Clouds also absorb and
reflect radiation emitted from Earth's surface.
10 How the Atmosphere Affects Climate (Page 273) Earth's atmosphere can absorb and
reflect radiation emitted from the Sun and from Earth's surface.
Not exact matches
The dosimeter can determine the level of free radicals by comparing the amount of microwave
radiation emitted with the amount that is
reflected.
They then looked at another source of data: that of the Clouds» and Earth's Radiant Energy System (CERES) satellite instruments which measure fluxes of
reflected and
emitted radiation from Earth to space, to help scientists understand how the climate varies over time.
Dark matter is an unseen substance that does not, as CERN explains, absorb,
reflect or
emit electromagnetic
radiation such as light.
Direct imaging can be done by using starlight
reflected off the planet or thermal infrared
radiation emitted by the planet.
What other things in the Earth system will change when it warms up that will affect how much SW
radiation is
reflected back into space [eg ice - albedo feedback, cloud changes] or affect what proportion of
emitted LW
radiation is allowed to escape to space [eg Water Vapour, cloud changes].
But in the transparent windows, the
radiation field is «hotter» (being a combination of
reflected SWR and
emitted «hot» ground LWR), so in the lines, it is «colder»: the lines appear thus as absorption lines from the space, with a lower brightness temperature than the continuum.
Gases and clouds in the atmosphere absorb,
emit, and
reflect radiation.
Because the climate system derives virtually all its energy from the Sun, zero balance implies that, globally, the amount of incoming solar
radiation on average must be equal to the sum of the outgoing
reflected solar
radiation and the outgoing thermal infrared
radiation emitted by the climate system.
However, since the Earth
reflects about 30 % of the incoming sunlight, the planet's effective temperature (the temperature of a blackbody that would
emit the same amount of
radiation) is about − 18 °C, about 33 °C below the actual surface temperature of about 14 °C.
If CO2 actually possessed the capacity to
emit «powerful back
radiation» its thermal conductivity results would
reflect this by being larger not smaller.
The total
radiation leaving one side of the layer is the external
radiation reflected back by the interface,
radiation emitted internally by the layer and transmitted through the interface,
radiation scattered by sites inside the layer and transmitted through the interface, and
radiation transmitted through the layer from the surroundings on the opposite side.
Forests also
emit large amounts of water vapour, which
reflects solar
radiation back into space.
CO; 2 Observations of the Infrared Radiative Properties of the Ocean «[I] t is necessary to understand the physical variables contributing to sea surface
emitted and
reflected radiation to space.The emissivity of the ocean surface varies with view angle and sea state, the reflection of sky
radiation also depends on view angle and sea state, and the absorption of atmospheric constituents such as water vapor, aerosols, and subdivisible clouds affect transmittance.»
Postma described a black body warmed by a heat source and claimed that you can not make it warmer by
reflecting that
emitted radiation back.
If the surface is ALREADY
emitting radiation that is «hotter», i.e. more energetic then the «back
radiation» will in effect just be
reflected again.
Most of the
radiation measured as coming from the ocean surface is actually either been
reflected or is being
emitted by molecules evaporated from the ocean surface.
Persistent small climate changes are difficult to detect within the diurnal, regional, and seasonal variance of Earth's
reflected (shortwave) and
emitted (longwave) energy — hence a continuous long - term (decades) record of Earth's
radiation budget (ERB) is needed to identify subtle long - term shifts related to climate change.4 With the demanifesting of TSIS and ERBS from NPOESS, ERB measurements will end with the last CERES on Aqua (or perhaps NPP, pending addition of CERES FM - 5 onto NPP), the TIM record will end with Glory, and the SIM record with SORCE.
I would like to play around with energy balance numbers from OLR,
reflected solar, surface
emitted radiation and see whether global tau presents itself as a useful number in practice.
Your survival blanket
reflecting 90 % is not an issue, the notion an
emitting body will absorb 90 % of it's own
reflected radiation is ridiculous.
Both have 90 % of the
emitted radiation reflected back and then absorbed.