Assessing Precipitation Over the Amazon Basin as Simulated by a Storm-Resolving Model

  • - By using ensemble simulations of the ICON model and satellite data we show that explicit convection leads to better representation of the intensity spectrum and diurnal cycle of the Amazon Rainfall.
  • - An explicit representation of convection enables the emergence of organized convective systems (OCS), which determines the diversity of precipitation diurnal cycle and high intensity rain rates over the Amazon.
  • - The environmental controls of OCS, as represented by explicit convection, provide insights into the important mechanisms for their development, as seen through the connection between cold pools & strong low-level easterlies to diurnal & nocturnal OCS, respectively.
  • - Despite the improvements, our results suggest that there are still unresolved processes that need to be considered to correctly simulate precipitating systems in the Amazon, such as their stratiform features.
  • Read the full article here: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022JD037436