Sentences with phrase «observed warming of the climate system»

Not exact matches

A large number of additional observations are broadly consistent with the observed warming and reflect a flow of heat from the atmosphere into other components of the climate system.

«Moreover, the latest developments in climate science lend greater urgency to the case for action: Effects on natural systems are already being observed and recent findings concerning the potential scope and magnitude of damages from future warming are increasingly worrisome,» the report says.

A few of the main points of the third assessment report issued in 2001 include: An increasing body of observations gives a collective picture of a warming world and other changes in the climate system; emissions of greenhouse gases and aerosols due to human activities continue to alter the atmosphere in ways that are expected to affect the climate; confidence in the ability of models to project future climate has increased; and there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.

On Wednesday, Dec. 17, at the American Geophysical Union's Fall Meeting in San Francisco, Noah Diffenbaugh, an associate professor of environmental Earth system science at the Stanford School of Earth Sciences, will discuss approaches to this challenge in a talk titled «Quantifying the Influence of Observed Global Warming on the Probability of Unprecedented Extreme Climate Events.»

Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia.

This is evident from the increasing greenhouse gas concentrations in the atmosphere, positive radiative forcing, observed warming, and understanding of the climate system.

Global warming is the observed century - scale rise in the average temperature of Earth's climate system.

However, the observed energy imbalance at the top - of - atmosphere for this recent decade indicates that a net energy flux into the climate system of about 1 W m − 2 (refs 2, 3) should be producing warming somewhere in the system4, 5.

Recognizes that warming of the climate system is unequivocal and that most of the observed increase in global average temperatures since the mid twentieth century is very likely due to the increase in anthropogenic greenhouse gas concentrations, as assessed by the Intergovernmental Panel for Climate Change in its Fourth Assessment climate system is unequivocal and that most of the observed increase in global average temperatures since the mid twentieth century is very likely due to the increase in anthropogenic greenhouse gas concentrations, as assessed by the Intergovernmental Panel for Climate Change in its Fourth Assessment Climate Change in its Fourth Assessment Report;

The IPCC concluded that «the effects [of greenhouse gases], together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have been the dominant cause of the observed warming since the mid-20th century.»

These systems likely contribute to an observed regional trend of increasing extreme rainfall, and poor prediction of them likely contributes to a warm, dry bias in climate models downstream of the Sierras de Córdoba in a key agricultural region.

It is also something quite different from «AGW», i.e. the scientifically based hypothesis that the observed LW energy absorption characteristics of CO2 (and other GHGs) would lead to a significant warming in our climate system with increased concentrations of these GHGs resulting from human GHG emissions (principally CO2), which is cited as the underlying scientific basis for the «CAGW» premise of IPCC.

Final Text: The headline message to this section states that human influence on the climate system is clear as it is evident from the increasing GHG concentrations in the atmosphere, positive radiative forcing, observed warming, and understanding of the climate system.

A wide range of observed climate indicators continue to show changes that are consistent with a globally warming world, and our understanding of how the climate system works.

As professional scientists, from students to senior professors, we uphold the findings of the IPCC Fourth Assessment Report, which concludes that «Warming of the climate system is unequivocal» and that «Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations».

Given that «causes of the earlier warming are less clear ``, our understanding of Earth's climate system is rudimentary at best, and our historical record is laughably brief, it is confounding how the IPCC can be so «extremely» sure «that human influence has been the dominant cause of the observed warming since the mid-20th century», which is «not statistically significantly different» from the natural warming that occurred between 1910 — 1940.

Tropical cyclone activity and intensity increasing Record droughts, floods, heat waves, cold spells, high tides occurring Unequivocal warming of the climate system observed with very high confidence that human activities are to blame Temperature rising even more dramatically in Arctic, threatening ice loss and extinction of species Halving human CO2 emissions immediately might save the planet from catastrophe.

Global warming and climate change are terms for the observed century - scale rise in the average temperature of the Earth's climate system and its related effects.

If observed warming is attributed to CO2 and there are other, unknown, components of the climate system, the parameterisation will be incorrect.

While it is generally accepted that the observed reduction of the Northern Hemisphere spring snow cover extent (SCE) is linked to warming of the climate system caused by human induced greenhouse gas emissions, it has been difficult to robustly quantify the anthropogenic contribution to the observed change.

«When compared to the observed response of the climate system, the computer simulations all have forecast warming trends much steeper over the last several decades than measured.

«The assessment is supported additionally by a complementary analysis in which the parameters of an Earth System Model of Intermediate Complexity (EMIC) were constrained using observations of near - surface temperature and ocean heat content, as well as prior information on the magnitudes of forcings, and which concluded that GHGs have caused 0.6 °C to 1.1 °C (5 to 95 % uncertainty) warming since the mid-20th century (Huber and Knutti, 2011); an analysis by Wigley and Santer (2013), who used an energy balance model and RF and climate sensitivity estimates from AR4, and they concluded that there was about a 93 % chance that GHGs caused a warming greater than observed over the 1950 — 2005 period; and earlier detection and attribution studies assessed in the AR4 (Hegerl et al., 2007b).»

With the ever increasing divergence of surface temperatures (NASA GISS) from satellite ones (UAH / RSS), and the subsequent divergence of overheated climate models (IPCC CMIP5) to observed reality, it is worth some background on the atmospheric temperature measurement systems used to measure the temperature of the lower troposphere — the exact place where global warming theory is meant to occur and be measured:

To achieve the observed climate consequences a mere redistribution of energy in the system both vertically and horizontally is all we need and indeed that is exactly what we do see with the current warm anomalies at poles and in the tropics with cold anomalies in mid latitudes.

The quote refers to our observation system which is inadequate to observe Earth's energy flows at the accuracy needed to understand small fluctuations in climate; it does not mean there is no global warming, as is often interpreted by the likes of Danaher.

The predominant summary statements from the TAR WGI strengthened the SAR's attribution statement: «An increasing body of observations gives a collective picture of a warming world and other changes in the climate system», and «There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.»

The observed warming rate has varied from year to year, decade to decade, and place to place, as is expected from our understanding of the climate system.

The IPCC has already concluded that it is «virtually certain that human influence has warmed the global climate system» and that it is «extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010» is anthropogenic.1 Its new report outlines the future threats of further global warming: increased scarcity of food and fresh water; extreme weather events; rise in sea level; loss of biodiversity; areas becoming uninhabitable; and mass human migration, conflict and violence.