No volcanic carbon dioxide emission of comparable scale has occurred since. FTIR is a method of measuring infrared absorption and emission spectra. Excitation can also be achieved at energies below that of zero phonon emission. The acceleration of the electron results in the emission of Bremsstrahlung radiation. It also responsible for significant greenhouse gas emission. This is caused by the emission of sulphurous gases. He called for a reduction in Greenhouse gas emission and massive installation of renewable energy. This process is known as secondary electron emission. Rubidium-82 is used for positron emission tomography. This emissivity depends on factors such as temperature, emission angle, and wavelength. Diesel particulate matter is highest near the source of emission. The Protocol establishes a structure of rolling emission reduction commitment periods. Shell joined the Global Climate Coalition of businesses opposed to greenhouse gas emission regulation. It is used in positron emission tomography. C is one of the isotopes often used in positron emission tomography.