Breakdown of pyrite and volcanic eruptions release sulfur into the atmosphere, which reacts with oxygen and hence reduces its amount in the atmosphere. The large-scale structure of the atmospheric circulation varies from year to year, but the basic structure remains fairly constant because it is determined by Earth's rotation rate and the difference in solar radiation between the equator and poles. This includes the tape, airbags, bubblewrap and biofill (commonly known to as loosefill, international only), and of course the boxes and catalogues themselves. However, the temperature has a more complicated profile with altitude, and may remain relatively constant or even increase with altitude in some regions (see the temperature section, below). The atoms and molecules are so far apart that they can travel hundreds of kilometres without colliding with one another.

There were probably simple hydrides such as those now found in the gas giants ( Jupiter and Saturn), notably water vapor, methane and ammonia. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Various industrial pollutants also may be present as gases or aerosols, such as chlorine (elemental or in compounds), fluorine compounds and elemental mercury vapor.This time, even greater emphasis is placed on verbal context for each image, with a predominantly social commentary which acts as a moral tax on the visual delights.

Blue light is scattered more than other wavelengths by the gases in the atmosphere, surrounding Earth in a visibly blue layer at the stratosphere, above the clouds of the troposphere, when seen from space on board the ISS at an altitude of 335 km (208 mi) (the Moon is visible as a crescent in the far background). This daybook presents 365 entirely new, utterly dazzling images from master aerial photographer Yann Arthus-Bertrand. From the bottom, afterglow illuminates the troposphere in orange with silhouettes of clouds, and the stratosphere in white and blue.It extends from the mesopause (which separates it from the mesosphere) at an altitude of about 80 km (50 mi; 260,000 ft) up to the thermopause at an altitude range of 500–1000 km (310–620 mi; 1,600,000–3,300,000 ft). It contains the ozone layer, which is the part of Earth's atmosphere that contains relatively high concentrations of that gas.