Sentences with phrase «caused global average surface temperature»

Today scientists have very high confidence about human - caused global average surface temperature increase — a key climate indicator.

Not exact matches

Most scientists and climatologists agree that weird weather is at least in part the result of global warming — a steady increase in the average temperature of the surface of the Earth thought to be caused by increased concentrations of greenhouse gasses produced by human activity.

It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.

AR5: It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.

Item 8 could be confusing in having so many messages: «It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas... The best estimate of the human - induced contribution to warming is similar to the observed warming over this period....

Global average surface temperatures are not expected to change significantly although temperatures at higher latitudes may be expected to decrease to a modest extent because of a reduction in the efficiency of meridional heat transport (offsetting the additional warming anticipated for this environment caused by the build - up of greenhouse gases).

The increase in these winds has caused eastern tropical Pacific cooling, amplified the Californian drought, accelerated sea level rise three times faster than the global average in the Western Pacific and has slowed the rise of global average surface temperatures since 2001.

It is extremely likely * that human activities have caused more than half of the observed increase in global average surface temperature since the 1950s.

Redistribution of heat (such as vertical transport between the surface and the deeper ocean) could cause some surface and atmospheric temperature change that causes some global average warming or cooling.

In the entirely subjective opinion of a particular group of IPCC authors, it's «extremely likely» (95 % certain) that «more than half of the observed increase in global average surface temperature from 1951 to 2010» was caused by human - generated greenhouse gas emissions (see the bottom of p. 13 here).

In 2013, the Intergovernmental Panel on Climate Change Fifth Assessment Report stated a clear expert consensus that: «It is extremely likely [defined as 95 - 100 % certainty] that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic [human - caused] increase in greenhouse gas concentrations and other anthropogenic forcings together.»

What I mean is simply that we have as much actual empirical evidence for the existence of even one unicorn in this world as we have for the basic AGW claim that more CO2 in the atmosphere can, will and does cause a net rise in Earth's average global surface temperature, i.e. NONE whatsoever!

It seemsthe observed increase in trade winds lead to the surfacing of cooler waters in the Eastern Pacific ocean and this phenomenon is found by models to cause global average temperatures to cool.

This backs up the IPCC attribution statement «It is extremely likely [95 percent confidence] more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

Again IPCC attribution statement: «It is extremely likely [95 percent confidence] more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

Changes in instrumentation and data availability have caused time - varying biases in estimates of global - and regional - average sea - surface temperature.

Carbon dioxide is one of the greenhouse gases that enhances radiative forcing and contributes to global warming, causing the average surface temperature of the Earth to rise in response, which the vast majority of climate scientists agree will cause major ** adverse effects **.

«It is extremely likely -LCB- 95 % + certainty -RCB- that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

According to the BBC, «The panel states that it is 95 percent certain that the «human influence on climate caused more than half the observed increase in global average surface temperatures from 1951 - 2010.»»

We're way beyond counting only the interpolated surface global weather station temperature average as our only index of the Forcing human fossil fuel burning causes.

«Climate science» as it is used by warmists implies adherence to a set of beliefs: (1) Increasing greenhouse gas concentrations will warm the Earth's surface and atmosphere; (2) Human production of CO2 is producing significant increases in CO2 concentration; (3) The rate of rise of temperature in the 20th and 21st centuries is unprecedented compared to the rates of change of temperature in the previous two millennia and this can only be due to rising greenhouse gas concentrations; (4) The climate of the 19th century was ideal and may be taken as a standard to compare against any current climate; (5) global climate models, while still not perfect, are good enough to indicate that continued use of fossil fuels at projected rates in the 21st century will cause the CO2 concentration to rise to a high level by 2100 (possibly 700 to 900 ppm); (6) The global average temperature under this condition will rise more than 3 °C from the late 19th century ideal; (7) The negative impact on humanity of such a rise will be enormous; (8) The only alternative to such a disaster is to immediately and sharply reduce CO2 emissions (reducing emissions in 2050 by 80 % compared to today's rate) and continue further reductions after 2050; (9) Even with such draconian CO2 reductions, the CO2 concentration is likely to reach at least 450 to 500 ppm by 2100 resulting in significant damage to humanity; (10) Such reductions in CO2 emissions are technically feasible and economically affordable while providing adequate energy to a growing world population that is increasingly industrializing.

