Global climatological data of ocean thermohaline parameters derived from WOA18

This is a global ocean climatological dataset of 17 thermohaline parameters such as isothermal layer (ITL) depth ( h T ), mixed layer (ML) depth ( h D ), thermocline gradient ( G T ), pycnocline gradient ( G D ) determined from temperature ( T ) and salinity ( S ) profiles of the National Centers for Environmental Information (NCEI) world ocean atlas 2018 (WOA18) using the double gradient method along with the identity-index ( i -index) showing the quality of the determination. With the identified ( h T , h D ) and ( G T , G D ), other parameters such as ITL heat content ( H ITL ), mixed layer fresh-water content ( F ML ), maximum thermocline gradient ( G Tmax ), thermocline depth ( h th ), temperature at thermocline depth ( T th ), maximum density gradient G Dmax ), pycnocline depth ( h pyc ), density at pycnocline depth ( ρ pyc ), and ( h T − h D ) (barrier layer if positive or compensated layer if negative). The dataset is located at the NOAA/NCEI website ( https://doi.org/10.25921/j3v2-jy50 ). It provides useful background information for ocean mixed layer dynamics, air-sea interaction, climatological studies. This paper is the only document for the dataset.