Sentences with phrase «stratospheric water vapor also»

The climate model reproduces the temperature trends only when stratospheric water vapor also increases.

Not exact matches

The stratopsheric cooling may be caused by the tropospheric water vapor (see figure 3 of http://www.springerlink.com/content/6677gr5lx8421105/fulltext.pdf)-- but in that figure water vapor is fixed only above sigma = 0.14 (~ 140 hPa), so the cooling may also be caused by the increase in lower stratospheric water vapor.

Oinas et al also show that stratospheric dynamics make their contribution in the polar vortex regions to produce local warming in the 1 mb region for the uniformly applied increase in stratospheric water vapor.

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).

The article also identifies the problem with stratospheric water vapor eg Solomon which suggests that the decrease in SWV has reduced the radiative forcing by around.1 wm ^ 2.

Others argue that a plethora of recent small volcanoes, changes in stratospheric water vapor, and a downturn in solar energy reaching the Earth may also be contributing to the slow - down.

The use of water vapor is also misleading — the findings of Solomon did not include any claim that stratospheric water vapor was unrelated to the concentration of other GHGs, only that it had declined recently (perhaps) for unknown reasons.

They also point out that an increase in stratospheric water vapor during the 1990s may have led to about 30 percent more warming during that decade than otherwise would have occurred.