Sentences with phrase «increasing aridity»
The phrase "increasing aridity" means that the amount of moisture in a region, such as rainfall or humidity, is decreasing over time. This leads to drier conditions and less water available for plants, animals, and people. Full definition
Outputs from four different general circulation model simulations for 2 × CO2 are included in the analyses; model predictions for increasing aridity in the Yellowstone Park area are generally in agreement with observed trends in the historical climate records.
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This timeframe is particularly relevant for the evolution of past climate as it is a period of intense cooling coupled with increased aridity at a global scale.
Hence over the Plio - Pleistocene, East African climate is best characterised as a long - term trend towards increasing aridity punctuated by periods of precession - forced high rainfall leading to the periodic appearance of deep freshwater lakes.
Proxy data documenting drought indicate centuries - long periods of increased aridity across the central and western U.S. (Fig 2F)(25, 22).
Historical records of precipitation, streamflow, and drought indices all show increased aridity since 1950 over many land areas 1,2.
The developed world will be affected, but the developing world will be hurt even more, by increasing aridity, greater temperatures and faster population growth.
«Something subtler in the lead - up, such as increasing aridity and changes in vegetation, may be doing the damage.»
This shift has been ascribed to increased aridity due to the orographic barrier produced by the progressive rifting of East Africa during this period [22].
«Climate models project increased aridity in the 21st century over most of Africa, southern Europe and the Middle East, most of the Americas, Australia, and Southeast Asia.
Bowen says previous research has shown that during the Paleocene - Eocene warm period, there was «enhanced storminess in some areas, increased aridity in other places.
«One of the main outcomes of this study is that older faunas, linked to environments that were disappearing due to increased aridity at the time, were displaced to the north surviving temporally in local refugia with more humid conditions, particularly in the region of Catalonia and the South of France» adds Manuel Hernández Fernández, professor at Universidad Complutense de Madrid and senior author of the study.
The savannah hypothesis implicates the long - term trend towards increased aridity and the expansion of the savannah as a major driver of hominin evolution [7]--[8].
There is clear evidence that the supply of mineral dust to the tropical western Atlantic region has been controlled by environmental conditions in the Saharan region during the 20th century (21) with increases in dust supply linked to increased aridity since 1970.
We do expect more wildfire activity as the West enters a period of increased aridity (cf. Seager et al. 2007, Science) that can not be helped by hotter, longer, drier summers and larger populations.
The «greening» of desert areas would have attracted game and human populations, while conversely, increased aridity would have led to population contractions, and possibly population extinctions.
Change in the overturning circulation likely contributes to expansion of subtropical conditions and increased aridity in the southern United States [30], [100], the Mediterranean region, South America, southern Africa, Madagascar, and southern Australia.
Increased aridity and temperature contribute to increased forest fires that burn hotter and are more destructive [38].
«Plants need all of these elements, in the correct amounts, and at the right times, but increasing aridity will upset this balance, leading to a breakdown in essential soil processes,» said David Etheridge, of the University of New South Wales, one of the authors.
Global warming, increasing aridity and rapidly expanding human population will lead to drylands covering half of the Earth's land surface by the end of this century.
Increased aridity and temperature contribute to increased forest fires that burn hotter and are more destructive [38].
Change in the overturning circulation likely contributes to expansion of subtropical conditions and increased aridity in the southern United States [30], [100], the Mediterranean region, South America, southern Africa, Madagascar, and southern Australia.
A key feature of anticipated 21st century droughts in Southwest North America is the concurrence of elevated temperatures and increased aridity.
So, too, has global warming as a consequence of the combustion of fossil fuels, which has begun to extend the growing season, create ever greater levels of fuels and increase aridity in already dry lands.
Increased dust flux may increase aridity and suppress rainfall outside deserts, with opposite effects under wetting scenarios (Bachelet et al., 2001; Hardy, 2003; Prospero and Lamb, 2003; Lioubimtseva and Adams, 2004), leading to indirect effects on the vulnerability of remote regions to climate change.
Forest responses to increasing aridity and warmth in the southwestern United States.