weather: The state of the atmosphere at a given time and place, with respect to variables such as temperature, moisture, wind velocity, and barometric pressure. climate: the variability or average state of the atmosphere over many years climate change: the variation in the Earth´s global climate or in regional climates over years One of the most current issues in politics or wherever in these days is the debate about climate change. Scientists confirm that between 1906 and 2005 temperature has grown about 0,74 °C and while between 1976 till today the highest increase has been measured. On top of that the year 2005 has been the warmest year since climate researches had been started. Also oceans show higher temperatures of about 0,6 °C. To ordinary human beings this number doesn´ t seem to be threatened but you always have to remember that the mean temperatures in the last ice age have only been 6°C less .Now they´ re discussing whether this global warming has just natural causes and is an indicator to show the change between ice ages and warm periods. They also mention a lot of natural factors affecting climate change, as for example solar- and orbital variation and oceans variability. One key word which is often connected with climate change is the greenhouse effect. You can subdivide it into two kinds: a) natural greenhouse effect
Without the natural greenhouse effect, life on earth won´ t be possible, because temperature will be about – 18°C, not an average of todays 15°C.This fact can be due to two thirds to water vapour of the atmosphere and the rest to carbon dioxide, methane, nitrous oxide, atmospheric ozone and CFC. They allow short wave solar radiation to pass to earth, but they reflect long wave radiation from earth, as well as clouds.
b) man-made greenhouse effect
Beginning with the industrial revolution in the 1850s and accelerating ever since, the human consumption of fossil fuels has...