Sentences with phrase «effective temperature of»

This results in a reduction in the effective temperature of the emission across the tropopause by ~ (6.5 K / km)(150 m) ≈ 1 K, which converts to 4 W m — 2 using the Stefan - Boltzmann law.»

For example, using 0.4 for albedo, and an insolation of 1400 W m − 2, one obtains an effective temperature of about 245 K. [25] Similarly using albedo 0.3 and solar constant of 1372 W m − 2, one obtains an effective temperature of 255 K. [26][27]

The effective temperature of almost 220K is only a little colder that at other latitudes.

If the actual «surface» happens to be 15 C or 390 Wm - 2 equivalent after about 100 Wm - 2 of latent and convective cooling, the effective temperature of the surface would be about 31 C degrees (@ 490Wm - 2 equiv.).

Therefore the Earth essentially radiates from some layer in the atmosphere and the effective temperature of this layer has to then be the non-GHG temperature.

You seem to think that doubling atmospheric CO2 will affect the effective temperature of the Earth, even more that two are proportional?

Outer space (at an effective temperature of around 3 ° Kelvin) would correspond to the tail - pipe.

The point is that, relative to what astronomers call the effective temperature of a planet, CO2 is warming the Earth.

The effective temperature of that warming is 254 C.

Since the Earth radiates approximately 240Wm - 2 of energy which has an effective temperature of 255K degrees, 255K to 249K is often chosen.

The effective temperature is how hot the Earth looks from space, as a result of being in equilibrium with incoming heat from the Sun: heat in equals heat out, and one can deduce the effective temperature of the Earth from that balance.

«The Sun's photosphere has a temperature between 4500 and 6000 K (with an effective temperature of 5777 K) and a density of about 2 × 10 − 4 kg / m3; [5] other stars may have hotter or cooler photospheres.

Why is this so much warmer than the 255 K effective temperature of the thermal radiation emitted to space?

The net forcing is negative as the effective temperature of the clear and cloudy sky is less than the ocean skin temperature, and it approaches values closer to zero when the sky is cloudy.

The sun, by comparison, has an effective temperature of 9,900 F (5,500 C).

From high - resolution spectroscopy of the star we estimate a stellar effective temperature of Teff = 6100 + / - 150 K, and from high - precision z and B photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be a / R = 6.03 + / - 0.13.

By combining our atmospheric characterisation with the age and metallicity constraints arising from the probable membership to the AB Doradus moving group, we find that CFBDSIRJ214947.2 - 040308.9 is probably a 4 - 7 Jupiter masses free - floating planet with an effective temperature of ~ 700K and a log g of ~ 4.0, typical of the late T - type exoplanets that are targeted by direct imaging.

[17] The star is radiating 1.5 [10] times the Sun's luminosity from its photosphere at an effective temperature of 6,149 K. [11]

Kepler - 421b receives the same insolation as a body at ~ 2AU in the Solar System and for a Uranian albedo would have an effective temperature of ~ 180K.

The star has an effective temperature of 5757 $ \ pm $ 85 K and a log g of 4.32 $ \ pm $ 0.09.

It is a giant star of the spectral type K2III [3] with an effective temperature of 4,638 [8] kelvins.

KELT report a G2 star with an effective temperature of 5770 ± 50 K, a surface gravity (log g) of 4.39 ± 0.05, and a mass and radius of 1.09 ± 0.05 and 1.10 ± 0.08 in solar units, whereas WASP report a G3 star with effective temperature of 5700 ± 150 K, a surface gravity of 4.5 ± 0.2, and a mass and radius of 1.05 ± 0.08 and 1.11 ± 0.05.

In a recent paper titled, «Demarcating circulation regimes of synchronously rotating terrestrial planets within the habitable zone,» my co-authors and I analyze a set of climate model calculations to examine the dependence upon stellar effective temperature of the atmospheric dynamics of planets as they move closer to the inner edge of the habitable zone.

Not exact matches

It's not surprising that in a 2015 Leesman survey of nearly 136,000 respondents, the top 3 features identified as the most important part of an effective workspace were all directly related to physical comfort: desk, chair, and temperature control.

