Disturbance Driven Rainfall on O‘ahu

This research explores the relationship between 4-types of atmospheric disturbances and their contributions to daily rainfall on O‘ahu Hawai‘i. On average, atmospheric disturbances account for 29% of the annual and 41% of the seasonal (Nov – April) rainfall on O‘ahu Hawai‘i. Cold, fronts are the most common disturbance type, and fronts that cross over the island are shown to bring significantly more rainfall than the fronts that track to the north of the Island chain…

Shifting Streamflow Extremes

In Hawaiʻi, the maximum streamflow in a year was not always the result of the maximum rainfall, based on analyses from 1975 to 2005. The timing of both maximum events has shifted from early Jan to late Dec, likely due to the changes in ENSO…