The use of GIS and remote sensing for environment statistics Jacques-André NDIONE1, Mamadou FAYE2 1- Centre de Suivi Ecologique (CSE), BP 15532, Fann Residence, Dakar, SENEGAL
[email protected] 2- Agence Nationale de la Statistique et de la Démographie (ANSD), (ANSD), Dakar, Sénégal,
[email protected],
[email protected] Outline • Introduction • Concepts – Environment statistics – Remote sensing – GIS • Examples of using RS and GIS • Conclusion Climate change should be added… Ongoing dialogue between data demand and data supply… Environment statistics “Environment statistics are statistics that describe the state and trends of the environment, covering the media of the natural environment (air/climate, water, land/soil), the biota within the media, and human settlements.” UNSD. 1997. Glossary of Environment Statistics, Studies in Methods, Series F, No. 67 Environment statistics (2) Scope of Environment Stats Perception of major users and producers (UNECA) Socioeconomic and Specific to Ezigbalike environmental particular policies conditions Dozie : Courtesy Environment statistics (3) FDES The challenge of producing environment statistics (UNECA) Ezigbalike Dozie : Courtesy Remote sensing: definition • Remote sensing is the collection of information about an object without being in direct physical contact with the object. • Remote Sensing is a technology for sampling electromagnetic radiation to acquire and interpret non-immediate geospatial data from which to extract information about features, objects, and classes on the Earth's land surface, oceans, and atmosphere. (UNECA) - Dr. Nicholas Short Ezigbalike Dozie : 9 Courtesy Elements involved in Remote sensing 1. Energy Source or Illumination (A) 2. Radiation and the Atmosphere (B) 3. Interaction with the Object (C) 4. Recording of Energy by the Sensor (D) 5.