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  1. en.wikipedia.org › wiki › TaiwanTaiwan - Wikipedia

    Taiwan,[II][k] officially the Republic of China (ROC),[I][l] is a country[27] in East Asia.[o] It is located at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. The territories controlled by the ...

  2. Climate change threatens people with increased flooding, extreme heat, increased and scarcity, more disease, and economic loss. Human migration and conflict can also be a result. [11] The World Health Organization (WHO) calls climate change the greatest threat to global health in the 21st century. [12]

  3. en.wikipedia.org › wiki › ChinaChina - Wikipedia

    China (Chinese: 中国; pinyin: Zhōngguó), officially the People's Republic of China (PRC),[i] is a country in East Asia. With a population exceeding 1.4 billion, it is the world's second-most-populous country. China spans the equivalent of five time zones and borders fourteen countries by land.[j] With an area of nearly 9.6 million square ...

  4. en.wikipedia.org › wiki › Dew_pointDew point - Wikipedia

    • Humidity
    • Relationship to Human Comfort
    • Dew Point Weather Records
    • Measurement
    • Calculating The Dew Point
    • Frost Point
    • See Also

    If all the other factors influencing humidity remain constant, at ground level the relative humidity rises as the temperature falls; this is because less vapor is needed to saturate the air. In normal conditions, the dew point temperature will not be greater than the air temperature, since relative humidity typicallydoes not exceed 100%. In technic...

    When the air temperature is high, the human body uses the evaporation of perspiration to cool down, with the cooling effect directly related to how fast the perspiration evaporates. The rate at which perspiration can evaporate depends on how much moisture is in the air and how much moisture the air can hold. If the air is already saturated with moi...

    Highest dew point temperature: A dew point of 35 °C (95 °F) — while the temperature was 42 °C (108 °F) — was observed at Dhahran, Saudi Arabia, at 3:00 p.m. on 8 July 2003.

    Devices called hygrometersare used to measure dew point over a wide range of temperatures. These devices consist of a polished metal mirror which is cooled as air is passed over it. The dew point is revealed by observing the loss of clarity in the reflection cast by the mirror. Manual devices of this sort can be used to calibrate other types of hum...

    A well-known approximation used to calculate the dew point, Td, given just the actual ("dry bulb") air temperature, T (in degrees Celsius) and relative humidity (in percent), RH, is the Magnus formula:[clarification needed] For greater accuracy, Ps(T) (and therefore γ(T, RH)) can be enhanced, using part of the Bögel modification, also known as the ...

    The frost point is similar to the dew point in that it is the temperature to which a given parcel of humid air must be cooled, at constant atmospheric pressure, for water vapor to be deposited on a surface as ice crystals without undergoing the liquid phase (compare with sublimation). The frost point for a given parcel of air is always higher than ...

  5. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars, [1] 760 mm Hg, 29.9212 inches Hg, or 14.696 psi. [2] The atm unit is roughly equivalent to the mean sea-level atmospheric pressure on Earth; that is, the Earth's atmospheric pressure at sea level is ...

  6. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological agents ...

  7. en.wikipedia.org › wiki › BeijingBeijing - Wikipedia

    Beijing (/ b eɪ ˈ dʒ ɪ ŋ / bay-JING, Chinese: 北京; pinyin: Běijīng; Mandarin pronunciation: [pe ɪ.tɕi ŋ] ), alternatively romanized as Peking (/ p iː ˈ k ɪ ŋ / pee-KING), is the capital of the People's Republic of China.With about 22 million residents, Beijing is the world's most populous national capital city as well as China's second largest city after Shanghai.

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