Sentences with phrase «solar ultraviolet radiation»

Low solar activity sees the atmosphere above the South Pole cool both directly with less solar radiant energy and as reduced ozone warming by solar ultraviolet radiation.

SAM is influenced by the warming and cooling of ozone layers as solar ultraviolet radiation waxes and wanes (Petrick et al 2012).

ABSTRACT Large changes in solar ultraviolet radiation can indirectly affect climate by inducing atmospheric changes.

The SAG on ozone and solar ultraviolet radiation establish data quality objectives and standard operating procedures outlining measurement methods and procedures.251

WOUDC receives guidance from the WMO SAG for issues related to both ozone and solar ultraviolet radiation data.

On the other hand both records have shown dramatic cooling in the stratosphere, where cooling is indeed expected due to increasing greenhouse gases and decreasing ozone (which heats the stratosphere due to its absorption of solar ultraviolet radiation).

Under ultraviolet light examination, transient dark and bright stripes mark Venus» atmosphere, indicating regions where Solar ultraviolet radiation is either absorbed or reflected, respectively (more from Venus Express and APOD).

The most important ionizing source is photoionization by solar ultraviolet radiation, which is produced in the outer layers of the solar atmosphere (i.e, the solar corona).

At altitudes of 60 kilometers and higher above the Martian surface, solar ultraviolet radiation splits methane molecules apart.

On Titan, where solar ultraviolet radiation is much weaker and oxygen - bearing molecules are substantially less abundant, methane can last 10 million to 100 million years (which is still a short time in geologic terms).

When Voyager 1 passed Titan in 1980, it couldn't see the surface of Saturn's largest moon: solar ultraviolet radiation drives reactions between nitrogen and methane molecules in its atmosphere that yield a thick, orange - brown gunk.

However, Sagan and Christopher Chyba believe organic compounds, formed at high altitudes by the action of solar ultraviolet radiation on methane and ammonia can provide an ultraviolet «shield» to protect the methane and ammonia in the lower atmosphere.

Others have objected that solar ultraviolet radiation would quickly break up any ammonia in the atmosphere.

Not exact matches

Producing artificial aurorae has taught scientists unexpected lessons about how gases are ionized in the ionosphere, a process that helps protect Earth from harmful ultraviolet solar radiation.

In his research, Robin Ramstad has combined and compared measurements of the ion escape under varying solar wind conditions and levels of ionizing solar radiation, so - called extreme ultraviolet (EUV) radiation.

So when the solar system is traveling through that part of the galaxy, about every 62 million years, more cosmic rays hit Earth, causing direct radiation, increased ultraviolet rays and perhaps altered weather patterns.

Boss and his colleagues have hypothesized that solar ultraviolet (UV) radiation could account for the stunted core, if gravitational instability is at play.

As our solar system slowly orbits around the galactic center, the sun's ultraviolet radiation carves out an egg - shaped region of ionized hydrogen atoms surrounded by neutral hydrogen gas.

By far the most rigorously researched of the Tintin stories, it features nuclear fission, the effects of gravitation in space and why meteorites make lunar craters, as well as side references in Professor Calculus's log book to the «constant of solar radiation» and the «limits of the solar spectrum in the ultraviolet».

Any organisms still living would have to survive the barrage of ultraviolet solar radiation.

In addition to the coronal heating mystery, IRIS will shed light on the processes that drive the solar wind, solar storms, ultraviolet radiation and other phenomena that can hinder electronic communications and negatively affect human health on Earth.

When we lost our fur, the sun's ultraviolet rays damaged our newly exposed skin, which reacted by producing melanin, a pigment that absorbs the sun's solar radiation, explain anthropologists at Penn State.

Although ultraviolet (UV) solar radiation contributes to the development of sun erythema, cancer and aging of the skin, it also reduces blood pressure, synthesises vitamin D and improves the treatment of several diseases.

Its Global Ultraviolet Imager will examine temperature changes in the region and a Solar Extreme Ultraviolet Experiment Sensor will record ultraviolet radiation entering Ultraviolet Imager will examine temperature changes in the region and a Solar Extreme Ultraviolet Experiment Sensor will record ultraviolet radiation entering Ultraviolet Experiment Sensor will record ultraviolet radiation entering ultraviolet radiation entering the region.

Any solar effect (either direct or indirect) which is correlated to solar activity (i.e. solar irradiance, solar magnetic field [and thus galactic cosmic rays], ultraviolet [UV] radiation, etc.) is accounted for in the linear regression.

Earth and the sun are deeply and intricately connected, not only by simple rays of light and heat, but also by a complex web of electricity, magnetism, solar wind and extreme ultraviolet radiation.

