All of these quotes are from the Summary for Policymakers
More than half of the observed increase in global mean surface temperature (GMST) from 1951 to
2010 is very likely due to the observed anthropogenic increase in greenhouse gas concentrations.
It is
extremely likely that human activities caused more than half of the observed increase in global
mean surface temperature from 19512010.
Greenhouse gases contributed a global mean surface warming
likely to be between 0.5°C and 1.3°C
over the period 19512010, with the contributions from other anthropogenic forcings
likely to be
between 0.6°C and 0.1°C, from natural forcings likely to be between 0.1°C and 0.1°C, and from
internal variability likely to be between 0.1°C and 0.1°C.
It is
virtually certain that internal variability alone cannot account for the observed global warming
since 1951.
It is
likely that anthropogenic forcings, dominated by greenhouse gases, have contributed to the warming of the troposphere since 1961 and
very likely that anthropogenic forcings, dominated by the depletion of the ozone layer due to ozone depleting substances, have contributed to the cooling of the lower stratosphere since 1979.
Further evidence has accumulated of the detection and attribution of anthropogenic influence on
temperature change in different parts of the world.
Robustness of detection and attribution of global-scale warming is subject to models correctly
simulating internal variability.
The observed recent warming hiatus, defined as the reduction in GMST trend during 19982012 as
compared to the trend during 19512012, is
attributable in roughly equal measure to a cooling
contribution from internal variability and a reduced trend in external forcing (
expert judgment,
medium confidence).
It is
very likely that anthropogenic forcings have made a substantial contribution to upper ocean
warming (above 700 m) observed since the 1970s.
It is
very likely that there is a substantial contribution from anthropogenic forcings to the global mean sea level rise since the 1970s.
It is
very likely that oceanic uptake of anthropogenic carbon dioxide has resulted in acidification of surface waters which is observed to be between 0.0014 and 0.0024 pH units per year.
New evidence is emerging for an anthropogenic influence on global land precipitation changes, on
precipitation increases in high northern latitudes, and on increases in atmospheric humidity.
It is
very likely that anthropogenic forcings have made a discernable contribution to surface and
subsurface oceanic salinity changes since 1960's.
It is
likely that human influence has affected the global water cycle since 1960.
Anthropogenic forcings are
very likely to have contributed to Arctic sea ice loss since 1979.
Ice sheets and glaciers are melting, and anthropogenic influences are
likely to have contributed to the surface melting of Greenland since 1990 and to the retreat of glaciers since the 1960s.
It is
likely that there has been an anthropogenic component to observed reductions in northern
hemisphere snow cover since 1970.
There has been a
strengthening of the evidence for human influence on temperature extremes since
the AR4 and SREX reports.
In land regions where observational coverage is sufficient for assessment, there is
medium confidence that anthropogenic forcing has contributed to a global-scale intensification of heavy precipitation over the second half of the 20th century.
There is
low confidence in attribution of changes in tropical cyclone activity to human influence due to insufficient observational evidence, lack of physical understanding of the links between anthropogenic drivers of climate and tropical cyclone activity and the low level of agreement between studies as to the relative importance of internal variability, and anthropogenic and natural forcings.
It is
likely that human influence has altered sea level pressure patterns globally.
Taking a longer term perspective
shows the substantial role played by anthropogenic and natural
forcings in driving climate variability on hemispheric scales prior to the twentieth century.
The
extended record of observed climate change has allowed a better characterisation of the basic
properties of the climate system that have implications for future warming.
Human influence has been detected in the major assessed components of the climate system. Taken
together,
the combined evidence increases the level of confidence in the attribution of observed climate
change, and reduces the uncertainties associated with assessment based on a single climate variable.
From this combined evidence
it is virtually certain that human influence has warmed the global climate
system
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That's what you call
ROBUST.
and
You however are not honest at all. You pretend that the science is settled and have just said that AGW is proven...if it were, don't you think that the IPCC paper might include that proof.
I am skeptical because the science is in its infancy and there is more evidence against AGW than for it.....correlatory evidence is the poorest sort and that is really all you have.
I do not use the word "proven" when talking about theories of the natural sciences.
I know better.