The HT100 HACCP Touch is an easy and cost - effective device for collecting, recording and storing daily temperatures of critical items in receiving, storage, prep, cooking and holding as well as many of the other checklists you've been filling out by hand.

Low temperature and lower pressure have proven to be the most effective method of obtaining all of the essential constituents from the plant, and provide our products with the very best quality fragrances available.

One of the primary factors in the design of a highly effective wine cooling system is that the system must be capable of achieving the necessary temperature for wine production.

That being said, it's important to note that tracking your basal body temperature is the least effective method of birth control.

This period is marked by fragility of the infant in terms of environmental adaptation to extreme hot and cold temperatures, sucking ability to have an effective feeding pattern, an established sleeping schedule, emotional security with the care takers and proper positioning when sleeping, feeding and burping.

The DEC has closed Adirondack snowmobile and seasonal access roads, effective immediately, citing the area's warm temperatures and a lack of snow.

Happily, all three hydration strategies appear to be effective, and the dogs showed similar behavior, body temperature, and work performance regardless of the way they were hydrated.

«Energies on the order of an electron volt are typical on an atomic basis and correspond to an effective temperature on the order of 10,000 kelvins.

Devices made of silicon carbide and gallium nitride — conventional semiconductors — hold promise for extended high - temperature operation but are still not cost - effective for high volume applications.

So it's a very effective way, with almost no energy input, to change the energy balance of Earth and therefore the temperature.

Heterothermy, the ability of some animals to lower their metabolism and body temperature, is traditionally seen as an effective adaptation to predictable seasonal bottlenecks of unproductive cold periods.

Polymeric carbon nitrides are not only non-toxic and cost - effective, they are also extremely durable because they are chemically very stable and can withstand temperatures of up to about 500 °C.

Our study of the faster increases in apparent temperature has produced important findings for this kind of climate change impact assessment, providing a strong scientific support for more stringent and effective climate change mitigation efforts to combat global warming.»

If an LED system does not have an effective way of getting rid of excess heat, rising temperatures will damage LED components, dimming the light and curtailing its lifetime, according to the U.S. Department of Energy.

Increasing the indoor temperature set point to values in the range of 26 - 29 °C (79 - 84 °F) and simultaneously providing occupants with personally controllable fans could be a cost - effective, sustainable and energy - efficient option for providing thermal comfort in new and existing buildings in the tropics, said Schiavon.

In a multicenter, international study of infants and children who suffered cardiac arrest while in the hospital, NIH - funded researchers have found that body cooling, or therapeutic hypothermia, is no more effective than actively keeping the body at a normal temperature, or therapeutic normothermia.

The red line shows the effective temperature forcing of greenhouse gases and aerosols (converted to CO2), and the blue line shows the forcing from both those manmade sources and natural factors, like solar radiation.

Like Sirius, however, Altair radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Altair.

Here, we first determine the temperature - dependent effective amorphous - amorphous interaction parameter, χaa (T), by mapping out the phase diagram of a model amorphous polymer: fullerene material system.

Like Sirius, however, Vega radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Vega.

If confirmed, any of these would be among the coolest known YMG members and would help to determine the effective temperature at which young brown dwarfs cross the L / T transition.

We find a stellar effective temperature Teff = 5455 + -100 K, a metallicity of [Fe / H] = 0.01 + -0.04, and a surface gravity of log (g) = 4.4 + -0.1.

From high - resolution spectroscopy of the star, we find a stellar effective temperature Teff = 5541 \ pm 60 K, a metallicity [Fe / H] = -0.13 \ pm 0.06, and a surface gravity log (g) = 4.59 \ pm 0.10.

However, we also specifically show how high - contrast AO and speckle imaging observations detect companions at larger separations ($ \ theta \ geq $ 0.02 - 0.05») that are missed by the spectroscopic technique, provide additional information for characterizing the companion and its potential contamination (e.g., PA, separation, $ \ Delta $ m), and cover a wider range of primary star effective temperatures.

We measure equivalent widths of spectral features, derive calibration relations using stars with interferometric measurements, and estimate stellar radii, effective temperatures, masses, and luminosities for the K2 planet hosts.

We derived the Lbol of the components and compared them with theoretical evolutionary models to estimate the masses and effective temperatures.