Conserved Variable Analysis of the Convective Boundary Layer Thermodynamic Structure over the Tropical Oceans

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Abstract
An analysis of FGGE dropwindsonde data using conserved thermodynamic variables shows mixing line structures for the convective boundary layer over the equatorial Pacific. Deeper boundary layers show a double structure. Reversals of the gradients of mixing ratio and equivalent potential temperature above the boundary- layer top are present in all the averages and suggest that the origin of the air sinking into the boundary layer needs further study.