Atmospheric Environment, Journal Year: 2024, Volume and Issue: 339, P. 120858 - 120858
Published: Oct. 11, 2024
Language: Английский
Geoscientific model development, Journal Year: 2025, Volume and Issue: 18(4), P. 1265 - 1286
Published: Feb. 28, 2025
Abstract. The adaptation of Earth system model (ESM) codes to modern computing architectures is challenging as ESMs consist a multitude different components. Historically grown and developed by scientists rather than software engineers, the individual components are often interwoven, making optimisation challenging, if not impossible. Thus, in last few years, have become increasingly modularised, and, with that, now disentangled from each other. This helps porting code section architectures, e.g. GPUs. For more 20 modularisation has been fundamental concept Modular Submodel System (MESSy). It an integrated framework providing data structures methods build comprehensive Each component, cloud microphysical scheme, dry deposition tracer gases, or diagnostic tools, output along satellite orbits, coded so-called submodel. submodel connected via MESSy infrastructure all other components, together forming system. was mainly for research atmospheric chemistry, so far, it always dynamical (climate weather forecast) model, i.e. what we call base model. development outside framework. Running full technical tests when only one tedious task unnecessarily resource-consuming. Therefore, DWARF, simplified based on infrastructure. We implemented definition very simple grid, parallelisation time control replace fully fledged DWARF serves valuable tool applications, such component implementations GPUs performance easy test environment process implementations. Due structure, applied can be used without any changes because interface exactly same. Furthermore, suited scientific purposes running models (with selection components), chemical box analysis chamber experiments trajectory imitating air parcel rising slowly into stratosphere. Column plume could also easily built DWARF. In this article, introduce setup show four example applications: (1) application using calculating orbital parameters, (2) kinetics including photolysis frequency calculation, (3) (4) some details GPU
Language: Английский
Citations
0
Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)
Published: May 13, 2025
Language: Английский
Citations
0
Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(7), P. 694 - 700
Published: June 18, 2024
Oxygenated volatile organic compounds (OVOCs) contribute to atmospheric secondary aerosols. To better constrain OVOC distributions, e.g., from the oxidation of phenolics, voltage scanning was applied for targeted destruction product nitrate (NO3–) clusters in a chemical ionization mass spectrometer. Herein, difference at which half remain (dV50) represents their bond strength. This study identified type and relative strength adducts distributions that can be observed hours our steady-state chamber (SAPHIR*). An unexpected increase curves containing nitrated phenols [e.g., C7H7NO3(NO3–)], attributed declustering double-analyte C14H14N2O6(NO3–)] small differences. Double-analyte were distinguished accretion C12H(10,12)Ox(NO3–)] by significantly lower intermolecular forces. Misidentifying C14H14N2O6 as products could lead an overestimation its contribution particle mass. In addition, higher bonding C6H(6,8)O4–9(NO3–) compared H2SO4(NO3–) indicates maximum sensitivities C6H(6,8)O4–9 collision limit. We elucidate acidity analytes HNO3. highlights additional dimensions gained suggests performing it clarify distribution complex urban air presence phenols.
Language: Английский
Citations
0
Atmospheric Environment, Journal Year: 2024, Volume and Issue: 339, P. 120858 - 120858
Published: Oct. 11, 2024
Language: Английский
Citations
0