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Hace 4 días · Atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice-covered surface of a planet outward into space. The density of the atmosphere decreases outward, because the planet’s gravitational attraction, which pulls the gases and aerosols inward, is greatest close to the surface.
- Roger A. Pielke
Hace 2 días · The increase in atmospheric concentrations of CO 2 causes a range of further effects of climate change on the environment and human living conditions. The present atmospheric concentration of CO 2 is the highest for 14 million years.
Hace 5 días · temperature, measure of hotness or coldness expressed in terms of any of several arbitrary scales and indicating the direction in which heat energy will spontaneously flow—i.e., from a hotter body (one at a higher temperature) to a colder body (one at a lower temperature).
- The Editors of Encyclopaedia Britannica
- Temperature is the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius. Temperature indica...
- On average, the time of day when air temperature is the highest is usually about 3 PM, as heat continues to build up after noon. However, after 3 P...
- During the night there is no direct sunlight, so there is more solar energy being lost than absorbed, causing air temperature during the night to b...
- Temperature decreases at higher altitudes because there is less air exerting pressure than at sea level. According to Gay-Lussac’s law, pressure an...
- Temperature inversions occur when the normal heat gradient of the atmosphere—air is warmer near the ground and cooler in the sky—is reversed. A tem...
Hace 5 días · NASA Ozone Watch: Latest status of ozone. View the latest status of the ozone layer over the Antarctic, with a focus on the ozone hole. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone.
Hace 4 días · Weather, as most commonly defined, occurs in the troposphere, the lowest region of the atmosphere that extends from the Earth’s surface to 6–8 km (4–5 miles) at the poles and to about 17 km (11 miles) at the Equator. Weather is largely confined to the troposphere since this is where almost all clouds occur and almost all precipitation develops.
- The Editors of Encyclopaedia Britannica
Hace 3 días · This figure shows the atmospheric increase of CO 2 over 280 ppm in weekly averages of CO 2 observed at Mauna Loa. The value of 280 ppm is chosen as representative of pre-industrial air because it is close to the average of CO 2 measured and dated with high time resolution between the years 1000 and 1800 in an ice core from Law Dome ...
Hace 2 días · Particulates or atmospheric particulate matter (see below for other names) are microscopic particles of solid or liquid matter suspended in the air. The term aerosol commonly refers to the particulate/air mixture, as opposed to the particulate matter alone. Sources of particulate matter can be natural or anthropogenic.
