Global data for SGD and CO2

This dataset is a global compilation of 40 coastal ecosystems across 14 countries. It consists of continuous time series for carbon dioxide and radon. Other parameters included are latitude, longitude, depth, temperature, salinity, dissolved oxygen, and water-air flux for carbon dioxide. Timestamps of each measurement correspond to the local time zone. Carbon dioxide and radon were measured using Licor and RAD7, respectively. Depth, temperature, salinity, and dissolved oxygen were measured using probes. This dataset was used to interpret the impact of SGD on CO2 dynamics in globally distributed coastal ecosystems. 

Data sources are mentioned in the sheet References. 

Column names in the "Master File" sheet: 

• Location: Name of the location of measurement
• Location ID: ID of the location 
• Country: Country of location 
• Ecosystem Type: categorical ecosystem type 
• Latitude: Latitudinal coordinate of the location (DD)
• Longitude: Longitudinal coordinate of the location (DD)
• Date (DD/MM/YYYY): Date when the measurement was taken (DD/MM/YYYY)
• Time (hh:mm): Local time of when the measurement was taken
• Time since start (Days): Duration of the continuous measurement since the first measurement was started (days)
• Wind Speed (m/s): Wind speed at the location at the time of measurement
• Depth (m): Depth at which the measurement was taken (m)
• Temperature (°C): Temperature at the point of radon/carbon dioxide measurement
• Salinity: Salinity of water at the point of radon/carbon dioxide measurement
• DO (%): Dissolved oxygen in the water at the point where radon measurement was taken (%)
• Radon (dpm/L): Radon measurement in water (dpm/L). Measured using Durridge RAD7 
• CO2 (µatm) at sst: measurement of Carbon Dioxide dissolved in water at sea surface temperature (µatm). Measured using LiCor.  
• Water-air CO2 flux (mmol m-2 day-1): Calculated water-air flux of carbon dioxide.