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About The Visibility Information Exchange Web Sy The Visibility Information Exchange Web System (VIEWS) is an online system of data and tools designed to support the EPA's Regional Haze Rule by providing states, tribes, scientists, researchers, planners, students, and others with easy online access to a wide variety of air quality datasets. The VIEWS team maintains a comprehensive database of air quality data from over two dozen monitoring networks and is constantly acquiring new data sets and adding new networks. The VIEWS website offers many tools and resources, including the Database Query Wizard, an air quality trends tool, an aerosol species composition tool, a monitoring site metadata browser, a dynamic contour-mapping tool, general-purpose charting and graphing tools, visibility photographs, Class I Area webcams, and more. The VIEWS website currently has over 1100 registered users from over 100 different countries and hosts thousands of visitors each month. The VIEWS team also develops and maintains the IMPROVE website, the WRAP Technical Support System (TSS), and the Air Toxics Data Archive (ATDA), all of which utilize the foundational database and software architecture developed for VIEWS. Ongoing development and maintenance of VIEWS is conducted by Colorado State University's Cooperative Institute for Research in the Atmosphere (CIRA) in Fort Collins, Colorado. Visitors to VIEWS are encouraged to register and provide comments, questions, and feedback to the VIEWS team regarding all aspects of the website and database. g all aspects of the website and database.
ContactName Shawn McClure  +
DataSystemAgencies RPOs, NPS, WRAP, CIRA  +
DataSystemAppCharact Not Given
DataSystemArchInterop Raw data and metadata can be obtained from Raw data and metadata can be obtained from VIEWS in a variety of output mediums: Delimited or fixed width ASCII text files, Microsoft Excel workbooks, static HTML tables, and/or interactive HTML "data grids". In addition, the user can select the specific fields that are included in the output results and can specify a variety of output options, such as "wide" or "skinny" format, date format, missing data placholder, quoted text, etc. The VIEWS team is also working to provide the option to output data in XML and as XML SOAP responses. put data in XML and as XML SOAP responses.
DataSystemArchOther Not Given
DataSystemArchSecurity All data, tools, and other resources on VI All data, tools, and other resources on VIEWS are freely accessible. No account is required to use VIEWS, but users are encouraged to register. Direct, read-only access to the integrated VIEWS database is also available via direct MS SQL Server connection, OLEDB, or ODBC. MS SQL Server connection, OLEDB, or ODBC.
DataSystemHistory In 2002, a steering committee composed of In 2002, a steering committee composed of representatives from the EPA and the five Regional Planning Organizations (RPOs) – Western Regional Air Partnership (WRAP), Central Regional Air Planning Association (CENRAP), Midwest Regional Planning Organization (MRPO), Mid-Atlantic/Northeast Visibility Union (MANE-VU) and Visibility Improvement State and Tribal Association of the Southeast (VISTA) – decided to extend the contract between CIRA and the Western Governors Association (WGA) in order to develop and expand the existing WRAP online ambient monitoring database into a national system called the Visibility Information Exchange Web System (VIEWS). As a result, the VIEWS development team designed and implemented an improved database management system and a new website to serve as the foundational elements of VIEWS, based upon requirements and feedback from the VIEWS steering committee. Over the next few years the user base for VIEWS grew significantly, as did user requests for additional datasets and new functionality. Based largely upon its popularity and success within the general air quality community, VIEWS was selected by the WRAP in 2005 to serve as the foundational architecture and starting point for the development of the WRAP’s Technical Support System (TSS), a high-level planning and decision and support system intended to aid the development of state and tribal Implementation Plans in the WRAP as required by the Regional Haze Regulations. The TSS was built upon the database and software infrastructure of VIEWS, and the first version was launched in early 2007. The TSS is designed to be a portal to the technical data and analytical results prepared by WRAP Forums and Workgroups in support of the air quality planning needs of western state and tribes. These resources are maintained and updated to support the implementation of regional haze plans and other air quality analysis and management activities. uality analysis and management activities.
DataSystemName VIEWS +
DataSystemURL  +
DataSystemValueAccess The VIEWS website provides easy online acc The VIEWS website provides easy online access to the integrated database through a wide variety of tools and applications. Users are encouraged to register with the website, but no account or login is required to use any of the VIEWS resources. The entire contents of the integrated database are freely and openly available for ad hoc querying, display, and download. In addition, users are encouraged to submit custom requests for data and to provide additional relevant datasets for inclusion in the database. nt datasets for inclusion in the database.
