Sentences with phrase «changes in albedo shown»

Figure 12: «Earthshine changes in albedo shown in blue, ISCCP - FD shown in black and CERES in red.

Not exact matches

Claquin et al's model - derived findings show a change in tropical atmospheric forcing of «-- 2.2 to — 3.2 W m — 2» between PI and LGM earth, due to the increased albedo of atmospheric dust.

It is not that the polar regions are amplifying the warming «going on» at lower latitudes, it is that any warming going on AT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...»

«Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...»

At best, maybe jetfuel would be on to something if the change in seasonal ice / snow cover in Canada is measurably altering the albedo, as scaddenp notes, but I doubt we'll see jetfuel come up with any evidence showing the existence or magnitude of such an effect.

The change in albedo equates to a change in energy received; as Figure 1 shows, it is approximately 10 watts per square meter (W / m2) for the period of record.

As I pointed out at the Bishop, a recent update of the Met Office model shows changes of up to 15 W / m ^ 2 due to «improvements» in albedo and emissivity.

Charney was indulging in speculation, for computer models of the time were too crude to show what a regional change of albedo would actually do to the winds.

For example, I show in «The Tropical Thunderstorm Hypothesis» that the change from clear to cumulus conditions increases the albedo by about 60 w / m2, a large effect.

Figure 1 shows change in clear - sky albedo between the mean of the last five Septembers (2007 — 2011) and the mean of the first five Septembers (2000 — 2004) of the CERES record.

frankclimate: Tsushima and Manabe (2013) shows that various AOGCMs disagree seriously with each other and with CERES about the change the seasonal cycle for: 1) OLR from cloudy skies, 2) OSR from cloudy skies, and 3) OSR from clear skies (seasonal change in surface albedo).

A slight change of ocean temperature (after a delay caused by the high specific heat of water, the annual mixing of thermocline waters with deeper waters in storms) ensures that rising CO2 reduces infrared absorbing H2O vapour while slightly increasing cloud cover (thus Earth's albedo), as evidenced by the fact that the NOAA data from 1948 - 2008 shows a fall in global humidity (not the positive feedback rise presumed by NASA's models!)

Hall and Qu (2006) showed that differences among models in seasonal northern hemisphere surface albedo changes are well correlated with global - warming albedo changes in CMIP3 models.

Recent research has shown that temperature changes in the Arctic are magnified by feedback over and above the effect of changing albedo due to reduced snow and ice cover.

Figure 2 shows changes in albedo calculated in Palle 2004 from reconstructed satellite data (black line) and Earthshine measurements (blue line).

I've always said that the current drop in Arctic Ice Extent might have roots in soot from the industrialization of Asia causing an albedo change which really took off in the 1990 ′ s, would show up in the summer melt season when solar irradiance is at a peak in the Arctic.

Hall and Qu (2006) show that biases of a number of MMD models in reproducing the observed seasonal cycle of land snow cover (especially the spring melt) are tightly related to the large variations in snow albedo feedback strength simulated by the same models in climate change scenarios.

Does anyone know of a good graph which shows the change in albedo over the last... well, as far back as possible?