WebThis timeline of prehistory covers the time from the first appearance of Homo sapiens in Africa 315,000 years ago to the invention of writing, over 4,000 years ago, with the earliest records going back to 3,200 BC.Prehistory covers the time from the Middle Paleolithic (Old Stone Age) to the very beginnings of ancient history.. All dates are approximate and …

WebThe Atlantic meridional overturning circulation (AMOC) is part of a global thermohaline circulation in the oceans and is the zonally integrated component of surface and deep currents in the Atlantic Ocean.It is characterized by a northward flow of warm, salty water in the upper layers of the Atlantic, and a southward flow of colder, deep waters. These …

WebThe starting point for the Northgrippian is the so-called 8.2 kiloyear event, which was an abrupt climate change lasting some four centuries in which there was a marked decrease in global temperatures, possibly caused by an influx of glacial meltwater into the North Atlantic Ocean. Creation of Great Britain and Ireland. The ...

WebThe Holocene Climate Optimum warm event consisted of increases of up to 4 °C near the North Pole (in one study, winter warming of 3 to 9 °C and summer of 2 to 6 °C in northern central Siberia). Northwestern Europe experienced warming, but there was cooling in Southern Europe. The average temperature change appears to have declined rapidly …

WebThe African humid period (AHP) (also known by other names) is a climate period in Africa during the late Pleistocene and Holocene geologic epochs, when northern Africa was wetter than today. The covering of much of the Sahara desert by grasses, trees and lakes was caused by changes in Earth's orbit around the Sun; changes in vegetation and dust in …

WebGlobal cooling was a conjecture, especially during the 1970s, of imminent cooling of the Earth culminating in a period of extensive glaciation, due to the cooling effects of aerosols or orbital forcing.Some press reports in the 1970s speculated about continued cooling; these did not accurately reflect the scientific literature of the time, which was generally more …

WebKlimawandel, auch Klimaveränderung, Klimaänderung oder Klimawechsel, ist eine weltweit auftretende Veränderung des Klimas auf der Erde oder erdähnlichen Planeten oder Monden, die eine Atmosphäre besitzen. Die mit einem Klimawandel verbundene Abkühlung oder Erwärmung kann über unterschiedlich lange Zeiträume erfolgen. Ein wichtiges …

WebThe list of periods and events in climate history includes some notable climate events known to paleoclimatology.Knowledge of precise climatic events decreases as the record goes further back in time. The timeline of glaciation covers ice ages specifically, which tend to have their own names for phases, often with different names used for different parts of …

WebThe event flooded 100,000 km 2 (39,000 sq mi) of land and significantly expanded the Black Sea shoreline to the north and west. According to these researchers, 50 km 3 (10 cu mi) of water poured through each day, two hundred times the flow of Niagara Falls. The Bosporus valley roared and surged at full spate for at least three hundred days.

WebMonte Rosa (Italian: massiccio del Monte Rosa; German: Monte Rosa-Massiv; French: massif du Mont Rose) is a mountain massif in the eastern part of the Pennine Alps.It is between Italy's (Piedmont and Aosta Valley) and Switzerland's ().Monte Rosa is the second highest mountain in the Alps and western Europe, after Mont Blanc.. The group is on the …