Troposphere

{
  "id": "MLC-T-ENV-028808",
  "term": "Troposphere",
  "field": "Environment",
  "definition": "1. The region of the atmosphere closest to the Earth. The troposphere extends from the surface up to about 10 km in altitude, although this height varies with latitude. Almost all weather takes place in the troposphere. Mt. Everest, the highest mountain on Earth, is only 8.8 km high. Temperatures decrease with altitude in the troposphere. As warm air rises, it cools, falling back to Earth. This process, known as convection, means there are huge air movements that mix the troposphere very efficiently.\n\n2. The layer of the atmosphere closest to the earth's surface.\n\n3. The lowest part of the atmosphere from the surface to about 10 km in altitude in mid-latitudes (ranging from 9 km in high latitudes to 16 km in the tropics on average) where clouds and \"weather\" phenomena occur. In the troposphere temperatures generally decrease with height. See ozone precursors, stratosphere, atmosphere.\n\n4. The lowest layer of the atmosphere and contains about 95 percent of the mass of air in the Earth's atmosphere. The troposphere extends from the Earth's surface up to about 10 to 15 kilometers. All weather processes take place in the troposphere. Ozone that is formed in the troposphere plays a significant role in both the greenhouse gas effect and urban smog. See ozone precursor, stratosphere, atmosphere.\n\n5. The region of the atmosphere closest to the Earth. The troposphere extends from the surface up to about 10 km (6 miles) in altitude, although this height varies with latitude. Almost all weather takes place in the troposphere. Mt. Everest, the highest mountain on Earth, is only 8.8 km (5.5 miles) high. Temperatures decrease with altitude in the troposphere. As warm air rises, it cools, falling back to Earth. This process, known as convection, means there are huge air movements that mix the troposphere very efficiently.\n\n6. The lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7-6.2 miles (6-10 km), which is the lower boundary of the stratosphere. Because more solar radiation hits the equator than the poles, the troposphere is tallest along the equator and gets shorter as one moves north or south.\n\n7. The layer of the atmosphere from the earth's surface up to the tropopause, characterized by decreasing temperature with height (except, perhaps, in thin layers - vertical wind motion, appreciable water vapor content, and sensible weather (clouds, rain, etc.)\n\n8. Known as the lower atmosphere almost all weather occurs in this region. The troposphere begins at the Earth's surface and extends from 4 to 12 miles (6 to 20 km) high. The height of the troposphere varies from the equator to the poles. At the equator it is around 11-12 miles (18-20 km) high, at 50°N and 50°S, 5½ miles and at the poles just under four miles high. As the density of the gases in this layer decrease with height, the air becomes thinner. Therefore, the temperature in the troposphere also decreases with height in response. As one climbs higher, the temperature drops from an average around 62°F (17°C) to -60°F (-51°C) at the tropopause.\n\n9. Troposphere stems from the Greek word tropos, which means turning or mixing. The troposphere is the lowest layer of the Earth's atmosphere, extending to a height of 8-15 km, depending on latitude. This region, constantly in motion, is the most dense layer of the atmosphere and the region that essentially contains all of Earth's weather. Molecules of nitrogen and oxygen compose the bulk of the troposphere.\n\n10. Region of the atmosphere closest to the Earth. The troposphere extends from the surface up to about 10 km (6 miles) in altitude, although this height varies with latitude. Almost all weather takes place in the troposphere. Mt. Everest, the highest mountain on Earth, is only 8.8 km (5.5 miles) high. Temperatures decrease with altitude in the troposphere. As warm air rises, it cools, falling back to Earth. This process, known as convection, means there are huge air movements that mix the troposphere very efficiently.\n\n11. Lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7-6.2 miles (6-10 km), which is the lower boundary of the stratosphere. Because more solar radiation hits the equator than the poles, the troposphere is tallest along the equator and gets shorter as one moves north or south.\n\n12. Layer of the atmosphere closest to the Earth’s surface. The troposphere extends from the surface up to about 6 to 9 miles.\n\n13. The lowest part of the atmosphere from the surface to about 10 km in altitude in mid-latitudes (ranging from 9 km in high latitudes to 16 km in the tropics on average) where clouds and \"weather\" phenomena occur. In the troposphere temperatures generally decrease with height.\n\n14. The layer of the atmosphere closest to the Earth’s surface. The troposphere extends from the surface up to about 6 to 9 miles.\n\n15. Begins at the Earth's surface and extends from 4 to 12 miles (6 to 20 km) high [Original source: https://www.weather.gov/jetstream/layers].",
  "subject": "Air",
  "references": [
    "SunWise Program Glossary",
    "Terms of Environment",
    "Glossary of Climate Change Terms",
    "Greenhouse Gas Emissions",
    "Ozone Layer Protection Glossary",
    "CMAQ Glossary",
    "NOAA National Weather Service Glossary",
    "NOAA National Weather Service JetStream - Online School for Weather at http://http://www.srh.noaa.gov/jetstream/index.htm",
    "NASA Earth Observatory Glossary",
    "Community Multiscale Air Quality (CMAQ) Glossary",
    "Report on the Environment (ROE) Glossary",
    "Federal LCA Commons Elementary Flow List for Life Cycle Assessment"
  ],
  "url": "https://mlchart.com/terminology/environment/troposphere/"
}