Warming increases mangrove methane emissions but minimizes methane offsets to carbon sequestration

Time series observations of surface water CH4 and 222Rn were conducted at two sites (freshwater- and seawater-dominated) during a spring-neap tidal cycle using a Picarro G2201-i analyzer and a RAD7 detector, respectively, with ancillary parameters like salinity, temperature, and wind speeds measured by calibrated sensors and a weather station. CH4 and 222Rn concentrations were logged at one-second and 10-minute intervals, respectively, and all data were integrated over 10-minute periods.