This expansion, combined with the melting of land - based ice, has
caused global average sea level to rise by roughly 7 - 8 inches since 1900 — a trend that is expected to accelerate over coming decades.
Two major volcanoes — El Chichon in 1982 and Pinatubo in 1991 —
caused global average temperature to dip as a result of volcanic ash, soot and debris reflecting sunlight back into space.
Today scientists have very high confidence about human -
caused global average surface temperature increase — a key climate indicator.
For example Pinatubo
caused the global average temperature of the Earth to cool by about 0.5 degrees C for about 3 years.
Considering all these factors, Smith and Mizrahi suggest that targeting methane and soot will
cause global average temperatures to be only 0.16 °C lower by 2050 than they would have been otherwise, the researchers report today in the Proceedings of the National Academy of Sciences.
And a strong La Niña could also
cause the global average temperature to fall off the record pace it's been on.
For example, episodic deviations in cloud and snow cover, dust and smoke, etc, will have some radiative effect that could
cause some global average temperature change.
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.
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.
Not exact matches
It also gradually phased out subsidies that kept retail fuel cheap,
causing prices at the pump to climb by an
average of nearly 25 % since 2014, even though
global oil prices fell by as much as 75 % during that period.
The report said a price recovery is expected to
cause the most pain among companies drilling in the United States, who rely mostly on hydraulic fracturing, which isn't profitable unless the
average global price of oil is around $ 60 per barrel.
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.
Education spending had peaked at an
average of $ 11,621 per student in 2008 — 09 before the deep
global recession
caused states to slash their spending amid plummeting tax revenues.
Many governments believe that holding the
average global temperature rise
caused by man - made warming to 2 degrees Celsius above preindustrial levels gives the world the best chance to avoid dangerous climate change.
While 2014 temperatures continue the planet's long - term warming trend, scientists still expect to see year - to - year fluctuations in
average global temperature
caused by phenomena such as El Niño or La Niña.
The subsidence is
causing local sea levels to rise nearly 100 times faster than the
global average.
An international team of 27 oceanographers churned through 13
global models and concluded that carbon dioxide emissions could
cause pH levels in the ocean to drop from an
average of 8.1 today to 7.7 by the end of the century.
However, at the increased levels seen since the Industrial Revolution (roughly 275 ppm then, 400 ppm now; Figure 2 - 1), greenhouse gases are contributing to the rapid rise of our
global average temperatures by trapping more heat, often referred to as human -
caused climate change.
«It is thus extremely likely (> 95 % probability) that the greenhouse gas induced warming since the mid-twentieth century was larger than the observed rise in
global average temperatures, and extremely likely that anthropogenic forcings were by far the dominant
cause of warming.
While different organizations take up the
cause of the employees in Amazon's
global distribution centers for their wages (or perceived lack thereof), Amazon came back with a statement that it pays its employees at a higher
average than even the minimum required; this includes its seasonal employees, who typically make less than full - hire employees in every industry.
However,
global warming is
caused by natural events and human that is believed to contribute to increases in
average temperature.
Global warming can be referred to as climate change that
causes an increase in the
average temperature.
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.
But because of the necessary caveats that must be applied due to the state of the science I am starting to feel unable to say much about climate change apart from: «The increase in CO2 will very probably
cause an overall increase in
Global Average Temperature.
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.
Narrowly scoped, the present situation is either strictly
caused by solar variations (in which case I believe the «solar variation» crowd will inappropriately gain credibility over the next 10 to 20 years as we work through the next below
average solar cycle or two), or strictly
caused by CO2 concentrations (in which case I believe the «CO2 concentrations» crowd will inappropriately lose credibility as the non-linear relationship (sensitivity is based on doublings, not linear increases) between increased CO2 concentrations, and forecasts for below
average solar cycles reduces the longer term upward trend in
global temperatures).
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....
The most recent report concluded both, that
global temperatures are rising, that this is
caused largely by human activities and, in addition, that for increases in
global average temperature, there are projected to be major changes in ecosystem structure and function with predominantly negative consequences for biodiversity and ecosystems, e.g. water and food supply.
