@article{20319,
  abstract     = {The time needed by deep convection to bring the atmosphere back to equilibrium is called convective adjustment timescale or simply adjustment timescale, typically denoted by . In the Community Atmospheric Model|Community Atmosphere Model (CAM),  is the convective available potential energy (CAPE) relaxation timescale and is 1 hr, worldwide. Observational evidence suggests that  is generally longer than 1 hr. Further, continental and oceanic convection are different in terms of the vigor of updrafts and can have different longevities. So using  hour worldwide in CAM has two potential caveats. A longer  improves the simulation of the mean climate. However, it does not address the land‐ocean heterogeneity of atmospheric deep convection. We investigate the prescription of two different CAPE relaxation timescales for land ( hr) and ocean ( to 4 hr). It is arguably an extremely crude parameterization of boundary layer control on atmospheric convection. We contrast a suite of 5‐year‐long simulations with two different  for land and ocean to having one  globally. The choice of longer  over ocean is guided by previous studies and inspired by observational pieces of evidence. Nonetheless, to complement our variable  experiments, we perform a simulation with  hr and  hrs. Most importantly, our key findings are immune to the exact values of prescribed  and . The CAM model, with two  values , improves convective‐stratiform rainfall partitioning and the Madden–Julian oscillation propagation characteristics.},
  author       = {GOSWAMI, BIDYUT B and Polesello, Andrea and Muller, Caroline J},
  issn         = {1942-2466},
  journal      = {Journal of Advances in Modeling Earth Systems},
  number       = {9},
  publisher    = {Wiley},
  title        = {{An assessment of representing land‐ocean heterogeneity via CAPE relaxation timescale in the Community Atmospheric Model 6 (CAM6)}},
  doi          = {10.1029/2025ms005035},
  volume       = {17},
  year         = {2025},
}

@article{19672,
  abstract     = {Some of the classical models of tropical cyclone intensification predict tropical cyclones to intensify up to a steady intensity, which depends on surface fluxes only, without any relevant role played by convective motions in the troposphere, typically assumed to have a moist adiabatic lapse rate. Simulations performed using the non-hydrostatic, high-resolution model System for Atmosphere Modeling in idealized settings (rotating radiative-convective equilibrium on a doubly periodic domain) show early intensification consistent with these theoretical expectations, but different intensity evolution, with the cyclone undergoing an oscillation in wind speed. This oscillation can be linked to feedbacks between the cyclone intensity and air buoyancy: convective heating, radiative heating, and mixing with warm low stratospheric air warm the mid and upper troposphere of the cyclone stabilizing the air column and thus reducing its intensity. After the intensity decay phase, mid and upper tropospheric cooling, mostly through cold advection from the surroundings, cooled by radiation, rebuilds Convective Available Potential Energy, that peaks just before a new intensification phase. These idealized simulations thus highlight the potentially important interactions between a tropical cyclone, its environment and radiation.},
  author       = {Polesello, Andrea and Charinti, Giousef Alexandros and Meroni, Agostino Niyonkuru and Muller, Caroline J and Pasquero, Claudia},
  issn         = {1942-2466},
  journal      = {Journal of Advances in Modeling Earth Systems},
  number       = {4},
  publisher    = {Wiley},
  title        = {{Intensity oscillations of tropical cyclones: Surface versus mid and upper tropospheric processes}},
  doi          = {10.1029/2024MS004613},
  volume       = {17},
  year         = {2025},
}

@inproceedings{14863,
  author       = {Polesello, Andrea and Muller, Caroline J and Pasquero, Claudia and Meroni, Agostino N.},
  booktitle    = {EGU General Assembly 2023},
  location     = {Vienna, Austria & Virtual},
  publisher    = {European Geosciences Union},
  title        = {{Intensification mechanisms of tropical cyclones}},
  doi          = {10.5194/egusphere-egu23-6157},
  year         = {2023},
}