Search results
Results From The WOW.Com Content Network
With ozone concentrations in the order of 10 −6-10 −5 relative to molecular oxygen, ozone photodissociation becomes the dominant photodissociation reaction, and most of the stratosphere heat is generated through this procsees, with highest heat generation rate per molecule at the upper limit of the stratosphere (stratopause), where ozone ...
The oxygen atom product combines with atmospheric molecular oxygen to reform O 3, releasing heat. The rapid photolysis and reformation of ozone heat the stratosphere, resulting in a temperature inversion. This increase of temperature with altitude is characteristic of the stratosphere; its resistance to vertical mixing means that it is stratified.
Ozone in the stratosphere is mostly produced from short-wave ultraviolet rays between 240 and 160 nm. Oxygen starts to absorb weakly at 240 nm in the Herzberg bands, but most of the oxygen is dissociated by absorption in the strong Schumann–Runge bands between 200 and 160 nm where ozone does not absorb. While shorter wavelength light ...
The hydrogen can then escape from the atmosphere while the oxygen recombines or bonds to iron on the planet's surface. [2] The deficit of water on Venus due to the runaway greenhouse effect is thought to explain why Venus does not exhibit surface features consistent with plate tectonics, [25] meaning it would be a stagnant lid planet. [26]
Radiation heat flow is the net energy flow after the flows of radiation in both directions have been taken into account. [74] Radiation heat flow occurs in the direction from the surface to the atmosphere and space, [6] as is to be expected given that the surface is warmer than the atmosphere
The geothermal heat flow from the Earth's interior is estimated to be 47 terawatts (TW) [12] and split approximately equally between radiogenic heat and heat left over from the Earth's formation. This corresponds to an average flux of 0.087 W/m 2 and represents only 0.027% of Earth's total energy budget at the surface, being dwarfed by the 173 ...
The ozone layer visible from space at Earth's horizon as a blue band of afterglow within the bottom of the large bright blue band that is the stratosphere, with a silhouette of a cumulonimbus in the orange afterglow of the troposphere. The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet ...
At some wavelengths, greenhouse gases absorb 100% of the longwave radiation emitted by the surface. [16] So, at those wavelengths, the emissivity of the atmosphere is 1 and the atmosphere emits thermal radiation much like an ideal blackbody would. However, this applies only at wavelengths where the atmosphere fully absorbs longwave radiation.