Tropospheric Chemistry: Instruments

mACES (miniature Airborne Cavity Enhanced Spectrometer)

mACES rendering
mACES instrument design

mACES is under development.

Principle of the Measurement

Cavity enhanced spectroscopy uses two mirrors to create an optical path of several tens of kilometers within a 50 cm measurement cell, making the instrument very sensitive to absorption by trace gases.

Species Measured

nitrogen dioxide (NO2)

Time Response / Detection Limit



Carrie Womack, Rebecca Washenfelder, Mike Robinson, Steve Brown