Juliana Dias is a research physical scientist at the Physical Sciences Laboratory (PSL) of the NOAA Earth System Research Laboratories in Boulder Colorado. Her main interests include coupling between tropical convection and the large-scale atmospheric circulation, tropical-extratropical interactions, equatorial waves dynamics, and predictability of the atmosphere on daily to sub-seasonal time scales. Her work is focused on leveraging observations and models to understand and predict various aspects of tropical sub-seasonal variability and tropical-extratropical interactions. Juliana's current projects include developing model diagnostics aimed at improving model's representation of tropical variability and characterizing tropical origens of global forecast errors.