Sentences with phrase «with radiative transfer»

JimD, «There is a thought experiment that can be helped with a radiative transfer model like Modtran.

Prigent, C., J.R. Pardo, M.I. Mishchenko, and W.B. Rossow, 2001: Microwave polarized scattering signatures in clouds: Special Sensor Microwave / Imager (SSM / I) observations interpreted with radiative transfer simulations.

Well, as you can see from this thread, you might be OK with radiative transfer code, but plenty of others are confused about radiation and the conservation of energy, in general.

So how does that compare with the radiative transfer model, which gives a model - derived experimental result of 2xCO2 climate sensitivity of 0.2 °C.

Compare this with the difference between atmosphere and space (with radiative transfer).

Satellite instruments provide global maps of surface UV irradiance by combining backscattered radiance measurements with radiative transfer models.

I actually don't deal with radiative transfer, there are enough papers (see among others the reference above) that do that quite nicely.

Do you agree with the century old science that explains that 33 C and 150 W / m2 is the current level of GHG warming and that science can explain it quantitatively with radiative transfer theory, or would you even dispute Arrhenius?

I have never heard of anyone use the term «impedance» in connection with radiative transfer, unless they were talking about the impedance to the electromagnetic field...

These models consist of connected sub-modules that deal with radiative transfer, the circulation of the atmosphere and oceans, the physics of moist convection and cloud formation, sea ice, soil moisture and the like.

[Response: Hansen's degree was in astrophysics, not astronomy, and dealt with radiative transfer in the Venusian atmosphere as a function of aerosols and greenhouse gases — pretty relevant I'd say.

Comparing our images with a radiative transfer model we argue that the southern side of the disk is most likely the nearest.

A particular emphasis of Hayward's research is on combining hydrodynamic simulations of galaxy formation with radiative transfer calculations to create «forward models» of observable quantities, such as images and spectra, that can be directly compared with data from telescopes such as the Hubble Space Telescope.

Not exact matches

We construct a radiative transfer model that accounts for the main characteristics of the features with an inner and outer disk misaligned by ~ 72 degrees.

Combining these new images and photometry with ancilliary data from the literature, we undertook simultaneous multi-wavelength modelling of the discs» radial profiles and spectral energy distributions using three different methodologies: single annulus, modified black body, and a radiative transfer code.

Radiative transfer in the earth's atmosphere is not particularly amenable to simple formulas because the atmosphere is semi-transparent to differing degree at different wavelengths, which allows radiation emitted locally to interact with the entire atmosphere.

The response of an irrational person is to declare level 2 or level 3 science as «settled science», «a fact on par with the theory of infrared radiative transfer of gases.»

As to the radiative transfer math, it's my understanding that it's not really amenable to hand calculation — the calculations are too voluminous, I think — which is why that piece of the puzzle didn't get thoroughly nailed down until it became possible to automate the calculations with computers.

Unfortunately, radiative transfer is immune to political pressure and exists independently of any plan people propose to deal (or not) with the situation.

The radiative transfer problem is best addressed numerically with a sufficient number of vertical layers to resolve the atmospheric temperature and absorber distributions and with a sufficient number of spectral intervals to resolve the spectral dependence of the contributing gases — as is being done in most GCMs.

I would argue that if we use a simple radiative model with a variety of assumptions, no upper atmosphere cooling but only warming will occur with increased CO2 (see # 333), based on the radiative transfer equations and the Second Law of thermodynamics, but when other complexities are introduced, this might change.

Precise attribution is difficult because there is significant overlapping absorption with varying degrees of saturation, and there is the need to take into account the vertical structure and time - spatial distribution of absorbers, requiring a good climate GCM with good radiative transfer.

One can not define a temperature at any point in the column with latent heating alone, without appealing to radiative transfer.

With funding from the U.S. Department of Energy, AER has developed the highly accurate and efficient radiative transfer code RRTMG for application to global models.

In these planetary GCMs, we use a relatively simple two - stream radiative transfer for scattering and absorbing atmospheres, with assumed diffuse incident of solar radiation at the top of the model domain.

The moon example was to illustrate that with radiative heat transfer, cooler objects can transfer heat to warmer ones, because heat outflux is solely dependent on the temperature and material properties of the radiator.

For idealized GCMs, we use the FMS dynamical core (that is, the basic numerical schemes FMS provides for the hydrostatic primitive equations), with various idealizations for the lower boundary conditions, for radiative transfer, and for moist or dry convection.

