Search results
Results From The WOW.Com Content Network
In June to August, photochemical ozone production causes very high concentrations over the East Coast of the US and China. Ground-level ozone ( O 3 ), also known as surface-level ozone and tropospheric ozone , is a trace gas in the troposphere (the lowest level of the Earth's atmosphere ), with an average concentration of 20–30 parts per ...
Levels of ozone at various altitudes and absorption of different bands of ultraviolet radiation: In essence, all UVC is absorbed by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer also absorbs most UVB. In contrast, UVA is hardly absorbed and most of it reaches the ground.
The highest levels of ozone in the atmosphere are in the stratosphere, in a region also known as the ozone layer between about 10 and 50 km above the surface (or between about 6 and 31 miles). However, even in this "layer", the ozone concentrations are only two to eight parts per million, so most of the oxygen there is dioxygen, O 2 , at about ...
The weather service and state DEM provide some tips on avoiding health problems due to heat and bad air.
Air pollution can cause diseases, allergies, and even death; it can also cause harm to animals and crops and damage the natural environment (for example, climate change, ozone depletion or habitat degradation) or built environment (for example, acid rain). [3] Air pollution can occur naturally or be caused by human activities. [4]
It can cause eye and nose irritation and it dries out the protective membranes of the nose and throat and interferes with the body's ability to fight infection, increasing susceptibility to illness. [32] Hospital admissions and respiratory deaths often increase during periods when ozone levels are high. [33] [34]
When Indonesia’s Mount Tambora erupted in 1815, it ejected so much dust and sulfur dioxide so high it reached the stratosphere, cooling global temperatures that year by as much as 2 degrees ...
Ozone cycle illustrated over image by NASA astronaut Scott Kelly. Ozone is a ubiquitous yet highly reactive molecule in the atmosphere. Such a highly reactive oxidizer would normally be dangerous to life but ozone's concentration at sea level is usually not high enough to be toxic.