We propose a technique for ecological monitoring of the atmospheric emissions from nuclear plants by detecting emission of the atomic hydrogen at 1420 MHz frequency (21.1 cm wavelength). Atomic hydrogen is the product of interaction between radioactive elements and atmospheric gases and particularly , with the water vapor. We estimate the amplitude of the signal due to atomic hydrogen radiation as well as the influence of the atmosphere on the emission plume dispersal and on the volume concentration of hydrogen atoms. The relationships have been derived allowing determination of optimum geometric conditions for detecting radiation under different meteorological conditions.