Over the past 60 years (1951 — 2010), the study finds that global average surface temperatures have warmed 0.6 °C, while in climate models, greenhouse gases caused between 0.6 and 1.2 °C surface warming.

that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

«It is extremely likely that human influence on climate caused more than half of the observed increase in global average surface temperature from 1951 − 2010.»

It is extremely likely [95 percent confidence] all of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.

It also follows using the same semantics that: «It is more likely than not that more than the entire observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

The El Niño - Southern Oscillation, for example, moves heat between the atmosphere and the ocean, causing year - to - year variations in global average surface temperatures of about 0.2 ℃.

The phrase «It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.»

It is unlikely that human influence on climate caused more than half of the increase in global average surface temperature from 1951 - 2010.

Over at RealClimate, on this topic they claim» It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together.

I should also have made the point that using the same Figures 4.4 and 4.5 from the referenced report, that one can conclude most of the HadCRUT4 global average surface temperature warming observed from 1970 — present was due to NATURAL causes, as 0.3 C of the approx. 0.55 C warming was due to the 62 year natural cycle with amplitude of + / - 0.15 C.

ECS is the increase in the global annual mean surface temperature caused by an instantaneous doubling of the atmospheric concentration of CO2 relative to the pre-industrial level after the model relaxes to radiative equilibrium, while the TCR is the temperature increase averaged over 20 years centered on the time of doubling at a 1 % per year compounded increase.

This conclusion takes into account the approximately 62 year period natural cycle in global average surface temperatures that is obvious in the HadCRUT4 global average surface temperature data, that had a maximum in about 1945 and again in about 2007, and that seems to be the cause of the current «pause» in global average surface temperatures.

lolwot: Does the Otto et al constraint of 0.9 to 2.0 °C TCS not support the IPCC statement «It is extremely likely that human influence on climate caused more than half of the increase in global average surface temperature from 1951 - 2010.»?

It is extremely likely that human influence on climate caused more than half of the increase in global average surface temperature from 1951 - 2010.

And as Judith Curry points out about the current climate, there are many problems with the claim that «more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together» — far from speaking for itself, the statement needs unpacking and its premises interrogating.

The IPCC says (in the AR5 SPM), «It is extremely likely [defined as 95 - 100 % certainty] that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic [human - caused] increase in greenhouse gas concentrations and other anthropogenic forcings together.»

Backing that up, NASA says that 1) sea surface temperature fluctuations (El Niño - La Niña) can cause global temperature deviation of about 0.2 °C; 2) solar maximums and minimums produce variations of only 0.1 °C, warmer or cooler; 3) aerosols from natural sources such as volcanic eruptions (Mount Pinatubo for example) have caused average cooling of 0.3 °C, but recent eruptions have had not had significant effect.

Over the past three decades, changes in [CO2] have increased global average temperatures (approx. 0.2 °C decade − 1 [2]-RRB-, with much of the additional energy absorbed by the world's oceans causing a 0.8 °C rise in sea surface temperature over the past century.

Therefore, the average flux of solar power striking on the surface, after attenuation by the atmosphere, is 342 W / m ^ 2, which causes an average global temperature of ~ 20 K. No need to invent a nonexistent greenhouse effect.

In the almost sure knowledge that the earth never experienced a runaway greenhouse even with ancient CO2 levels 10 to 20 times greater than today, these anti-science scoundrels insist with a «high level of confidence» that this amplification is real and it's based on nothing more than faster than expected surface temperature rise in the past few decades which can be TOTALLY explained by multi-decadal cyclic behavior in ocean currents, trade winds, and / or solar magnetic activity causing small global average albedo changes.

EPA claims that the Global Average Surface Temperature (GAST) has been rising in a dangerous fashion over the last fifty years, in large part due to human - caused increases in atmospheric CO2 concentrations.

AGW says that the average of energy received by the surface of the Earth, after attenuated by the atmosphere, is 161 W / m ^ 2, which causes an average global temperature of — 42.3 °C.