Sentences with phrase «increased solar absorption»

Thus, there is a positive feedback between warming, snow aging, increased solar absorption, and reduced albedo.

In this new regime, with a complete absence of sea ice and snow in the Northern Hemisphere, with rapid warming of the arctic region due to increased solar absorption, a jump in regional temps will occur.

Sandia's new fractal - like receiver designs have increased solar absorption efficiency without the need for special coatings.

Decreasing the ratio of the high albedo to low albedo surface increases the solar absorption.

Not exact matches

Black carbon, or soot, can speed up melt by making ice dark, increasing absorption of solar energy.

This process could potentially be replicated on functional materials like solar cells to increase the absorption of sunlight, Deravi said.

Titanium is not an essential nutrient for plants, Raliya says, but boosts light absorption by increasing chlorophyll content in the leaves and promotes photosynthesis, properties Biswas» lab discovered while creating solar cells.

As this ice melts, less sunlight is reflected back to space, leading to more absorption of solar energy into the ocean and atmosphere, further increasing global temperatures.

According to the investigation: «There is a strong increasing trend in sea surface temperature over the northern Indian Ocean during the 1952 - 96 time period» and «Soot was a sizeable fraction of the aerosol mix and caused substantial absorption of solar radiation.

But the troposphere can still warm with an increased radiative cooling term because it is also balanced by heating through latent heat release, subsidence, solar absorption, increased IR flux from the surface, etc..

On the other hand both records have shown dramatic cooling in the stratosphere, where cooling is indeed expected due to increasing greenhouse gases and decreasing ozone (which heats the stratosphere due to its absorption of solar ultraviolet radiation).

Absorption of solar radiation by CO2 is minimal, and increasing CO2 should not change it in a way to mediate cooling.

If one plots temperature as a function of pressure for a sequence of increasing tau, the phenomenon is immediately apparent in cases where the upper level solar absorption is sufficiently strong.

In general, so long as there is some solar heating beneath some level, there must be a net LW + convective heat flux upward at that level to balance it in equilibrium; convection tends to require some nonzero temperature decline with height, and a net upward LW flux requires either that the temperature declines with height on the scale of photon paths (from emission to absorption), or else requires at least a partial «veiw» of space, which can be blocked by increasing optical thickness above that level.

It can also be responsible for transporting water vapor and creating cloudiness that increases the Earth's albedo which reduces the net solar energy absorption.

I admit I was wrong about the magnitude of the increase in absorption of incident solar radiation by increased CO2.

Maxlow adopts the premise that, given the outflow of particles from the Sun in the form of a plasma «solar wind,» absorption of these particles within the Earth can explain the mechanism for mass increase.

This can be affected by warming temperatures, but also by changes in snowfall, increases in solar radiation absorption due to a decrease in cloud cover, and increases in the water vapor content of air near the earth's surface.2, 14,15,16,17 In Cordillera Blanca, Peru, for example, one study of glacier retreat between 1930 and 1950 linked the retreat to a decline in cloud cover and precipitation.18

The rapid warming and increased solar radiation absorption have combined to result in younger, thinner Arctic sea ice, which therefore melts more easily, making record low extents more likely to occur.

To get forcing you need either and increase in solar energy, or a change in the earth's reflectivity (and that would need a verifiable reason) or a change in absorption of solar energy (which could be provided by GHG's).

Thermospheric temperatures increase with altitude due to absorption of highly energetic solar radiation by the small amount of residual oxygen still present.

The solar cells contain titanium dioxide coated in a dye that increases light absorption,» explains Professor Bell.

The increased absorption of solar radiation raises the temperature of the ice sheet and accelerates the melting process.

These also cause increased absorption of solar energy in summer;

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.

Chylek et al. (1996a) estimated an upper bound for increased absorption of solar radiation of 1 to 3 Wm - 2 (global and annual average) for a black carbon concentration of 0.5 mgm - 3.

A drying of the atmosphere — that the researchers note — takes place in the subtropical subsidence zone (the 30 degrees latitude) but expands towards the 30 - 45 degrees latitude — Earth's Meditteranean climates, where their model suggests net cloud cover would actually decrease most (see dotted line in first image in this article, at top)-- most notably around 500 hPa (roughly translating to a height of around 5 kilometers of altitude in the troposphere) decreasing albedo and increasing solar heat absorption, therefore net climate warming.

atmospheric absorption by CO2 and water vapor increases, reducing the solar heating at the surface, and surface evaporation increases faster with temperature than the transfer of sensible heat (due to the Clausius - Clapeyron relation), both of which tend to reduce the diurnal cycle.

If you accept diurnal variation as a proxy for net absorption, since the quantum mechanical effect of absorption is to heat the air, then you can see from Fig. 2 that most of the net absorption occurs below 850 mb and that above 500 mb the tiny amount of net absorption slowly increases showing that it is the result of the absorption of solar not terrestrial radiation.

Of note was Pouillet's analytic technique: realizing that the solar constant must be (relatively) fixed, but atmospheric absorption would differ each day due to changing atmospheric conditions; and that the latter (given sufficiently stable weather conditions) would increase as a quadratic function of the angle of the sun, Pouillet was able to tease out a simple formula to separate the two values.

What makes the blanket / person analogy imperfect is that the absorption of solar energy by the earth remains nearly constant as you increase the CO2 (put on the blanket), whereas for a mammal's body can adjust its metabolism.

Panel a: Direct warming associated with global forest cover.Panel b: Direct warming associated with forest cover between between 20 ° N and 50 ° N. Panel c: Increase in fractional absorption of solar radiation at the ground for forests relative to bare ground.