Climatic Data Historical Records

HISTORICAL records OF climate data include the instrumental record and proxy climate data from human recorded history. Proxy records are a substitute for direct measurements by meteorological instruments. The principal sources of historical proxy records are written, archaeological, and Sonographic evidence.

Accurate reconstruction of past climate relies on information from instruments that measure air pressure, wind speed, wind direction, precipitation, air temperature, and humidity made at weather or climate stations around the globe. But looking further back in time, the record declines, both in terms of the area of the world covered and the number of variables measured. By the late 1700s, it includes only a handful of places, mainly in Europe.

The time period covered is not the only consideration. The data must also be quality controlled. This requires the availability of so-called metadata concerning the type of instruments used, measurement practices and observation routines, information on the position and exposure of instruments, and facts on the setting in which the instruments are located (for example, urban or rural).

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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