Chemical Ionization Mass Spectrometric Measurements of Atmospheric Trace Gases

Chemical Ionization Mass Spectrometry (CIMS) is a versatile, fast and sensitive method for the detection of atmospheric trace gases, which play key roles in atmospheric chemistry and climate. A combination of different types of mass spectrometers, ion sources and inlet configurations are deployed by IPA. Sophisticated calibration techniques and in-flight calibration systems are developed to ensure high data quality. The CIMS instruments are employed preferably on research aircraft; in addition, observations are performed on ships, ground based sites and in laboratory scenarios including atmospheric chambers.