An emission module for ICON-ART 2.0: implementation and simulations of acetone

Weimer, Michael; Schröter, Jennifer; Eckstein, J.; Deetz, Konrad; Neumaier, Marco; Fischbeck, Garlich; Hu, Li; Millet, Dylan B.; Rieger, Daniel; Vogel, H.; Vogel, Bernhard; Reddmann, Thomas; Kirner, Oliver; Ruhnke, Roland; Braesicke, Peter

doi:10.5194/gmd-10-2471-2017

Cited by 25 publications

(28 citation statements)

References 77 publications

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“…The ART extensions allow for an online treatment of aerosol dynamics and atmospheric chemistry. The model application of this study is accompanied by significant further developments of the emission parameterizations regarding mineral dust and BVOCs (Weimer et al, 2017). Furthermore, a parameterization for…”

Section: Model Framework and Setupmentioning

confidence: 99%

Numerical simulations of aerosol radiative effects and their impact on clouds and atmospheric dynamics over southern West Africa

et al. 2018

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Abstract. Southern West Africa (SWA) is undergoing rapid and significant socioeconomic changes associated with a massive increase in air pollution. Still, the impact of atmospheric pollutants, in particular that of aerosol particles, on weather and climate in this region is virtually unexplored. In this study, the regional-scale model framework COSMO-ART is applied to SWA for a summer monsoon process study on 2–3 July 2016 to assess the aerosol direct and indirect effect on clouds and atmospheric dynamics. The modeling study is supported by observational data obtained during the extensive field campaign of the project DACCIWA (Dynamics–Aerosol–Chemistry–Cloud Interactions in West Africa) in June–July 2016. As indicated in previous studies, a coastal front is observed that develops during daytime and propagates inland in the evening (Atlantic inflow). Increasing the aerosol amount in COSMO-ART leads to reduced propagation velocities with frontal displacements of 10–30 km and a weakening of the nocturnal low-level jet. This is related to a subtle balance of processes related to the decrease in near-surface heating: (1) flow deceleration due to reduced land–sea temperature contrast and thus local pressure gradient, (2) reduced turbulence favoring frontal advance inland and (3) delayed stratus-to-cumulus transition of 1–2 h via a later onset of the convective boundary layer. The spatial shift of the Atlantic inflow and the temporal shift of the stratus-to-cumulus transition are synergized in a new conceptual model. We hypothesize a negative feedback of the stratus-to-cumulus transition on the Atlantic inflow with increased aerosol. The results exhibit radiation as the key player governing the aerosol affects on SWA atmospheric dynamics via the aerosol direct effect and the Twomey effect, whereas impacts on precipitation are small.

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Section: Model Framework and Setupmentioning

confidence: 99%

Numerical simulations of aerosol radiative effects and their impact on clouds and atmospheric dynamics over southern West Africa

et al. 2018

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“…These tracers can also be used to investigate fundamental composition-circulation feedbacks. The selection is an extension of the set of parameterisations described in Rieger et al (2015) and Weimer et al (2017).…”

Section: Implementation Of Passive and Chemical Tracers In Icon-artmentioning

confidence: 99%

“…ICON-ART extends the numerical weather and climate prediction system ICON with (gas-phase) chemistry, aerosol dynamics and related feedback processes. A compre-hensive treatment of feedback processes between chemistry, aerosols, clouds and radiation can now be included in recent and future studies (Gasch et al, 2017;Rieger et al, 2017;Weimer et al, 2017;Eckstein et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Unstructured grids like the icosahedral ICON grid show advantages regarding the performance on current high-performance computing systems (e.g. Zängl et al, 2015). Taking into account the increase of computational power over the last years, it is obvious that more diagnostic and prognostic tracers will be included in future simulations than before.…”

