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An atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam' and σφαῖρα (sphaîra) 'sphere') [1] is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.
The exosphere is the outermost layer of Earth's atmosphere (though it is so tenuous that some scientists consider it to be part of interplanetary space rather than part of the atmosphere). It extends from the thermopause (also known as the "exobase") at the top of the thermosphere to a poorly defined boundary with the solar wind and ...
[1]: 27 Because all of Vietnam lies between the southern and northern limit of the polar front, Vietnam's climate are both influenced by polar air and tropical air (from the tropical convergent zone). [1]: 27 In Vietnam, the monsoon circulation is a combination of both the South Asian and Northeast Asian monsoon systems.
Atmospheric particulate matter, also known as particulate matter, or PM, describes solids and/or liquid particles suspended in a gas, most commonly the Earth's atmosphere. [1] Particles in the atmosphere can be divided into two types, depending on the way they are emitted. Primary particles, such as mineral dust, are emitted into the atmosphere ...
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
Atmospheric chemistry is a branch of atmospheric science that studies the chemistry of the Earth's atmosphere and that of other planets. This multidisciplinary approach of research draws on environmental chemistry, physics, meteorology, computer modeling, oceanography, geology and volcanology, climatology and other disciplines to understand both natural and human-induced changes in atmospheric ...
[4] [5] Tipping behavior is found across the climate system, for example in ice sheets, mountain glaciers, circulation patterns in the ocean, in ecosystems, and the atmosphere. [5] Examples of tipping points include thawing permafrost , which will release methane , a powerful greenhouse gas , or melting ice sheets and glaciers reducing Earth's ...
Socialist Republic of Vietnam Cộng hòa Xã hội chủ nghĩa Việt Nam (Vietnamese) Flag Emblem Motto: Độc lập – Tự do – Hạnh phúc "Independence – Freedom – Happiness" Anthem: Tiến Quân Ca "The Song of the Marching Troops" Show globe Show map of ASEAN Location of Vietnam (green) in ASEAN (dark grey) Capital Hanoi 21°2′N 105°51′E / 21.033°N 105.850°E ...