Juliana Dias is a scientist at the Physical Sciences Laboratory (PSL) of the NOAA Earth System Research Laboratories in Boulder Colorado. Her research centers on tropical meteorology and weather prediction, with an emphasis on developing methods that integrate observations and theory to enhance forecast skill over North America. Key areas of interest include the coupling between tropical convection and large-scale atmospheric circulation, tropical–extratropical interactions, and subseasonal-to-seasonal (S2S) prediction. Juliana's current projects include developing model diagnostics aimed at improving model's representation of tropical variability and characterizing tropical origins of global forecast errors.