degrees above the 1990 value, and expected to rise 2-5 degrees above this value by 2100.
To measure global average temperatures groups of meteorologists, such as the World Meteorological Organization (WMO) and the Global Climate Observing System (GCOS), have a large number of observation points on the continents, which are then gridded into equal areas to assign a temperature for each box in the grid. Observations from satellites are widely used where local observations are not available and for calibrating the models. Local effects, such as any urban heat island effect from cities, are accounted for in these types of model. With rapid improvements in computer modeling it has been possible to make more and more detailed and accurate models for the Earth.
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Disasters: Why No ones Really 100 Safe. This is common knowledgethat disaster is everywhere. Its in the streets, its inside your campuses, and it can even be found inside your home. The question is not whether we are safe because no one is really THAT secure anymore but whether we can do something to lessen the odds of ever becoming a victim.