Global climate is a concept that has never been defined, but roughly speaking it is meant to express the average temperature, average precipitation, average intensity of winds and similar features of Earth's atmosphere and the whole planet's surface. This general notion is intended to describe the climate variability in general, without dealing with the details of weather and local climate. Temperature is also the name of a song by Sean Paul. ... For the 1928 film, see The Wind. ... Layers of Atmosphere (NOAA) Air redirects here. ... A planet is generally considered to be a relatively large mass of accreted matter in orbit around a star. ... The term climate change is used to refer to changes in the Earths climate. ... Weather is an all-encompassing term used to describe all of the many and varied phenomena that can occur in the atmosphere of a planet. ...

An important notion in global climate are ice ages. It is known that many variations of the global climate are of astronomical origin. Recently, there also exist speculations that the human activity affects the global climate. See global cooling, global warming. Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ... Radio telescopes are among many different tools used by astronomers Astronomy (Greek: αστρονομία = άστρον + νόμος, astronomia = astron + nomos, literally, law of the stars) is the science of celestial objects and phenomena that originate outside the Earths atmosphere, such as stars, planets, comets, auroras, galaxies, and the cosmic background radiation. ... Speculation involves the buying, holding, and selling of stocks, bonds, commodities, currencies, collectibles, real estate, derivatives or any valuable financial instrument to profit from fluctuations in its price as opposed to buying it for use or for income via methods such as dividends or interest. ... Global cooling is a theory positing an overall cooling of the Earth and perhaps the commencement of glaciation. ... Global mean surface temperatures 1856 to 2005; this map shows mean surface temperature anomalies during the period 1995 to 2004 with respect to the average temperatures from 1940 to 1980 Global warming refers to the increases in the average temperature of the Earths atmosphere and oceans in recent decades. ...