This region of the world is characterized by marine stratocumulus clouds. The ENA is providing a rare, long-term data set about the response of these low clouds to changes in atmospheric greenhouse gases and aerosols—a major source of uncertainty in global and regional climate models.
ARM’s previous research (2009) on Graciosa Island revealed that it has the ideal mix of conditions to study how clouds, aerosols, and precipitation interact. Research in this area is important because:
- Data from ENA’s 2009 deployment resulted in the first climatology of detailed vertical structure of cloud and precipitation properties of low clouds at a remote subtropical marine site.
- These data provided new information about the structure and variability of the remote marine boundary-layer system and the factors that influence it.