Not exact matches
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.
Clearly the rate at which TOA imbalance diffuses
into and through the
global ocean is key to how much and how quickly
global average surface temperature will rise over any given span of time.
The climate problem, whenever it is well - posed, involves the
Global Average Surface Temperature, which includes SST integrated
into a sampled GAST (time).
Parker (2004) segmented observed
surface temperature data
into lighter and stronger wind terciles in order to assess whether the reported large - scale
global -
averaged temperature increases are attributable to urban warming.
Currently, human warming by Greenhouse gasses has pushed
global average surface temperatures into a range about 1 degree Celsius hotter than the 1880s.
Global warming refers to an increase in the
average temperature of the Earth as a result of the greenhouse effect, in which gases in the upper atmosphere trap solar radiation close to the planet's
surface instead of allowing it to dissipate
into space.
There are two primary externalities that result from our emissions of carbon dioxide
into the atmosphere — 1) an enhancement of the greenhouse effect, which results in an alteration of the energy flow in the earth's climate and a general tendency to warm the
global average surface temperature, and 2) an enhancement of the rate of photosynthesis in plants and a general tendency to result in more efficient growth and an overall healthier condition of vegetation (including crops).
Unfortunately using
global average surface air
temperatures as a measure of total warming ignores the fact that most of the heat (more than 93 %) goes
into our oceans, which continue to warm without any sign of a pause, as you can see below.
In it, they documented how a change in observing practices before and after World War II produced a cold bias in the sea
surface temperatures that were incorporated
into the compilations of
global average temperatures (see here and here for more details).
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.
Last year was the hottest since records began and with an El Nino now under way the warm
surface waters of the Pacific are releasing heat
into the atmosphere with the result 2015 is likely to break last year's record and the
global average surface temperature could jump by as much as 0.1 degree this year alone bring
global surface temperatures increases to 1 degrees or half way to the UN
global limit.
m in the atmosphere, which translates
into a brightness
temperature ~ 34C for a
global annual
average, even higher than that of the
surface.
That's the word from NOAA and refers to the combined
global land and ocean
surface temperatures, which at 14.5 °C (58.1 °F) was 0.76 °C (1.37 °F) above the
average for the 20th century.Before we go
into the other NOAA bullet points, it's very worthwhile passing on a bit of caption clarification.
If heat flow
into the deeper ocean (under 300m) is driven independently of
Global Average Surface temperature or the «greenhouse» effect, then we have no reason to suppose that the latter produces any «global warming» a
Global Average Surface temperature or the «greenhouse» effect, then we have no reason to suppose that the latter produces any «
global warming» a
global warming» at all.
Specifically, the term is defined as how much the
average global surface temperature will increase if there is a doubling of greenhouse gases (expressed as carbon dioxide equivalents) in the air, once the planet has had a chance to settle
into a new equilibrium after the increase occurs.
Professor Reif wrote, «As human activities emit more greenhouse gases
into the atmosphere, the
global average surface temperature will continue to rise, driving rising sea levels and extreme weather.»