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Gas-phase chemistry model

Application of random forest regression to the calculation of gas-phase chemistry within the GEOS-Chem chemistry model v10

Application of random forest regression to the calculation of gas-phase chemistry within the GEOS-Chem chemistry model v10

... istry model, we generate a separate random forest ...all model grid cells, ...of model values, the training samples are evenly drawn from each decile of the predictor ...

18

Application of random forest regression to the calculation of gas-phase chemistry within the GEOS-Chem chemistry model v10

Application of random forest regression to the calculation of gas-phase chemistry within the GEOS-Chem chemistry model v10

... istry model, we generate a separate random forest ...all model grid cells, ...of model values, the training samples are evenly drawn from each decile of the predictor ...

18

Implementation and evaluation of online gas-phase chemistry within a regional climate model (RegCM-CHEM4)

Implementation and evaluation of online gas-phase chemistry within a regional climate model (RegCM-CHEM4)

... of chemistry-climate models with various lev- els of offline and online coupling between the chemistry and atmospheric dynamics have been developed to investigate the interactions between climate and air ...

20

Studies of Arctic halogen chemistry from the snowpack to the gas phase

Studies of Arctic halogen chemistry from the snowpack to the gas phase

... The cycling of BrO x and ClO x was studied during the 2012 BROMEX field campaign in Barrow, Alaska via the deployment of the flowtube method as described in Chapter 2. Using a 0-D model the effect of NO x on the ...

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Experiments on Gas Phase Chemistry with High Sensitivity Laser Spectroscopy

Experiments on Gas Phase Chemistry with High Sensitivity Laser Spectroscopy

... matter in urban environments. 1 Of course, atmospheric models need to be applicable to a variety of situations and areas of the atmosphere, and significant errors still exist in the model. Section 1 (Chapter 1 – ...

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Description and evaluation of the Multiscale Online Nonhydrostatic AtmospheRe CHemistry model (NMMB-MONARCH) version 1.0: gas-phase chemistry at global scale

Description and evaluation of the Multiscale Online Nonhydrostatic AtmospheRe CHemistry model (NMMB-MONARCH) version 1.0: gas-phase chemistry at global scale

... regional model is formulated on a rotated longitude–latitude grid, with the Equator of the rotated sys- tem running through the middle of the integration domain, resulting in more uniform grid ...the model ...

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A compilation of tropospheric measurements of gas-phase and aerosol chemistry in polar regions

A compilation of tropospheric measurements of gas-phase and aerosol chemistry in polar regions

... Weller, R., Wagenbach, D., Legrand, M., Els¨asser, C., Tian-Kunze, X., and K¨onig-Langlo, G.: Continuous 25-yr aerosol records at coastal Antarctica – I: inter-annual variability of ionic com- pounds and links to climate ...

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Improvement and further development in CESM/CAM5: gas-phase chemistry and inorganic aerosol treatments

Improvement and further development in CESM/CAM5: gas-phase chemistry and inorganic aerosol treatments

... Abstract. Gas-phase chemistry and subsequent gas-to- particle conversion processes such as new particle formation, condensation, and thermodynamic partitioning have large impacts on air ...

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Implementation, development and evaluation of the gas-phase chemistry within the Global/Regional NMMB/BSC Chemical Transport Model (NMMB/BSC-CTM)

Implementation, development and evaluation of the gas-phase chemistry within the Global/Regional NMMB/BSC Chemical Transport Model (NMMB/BSC-CTM)

... the model seems to be the responsi- ble for this higher OH ...The model is in relatively good agreement with CO observations at the surface with negative biases at stations over Europe and Japan and ...

198

Crafting Detailed Kinetic Mechanisms for Gas- and Condensed-Phase Systems using Computational Quantum Chemistry.

Crafting Detailed Kinetic Mechanisms for Gas- and Condensed-Phase Systems using Computational Quantum Chemistry.

... current model simulates the aerosol droplets as dummy species ...aerosol chemistry on other hypergolic bipropellant pairs could give insight onto how important aerosol chemistry is to hypergolic ...

663

Modelling non-equilibrium secondary organic aerosol formation and evaporation with the aerosol dynamics, gas- and particle-phase chemistry kinetic multilayer model ADCHAM

Modelling non-equilibrium secondary organic aerosol formation and evaporation with the aerosol dynamics, gas- and particle-phase chemistry kinetic multilayer model ADCHAM

... the model and measurements at the beginning of the experiment is instead reached when we include relatively rapid oligomerization in the particle ...the model simulation using the semi-empirical ...

41

Aerosol mass yields of selected biogenic volatile organic compounds– a theoretical study with nearly explicit gas-phase chemistry

Aerosol mass yields of selected biogenic volatile organic compounds– a theoretical study with nearly explicit gas-phase chemistry

... The model does not simulate appreciable SOA mass yields for oxidation of BVOCs with NO 3 , as PRAM currently does not consider autoxidation of RO 2 formed from NO 3 oxida- tion of ...particle phase at lower ...

18

Modeling Gas-Grain Chemistry in Dark Cloud Conditions

Modeling Gas-Grain Chemistry in Dark Cloud Conditions

... in gas phase, so gas phase processes deserve first consideration in any study on interstellar ...between gas phase chemistry and grain surface chemistry is ...

214

Gas-phase radical chemistry in the troposphere

Gas-phase radical chemistry in the troposphere

... One of the roles of atmospheric radical chemistry, as driven by OH, is to ‘‘cleanse’’ the troposphere of a wide-range of the organic compounds. The OH radical is known to react with most trace gases and in many ...

20

Gas-phase chemistry of element 114, flerovium

Gas-phase chemistry of element 114, flerovium

... of Chemistry and Biochemistry, 3012 Bern, Switzerland ...by gas-solid chromatography upon its adsorption on a gold ...Fl chemistry have been published so ...

6

Gas Phase Terahertz Spectroscopy and the Study of Complex Interstellar Chemistry

Gas Phase Terahertz Spectroscopy and the Study of Complex Interstellar Chemistry

... contribution nonetheless, as this represents a benchmark in the study of low barrier internal rotors. Chapter 4 and 5 discuss the millimeter wave rotational spectra of 2-cyanoethanol and methoxyacetonitrile, both of ...

177

Gas Phase Negative Ion Chemistry: Reactivity and Mechanism in Fundamental Organic Reactions

Gas Phase Negative Ion Chemistry: Reactivity and Mechanism in Fundamental Organic Reactions

... environment. Gas phase studies provide insight into the intrinsic nature of a reaction without the interference of solvent effects and the presence of counter ...supramolecular chemistry and ...

211

Gas Phase Train in Upstream Oil & Gas Fields: PART-I Model Development

Gas Phase Train in Upstream Oil & Gas Fields: PART-I Model Development

... complex gas processing operations. Processes like gas sweetening and gas dehydra- tion are deemed as difficult control tasks for both process and control ...presented model is aimed to ease ...

8

Catalytic Hot Gas Filtration for Tailoring Vapor-Phase Chemistry of Fast Pyrolysis Bio-Oils

Catalytic Hot Gas Filtration for Tailoring Vapor-Phase Chemistry of Fast Pyrolysis Bio-Oils

... Keywords: bio-oil; biomass conversion; carbide catalyst; ketonization; doped carbides.. Introduction.[r] ...

11

Electrochemistry in the gas phase

Electrochemistry in the gas phase

... The ion current was measured for both electrodes and the potential between them measured while the concentration o f additive introduced into the working compartment was varied. The reason concurrent measurements were ...

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