Current variables

variables <- dbGetQuery(db, "SELECT * FROM odm2.variables")

variableid	variabletypecv	variablecode	variablenamecv	variabledefinition	speciationcv	nodatavalue
1	Stable isotopes	delta_18OOfH2O	delta-18O of H2O	Isotope 18O of water	NA	-9999
2	Stable isotopes	delta_DOfH2O	delta-D of H2O	hydrogen isotopes of water	NA	-9999
3	Soil	volumetricWaterContent	Volumetric water content	Volume of liquid water relative to bulk volume. Used for example to quantify soil moisture	NA	-9999
4	Soil	temperature	Temperature	Temperature	NA	-9999
5	Soil	bulkElectricalConductivity	Bulk electrical conductivity	Bulk electrical conductivity of a medium measured using a sensor such as time domain reflectometry (TDR), as a raw sensor response in the measurement of a quantity like soil moisture.	NA	-9999
6	Water quality	methane	Methane	Methane (CH4)	NA	-9999
7	Water quality	carbonDioxide	Carbon dioxide	Carbon dioxide (CO2)	NA	-9999
8	Climate	windSpeed	Wind speed	Wind speed	NA	-9999
10	Climate	windGustSpeed	Wind gust speed	Speed of gusts of wind	NA	-9999
11	Climate	windDirection	Wind direction	Wind direction	NA	-9999