Could you point me to something authoritative that shows how the drought in Australia has been
caused by the.8 degrees Celsius increase in
global average temps.
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).
I think I know where I've been going wrong: it'll still be colder at the poles (or at high altitude) whatever the
average global temperature: the ice is a symptom of that, not a
cause.
(Orbital forcing doesn't have much of a
global annual
average forcing, and it's even concievable that the sensitivity to orbital forcing as measured in terms of
global averages and the long - term response (temporal scale of ice sheet response) might be approaching infinity or even be negative (if more sunlight is directed onto an ice sheet, the
global average albedo might increase, but the ice sheet would be more likely to decay, with a
global average albedo feedback that
causes warming).
Orbital forcing
causes ice ages or ends them by redistributing incoming solar radiation over seasons and latitudes so that ice sheet growth or decay is more or less favorable on a regional basis, with a resulting
global average albedo feedback.)
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.
Starting from an old equilbrium, a change in radiative forcing results in a radiative imbalance, which results in energy accumulation or depletion, which
causes a temperature response that approahes equilibrium when the remaining imbalance approaches zero — thus the equilibrium climatic response, in the
global - time
average (for a time period long enough to characterize the climatic state, including externally imposed cycles (day, year) and internal variability),
causes an opposite change in radiative fluxes (via Planck function)(plus convective fluxes, etc, where they occur) equal in magnitude to the sum of the (externally) imposed forcing plus any «forcings»
caused by non-Planck feedbacks (in particular, climate - dependent changes in optical properties, + etc.).)
It is extremely likely * that human activities have
caused more than half of the observed increase in
global average surface temperature since the 1950s.
There is no «proof» that these are more than natural occurrences (or, admittedly, neither that they are not) and require, for now, really contorted tortuous explanations (snow / ice getting covered with soot, Arctic really getting lots warmer than the few tenths of a degree of the
global average just the past 2 - 3 decades, etc.) why AGW is
causing them — though they are professed with religious conviction.
(57m) However, externally imposed forcings with a
global average externally imposed RF may tend to
cause similar climatic responses both in the
global average and in regional / latitudinal and seasonal (modulation of response to external - forcing cycles that themselves are held constant) and internal variability patterns, provided they are not too idiosyncratic.
Why is it that climate sceptics have been going on about the Urban Heat Island * being the
cause of the observed temperaure increase found in the
global averages, if, as you say, there is no increase in the
global averages?
It is entirely plausible that high enough
global average temperatures may suppress more extreme events than are
caused.
«Future projections based on theory and high - resolution dynamical models consistently suggest that greenhouse warming will
cause the globally
averaged intensity of tropical cyclones to shift towards stronger storms,» Knutson et al. (2010); Grinsted et al. (2013) projected «a twofold to sevenfold increase in the frequency of Katrina magnitude events for a 1 °C rise in
global temperature.»
Caused by the burning of fossil fuels, deforestation, agricultural practices, and other human impacts, climate change has currently raised
global temperatures 0.8 degrees Celsius (1.44 degrees Fahrenheit) higher than the Industrial Revolution
average.
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).
Either way, this doubling would
cause roughly 2 degrees Celsius of
global warming on
average, but it would be much more dramatic at the poles.
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!
In monthly Rasmussen polling over the past two years, an
average of 46 percent of those polled said that natural
causes are responsible for
global warming, while an
average of 38 percent answered that human activity is the
cause.
Climate scientists have been able to close the sea level «budget» by accounting for the various factors that are
causing average global sea levels to rise at the measured rate of about 3.2 millimeters per year since 1992 (when altimeters were launched into space to truly measure
global sea level).
Global average temperature didn't
cause the ice age.
Proof that CO2 has no effect on climate and identification of the two factors that do
cause reported climate change (sunspot number is the only independent variable) are at http://agwunveiled.blogspot.com (now with 5 - year running -
average smoothing of measured
average global temperature (AGT), the near - perfect explanation of AGT since before 1900; R ^ 2 = 0.97 +).