Section: Introductionmentioning

confidence: 99%

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ICON-ART 2.1: a flexible tracer framework and its application for composition studies in numerical weather forecasting and climate simulations

et al. 2018

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Atmospheric composition studies on weather and climate timescales require flexible, scalable models. The ICOsahedral Nonhydrostatic model with Aerosols and Reactive Trace gases (ICON-ART) provides such an environment. Here, we introduce the most up-to-date version of the flexible tracer framework for ICON-ART and explain its application in one numerical weather forecast and one climate related case study. We demonstrate the implementation of idealised tracers and chemistry tendencies of different complexity using the ART infrastructure. Using different ICON physics configurations for weather and climate with ART, we perform integrations on different timescales, illustrating the model's performance. First, we present a hindcast experiment for the 2002 ozone hole split with two different ozone chemistry schemes using the numerical weather prediction physics configuration. We compare the hindcast with observations and discuss the confinement of the vortex split using an idealised tracer diagnostic. Secondly, we study AMIPtype integrations using a simplified chemistry scheme in conjunction with the climate physics configuration. We use two different simulations: the interactive simulation, where modelled ozone is coupled back to the radiation scheme, and the non-interactive simulation that uses a default background climatology of ozone. Additionally, we introduce changes of water vapour by methane oxidation for the interactive sim-ulation. We discuss the impact of stratospheric ozone and water vapour variations in the interactive and non-interactive integrations on the water vapour tape recorder, as a measure of tropical upwelling changes. Additionally we explain the seasonal evolution and latitudinal distribution of the age of air. The age of air is a measure of the strength of the meridional overturning circulation with young air in the tropical upwelling region and older air in polar winter downwelling regions. We conclude that our flexible tracer framework allows for tailor-made configurations of ICON-ART in weather and climate applications that are easy to configure and run well.

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“…The selection is an extension of the set of parameterisations described in Rieger et al (2015) and Weimer et al (2017).…”

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confidence: 99%

ICON-ART 2.1 – A flexible tracer framework and its application for composition studies in numerical weather forecasting and climate simulations

Schröter¹,

Rieger²,

Stassen³

et al. 2018

Preprint

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Abstract.Atmospheric composition studies on weather and climate time scales require flexible, scalable models. The ICOsahedral Nonhydrostatic model with Aerosols and Reactive Trace gases (ICON-ART) provides such an environment. Here, we introduce the most up-to-date version of the flexible tracer framework for ICON-ART and explain its application in one numerical weather forecast and one climate related case study. We demonstrate the implementation of idealised tracers and chemistry tendencies 5 of different complexity using the ART infrastructure. Using different ICON physics configurations for weather and climate with ART, we perform integrations on different time scales, illustrating the model's performance. First, we present a hindcast experiment for the 2002 ozone hole split with two different ozone chemistry schemes using the numerical weather prediction physics configuration. We compare the hindcast with observations and discuss the confinement of the split-vortex using an idealised tracer diagnostic. Secondly, we study AMIP type integrations using a simplified chemistry scheme in conjunction 10 with the climate physics configuration. We use two different simulations: The interactive simulation, where modelled ozone is coupled back to the radiation scheme and the non-interactive simulation that uses a default background climatology of ozone.Additionally, we introduce a chemical source term for water vapour for the interactive simulation. We discuss the impact of stratospheric ozone and water vapour variations in the interactive and non-interactive integrations on the water vapour tape recorder, as a measure of tropical upwelling changes. Additionally we explain the seasonal evolution and latitudinal distribution 15 of the age of air. The age of air is measure of the strength of the meridional overturning circulation with young air in the tropical upwelling region and older air in polar winter downwelling regions. We conclude that our flexible tracer framework allows for tailor-made configurations of ICON-ART in weather and climate applications that are easy to configure and run well. 1Geosci. Model Dev. Discuss., https://doi

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An emission module for ICON-ART 2.0: implementation and simulations of acetone

Cited by 25 publications

References 77 publications

Numerical simulations of aerosol radiative effects and their impact on clouds and atmospheric dynamics over southern West Africa

Numerical simulations of aerosol radiative effects and their impact on clouds and atmospheric dynamics over southern West Africa

ICON-ART 2.1: a flexible tracer framework and its application for composition studies in numerical weather forecasting and climate simulations

ICON-ART 2.1 – A flexible tracer framework and its application for composition studies in numerical weather forecasting and climate simulations

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