Elsasser's radiation chart

Elsasser's radiation chart

[′el·zə·sərz rād·ē′ā·shən ‚chärt]
(meteorology)
A radiation chart developed by W. M. Elsasser for the graphical solution of the radiative transfer problems of importance in meteorology: given a radiosonde record of the vertical variation of temperature and water vapor content, one can find with this chart such quantities as the effective terrestrial radiation, net flux of infrared radiation at a cloud base or a cloud top, and radiative cooling rates.