Sentences with phrase «aridity changes»

I conclude that the observed global aridity changes up to 2010 are consistent with model predictions, which suggest severe and widespread droughts in the next 30 — 90 years over many land areas resulting from either decreased precipitation and / or increased evaporation.

To overcome this problem, Karnauskas et al. adapted an engineering method for estimating the potential evapotranspiration to GCM output, enabling them to calculate an aridity change index (ACI) for 80 globally distributed island groups.

Not exact matches

«Something subtler in the lead - up, such as increasing aridity and changes in vegetation, may be doing the damage.»

Climate change in southern Africa affects animals through the direct effects of increasing air temperatures and aridity.

«It is not because the aardvark's body can't take the heat, but that the termites and ants that they rely on — not just for food but also for water — can't take the heat and aridity of changing climates,» says Rey.

Climate change involves an increase of aridity and evaporative rates.

According to one study that looked at eight fuel aridity metrics in the Western U.S. and modeled climate change's effects on them, human - caused climate change accounted for about 55 percent of the observed increases in fuel aridity between 1979 and 2015 (Figure 6), and added an estimated 4.2 million hectares of forest fire area between 1984 and 2015.7 Based on all eight metrics, the Western U.S. experienced an average of 9 additional days per year of high fire potential due to climate change between 2000 and 2015, a 50 percent increase from the baseline of 17 days per year when looking back to 1979.

That said, the overall trend is clear: with fuel aridity increasing in the western U.S. due in part to human - caused climate change, the authors project that both burned area and burn severity will continue to increase under climate change.

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.

Temperature changes in the tropics appear to have been smaller, however the increased aridity did lead to a modest reduction in the tropical rainforest extent, but a rapid turnover in species composition.

What they found is that although about half of the island groups are projected to experience increased rainfall — predominantly in the deep tropics — overall changes to island freshwater balance will shift towards greater aridity for over 73 % of the island groups (16 million people) by mid-century.

Changes in aridity — the ratio between evaporation and precipitation — are expected in many regions as a result of climate change.

Moreover, the faster - than - predicted change in global climate (Intergovernmental Panel on Climate Change, 2007) and the different available scenarios for climate change suggest an increase in aridity for the semi-arid regions of the globe and the Mediterranean region in the near fchange in global climate (Intergovernmental Panel on Climate Change, 2007) and the different available scenarios for climate change suggest an increase in aridity for the semi-arid regions of the globe and the Mediterranean region in the near fChange, 2007) and the different available scenarios for climate change suggest an increase in aridity for the semi-arid regions of the globe and the Mediterranean region in the near fchange suggest an increase in aridity for the semi-arid regions of the globe and the Mediterranean region in the near future.

With data on various isotopes and aridity and CO2 concentrations now complete, the mirroring of the climate change in the horse size is quite exact.

We used PDSI values from the North American Drought Atlas (NADA, version 2a) to detect changes in aridity variability and periodicity for the Southwest over the past millennium.

This critical land - use change will enhance aridity and desertification in many of the already water - stressed regions in South America, affecting not only the landscape but also modifying the water cycle and the climate of the region.

Rainfall change and variability is very likely to affect vegetation in tropical grassland and savanna systems with, for example, a reduction in cover and productivity simulated along an aridity gradient in southern African savanna in response to the observed drying trend of about 8 mm / yr since 1970 (Woodward and Lomas, 2004a).

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.

This knowledge could help predict climate changes by modeling potential changes in dust associated with increasing future aridity.

They found that climate change is responsible for 55 percent of the observed increasing fuel aridity.

Dai examined observational data and climate model output to see how sea surface temperatures and aridity (decreased streamflow and precipitation) changed over time and to find any similarities in the features of these changes.

He then used model projections for the 21st Century to calculate potential changes in global aridity.