Charleston Harbor Deepening Awaits Approval from Congress

Charleston Harbor waiting authorization from Congress for deepening.

A Perspective on the Temperature of Earth’s Climate

A Perspective on the Temperature of Earth’s Climate

 

It has never been easier to gain perspective of the changes in Earth’s climate, be it past, present, or future. Scientists today use proxies such as tree rings, corals, ocean and lake sediments, cave deposits, ice cores, fossils, boreholes, and glaciers to calculate historical changes. According to NOAA, the one steady factor that Earth’s climatic records indicate is constant change. The compilation of these changes with present-day data can begin to paint a diagram for the rate at which temperature will progressively change.

NOAA has been conducting studies using various data to compile a graph to present a pattern of temperature variability over the last 500 to 2000 years. The graph pictured shows temperature patterns over a nearly-2000-year span.

 

Source:

http://www.ncdc.noaa.gov/paleo/globalwarming/paleolast.html

 

 

 

 

 

 

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