Carbon dioxide (CO2) concentrations and air-sea fluxes in a Red Sea seagrass meadow, coastal lagoon mudflat and reef lagoon

The data are the carbon dioxide (CO2) concentrations and partial pressures measured in a Red Sea coastal lagoon seagrass bed and adjacent mudflat, and in a coral reef lagoon. Gases were measured with underwater and autonomous sensors with a frequency of 1 measurement per minute for durations of 8 to 20 days between December 2021 and December 2022. The associated data on salinity, temperature, pressure and O2 concentration interpolated to 1 min interval can be found in doi:10.1594/PANGAEA.948547. The air-sea fluxes of CO2 (FCO2) are given in mmol m-2 min-1, and calculated using the equation k600(CO2)= -0.08+ 0.26v + 0.83u 0.59h from Rosentreter et al., 2017

Methane (CH4) concentrations and air-sea fluxes in a Red Sea seagrass meadow, coastal lagoon mudflat and reef lagoon

The data are the methane (CH4) concentrations and partial pressures measured in a Red Sea coastal lagoon seagrass bed and adjacent mudflat, and in a coral reef lagoon. Gases were measured with underwater and autonomous sensors with a frequency of 1 measurement per minute for durations of 8 to 20 days between December 2021 and December 2022. The data also show the salinity, temperature, pressure and O2 concentration interpolated to 1 min interval. The air-sea fluxes of CH4 (FCH4) are given in nmol m-2 min-1, and calculated using the equation k600(CH4 )= -1.07 0.36v + 0.99u +0.87h from Rosentreter et al., 2017

Sediment to water column fluxes of dissolved inorganic carbon and total alkalinity in Red Sea mangroves

The data describes fluxes of dissolved inorganic carbon (DIC) and total alkalinity (TA) in mmol m⁻² h⁻¹ measured in a red sea mangrove and adjacent coral lagoon (negatives fluxes are uptake of TA or DIC by the sediment). The incubations were conducted in a mono-specific Avicennia marina mangrove forest of the central Red Sea (22° 20' 23" N, 39° 05' 22" E). The incubations were conducted during the last 2 hours of the rising tide, around solar noon and at night within the same day. The Incubations were conducted from April 2018 to May 2019. In April/May 2018, day and night incubations were done 15 days apart