Atmosphere Chemistry and Climate Change Network (AC3) EPA Funded STATION CODE: MHD STATION NAME: Mace Head OBSERVATION CATEGORY: Air sampling observation at a Stationary platform COUNTRY/TERRITORY: Ireland Measurement Height: 24.0 m agl ALTITUDE: 5 m asl LATITUDE: 53.3261 N LONGITUDE: -9.9036 E SITE TYPE: rural background INSTRUMENTATION: PICARRO G1301 DATA RANGE: CH4 MEASUREMENT SCALE: WMO X2004A COVERING PERIOD: 2019-01-01 00:00 2019-09-03 00:00 TIME INTERVAL: hourly MEASUREMENT UNIT: nmol.mol-ยน MEASUREMENT METHOD: Cavity RingDown Spectrometer (ICOS instrument Id 41) DATA PRODUCT TYPE: L1 SAMPLING TYPE: continuous DATA POLICY: ICOS DATA is licensed under a Creative Commons Attribution 4.0 international licence (http://creativecommons.org/licenses/by/4.0/.The ICOS data licence is described at https://data.icos-cp.eu/licence)