5:15 PM - 6:45 PM
[AOS14-P02] Reassessing changes in oceanic evaporation over recent decades with updated dataset
Keywords:Surface turbulent heat flux, Decadal variability, Water cycle, Extreme weather
In recent decades, there has been an increase in atmospheric water vapor. One of the main contributors to this increase is oceanic evaporation, which fluctuates in response to oceanic and atmospheric conditions. Therefore, it is important to investigate variations in evaporation, taking into account both seasons and ocean basins. This clarification is crucial for a better understanding of how changes in evaporation affect precipitation patterns. A recent study has highlighted potential issues with oceanic evaporation in existing atmospheric reanalysis datasets. The study aims to re-evaluate the long-term trend of oceanic evaporation using recently published and more reliable surface turbulent heat flux data (Japanese Ocean Flux Data Sets with Use of Remote-Sensing Observations Version 1.2). The updated dataset is used to assess the regional characteristics of long-term latent heat flux trends and their mechanisms. In addition, we will examine the decadal variations in short-term anomalous evaporation events, which are critical to comprehending their influence on decadal changes in extreme weather.