Monthly Archives: February 2008

Sea Level Rise

Posted on February 10, 2008 by Rashid Faridi

Global mean sea level has been rising at an average rate of 1 to 2 mm/year over the past 100 years, which is significantly larger than the rate averaged over the last several thousand years. Projected increase from 1990-2100 is … Continue reading →

Posted in Global Warming | 1 Comment

GIS, REMOTE SENSING, AND IMAGE PROCESSING IN STUDYING URBAN SYSTEMS

Posted on February 9, 2008 by Rashid Faridi

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 | 12 Comments

Is the atmospheric/oceanic circulation changing?

Posted on February 9, 2008 by Rashid Faridi

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 →

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Is the hydrological cycle (evaporation and precipitation) changing?

Posted on February 9, 2008 by Rashid Faridi

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 →

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