Sentences with phrase «past changes in rainfall»

Not exact matches

She uses this knowledge of plants, and specifically their leaf waxes, to document past changes in plant life and rainfall patterns, including studies on the expansion of grasslands in Africa and the revegetation of Antarctica during a prior warming event.

«The study demonstrates a robust century - scale link between ocean circulation changes in the Atlantic basin and rainfall in the adjacent continents during the past 4,000 years,» said UTIG Director Terry Quinn, a co-author on the study.

In particular, the modelers could now reproduce in detail the pattern of warming, changes in rainfall, etc. actually observed in different regions of the world over the past centurIn particular, the modelers could now reproduce in detail the pattern of warming, changes in rainfall, etc. actually observed in different regions of the world over the past centurin detail the pattern of warming, changes in rainfall, etc. actually observed in different regions of the world over the past centurin rainfall, etc. actually observed in different regions of the world over the past centurin different regions of the world over the past century.

Changes in fall - winter rainfall from observations (top panel) as compared to model simulation of the past century (middle panel), and a model projection of the middle of the 21st century.

«Snails could potentially be a really useful tool to fill in the puzzle pieces of how rainfall changed in the past and how it changed spatially.»

«Such insights into the past may help to separate natural from «man - made» oscillations of rainfall which is particularly important in view of ongoing climate change,» says the lead author of the study, Dr. Eva Niedermeyer, LOEWE Biodiversity and Climate Research Centre (BiK - F).

It is possible to reconstruct past precipitation changes by measuring the stable hydrogen isotopic composition in terrestrial plant waxes because rainfall is the primary source of hydrogen stored in plant material.

The amount of rainfall during the past 24,000 years seems to be linked to the level of exposure of the Sunda Shelf and in particular to the specific topography of the western edge of the region, rather than to changes in deglacial climate boundary conditions alone.

The next three climate ads misstate the science of climate change, incorrectly asserting rainfall and droughts are getting worse, that there has been no pause in rising temperatures, and suggesting carbon dioxide has historically caused climate change when the fact is warming has preceded rising carbon - dioxide levels in the past.

«Researchers working at the Australian National University Research School of Earth Sciences have discovered century - scale patterns in Pacific rainfall and temperature, and linked them with global climate changes in the past 2000 years.

There have been many primarily anthropogenic changes in the past, but the major jet stream changes caused by the retreat of the North American Ice Shield seems to be much more determinative for Holocene changes in Saharan rainfall.

DES MOINES (AP)-- Warmer and wetter weather in large swaths of the country have helped farmers grow corn, soybeans and other crops in some regions that only a few decades ago were too dry or cold, experts who are studying the change said... The change is due in part to a 7 % increase in average U.S. rainfall in the past 50 years, said Jay Lawrimore, chief of climatic analysis for the Asheville, N.C. - based National Climactic Data Center... Brad Rippey, a U.S. Department of Agriculture meteorologist, said warming temperatures have made a big difference for crops such as corn and soybeans... For example, data from the National Agricultural Statistics Service show that in 1980, about 210,000 soybean acres were planted in North Dakota.

Even while identifying some of the observed change in climatic behaviour, such as a 0.4 C increase in surface temperature over the past century, or about 1 mm per year sea level rise in Northern Indian Ocean, or wider variation in rainfall patterns, the document notes that no firm link between the do...

The report says there is no change to the conclusion that heavy rainfall events have increased in the past, but there is greater confidence now that these will increase in the future.

These transition zones have historically fluctuated in response to rainfall changes (Hiernaux and Turner, 2002), in the clearest example of multi-decadal variability measured during the past century (Hulme, 2001).

Ecosystem responses to past rainfall variability in the Sahel are potentially useful as an analogue of future climate change impacts, in the light of projections that extreme drought - affected terrestrial areas will increase from 1 % to about 30 % globally by the 2090s (Burke et al., 2006).

Palaeo - records indicate that both the Indian Summer Monsoon and West African Monsoon have shifted in the past, causing large changes in rainfall and vegetation.

In the past 60 years temperatures have risen, rainfall patterns have changed and soils have begun to dry out even further.

When done so, proxy records and climate models indicate that the response to past global warming was profound, with evidence for global reorganisation of the hydrological cycle and profound local increases and decreases in rainfall; combined with elevated temperatures and terrestrial vegetation change, this appears to often result in warming - enhanced soil organic matter oxidation, chemical weathering and nutrient cycling.