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Daily Archives: February 9, 2008
GIS, REMOTE SENSING, AND IMAGE PROCESSING IN STUDYING URBAN SYSTEMS
The Geographic Information System (GIS) is a computer-assisted system for acquisition, storage, analysis and display of geographic data. GIS allows for creating, maintaining and querying electronic databases of information normally displayed on maps. These databases are spatially oriented, the fundamental … Continue reading
Posted in GIS
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Is the atmospheric/oceanic circulation changing?
A rather abrupt change in the El Niño – Southern Oscillation behavior occurred around 1976/77 and the new regime has persisted. There have been relatively more frequent and presistent El Niño episodes rather than the cool La Niñas. This behavior … Continue reading
Posted in Global Warming
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Is the hydrological cycle (evaporation and precipitation) changing?
Overall, land precipitation for the globe has increased by ~2% since 1900, however, precipitation changes have been spatially variable over the last century. Instrumental records show that there has been a general increase in precipitation of about 0.5-1.0%/decade over land … Continue reading
Posted in Global Warming
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Rashid's Blog: An Educational Portal cm 