Sentences with phrase «radiative forcing changes without»

We may — like the IPCC — draw the conclusion that the radiant flux changes are dominated by cloud radiative forcing changes without information on clouds.

Not exact matches

First, for changing just CO2 forcing (or CH4, etc, or for a non-GHE forcing, such as a change in incident solar radiation, volcanic aerosols, etc.), there will be other GHE radiative «forcings» (feedbacks, though in the context of measuring their radiative effect, they can be described as having radiative forcings of x W / m2 per change in surface T), such as water vapor feedback, LW cloud feedback, and also, because GHE depends on the vertical temperature distribution, the lapse rate feedback (this generally refers to the tropospheric lapse rate, though changes in the position of the tropopause and changes in the stratospheric temperature could also be considered lapse - rate feedbacks for forcing at TOA; forcing at the tropopause with stratospheric adjustment takes some of that into account; sensitivity to forcing at the tropopause with stratospheric adjustment will generally be different from sensitivity to forcing without stratospheric adjustment and both will generally be different from forcing at TOA before stratospheric adjustment; forcing at TOA after stratospehric adjustment is identical to forcing at the tropopause after stratospheric adjustment).

do you believe that the tropopause region for which the anthropogenic radiative forcing is calculated can warm the nearly 65 K warmer Earth's surface without any compensating changes?

We use the estimation of radiative forcing for a doubling of CO2 to estimate that, without feedbacks, this change in radiative forcing would result in a rise of global temperatures of 1.2 C.

With a nitrogen only atmosphere that was as dense as the Earth's it would be much warmer though without any radiative forcing changes.

Representative Concentration Pathway 6.0 (RCP6) is a pathway that describes trends in long - term, global emissions of greenhouse gases (GHGs), short - lived species, and land - use / land - cover change leading to a stabilisation of radiative forcing at 6.0 Watts per square meter (Wm − 2) in the year 2100 without exceeding that value in prior years.

This is achieved through the study of three independent records, the net heat flux into the oceans over 5 decades, the sea - level change rate based on tide gauge records over the 20th century, and the sea - surface temperature variations... We find that the total radiative forcing associated with solar cycles variations is about 5 to 7 times larger than just those associated with the TSI variations, thus implying the necessary existence of an amplification mechanism, although without pointing to which one.

Conversion from the forcing to a change in effective radiative black body temperature is well defined and without any additional uncertainty, when the effective radiative temperature is defined as the temperature of a black body that radiates as much IR energy as the Earth.

In this manner, Hansen and Sato use climate models to help them estimate past radiative forcings and surface temperature changes using paleoclimate data without influencing their climate sensitivity estimates.

Methane is an important part of the anthropogenic radiative forcing Methane emissions have a direct GHG effect, and they effect atmospheric chemistry and stratospheric water vapour which have additional impacts natural feedbacks involving methane likely to be important in future — via wetland response to temperature / rain change, atmospheric chemistry and, yes, arctic sources There are large stores of carbon in the Arctic, some stored as hydrates, some potentially convertible to CH4 by anaerobic resporation [from wikianswers: Without oxygen.

In other words, if I increase substance X by 1 % in the atmosphere, what is the effective change in radiative forcing (or temperature), either with or without water vapor feedbacks?

«Warming during the past half century can not be explained without external radiative forcing Global Extremely likely (> 95 %)[1] Anthropogenic change has been detected in surface temperature with very high significance levels (less than 1 % error probability).

The direct CO2 radiative forcing is the change in infrared radiative fluxes for a doubling CO2 (typically from 287 to 574 ppm), without any feedback processes

The most important consequence of this approach is that one would after all be able to relate accurately enough radiative forcing and no feedback CO2 sensitivity without the need to go through all the changes in the atmosphere that follow from an increased surface temperature.

The direct CO2 radiative forcing is the change in infrared radiative fluxes for a doubling CO2 (typically from 287 to 574 ppm), without any feedback processes (e.g. from changing atmospheric water vapor amount or cloud characteristics.)