In 2018, working with our partners at the University of Edinburgh, we deployed a mini-LHR at The Royal Observatory in Edinburgh, Scotland where we plan to make continuous column CH4 and CO2 measurements. Links to the Royal Observatory and Paul Palmer’s research group can be found at: https://www.roe.ac.uk/, http://www.palmergroup.org/paul-palmer. Instruments Miniaturized Laser Heterodyne Radiometer (Mini-LHR) Ground Instrument