Surface reflectance represents the spectral characteristics of a surface and can indicate land cover type. Daily satellite imagery is processed to create surface reflectance maps, which show seasonal changes over time. Surface reflectance data has applications in vegetation mapping, land characterization, aerosol retrieval, and studying radiative balance and climate. The DataFed infrastructure integrates distributed fire-related data sources and builds analysis tools to compare these datasets to provide new insights into fire characteristics and air pollutant emissions.
![Surface Reflectance FASTNET Fire Related Data & Analysis www.DataFed.net June 2000 Surface reflectance represents the spectral characteristics of the surface and is an indicator of the land cover type (water, vegetation, soil, urban …) Daily SEAWiFS satellite imagery is processed to arrive at daily surface reflectance maps ‘ Clean’ SeaWiFS images are used by filtering for days clear of clouds and by correcting for aerosol interference Time series analysis illuminates the seasonal change (or lack thereof) in surface reflectance during. ,[object Object],[object Object],[object Object],[object Object],[object Object],Integrated disparate data sources can provide new insight into the characteristics of fires and their air pollutant emissions. The DataFed infrastructure was used to integrate distributed fire related data sources and build analysis tools for comparing these datasets. Data DataFed Catalog includes data in the domains of aerosols, emissions, fire, meteorology Aerosol Meteorology Applications DataFed is a web-based infrastructure that supports data sharing and processing for collaborative air quality management and atmospheric science research. DataFed Goals Facilitate the access and flow of atmospheric data from provider to users Support the development of user-driven data processing value chains Participate in specific application projects Software for the Developer Registration software for adding distributed datasets to the data federation Web services for executing data access, processing and rendering tasks Web service chaining facility for composing custom-designed data views DataFed Technologies and Architecture Form-based, semi-automatic, third-party wrapping of distributed data Web services (based on XML standards) for the execution of specific tasks Service Oriented Architecture (SOA) for building loosely coupled application programs Data and Tools for Air Quality Management: Center for Air Pollution Impact and Trend Analysis (CAPITA) Washington University in St. Louis AVHRR (red) and MODIS (blue) derived fire pixels during June 16-June23, 2004](https://image.slidesharecdn.com/20040912-data-and-tools-for-air-quality-management-12556/85/2004-09-12-Data-and-Tools-for-Air-Quality-Management-1-320.jpg)
