نتایج جستجو برای: radiative properties

تعداد نتایج: 893131  

2010
Gerald G. Mace

[1] Annually averaged cloud properties, cloud radiative effects, and cloud radiative heating from 20° × 20° latitude‐longitude regions in the Southern Ocean (50°S, 135°W) and the North Atlantic (55°N, 25°W) are compared using quantities derived from measurements collected by active and passive remote sensors in the NASA A‐Train. The algorithm suite used to infer cloud properties along the nadir...

2006
Enrique Álvarez

Several ways of computing the radiative corrections to the heavy boson masses in Kaluza-Klein theory are discussed. It is argued that only an intrinsically higher dimensional approach embodies all the desired physical properties.

2011
Thomas Wunderer

The properties of thin InGaN films deposited via MOVPE on non-planar GaN surfaces are investigated in detail. Using a comprehensive combination of different investigation methods including transmission electron microscopy, spatially and time-resolved cathodoluminescence experiments and modeling of the radiative recombination kinetics a precise description of the semipolar QW properties can be p...

2008
A. da Silva A. Catalano M. Giard

We investigate the effect of dust on the scaling properties of galaxy clusters based on hydrodynamic N -body simulations of structure formation. We have simulated five dust models plus a radiative cooling and adiabatic models using the same initial conditions for all runs. The numerical implementation of dust was based on the analytical computations of Montier & Giard (2004). We set up dust sim...

Journal: :فیزیک زمین و فضا 0
عظیمه زارع دانشجوی دکتری هواشناسی، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران پرویز ایران نژاد دانشیار، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران عباسعلی علی اکبری بیدختی استاد، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران

the main driving force of the earth atmospheric system is solar radiation. radiation flux determines the surface temperature and impacts life on the earth through photosynthesis. a quantitative knowledge of the earth radiation field is important to evaluate the atmosphere–surface interactions and the global hydrological cycle. various atmospheric radiative transfer models have been proposed in ...

2017
Steve Rudz Khaled Chetehouna Olivier Séro-Guillaume S. Rudz K. Chetehouna O. Séro-Guillaume

The aim of this paper is to present some improvements in the metrology of forest fire flames by coupling image processing and radiative heat flux measurement. A new metrological tool using a visual video camera and a specific multiple thermal sensor is proposed. By means of an appropriate segmentation algorithm and the Direct Linear Transformation, the image processing methodology gives the for...

2002
Tai-Hsi Fan Andrei G. Fedorov T.-H. Fan A. G. Fedorov

Radiative transfer in a semitransparent hemispherical shell placed on an opaque surface is simple yet realistic representation of the heating process encountered in various materials processing applications ranging from metallurgical slag foaming to batch foams in glass melting to hollow bead fabrication. The objective of this paper is to develop fundamental understanding and predictive models ...

2009
Laura D. Fowler David A. Randall

We have investigated the sensitivity of the intensity of convective activity and atmospheric radiative cooling to radiatively thick upper-tropospheric clouds using a new version of the Colorado State University General Circulation Model. The model includes a bulk cloud microphysics scheme to predict the formation of cloud water, cloud ice, rain, and snow. The cloud optical properties are intera...

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