Although the IPCC climate models have performed remarkably well in projecting
average global surface temperature warming thus far, Rahmstorf et al. (2012) found that the IPCC underestimated global average sea level rise since 1993 by 60 %.
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.
The results show that even though there has been a slowdown in the
warming of the
global average temperatures on the
surface of Earth, the
warming has continued strongly throughout the troposphere except for a very thin layer at around 14 - 15 km above the
surface of Earth where it has
warmed slightly less.
With an El Niño now under way — meaning
warm surface waters in the Pacific are releasing heat into the atmosphere — and predicted to intensify, it looks as if the
global average surface temperature could jump by around 0.1 °C in just one year.
Warmer than
average temperatures were evident over most of the
global land
surface, except for parts of western Europe, northern Siberia, parts of eastern Asia and much of central Australia stretching north.
Ocean Only: The
global ocean
surface temperature for the year to date was 0.99 °F (0.55 °C) above
average, tying with 2010 as the second
warmest such period on record, behind only 1998.
In the latter half of the decade, La Niña conditions persisted in the eastern and central tropical Pacific, keeping
global surface temperatures about 0.1 degree C colder than
average — a small effect compared with long - term
global warming but a substantial one over a decade.
Warmer than
average temperatures were evident over most of the
global land
surfaces, except for parts of the United States and western Europe, northern Siberia, parts of eastern Asia and much of central Australia stretching north.
With ENSO - neutral conditions present during the first half of 2013, the January — June
global temperature across land and ocean
surfaces tied with 2003 as the seventh
warmest such period, at 0.59 °C (1.06 °F) above the 20th century
average.
«The World Meteorological Organization (WMO) said
global land
surface temperatures in January and April were likely the
warmest since records began in 1880, at more than 1 degree Celsius higher than
average for those months.
Global warming, the phenomenon of increasing
average air
temperatures near the
surface of Earth over...
With the contribution of such record warmth at year's end and with 10 months of the year record
warm for their respective months, including the last 8 (January was second
warmest for January and April was third
warmest), the
average global temperature across land and ocean
surface areas for 2015 was 0.90 °C (1.62 °F) above the 20th century
average of 13.9 °C (57.0 °F), beating the previous record warmth of 2014 by 0.16 °C (0.29 °F).
(1) The
warm sea
surface temperatures are not just some short - term anomaly but are part of a long - term observed
warming trend, in which ocean
temperatures off the US east coast are
warming faster than
global average temperatures.
global warming The increase in Earth's
surface air
temperatures, on
average, across the globe and over decades.
Two decades after the Earth Summit in Rio de Janeiro, most governments have agreed that limiting the increase in the
average surface temperature of the Earth to 2 degrees Celsius above pre-industrial levels would represent a tolerable amount of
global warming.
Cooling sea -
surface temperatures over the tropical Pacific Ocean — part of a natural
warm and cold cycle — may explain why
global average temperatures have stabilized in recent years, even as greenhouse gas emissions have been
warming the planet.
«The World Meteorological Organization (WMO) said
global land
surface temperatures in January and April were likely the
warmest since records began in 1880, at more than 1 degree Celsius higher than
average for those months.
* However, the same panel then concluded that «the
warming trend in
global - mean
surface temperature observations during the past 20 years is undoubtedly real and is substantially greater than the
average rate of
warming during the twentieth century.
Further, by
global warming I refer explicitly to the historical record of
global average surface temperatures.
-- The combined
global land and ocean
average surface temperature for the December — February period was 0.41 °C (0.74 °F) above the 20th century
average of 12.1 °C (53.8 °F), making it the 17th
warmest such period on record and the coolest December — February since 2008.
Global warming does not mean no winter, it means winter start later, summer hotter, as Gary Peters said «The global average surface temperature has risen between 0.6 °C and 0.7 °C since the start of the twentieth century, and the rate of increase since 1976 has been approximately three times faster than the century - scale trend.&
Global warming does not mean no winter, it means winter start later, summer hotter, as Gary Peters said «The
global average surface temperature has risen between 0.6 °C and 0.7 °C since the start of the twentieth century, and the rate of increase since 1976 has been approximately three times faster than the century - scale trend.&
global average surface temperature has risen between 0.6 °C and 0.7 °C since the start of the twentieth century, and the rate of increase since 1976 has been approximately three times faster than the century - scale trend.»
This was one of the motivations for our study out this week in Nature Climate Change (England et al., 2014) With the
global -
average surface air
temperature (SAT) more - or-less steady since 2001, scientists have been seeking to explain the climate mechanics of the slowdown in
warming seen in the observations during 2001 - 2013.
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
global ocean
surface temperature for the year to date was 0.34 °C (0.61 °F) above the 20th century
average and was the 14th
warmest such period on record.
The
global ocean
surface temperature for the same period was 0.33 °C (0.59 °F) above the 20th century
average and was the 15th
warmest such period on record.
The net effect of these anomalous winds is a cooling in the 2012
global average surface air
temperature of 0.1 — 0.2 °C, which can account for much of the hiatus in
surface warming observed since 2001.
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).