It has also been proposed that ultraviolet (UV) radiation, which varies more than other solar irradiance wavelengths, could amplify the solar influence on the global climate through interactions with the stratosphere and atmospheric ozone.

Early Earth lacked an ozone layer to act as a shield against high - energy solar radiation, but microbes flourished by adapting to or finding other forms of protection from the higher ultraviolet radiation levels.

According to http://folk.uio.no/jegill/papers/2002GL015646.pdf «A physical mechanism connecting solar irradiance and low clouds might contain the following components: (1) Over the solar cycle the flux of ultraviolet (UV) radiation varies by several %, and even more so in the short wavelength component of the UV.

Cooks In Clouds: GoSun's patented solar cooking technology absorbs a broad spectrum of radiation, including ultraviolet light, which can penetrate clouds when visible light can not.

However, it is also clear that since about 1980, while the total solar radiation, its ultraviolet component, and the cosmic ray intensity all exhibit the 11 - year solar periodicity, there has otherwise been no significant increase in their values.

Variation in the ultraviolet part of solar radiation modulates photochemistry in the stratosphere, and some products of the reactions can modulate cloud microphysics.

The cell also overcomes some of the major problems with current solar tech like wear out or damage from high heat that comes from the absorption of great amounts of ultraviolet and infrared radiation that can't actually be turned into electricity due to a narrow band gap (the wavelength of light that can effectively be used to generate electricity).

The solar erythemal ultraviolet (UV) radiation which is defined by the integral over the UV wavelengths of the irradiance multiplied by the erythemal action spectrum (refer to carcinogenesis effectiveness).

The ozone layer protects life on Earth from harmful ultraviolet solar radiation.

For the important ultraviolet photons which are desired to be removed from the solar radiation are those less energetic photons which decompose the ozone molecules to produce another oxygen atom which again can reform another ozone molecule.

According to their modeling studies, the difference in the amount of incoming solar radiation, in this case, primarily in the ultraviolet (UV) wavelengths, during the minima and maxima of the 11 - yr solar cycle are large enough to produce a characteristic change in the winter circulation pattern of the atmosphere over North America... When the NAO is in its negative phase, more cold air can seep south from the Arctic and impact the lower latitudes of Europe and the eastern U.S., which helps spin up winter storm systems.

Absorption of solar radiation by ozone shields the terrestrial surface from harmful ultraviolet light and warms the stratosphere, producing maximum temperatures of − 15 to 10 °C (5 to 50 °F) at an altitude of 50 km (30 miles).

Solar energy enters our atmosphere as shortwave radiation in the form of ultraviolet (UV) rays (the ones that give us sunburn) and visible light.

Radiation Amplification Factor (RAF); solar zenith angle (SZA); Dobson Unit (DU); ultraviolet (UV); ultraviolet radiation (UVR); cloudiness

The atmosphere plays an important role in the protection of life on Earth; it absorbs ultraviolet solar radiation and reduces temperature extremes between day and night.

The pattern of temperature increase with height in the stratosphere is the result of solar heating as ultraviolet radiation in the wavelength range of 0.200 to 0.242 micrometre dissociates diatomic oxygen (O2).

Section 1 contains five subsections with results on 27 - day response of low - latitude ionosphere to solar extreme - ultraviolet (EUV) radiation, response to the recurrent geomagnetic storms, long - term trends in the upper atmosphere, latitudinal dependence of total electron content on EUV changes, and statistical analysis of ionospheric behavior during prolonged period of solar activity.

Ultimately sea surface temperature depends upon the Quasi Biennial Oscillation in ultraviolet radiation and the solar wind.

The sun's solar rays are in the form of ultraviolet radiation which due to it's intensity and frequency has the ability to penetrate the more dense greenhouse gases such as CO2 and methane.

These explanations may have to be revisited, but the correlations may still be valid, e.g., if it transpires that solar variability influences the formation of the heavy phase, or if the changes in incoming ultraviolet radiation are redistributed throughout the atmosphere, after absorption in the stratosphere.

Any solar effect (either direct or indirect) which is correlated to solar activity (i.e. solar irradiance, solar magnetic field [and thus galactic cosmic rays], ultraviolet [UV] radiation, etc.) is accounted for in the linear regression.

Ozone absorbs incoming solar ultraviolet, leading to heating, which is balanced by thermal radiation from the greenhouse gases in the stratosphere.

The soot would absorb enough solar radiation to heat surrounding gases, setting in motion a series of chemical reactions that would break down the stratospheric ozone layer protecting Earth from harmful ultraviolet radiation, said Mills.

The soot would absorb enough solar radiation to heat surrounding gases, setting in motion a series of chemical reactions that would break down the stratospheric ozone layer protecting Earth from harmful ultraviolet radiation.»