Sentences with phrase «aridification in»

«Cooling in high and mid-latitudes led to aridification in Northern Africa: Northern high - latitude cooling played a role in triggering the rapid termination of the African Humid Period 5500 years ago.»

Not exact matches

Stanford doctoral candidate Jeremy Kesner Caves examined the uplift of the Hangay in the early Neogene, which may have helped to initiate aridification of interior Asia.

«This cooling reduced precipitation over Africa, and in combination with a range of other complex climate feedback mechanisms tipped the humid system towards aridification,» explains the first author of the study, James Collins from Helmholtz Centre Potsdam — GFZ German Research Centre for Geosciences and Alfred Wegener Institute — Helmholtz Center for Polar and Marine Research (AWI) in Bremerhaven.

The wax isotopes told the researchers about rainfall in Cameroon and the central Sahel - Sahara over the past several millennia and showed a rapid aridification around 5500 years before now.

«Cultural flexibility was key for early humans to survive extreme dry periods in southern Africa: The ability to be flexible through the innovation of technology helped early humans to survive prolonged periods of pronounced aridification.»

The early human techno - tradition, known as Howiesons Poort (HP), associated with Homo sapiens who lived in southern Africa about 66,000 to 59,000 years ago indicates that during this period of pronounced aridification they developed cultural innovations that allowed them to significantly enlarge the range of environments they occupied.

Here we show that the presence of these lakes is associated with low levels of dust deposition in both West African and Mediterranean records, but is not associated with long - term global cooling and aridification of East Africa.

Changes in the two gradients also have large regional consequences, including aridification of Africa (both gradients) and strengthening of the Indian monsoon (zonal gradient).