sky radiation

Night sky radiation also can cause surface temperatures to fall below air temperatures (see Figure 2).

Utilization of sun and sky radiation for heating and cooling buildings.

See diffuse sky radiation for more details.

This includes direct sunlight, diffuse sky radiation, and (often) both of these reflected from the Earth and terrestrial objects.

The pyranometer : an instrument for measuring sky radiation (1916 with Abbot)

There is essentially no direct sunlight under an overcast sky, so all light is then diffuse sky radiation.

It is also called skylight, diffuse skylight, or sky radiation and is the reason for changes in the color of the sky.

In a 2006 study, the Bay of Islands was found to have the second Diffuse sky radiation in the world, after Rio de Janeiro.

There are four commonly detectable points of zero polarization of diffuse sky radiation (known as neutral points) lying along the vertical circle through the sun.

Several different sensors are used to obtain global solar radiation, sky radiation, reflected solar radiation, net radiation, and daylight illumination.

Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere.

Thus, the solution scheme is kept simple, and the solar and sky radiation terms from all facades can be aggregated and distributed to internal temperature nodes as gains/losses.

Rayleigh scattering of sunlight in the atmosphere causes diffuse sky radiation, which is the reason for the blue color of the sky and the yellow tone of the sun itself.

The solid angle configuration factor of a ring from the cloud surface was calculated and the sky radiation to the hemisphere was obtained by summing up the radiation of the rings.

Therefore, variations in both the quantity and quality of ultraviolet in both the direct solar beam and diffuse sky radiation are important factors in the design and evaluation of weathering tests.

D0640 Diffuse solar radiation Diffuse skylight, Sky radiation Downward scattered and reflected solar radiation, coming from the whole hemisphere of the sky with the exception of the solid angle subtended by the Sun's disc.

Water build-up: Should transient condensation occur on the underside of the metal cladding, for example due to the combination of high ambient humidity and cold night sky radiation, it does not lead to a build-up of water within the material.

Sunlight on Mars would be more or less like daylight on Earth during a slightly overcast day, and, as can be seen in the pictures taken by the rovers, there is enough diffuse sky radiation that shadows would not seem particularly dark.

Some models have polarized lenses, made of Polaroid polarized plastic sheeting, to reduce glare caused by light reflected from non-metallic surfaces such as water (see Brewster's angle for how this works) as well as by polarized diffuse sky radiation (skylight).

Both instruments are based on a circular scanning sky strategy, consisting of a 60 rpm spinning flat mirror directing the sky radiation into an off-axis paraboloidal antenna, whose size is 1.8-m in the COSMO15 and 2.4-m in the COSMO11.

Of the total light removed from the direct solar beam by scattering in the atmosphere (approximately 25% of the incident radiation when the sun is high in the sky, depending on the amount of dust and haze in the atmosphere), about two-thirds ultimately reaches the earth as diffuse sky radiation.