Atmospherically Relevant Chemistry and Aerosol box model – ARCA box (version 1.2)

[摘要] We introduce the Atmospherically Relevant Chemistry andAerosol box model ARCA box (v.1.2.2). It is a zero-dimensional process modelwith a focus on atmospheric chemistry and submicron aerosol processes,including cluster formation. A novel feature in the model is its comprehensivegraphical user interface, allowing for detailed configuration anddocumentation of the simulation settings, flexible model input, and outputvisualization. Additionally, the graphical interface contains tools formodule customization and input data acquisition. These properties –customizability, ease of implementation and repeatability – make ARCA aninvaluable tool for any atmospheric scientist who needs a view on thecomplex atmospheric aerosol processes. ARCA is based on previous models(MALTE-BOX, ADiC and ADCHEM), but the code has been fully rewritten andreviewed. The gas-phase chemistry module incorporates the Master ChemicalMechanism (MCMv3.3.1) and Peroxy Radical Autoxidation Mechanism (PRAM) butcan use any compatible chemistry scheme. ARCA's aerosol module couples theACDC (Atmospheric Cluster Dynamics Code) in its particle formation module,and the discrete particle size representation includes the fully stationaryand fixed-grid moving average methods. ARCA calculates the gas-particlepartitioning of low-volatility organic vapours for any number of compoundsincluded in the chemistry, as well as the Brownian coagulation of the particles.The model has parametrizations for vapour and particle wall losses butaccepts user-supplied time- and size-resolved input. ARCA is written inFortran and Python (user interface and supplementary tools), can beinstalled on any of the three major operating systems and is licensed underGPLv3.

[学科分类] 土木及结构工程学