Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions
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Datasets used in the publication "<strong>Global carbon dioxide efflux from rivers enhanced by high nocturnal emissions", </strong>published in <em>Nature Geoscience (</em>https://www.nature.com/articles/s41561-021-00722-3<em>)</em>. It consists of three files: <br> -"all_hourly_flux": file with all data for all sites at hourly resolution<br> -"all_daily_flux.csv" : file with summarised values for all sites at daily resolution<br> -"all_site_metadata.csv" : file with metadata for each site. Author of the repository: Gerard Rocher-Ros.<br> Contact: g.rocher.ros@gmail.com ######<br> Units for the file: "all_hourly_flux"<br> code;label;units<br> site;Stream Id;none<br> datetime; time stamp; "YYYY-MM-DD HH:MM:SS"<br> co2; partial pressure of co2 in water; ppm<br> kgas; gas transfer velocity of co2; m d-1<br> q; discharge; L s-1<br> flux.mol.m2.h; flux of co2 to (+) or from (-) the atmosphere; mol C m-2 h-1 <br> ######<br> Units for the file: "all_site_metadata"<br> code;label;units<br> site;Stream Id;none<br> lat;Latitude;degrees<br> long;Longitude;degrees<br> elevation;Elevation;m<br> country;Country;none<br> biome;Biome;none<br> canopy;Riparian coverage ;Category<br> slope;Channel slope;m m-1<br> q;Discharge;L s-1<br> temp;Water temperature ;°C<br> doc;DOC;mg L-1<br> no3;NO3-;µg L-1<br> nh4;NH4+;µg L-1<br> ph;pH ;none<br> cond;Conductivity;µS cm-1<br> area;Area;km2<br> bare;Bare;%<br> grass;Grass;%<br> crops;Crops;%<br> forest;Forest;%<br> mat;Mean annual temperature (MAT);°C<br> map;Mean annual precipitation (MAP);mm <br> mar;Mean annual radiation (MAR);KJ m-2<br> tgpp;Total annual gross primary production (GPP);g C m-2<br> soc;Soil organic carbon content (SOC);g kg-1<br> pco2.day;pCO2 Day-time;<br> pco2.night;pCO2 Night-time;<br> pco2.diff.ppm;Absolute night-day difference pCO2;ppm<br> pco2.diff.per;Relative night-day difference pCO2;%<br> fco2.day;CO2 evasion day-time;g C m-2 d-1<br> fco2.night;CO2 evasion night-time;g C m-2 d-1<br> fco2.diff.gc;Absolute night-day difference fCO2;g C m-2<br> fco2.diff.per;Relative night-day difference fCO2;%<br> nobs.higher.night;Occurences when night > day;%<br>