3) Under the assumption of radiative equilibrium, it can be shown that the surface temperature of a planet would slightly and non linearily increase with the concentration of IR active gases (primarily H2O) if and only if radiation was the only mean for energy transfer.

It only gets worse with his subsequent (2007, 2010, 2014) publications — all in obscure journals that have no credible reviewing capability for radiative transfer modeling topics.

Scientists seem to persist in thinking the problem is the public's understanding of climate science; if they only understood infrared radiative transfer, they would be on board with the inevitable policy prescription from that scientific understanding.

If you really want to know what is going on with the global average IR radiation field and you or your experts have some knowledge of quantitative IR radiative transfer, you (or the others) may compute precisely this physical quantity using only first principles and real observations.

Studies have shown that these radiative transfer models match up with the observed increase in energy reaching the Earth's surface with very good accuracy (Puckrin 2004).

He computes the all - sky (average clear + cloudy) atmospheric data with a clear - sky (no - cloud) radiative transfer program.

This remains to be seen, of course, but it's important to point out that the trospospheric amplification prediction does not originate in the models but in the basic physics of radiative transfer in combination with the Clausius - Clapeyron relationship describing the change in atmospheric water vapor as a function of temperature.

The SASBE could, for example, be used to constrain a radiative transfer model to provide top - of - the - atmosphere radiances with traceable uncertainty estimates.

As you say, convection uses up a lot of energy too and also counters the idea of radiative heat transfer as a big ticket item because «hot» CO2 molecules only remain so for a brief fraction of a second before they collide with N2 or O2 to warm that localised parcel of air; which then rises to attain equilibrium T somewhere higher and at a COLDER temp so no rad Transf!!!

A: A number of issues associated with climate change are fundamental physics topics, including the connection between greenhouse gas increases and warming, radiative transfer, spectroscopy, thermodynamics, and energy balance.

Let me once again illustrate this with the use of radiative transfer models to estimate the change in radiative forcing for a doubling of CO2.

The emissivity is combined with the surface effective temperature, sometimes called the skin temperature, in the radiative transfer equation.

«The dual wave and particle nature of radiation is recognised, but it is considered more appropriate, and indeed necessary, for an understanding of radiative heat transfer to consider the frequencies and intensities associated with the wave nature of radiation, for only then can the one - way transfer of heat be described and quantified in a meaningful manner.»

The problem with this particular fantasy kim is that the physics of radiative transfer mean that increasing the fraction of atmospheric CO2 will cause energy to accumulate in the climate system (mainly the global ocean)-- exactly as observed.

Therefore, any absorption band within spitting distance of 57 microns should be taken into account with respect to radiative - transfer effects on the energy - transport question; anything very far away need not be.

The problem with many reactions is that they focus on something else altogether — namely radiative transfer and then seem to construct relations between radiative transfer and my post which are simply not there.

Iacono, M. J., J. S. Delamere, E. J. Mlawer, M. W. Shephard, S. A. Clough, and W. D. Collins (2008), Radiative forcing by long - lived greenhouse gases: Calculations with the AER radiative transfer models, J.Radiative forcing by long - lived greenhouse gases: Calculations with the AER radiative transfer models, J.radiative transfer models, J. Geophys.

same with the laws of radiative transfer

I thought that in the adiabatic case (in order to mirror the atmosphere) there is nil radiative or conductive heat flow.That is the standard atmosphere model where conduction is very small compared with other energy transfers.

Furthermore, on 22 April 1981 Mr. Gilbert Plass wrote that, whilst on the faculty at Johns Hopkins University during that period (1946 - 1955), he became interested in infrared spectroscopy — specifically in regards to pressure broadening of spectral lines (in explaining radiative transfer in the earth's atmosphere)-- and collaborated with Mr. John Strong in the above article because the need for [quote] «mathematical methods» [endquote], applicable to water, carbon dioxide and ozone, was obvious to him then.

We will also assume that the gas does not absorb or emit at the frequencies associated with these temps (i.e. we can ignore radiative transfer).

So simply from basic thermodynamics and heat transfer considerations when you're dealing with a radiative imbalance El Nino is likely to heat the earth up as much as La Nina cools it.

The reason is that for a macroscopic object such as an ordinary mercury thermometer or a spacecraft, radiative heating and cooling processes will dominate (by orders of magnitude) over convective heat transfer with the thin thermosphere.