewer status Lock final data prior to export Exports final data for regulatory submission to AQS or other agencies

13 Time Series Edit/QC Screen

14 Scatter Plot Analysis

15 Other DMS Features Data access security (user rights management)
Maintains instrument equipment database Supports electronic instrument and site logs Daily instrument performance reports (using OpCodes)

16 DMS Software Requirements
DMS host computer: Windows Server 2000/2003 or XP/Vista Microsoft SQL Server 2005 (all editions) DMS Client Software: .NET 2.0 Framework Windows 2000, XP, Vista Future tools may require Java and ERSI arcGIS

17 DMS Hardware DMS Server:
Minimum server requirements – Pentium 4 laptop Must support Microsoft Windows Hardware determined by processing needs Laptop processes hundreds of thousands of records per hour and store millions Server can process millions of records per hour and store billions DMS Client: Pentium III class PC or better Broadband connection to DMS Server

18 DMS Performance Benchmarks
AIRNow DMC DMS will be running in August on a Quad Core Intel processor with 8 GB of RAM. The operating system will be Windows Server bit Edition • Currently, AIRNow DMC processes 12 million records a day for over 5000 sites • The DMS system can process 22 million records per hour or ½ billion a day (historical data import) • The Bay Area DMS system will process 1 million data records per day

19 DMS Storage Benchmarks
The database will grow by 100 MB for every one million records One billion records can be stored in 100 GB data DMS query performance has been tested with ½ billion data records AIRNow DMC will test performance for over a billion records by fall

20 DMS Can Be … An instrument monitoring system A data analysis system
A data Quality Check and Review system A data export tool (to AirNow, AQS) A data warehouse for historical data

21 Agency Deployment DMS developed using AIRNow technology in 2004
DMS to replace AIRNow technology by fall 2008 DMS in use by BAAQMD, SCAQMD, and CARB by end of 2008 AIRNow International will be based on DMS for 2009 Stable DMS distribution package available for agency use by early 2009 Looking for 3 or 4 additional agency development partners in 2008

22 Development and Funding
DMS was development and funded by agencies with an interest in the result Contributors include: Bay Area AQMD (BAAQMD) EPA Region IX, 103 Grant EPA National Environmental Information Exchange Network (NEIEN) Challenge Grant South Coast AQMD (SCAQMD) EPA (AirNow and AirNow International) California Air Resources Board (CARB) soon New DMS features must be available to all agencies New features must not reduce DMS functionality to other agencies

23 Future DMS Development
Enhanced view/edit features Viewing tools - fingerprint plots Statistical tools - box plots, reports Support for toxics, PM filter data, Special Purpose Monitoring Expanded reporting capabilities Instrument Control Charts GIS mapping capability, web services, and NEIEN XML data exchange node

24 DMS Summary Simple, scalable, cost-effective
Fast, secure, and efficient operation Comprehensive quality control tools Applicable to a wide variety of data Free to public agencies under a share-ware use agreement

25 Bay Area Air Quality Management District
Contact Information Mark Stoelting Bay Area Air Quality Management District (415) Eric Gray Sonoma Technology, Inc. (707)

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