Sentences with phrase «albedo decrease for»

«Scientists have talked about Arctic melting and albedo decrease for nearly 50 years,» said Ramanathan, a distinguished professor of climate and atmospheric sciences who has previously conducted similar research on the global dimming effects of aerosols.

«Scientists have talked about Arctic melting and albedo decrease for nearly 50 years,» said Ramanathan, a distinguished professor of climate and atmospheric sciences at Scripps who has previously conducted similar research on the global dimming effects of aerosols.

Not exact matches

Also about the ice - albedo feedback within 1K temperature oscillation the albedo will change of, let us say, 10 %, so for an increase of 1K the albedo will decrease from A = 0.3 to A = 0.27.

[Response: weaker cosmic ray flux - > fewer low clouds - > decrease in sunlight reflected back to space), then you need to explain why the night temperatures appear to increase faster then day temperatures (for any amplification mechanism involving te albedo, you'd expect the opposite, as there is no sunlight to reflect on the dark side of the planet...).

[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much of the planet, water is a large positive feedback; melting snow and ice as the atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar warming than the global average; decreasing the temperature gradient from the equator to the poles is reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration of blocking highs, increasing drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse impacts from AGW?)

For example, [Kruss 1983] has this to say about the Lewis glacier on Mt. Kenya: «A decrease in the annual precipitation on the order of 150 mm in the last quarter of the 19th century, followed by a secular air temperature rise of a few tenths of a degree centigrade during the first half of the 20th century, together with associated albedo and cloudiness variation, constitute the most likely cause of the Lewis Glacier wastage during the last 100 years.»

He goes on to claim that «Pollution increases the albedo of thin clouds because but, contrary to the present theory, decreases it for thick clouds.

So for example deglaciation warmed global mean temps by about 5 C over 10k years with a radiative forcing of about 6.5 W / m2 (total of both GHG increases and albedo decreases).

Inceasing oxygen (for example form 20.9 to 30 percent) in my opinion would: Increasing scattering and so albedo, lowering temperature Increasing total pressure, broadening of absorption lines, rising temperature Increasing adiabate slope, rising SAT directly but decreasing water vapor, total effect??

A typo in mine at # 25 is where 40,000 m3 should read 400,000 m3, and an addendum is the reference for the forcing from the Albedo Loss feedback shown in the satellite record: «Observational determination of albedo decrease caused by vanishing Arctic sea ice» See: http://eisenman.ucsd.edu/publications/Pistone-Eisenman-Ramanathan-20Albedo Loss feedback shown in the satellite record: «Observational determination of albedo decrease caused by vanishing Arctic sea ice» See: http://eisenman.ucsd.edu/publications/Pistone-Eisenman-Ramanathan-20albedo decrease caused by vanishing Arctic sea ice» See: http://eisenman.ucsd.edu/publications/Pistone-Eisenman-Ramanathan-2014.pdf

This implies that the CRF levels must have systematically decreased over time, causing a long - term decrease in the low cloud fraction and hence a long - term reduction in the planetary albedo, that again would be responsible for the warming.

For instance, Han et al. (1998) showed that cloud albedo decreases with decreasing droplet size for the optically thinner clouds over the oceaFor instance, Han et al. (1998) showed that cloud albedo decreases with decreasing droplet size for the optically thinner clouds over the oceafor the optically thinner clouds over the oceans.

(7) A requirement that building retrofits conducted pursuant to a REEP program utilize, especially in all air - conditioned buildings, roofing materials with high solar energy reflectance, unless inappropriate due to green roof management, solar energy production, or for other reasons identified by the Administrator, in order to reduce energy consumption within the building, increase the albedo of the building's roof, and decrease the heat island effect in the area of the building, without reduction of otherwise applicable ceiling insulation standards.

This study concluded that although there was a decrease in sea ice in recent years there was an increase in cloudiness that more than made up for the loss of albedo from the sea ice.

We had the warm ENSO period of the 1980s / 1990s (which led to the all - time record warm year 1998), an observed decrease in late 20th C cloud cover (and albedo), the highest solar activity for several thousand years, etc..

Another issue is the potential for light - absorbing aerosols to increase in - cloud absorption of solar radiation and correspondingly decrease the cloud albedo when incorporated inside cloud droplets.

High sensitivity is caused by increasing water vapour as the tropopause rises and diminishing low cloud cover, but the sensitivity decreases for still larger CO2 as cloud optical thickness and planetary albedo increase, as shown by Russell et al. [112].

Rather, an albedo decrease (3.4 W / m ² to 6.8 W / m ²) was driving the warming for the period in question.

Loss of ice cap will decrease albedo to the point of causing an abrupt spike in temperature that will end 90 % of primary plant production, for two or three years.

The need for an explanation arises from the author's claim that the earth's albedo has increased since the year 2000, an increase that was not followed by a decrease in surface temperature.

With respect to Judith Curry: I will ask her to give references to better underpin her claims (for example on the claim that albedo increase on land due to more snow is compensating for the albedo decrease above the arctic sea).

The proposed explanation (see article: Evidence mounts that Maya did themselves in through deforestation) based on a slight change in albedo after deforestation and a corresponding decrease in solar energy available for convection does not make sense to us (although as we understand this work has not yet been published so we could not read it in detail).