«On May 22nd, 2014,
global sea
surface temperature anomalies spiked to an amazing +1.25 degrees Celsius above the, already
warmer than normal, 1979 to 2000
average.
The sea
surface temperatures along the coast are 5 degrees F. or more above
average and 1 degree F. is from
global warming.
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.
For most recent sampling see: New Peer - Reviewed Study finds «Solar changes significantly alter climate» (11-3-07)(LINK) & «New Peer - Reviewed Study Halves the
Global Average Surface Temperature Trend 1980 — 2002» (LINK) & New Study finds Medieval
Warm Period «0.3 C
Warmer than 20th Century» (LINK) For a more comprehensive sampling of peer - reviewed studies earlier in 2007 see «New Peer - Reviewed Scientific Studies Chill
Global Warming Fears» LINK]
As critics of «
global warming» science have pointed out for years, there are serious issues with the
surface temperature datasets that result in corrupted
global average temperatures that are currently used by policymakers.
Data from the Met Office Hadley Centre and the University of East Anglia's Climatic Research Unit for
global average near -
surface temperatures confirm that 2017 was the
warmest year on record without the influence of
warming from El Niño.
The hottest topic in climate research is the observation that
global average surface temperature, as well as satellite observations of
temperatures in the atmosphere, has shown little or no
warming during the 21st century.
World Meteorological Organization also confirmed 2017 as being among the three
warmest years, and the
warmest year without an El Niño, by consolidating the five leading international datasets, including HadCRUT4, which showed that overall the
global average surface temperature in 2017 was approximately 1.1 ° Celsius above the pre-industrial era.
Anthropogenic GHG
warming is about the Earth's energy balance, and thus, looking at an
average global near -
surface temperature, or the total ocean heat content can tell us something useful about that energy balance.
However, as we have previously discussed, the
average global surface temperature over the first decade of this century has indeed
warmed at a dampened rate.
The crux of Bates» claim is that NOAA, the federal government's top agency in charge of climate science, published a poorly - researched but widely praised study with the political goal of disproving the controversial
global warming hiatus theory, which suggests that
global warming slowed down from 1998 until 2012 with little change in globally -
averaged surface temperatures — a direct contrast to
global warming advocates» claim that the earth's
temperature has been constantly increasing.
That is why, to us, the rise in the concentration of these greenhouse gases manifests itself as
global warming, a rise in the
average temperatures over the Earth's
surface.
The
average of the NASA GISS, NOAA, and HadCRUT4
global surface temperature data sets shows a 0.08 °C
warming from 2000 through 2011 (Figures 1 and 3).
But 2015 is the height of a very large El Niño, a quasi-periodic
warming of tropical Pacific waters that is known to kite
global average surface temperature for a year or so.
Global average surface air temperature is one of the most well - recognized metrics of contemporary climate change — hence the term «global warming&r
Global average surface air
temperature is one of the most well - recognized metrics of contemporary climate change — hence the term «
global warming&r
global warming».
We might expect «
global warming» (i.e., an increase in
average surface air
temperatures over a few decades) to lead to a rise in
global mean sea levels.
If you read it closely, you will see that there is nothing in the NASA link you cited that refutes the observed fact that
global average surface temperature has stopped
warming since 2001 or 1998.
But the data released today confirm that human - induced
global warming is pushing
temperatures higher at an alarming rate: 2014 was the previous record holder for
global average surface temperature, clocking in at 0.57 °C above the 1960 to 1990
average, but last year was 0.75 °C above that
average.
These facts were enough for an NAS panel, including Christy, to publish a report Reconciling Observations of
Global Temperature Change which concluded that «Despite differences in temperature data, strong evidence exists to show that the warming of the Earth's surface is undoubtedly real, and surface temperatures in the past two decades have risen at a rate substantially greater than average for the past 100 y
Temperature Change which concluded that «Despite differences in
temperature data, strong evidence exists to show that the warming of the Earth's surface is undoubtedly real, and surface temperatures in the past two decades have risen at a rate substantially greater than average for the past 100 y
temperature data, strong evidence exists to show that the
warming of the Earth's
surface is undoubtedly real, and
surface temperatures in the past two decades have risen at a rate substantially greater than
average for the past 100 years»
The exchange of cold and
warm water at 60 year cycles leads to a puny 0.1 C change in
global average surface temperature.
The annual anomaly of the
global average surface temperature in 2014 (i.e. the
average of the near -
surface air
temperature over land and the SST) was +0.27 °C above the 1981 - 2010
average (+0.63 °C above the 20th century
average), and was the
warmest since 1891.
While the
warming of
average global surface temperatures has slowed (though not nearly as much as previously believed), the overall amount of heat accumulated by the
global climate has not, with over 90 percent being absorbed by the oceans.
During that same period,
average annual rainfall in New South Wales declined by 3.6 inches (92 millimeters).3 Scientists think the decline in autumn rainfall in southeast Australia since the late 1950s may be partly due to increases in heat - trapping gases in Earth's atmosphere.3, 14 Major bushfires over southeast Australia are linked to the positive phase of an ocean cycle called the «Indian Ocean Dipole» — when sea
surface temperatures are
warmer than
average in the western Indian Ocean, likely in response to
global warming.15, 16