- 업종: Weather
- Number of terms: 60695
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The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
The idealized height distribution of ionization as a function of height produced solely by absorption of solar radiation. Named for Sydney Chapman, who first derived the shape of such a layer mathematically. Some of the basic assumptions used to develop the equation were that the ionizing radiation from the sun is essentially monochromatic, that the ionized constituent is distributed exponentially (i.e., with a constant scale height), and that there is an equilibrium between the creation of free electrons and their loss by recombination.
Industry:Weather
The idealized height distribution of ionization as a function of height produced solely by absorption of solar radiation. Named for Sydney Chapman, who first derived the shape of such a layer mathematically. Some of the basic assumptions used to develop the equation were that the ionizing radiation from the sun is essentially monochromatic, that the ionized constituent is distributed exponentially (i.e., with a constant scale height), and that there is an equilibrium between the creation of free electrons and their loss by recombination.
Industry:Weather
A type of cloud-height indicator that uses a searchlight to project vertically a narrow beam of light onto a cloud base. The height of the cloud base is determined by using a clinometer, located at a known distance from the ceiling light, to measure the angle included by the illuminated spot on the cloud, the observer, and the ceiling light. Compare ceilometer.
Industry:Weather
A type of cloud-height indicator that uses a searchlight to project vertically a narrow beam of light onto a cloud base. The height of the cloud base is determined by using a clinometer, located at a known distance from the ceiling light, to measure the angle included by the illuminated spot on the cloud, the observer, and the ceiling light. Compare ceilometer.
Industry:Weather
The potential, expressed in units of water head, due to the capillarity of a porous medium in the presence of a wetted liquid.
Industry:Weather
The potential, expressed in units of water head, due to the capillarity of a porous medium in the presence of a wetted liquid.
Industry:Weather
The movement of fluids in unsaturated porous media due to surface tension and adhesive driving forces (capillarity).
Industry:Weather
The movement of fluids in unsaturated porous media due to surface tension and adhesive driving forces (capillarity).
Industry:Weather
