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  Contact Information

   Department of Earth & Environmental Systems
   600 Chestnut St.
  Science Building RM159
  Indiana State University
  Terre Haute, IN 47809

  Phone: (812)237-2255
  Fax: (812)237-8029


Home >>Research

       Research Areas of Specialty

Urban Remote Sensing:

  • Invention of new algorithms and techniques: urban landscape continuum model; sub-pixel analysis; fractals and scaling; data mining; and time series image analysis.

  • Areas of application: urban heat island modelling; estimation and mapping of urban impervious surfaces; urban sprawl mapping; land surface temperature analysis; urban classification and land characterization; population estimation; public health; and urban sustainability.

  • Theory: Linkage between geography and landscape ecology; and understanding of geographical issues through remote sensing data and methods.

  • GEO Global Urban Observation and Information Initiative: This international initiative involves collaborators from all major countries. Dr. Weng has led to develop a global urban supersite initiative, among others, and the GEO team, under his leadership, has conducted global megacities analyses; defined requirements for global urban monitoring; improved global coverage of urban observation; and developed innovative techniques and indicators to support sustainable cities. His recent works have provided fresh insights into human-environment interactions in the urban areas and in the urbanization process. He has pioneered global urban remote sensing researches by suggesting new research directions, and synthesizing advances across multiple sub-fields.

  • Panelist of U.S. DOE’s Cool Roofs Roadmap and Strategy Review Committee in 2010: help to define roadmap to mitigate urban heat islands in the USA and worldwide.

Urban Climatology and Ecology:

  • Urban heat island (UHI) modeling using remote sensing data and field measurements (Fractal analysis of UHI patterns; estimating UHI parameters using kernel convolution; data mining of UHIs; sub-pixel vegetation fraction-LST relationship in UHI; scaling effect of LST-vegetation abundance relationship; relationship among air pollution, land use density and UHI) 

  • Land surface temperature (LST) estimation, generation, and analysis (LST scaling; development of data fusion algorithms; time-series analysis; spatio-temporal patterns; annual and diurnal temperature cycles modeling; generation of consistent LST data sets; use of LST data for urban, environment, and public health studies)

  • Estimation and mapping of urban extents and impervious surfaces (Systematic analysis of different algorithms for estimation but focusing on sub-pixel, ANN, fuzzy set, and object based;  effects of spectral and spatial resolutions;  seasonality;  relationship of impervious surface pattern with socioeconomic and demographic data; time series night-light analysis)

  • Urban sprawl mapping and environmental impact analysis (urban growth detection and monitoring; dynamic relationship between urban growth and environmental change; urbanization effects; integration of remote sensing and GIS; land use change analysis; time series image analysis)

  • Cities at night (settlements; population; energy use; lighting sources; light emission heterogeneity)

Environmental Sustainability:
  • Population estimation (first use of impervious surface, LST, and vegetation fraction images in population estimation; land use based model; spectral based model)

  • Urban energy consumption (high-resolution building energy data; GIS based building energy modeling; climate change impacts; anthropogenic heat discharge estimation; nighttime urban energy consumption; light pollution)

  • Environmental quality, quality of life, human and environmental health (developing new indicators for urban physical environmental quality; scale effect of census-based urban environmental quality; environmental public health using remote sensing and GIS; West Nile Virus spread in urban settings; effects of landscape pattern on disease spread)

  • Human ecosystems sustainability analysis (use of fuzzy set in assessing urban ecosystem sustainability and temporal change)

  • Human-environment interactions in coastal regions (agricultural land use and sustainability in the Pearl River Delta, southern China; relationship between land use and environmental conservation; water conservancy techniques; effects of changes in physical environment and land use on the sustainability and productivity of natural and human ecosystems; Mangrove-inundation dynamics; carbon dynamics in mangrove ecosystem; Spartina alterniflora invasion)

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