Articles | Volume 49
https://doi.org/10.5194/adgeo-49-105-2019
https://doi.org/10.5194/adgeo-49-105-2019
09 Sep 2019
 | 09 Sep 2019

Separating physical impacts from natural variability using piggybacking technique

Wojciech W. Grabowski
Editorial note: Please note that the ADGEO paper and its title originally included an alternative name for the piggybacking approach that is now recognized to be culturally insensitive and inappropriate. The editors of the journal ADGEO, the journal owner European Geosciences Union, and the publisher Copernicus Publications foster equality, diversity, and inclusiveness in scientific exchange, and do not condone in any way racism, discrimination, or cultural appropriation. The author did not intend to insult any ethnic groups by using this technique name when compiling the manuscript in 2019, apologizes for any offense taken, and is grateful for the opportunity to correct this mistake.

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Cited articles

Geresdi, I.: Idealized simulation of the Colorado hailstorm case: Comparison of bulk and detailed microphysics, Atmos. Res., 45, 237–252, https://doi.org/10.1016/S0169-8095(97)00079-3, 1998. 
Geresdi, I., Sarkadi, N., and Thompson, G.: Effect of the accretion by water drops on the melting of snowflakes, Atmos. Res., 149, 96–110, https://doi.org/10.1016/j.atmosres.2014.06.001, 2014. 
Grabowski, W. W.: Extracting microphysical impacts in large eddy simulations of shallow convection, J. Atmos. Sci. 71, 4493–4499, https://doi.org/10.1175/JAS-D-14-0231.1, 2014. 
Grabowski, W. W.: Untangling microphysical impacts on deep convection applying a novel modeling methodology, J. Atmos. Sci., 72, 2446–2464, https://doi.org/10.1175/JAS-D-14-0307.1, 2015. 
Grabowski W. W.: Can the impact of aerosols on deep convection be isolated from meteorological effects in atmospheric observations?, J. Atmos. Sci., 75, 3347–3363, https://doi.org/10.1175/JAS-D-18-0105.1, 2018. 
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Short summary
In a chaotic system, like moist convection, it is difficult to separate the impact of a physical process from effects of natural variability. This is because modifying even a small element of the system physics typically leads to a different system evolution. This paper discusses a relatively simple and computationally efficient modelling methodology that allows separation of the physical impact from differences originating from contrasting flow realizations.