DataSystemValueConsolidation VIEWS employs an advanced data acquisition VIEWS employs an advanced data acquisition and import system to integrate data from several air quality data centers into a single, highly-optimized data warehouse. Ground-based measurements from dozens of monitoring networks, air quality modeling results, and detailed emissions inventories are imported and updated on a regular basis using a generalized, uniform data model and carefully standardized metadata. Names, codes, units, and quality flags from the source datasets are carefully mapped to a unified standard, and native formats and organizations are transformed into a common, normalized database schema. This design enables users to explore, merge, and analyze datasets of widely-varying origin in a consistent, unified manner with a common set of tools and web services. This degree of interoperability allows decision-makers to analyze diverse datasets side-by-side and focus on high-level planning strategies without having to contend with the details of data management and manipulation. tails of data management and manipulation.
DataSystemValueDecisionSupport VIEWS/TSS users are typically asking quest VIEWS/TSS users are typically asking questions of “What pollutants are impacting a given area?” and “Where are these pollutants coming from?” The answers depend upon accurate assessments of aerosol loading and source attribution, and FLMs and states are occupied on an ongoing basis with these goals. States are further mandated to answer the question of “What can be done to reduce these impacts?”, because the Regional Haze Rule requires states and tribes to develop implementation plans for reducing emissions and demonstrating reasonable progress towards doing so, and these plans must provide for an improvement during the 20% worst visibility days while also ensuring no degradation during the 20% best visibility days. To accomplish this, users must identify the pollutants, quantify their amounts, and determine the sources of anthropogenic emissions that contribute to this pollution on both the “best” and the “worst” visibility days in a given area. They must then determine available control measures for each source and evaluate these measures on the basis of costs, time, energy and environmental impacts, and the remaining life of the source. Planners then employ these analyses to make decisions about what controls to implement, to estimate projected improvements, and to track their progress in reaching these goals. The resulting decisions have obvious ecological impacts, but can also have important political and economic impacts in the sense that deciding which sources to control is a politically-significant issue and the process of controlling emissions and tracking progress costs money and takes time. VIEWS and the TSS have been designed with these decision needs in mind from the outset, and input and feedback from primary decision-makers is solicited on a routine basis through workshops and training sessions. Such input is carefully factored back into the design process to improve existing tools and design new ones in an ongoing process of progressive evolution. ongoing process of progressive evolution.
DataSystemValueOther <div style="margin:0px 20px 10px 0px;te <div style="margin:0px 20px 10px 0px;text-align:justify;">In addition to importing and consolidating data from many different monitoring networks, VIEWS and the TSS specifically summarize results and consolidate information about air quality monitoring, meteorological and receptor modeling data analyses, emissions inventories and models, and gridded air quality/visibility regional modeling simulations. These copious and diverse data are integrated for application to air quality planning purposes by prioritizing and refining key information and results into explanatory documents and tools. Finally, a major goal is to make the standard and user-specified maps, charts, tables, and graphs easily available for export, while maintaining the original source data available for verification and subsequent analysis through the online tools.</div> ysis through the online tools.</div>
DataSystemValueProcess The VIEWS data import system accepts data The VIEWS data import system accepts data in a variety of formats from various providers and can also automatically download and extract data from known online sources. The import system extracts the data and metadata from its source, examines it for basic integrity issues like duplicate records and mismatched data types, performs various data conversions, transforms the data into an integrated schema (described above), calculates checksums for numeric fields, and validates the resultant data against its source before transferring it to the production data warehouse. Many other processing operations – such as filtering, aggregation, averaging, formatting, renaming, recoding, and outputting – can be done on-the-fly by using the various data access and analysis tools on the website. access and analysis tools on the website.
DataSystemValueVis A wide variety of general-purpose visualiz A wide variety of general-purpose visualization and analysis tools are available on the VIEWS website for exploring the data and producing graphs, charts, maps, and formatted data files. Specialized tools allow users to browse and analyze time series, visibility trends, spatial patterns, temporal aerosol profiles, chemical species composition, light extinction budgets, back trajectories, estimated natural conditions, visibility projections, glide slope plots, emissions inventories, weighted emissions potentials, and model performance evaluations. All tools have been designed with common user interface components and are being re-factored with a Service Oriented Architecture approach to allow them to function as web services. to allow them to function as web services.
EndtoEndIntegration The acquisition, import, verification, tra The acquisition, import, verification, transformation, integration, presentation, analysis, and dissemination of data are all handled by the various subsystems of VIEWS. In addition, the regular solicitation and incorporation of user feedback ensures that this end-to-end integration is further supplemented by the input of the decision makers who comprise the VIEWS user base. n makers who comprise the VIEWS user base.
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Categories DataSystem  + , WCS Candidate  +
Modification dateThis property is a special property in this wiki. 29 June 2010 22:05:17  +
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