Sentences with phrase «variable emission flux»
Starting in the 1960's at the Mt. Wilson Observatory O.C. Wilson (sic) began a long - term study of magnetic cycles in cool stars using as his observational indicator the variable emission flux of the H and K resonance lines of ionized calcium whose appearance in emission is characteristic of stellar chromospheres.
http://www.stsci.edu/ Not exact matches
The flux estimates presented in previous sections use available estimates from every reservoir where GHG emissions have been reported (and mean estimates from reservoirs where multiple studies or years of data have been collected), but it is important to note that the spatial and temporal coverage of these emission estimates are highly variable.
At the characteristic - emission level, ZC, the variable altitude at which incoming and outgoing radiative fluxes balance, TC ≈ 254 ° K, so that κC ≈ 0.269 ° K W — 1 m2.