DALES code and input files used in the publication Helfer & Nuijens (2021, JGR)
Description
Exact version of the code of the Dutch Atmospheric Large-Eddy Simulation (DALES) and input files used to simulate the effect of wind shear on shallow trade-wind cumulus convection, as used for an an open-access publication submitted to the Journal of Geophysical Research Atmospheres: Helfer & Nuijens (2021), The morphology of simulated cumulus congestus systems under wind shear.
The code is based on version 4.2 of DALES with the addition of a weak temperature gradient (WTG) assumption based on Daleu et al. (2012) to calculate the subsidence profile interactively and an additional switch to turn off the evaporation of precipiation (l_noevap) inspired by Böing et al. (2012). DALES is open-source software, written in Fortran, documented in Heus et al. (2010) and made available under the terms of the GNU GPL version 3 at https://github.com/dalesteam/dales.
The input files include the initial profiles ('prof.inp.*' and 'scalar.inp'), the large-scale and nudging forcings ('lscale.inp.*' and 'nudge_0-48.inp') and a namelist file with options ('namoptions'). The case set-up is inspired by Bellon et al. (2012) and Vogel et al. (2016).
Some sample output of the simulations covered in Helfer & Nuijens (2021) is provided as well.
Files
dales4.2+wtg+ncp.zip
Additional details
Funding
References
- Helfer, K. C. & Nuijens, L. (2021). The morphology of simulated cumulus congestus systems under wind shear. Submitted to Journal of Geophysical Research: Atmospheres
- Bellon, G., & Stevens, B. (2012). Using the Sensitivity of Large-Eddy Simulations to Evaluate Atmospheric Boundary Layer Models. Journal of the Atmospheric Sciences , 69 (5), 1582–1601. doi: 10.1175/JAS-D-11-0160.1
- Böing, S. J., Jonker, H. J. J., Siebesma, A. P. & Grabowski, W. W. (2012). Influence of the Subcloud Layer on the Development of a Deep Convective Ensemble. Journal of the Atmospheric Sciences, 69(9), 2682-2698. doi: 10.1175/JAS- D- 11- 0317.1
- Daleu, C. L., Woolnough, S. J., & Plant, R. S. (2012). Cloud-Resolving Model Simulations with One- and Two-Way Couplings via the Weak Temperature Gradient Approximation. Journal of the Atmospheric Sciences , 69 (12), 3683–3699. doi: 10.1175/JAS-D-12-058.1
- Heus, T., van Heerwaarden, C. C., Jonker, H. J. J., Siebesma, P. A., Axelsen, S., van den Dries, K., . . . Vila-Guerau de Arellano, J. (2010). Formulation of the Dutch Atmospheric Large-Eddy Simulation (DALES) and overview of its applications. Geoscientific Model Development , 3 (2), 415–444. doi: 10.5194/gmd-3-415-2010
- Vogel, R., Nuijens, L., & Stevens, B. (2016). The role of precipitation and spatial organization in the response of trade-wind clouds to warming. Journal of Advances in Modeling Earth Systems , 8 (2), 843–862. doi: 10.1002/2015MS000568