Sentences with phrase «human activities since»

Radiative forcing as a result of increases in atmospheric CO2 concentrations caused by human activities since the preindustrial era predominates over all other radiative forcing agents (IPCC, 2007a, SPM).

There is very high confidence that the net effect of human activities since 1750 has been one of warming.

Human activities since the beginning of the Industrial Revolution (around 1750) have produced a 40 % increase in the atmospheric concentration of carbon dioxide (CO2), from 280 ppm in 1750 to 406 ppm in early 2017.

In their statement, the scientific academies say the oceans have absorbed about a quarter of the carbon dioxide emitted to the atmosphere by human activities since the industrial revolution, resulting in rapid and irreversible changes in ocean chemistry.

Besides anthropogenic warming, there have been a multitude of changes in land cover throughout the Southwest due to human activities since the late 19th century.

«Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years.»

Aerosols, or microscopic particles like soot or black carbon in the air, occur naturally but have also been increasing due to human activities since the industrial revolution.

Both modernists and traditionalists agree that human activities since the Industrial Revolution have given the planet a global facelift.

You're right, & IMO, the net effect of human activity since c. AD 1950 has been to cool rather than warm the planet, although not much in either direction.

The inescapable conclusion was that worldwide human activity since the industrial age had raised CO2 levels, trapping greenhouse gases in the atmosphere and warming the planet.

Finally, it's understood that prior climate changes were not driven by human activity since there was no human activity to drive them.

The current warming trend is of particular significance because most of it is extremely likely (greater than 95 percent probability) to be the result of human activity since the mid-20th century and proceeding at a rate that is unprecedented over decades to millennia.1 Earth - orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale.

Not exact matches

But the wildfires that scorched vast swaths of the US this year can scarcely be described as natural disasters, since human activities exacerbated them at every step.

I am trying to find out more of what we can do too, but since there is so much criminal activity involved in human trafficking, most of what can be done is reserved for law enforcement.

Our accepted exegesis of this bold denial is that it means only a repudiation of divine activity in human affairs, since, so it is said, the Hebrews never doubted the existence of God.

But the same ontological totality is not necessarily a manifestation of Spirit since Spirit presupposes at least some minimal form of self - consciousness within the individual entity and thus is confined to the human and interhuman spheres of existence and activity.

Most of his book is a history of the unavailing efforts of philosophers, since the time of Descartes, to find certainty, to discover a set of sensations («raw feels» or clear and distinct ideas) or terms (analytical truths, the symbols of mathematical logic) that would provide a secure foundation for all human inquiries and activities.

Thus the variety and complexity of human cognitive activity is scarcely surprising, since this sort of activity requires balancing a multitude of factors that stem partly from private (subjective) feelings and Intuitions and partly from public institutions that are the final arbiters of legitimate modes of symbolizing.

But I somewhat fear the worst, especially since human trafficking is one of the fastest growing criminal activities in the world today.

Since human individuals are essentially and naturally relational, the recommendation is clearly to expand and intensify relations, as above shown, and not, against Aristotle, to transcend the need for relation by means of some supposed individual and self - sufficient activity.

The same mechanisms that would slow it are vital in reversing it, since there are natural mechanisms for removing CO2 that are being inhibited or overwhelmed by human activity.

Since the 1970s in particular, scientific and professional societies have engaged in a number of different human rights activities:

Since the launch of the AAAS Science and Human Rights Coalition in January 2009, its core activities have focused on engaging scientists and engineers in an international process to define this right and create opportunities to integrate the right into the activities of scientists, engineers and their professional organizations.

Since our activities have such a huge impact on the biosphere, this hints at a previously unknown way in which humans can affect the climate, he says.

It's another reason, he says, that humans should be careful, since our own activities can have long - lasting, unforeseen consequences for nature.

For his part, Collins, who has led NIH since 2009 and been kept on by the Trump administration, pointed to an array of promising NIH activities, including the development of new technologies to provide insights into human brain circuitry and function through the Brain Research through Advancing Innovative Neuroethologies (BRAIN initiative) and the use of the gene - editing tool CRISPR - Cas9 to correct mutations and clear the way to develop and test a «curative therapy» for the first molecular disease: sickle cell disease.

