Greenhouse gases in the atmosphere (such
as water vapor and carbon dioxide
) absorb most of the Earth’s emitted longwave infrared radiation, which heats the lower atmosphere.
What gas absorbs long waves?
Each greenhouse gas and water vapor absorbs radiation from different areas of the electromagnetic spectrum.
Carbon dioxide and water
absorb long wave radiation from 12 to 19 microns. Methane absorbs wavelengths 6 to 8 microns. Water blocks radiation below 7 microns from being reflected out to space.
What emits the most longwave radiation?
Earth
emits longwave radiation because Earth is cooler than the sun and has less energy available to give off.
Which 2 gases can absorb heat?
Carbon dioxide, methane, nitrous oxide, chlorofluorocarbons
, and certain other gases absorb IR radiation from the Earth’s surface and re-emit it in all directions. These gases act like the glass in a greenhouse to increase the temperature of the planet.
Which of the following gases absorb outgoing longwave radiation?
11. Which of the following gases absorb outgoing long-wave radiation? Explanation:
Water vapour, carbon dioxide and ozone
absorb the outgoing long-wave radiation.
Which gas is most effective in absorbing incoming harmful?
The atoms and molecules that make up the atmosphere absorb the different types of radiation (visible, ultraviolet, and infrared) to varying degrees (see Figure 4).
Oxygen, in the form of O
2
(diatomic oxygen)
and O
3
(triatomic oxygen, ozone), is the most important absorber of incoming radiation in the atmosphere.
What food has the largest carbon footprint?
Meat, cheese and eggs
have the highest carbon footprint. Fruit, vegetables, beans and nuts have much lower carbon footprints.
Why does longwave radiation increase at night?
Longwave radiation increases
when water vapor condenses into droplets that radiate continuously over the whole longwave spectral range
, including the 8-12 μm window in which water vapor does not radiate.
What has the greatest albedo on Earth?
Snow and ice
have the highest albedos of any parts of Earth’s surface: Some parts of Antarctica reflect up to 90% of incoming solar radiation.
What is the ideal radiation budget?
Of the ~340 W/m
2
of solar radiation received by the Earth, an average of ~77 W/m
2
is reflected back to space by clouds and the atmosphere and ~23 W/m
2
is reflected by the surface albedo, leaving
~240 W/m
2
of solar energy input to the Earth’s energy budget. This amount is called the absorbed solar radiation (ASR).
Does gasoline absorb heat?
Eventually, the vibrating molecules release the radiation, which will likely be absorbed by another greenhouse gas molecule. This process keeps heat near the Earth’s surface. Most of the gas in the atmosphere is nitrogen and oxygen, which cannot absorb heat and contribute to the greenhouse effect.
Which material absorbs heat most efficiently?
Known (sensibly enough) “sensible heat materials,” substances like
stone, cast iron, and aluminum
get noticeably hotter as they absorb heat.
Are oceans heat sinks?
Oceans act as a heat sink
, as they react slower and with less a temperature change than land masses do. The temperature distribution of the waters on Earth is efficiently monitored from space by remote sensing Earth observation satellites.
Which gas blocks the most outgoing longwave radiation?
Greenhouse gases
in the atmosphere (such as water vapor and carbon dioxide) absorb most of the Earth’s emitted longwave infrared radiation, which heats the lower atmosphere.
What is another name for longwave radiation?
Outgoing Long-wave Radiation (OLR) is electromagnetic radiation of wavelengths from 3–100 μm emitted from Earth and its atmosphere out to space in the form of thermal radiation. It is also referred to as
up-welling long-wave radiation and terrestrial long-wave flux
, among others.
What are the two basic ways to measure solar radiation?
What are the two basic ways to measure solar radiation? Explanation: Thee two basic ways to measure solar radiation are via
ground-based instruments and satellite measurements
. Anemometer is an instrument used to measure wind speed.
