@article{186171,
  author = {Akshaya Nikumbhn and Pu Lin and David Paynter and Yi Ming},
  title = {Does increasing horizontal resolution improve the simulation of intense tropical rainfall in GFDL{\textquoteright}s AM4 model?},
  abstract = {<p>We examine tropical rainfall from the Geophysical Fluid Dynamics Laboratory{\textquoteright}s Atmosphere Model version 4 (GFDL AM4) at three horizontal resolutions of 100 km, 50 km, and 25\&nbsp;km. The model produces more intense rainfall at finer resolutions, but a large discrepancy still exists between the simulated and the observed frequency distribution. We use a theoretical precipitation scaling diagnostic to examine the frequency distribution of the simulated rainfall. The scaling accurately produces the frequency distribution at moderate-to-high intensity (>=10\&nbsp;mm\&nbsp;day<sup>-1</sup>). Intense tropical rainfall at finer resolutions is produced primarily from the increased contribution of resolved precipitation and enhanced updrafts. The model becomes more sensitive to the grid-scale updrafts than local thermodynamics at high rain rates as the contribution from the resolved precipitation increases.</p>},
  year = {2024},
  journal = {Geophysical Research Letters},
  volume = {51},
  pages = {e2023GL106708},
  url = {https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL106708},
}