from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having a wavelength of greater than 1000 meters.
  • adj. Capable of transmitting or receiving signals at such a wavelength.


Sorry, no etymologies found.


  • Clouds at lower altitudes let more of the earth's heat, or so-called longwave radiation, escape out to space. - latest science and technology news stories

  • Earth's albedo values are very important in shaping local and global climates through the radiation budget, determined as the difference between the amount of absorbed shortwave radiation (input) and the outgoing longwave radiation (output).


  • Of particular interest is “Increases in greenhouse forcing inferred from the outgoing longwave radiation spectra of the Earth in 1970 and 1997,” (Griggs and Harries, 2001):

    Giving evidence to the Chilcot inquiry, Tony Blair said: “I...

  • This increased greenhouse-effect has been measured from space, in terms of decreasing outgoing longwave radiation, and from earth, in terms of increasing downward longwave radiation (that's radiation from the atmosphere, not the sun).

    Giving evidence to the Chilcot inquiry, Tony Blair said: “I...

  • However, high, wispy cirrus clouds, that can have relatively large droplets, do not reflect solar light very effectively, but will almost completely reflect longwave infrared radiation.


  • Sunlight comes in as shortwave radiation and when it hits the earth surface or a nice reflective roof it is reflected as longwave radiation.

    Save the Planet with a White Roof | Lifehacker Australia

  • Part Six - Visualization which showed the Evans and Puckrin result of downward longwave radiation.

    When you're in a hole stop digging

  • Also, geothermal radiation would not heat the atmosphere much, because (1) it's a tiny proportion of the longwave radiation emitted by the Earth, most of which is due to sunlight heating, and (2) all of the greenhouse gases I can think of are solid at these temperatures.

    mikandra: from the realms of the impossible

  • I may be the only other person you have met who can visualize a DX-pedition to long wire Chinese longwave stations while sipping Lowlands whisky and, even so, that still kinda creeps me out.

    oh yeah, and i like cheese

  • The global reception of solar insolation and loss of longwave radiation cause a temperature gradient of hotter air at the equator and colder air at the poles.

    Global-scale circulation of the atmosphere


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