Any process that activates or increases the frequency, rate or extent of directed movement of RNA from the nucleus into the cytoplasm.
Synonyms:
exact_synonym:
positive regulation of RNA export from cell nucleus; positive regulation of RNA export out of nucleus; positive regulation of RNA transport from nucleus to cytoplasm; positive regulation of RNA-nucleus export; up regulation of RNA export from nucleus; upregulation of RNA export from nucleus
narrow_synonym:
activation of RNA export from nucleus; stimulation of RNA export from nucleus