The BBC team used clever analogies and appealing graphics to discuss three key numbers that help clarify important questions about climate change: 0.85 degrees Celsius — how much the Earth has warmed since the 1880s; 95 % — how sure scientists are that human activity is the major cause of Earth's recent warming; and one trillion tons — the best estimate of the amount of carbon that can be burned before risking dangerous climate change.

Since the last Ice Age, 11.500 years ago, it is estimated that 255 mammals and 523 bird species has gone extinct, often due to human activity.

Since 2013, exploration and survey of around 70 cave systems — part of an interdisciplinary study of past human activity on Mona Island — has revealed that Mona's caves include the greatest diversity of preserved indigenous iconography in the Caribbean, with thousands of motifs recorded in darkzone chambers far from cave entrances.

The U.N.'s panel of climate experts says that it is at least 95 percent probable that human activities are the main driver of warming since 1950.

In the 150 years since the publication of On the Origin of Species, it seems no sphere of human thought or activity has been left untouched by Darwinian analysis.

Since the 1980s, many biologists have concluded that Earth is in the midst of a massive biodiversity extinction crisis caused by human activities.

Since 2009, scientists» warnings have become more strident and new factors have emerged, sometimes dampening the impact of their message that human activity is driving warming.

Since the mid-1990s environmentalists, politicians, researchers and others have often used a concept called the ecological footprint to quantify the relative health of the planet under the influence of human activity and industry.

According to the lecturer Emilia Gutiérrez, from the Department of Evolutionary Biology, Ecology and Environmental Sciences of the UB, «the data from these trees that grow in heights over 2,000 metres represents the global changes, since their growth is not influenced by the effects of the local human activity (wood cutting, industry).»

Bassem Hassan (VIB / KU Leuven): «Since we show that APP and APPL show similar activities in cultured cells, we suspect that APP in the human brain functions in the same manner as APPL in the brain of fruit flies.

Concentrations in the atmosphere have crept up since 2007, but during the same period, methane emissions from human activities and natural sources have remained stable or even fallen slightly, both studies suggest.

In letters sent on 18 June, Representative Joe Barton (R - TX), chair of the House Energy and Commerce Committee, and investigations subcommittee chair James Greenwood (R - PA) asked the Commerce, Energy, and Health and Human Services departments and the Environmental Protection Agency, among others, to describe their policies on outside activities by employees and report the amounts paid since 1999.

Since then, human activities have pumped lots of carbon dioxide into the atmosphere.

Without human interference, the Earth's orbit and tilt, a slight decline in solar output since the 1950s and volcanic activity would have led to global cooling.

One of Ruddiman's main arguments says: Human activity has to be the relevant forcing since our present models can not see purely natural causes for these changes.

Increases in concentrations of these gases since 1750 are due to human activities in the industrial era.

Since 2005 his group is working on the immunomodulatory activities of human mesenchymal stem cells isolated from different sources — bone marrow, adipose tissue, endometrium, decidua.

We know with certainty that the increase in CO2 concentrations since the industrial revolution is caused by human activities because the isotopes of carbon show that it comes from fossil fuel burning and the clearing of forests.

The concentration of atmospheric CO2 has increased dramatically since the Industrial Revolution (from around 280 parts per million [ppm] in preindustrial times to 401 ppm in 2015), primarily due to human activities such as the burning of fossil fuels and changes in land - use.

In addition, since CGF is related to the nucleic acid it also increases the activity of the most important cells of human immune system (T - and B - cells) which fight with viruses or cancer cells.

Like humans, dogs may also develop severe headaches, but since they can not articulate, symptoms like decreased frequency of barking or diminished levels of activity.

However, they enter REM sleep much sooner (about 10 minutes after first falling asleep compared to 90 minutes in humans), and they spend only 10 percent of their total sleep time in REM, since their sleep is often interrupted by activity or noise.

Even though we need to be careful to not necessarily assume that what is «right» for a human is also «right» for a cat, the need to consider carbohydrates, obesity, and activity level should come as no surprise since these factors are are also significant issues in human diabetes.

Historians suggest the site of the Citadella has been at the heart of human activity on Gozo since prehistoric times.