Sentences with phrase «whether changes in the concentration»

Kirk used these post-Katrina shifts — driven by an outside natural disaster rather than internal forces such as rising poverty or gentrification — to see whether changes in the concentration of people just out of prison affected reincarceration rates.

Not exact matches

It also looked at whether an association between heart attacks and changes in air pollution exists in clean air cities where concentrations of air pollution vary but do not exceed EU limits.

Judge Coffin says the nature, facts and drivers of climate change will be central to the case — including whether there is a threshold at which the concentration of CO2 in the atmosphere reaches a tipping point locking in irreversible planetary damage.

Lead author Hilary Dugan, a limnologist at the University of Wisconsin - Madison and former Cary Institute of Ecosystem Studies Postdoctoral Fellow, explains, «We compiled long - term data, and compared chloride concentrations in North American lakes and reservoirs to climate and land use patterns, with the goal of revealing whether, how, and why salinization is changing across broad geographic scales.

«At plant level, probes can be positioned at continuous levels of depth to determine the salt concentration to which roots are exposed and whether this concentration changes with the depth of the soil or in different weather conditions.

To see whether these changes associated with AD are present at an early age, before clinical symptoms are apparent, investigators measured Aβ peptide concentrations in the plasma of 175 cognitively normal young adults.

Whether or not anthropogenic climate change is exacerbating extreme weather events, vulnerability to extreme weather events will continue to increase owing to increasing population and concentration of wealth in vulnerable regions.

2.10 All model simulations, whether they were forced with increased concentrations of greenhouse gases and aerosols or with increased concentrations of greenhouse gases alone, show the follow - ing features: greater surface warming of the land than of the sea in winter; a maximum surface warming in high northern latitudes in winter... All these changes are associated with identifiable physical mechanisms.

The science is, purportedly, too uncertain to take steps to stabilize emissions as there are opposing theories as to why the climate is changing, differences in opinion as to how atmospheric concentrations of GHGs will affect the climate and various viewpoints on whether changes will be good or bad; beneficial or dangerous.

But it demonstrates how changed equilibrium conditions could have had the observed recent effect on atmospheric CO2 concentration whether or not there was a change in temperature and whether or not the anthropogenic CO2 emission existed.

The promise will begin to take concrete form as soon as all 196 UN members submit their «intended nationally determined commitments» (INDCs), which will determine whether the world can stabilize greenhouse gas concentrations in the atmosphere and limit global temperature rise to 2 degrees Centigrade in order to prevent the worst impacts of climate change.

One key point is whether the simple method you've used here provides a reliable estimate of ECS, which is defined as the long - term change in global mean temperature for a doubling of the CO2 concentration, once the temperature has reached equilibrium.

One interesting science question is whether a response to changes in the GHG concentration mainly will involve a global mean temperature change dT s / dt, or if the response leads to changes in the hydrological cycle turn - around rate η z (t).

Although historical records indicate that atmospheric CO2 concentrations and sea surface temperatures have undergone significant oscillations and have exceeded present - day levels in the past [3,4], it is the unprecedented rates of change that are fuelling concerns over whether organisms will retain the capacity to mediate vital ecosystem functions and services [5,6].

We evaluated 13 rice models against multi-year experimental yield data at four sites with diverse climatic conditions in Asia and examined whether different modelling approaches on major physiological processes attribute to the uncertainties of prediction to field measured yields and to the uncertainties of sensitivity to changes in temperature and CO2 concentration -LRB-[CO2]-RRB-.