The new adjustment are likely to have a substantial impact on the historical record of global -
mean surface temperatures through the middle part of the twentieth century.
Not exact matches
We quantify the interannual - to - decadal variability of the heat content (
mean temperature) of the world ocean from the
surface through 3000 - meter depth for the period 1948 to 1998.
«Radiative forcing [RF] can be related
through a linear relationship to the global
mean equilibrium
temperature change at the
surface (delta Ts): delta Ts = lambda * RF, where lambda is the climate sensitivity parameter (e.g., Ramaswamy et al., 2001).
«Radiative forcing can be related
through a linear relationship to the global
mean equilibrium
temperature change at the
surface (ΔTs): ΔTs = λ RF, where λ is the climate sensitivity parameter (e.g., Ramaswamy et al., 2001).»
Then, especially when there is excessive cloud cover over the oceans, the Sun's energy absorbed above the clouds can actually make its way down to the ocean
surface (and below) warming the oceans by non-radiative processes, not by direct solar radiation which mostly passes
through the thin
surface layer and could barely raise the
mean temperature of an asphalt paved Earth above -35 C.
Although it is generally believed that the increase in the
mean global
surface temperature since industrialization is caused by the increase in green house gases in the atmosphere, some people cite solar activity, either directly or
through its effect on cosmic rays, as an underestimated contributor to such global warming.
The high annual
mean in 2015 was because of the early onset of warm Pacific sea
surface temperatures persisting
through the year.
Without atmosphere the
surface of the ocean or land would lose o (T ^ 4 — Ts ^ 4)(1) where Ts is the
temperature of the space (about 4K) while in the presence of the atmosphere the heat losses are hc * (T — Tl)(2) and o (T ^ 4 — Tl ^ 4)(3) where (2) represents the heat transfer by convection (inclusive conduction)
through the air layer and (3) corresponds to the net flow due to the heat exchange by radiation, Tl being the
mean temperature of the air layer.
The oceans can impact global
mean surface temperature in several ways; directly,
through surface fluxes of heat, or indirectly, by altering the atmospheric circulation and impacting the distribution of clouds and water vapor.
The scientists determined their findings by using data — 5.1 million
temperature profiles — from sources around the world, to quantify the variability of the heat content (
mean temperature) of the world ocean from the
surface through 3000 meter depth for the period 1948 to 1996.
Comparison of empirical evidence with proxy - based reconstructions demonstrates that natural factors appear to explain relatively well the major
surface temperature changes of the past millennium
through the 19th century (including hemispheric
means and some spatial patterns).
Radiative forcing can be related
through a linear relationship to the global
mean equilibrium
temperature change at the
surface (ΔTs): ΔTs = λRF, where λ is the climate sensitivity parameter.