H2SO4–H2O binary and H2SO4–H2O–NH3 ternary homogeneous and ion-mediated nucleation: lookup tables version 1.0 for 3-D modeling application

Formation of new particles in the atmosphere has important implications for air quality and climate. Recently, we have developed a kinetically based H2SO4–H2O–NH3-ion nucleation model which well captures the absolute values of nucleation rates as well as dependencies of nucleation rates on NH3 and H...

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Bibliographic Details
Published in:Geoscientific Model Development 2020-06, Vol.13 (6), p.2663-2670
Main Authors: Yu, Fangqun, Nadykto, Alexey B, Luo, Gan, Herb, Jason
Format: Article
Language:English
Subjects:
Air quality
Ammonia
Atmosphere
Atmospheric models
Earth atmosphere
Ionization
Ions
Laboratories
Lookup tables
Modelling
Nucleation
Outdoor air quality
Relative humidity
Sulfuric acid
Sulphuric acid
Tables
Three dimensional models
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Summary:Formation of new particles in the atmosphere has important implications for air quality and climate. Recently, we have developed a kinetically based H2SO4–H2O–NH3-ion nucleation model which well captures the absolute values of nucleation rates as well as dependencies of nucleation rates on NH3 and H2SO4 concentrations, ionization rates, temperature, and relative humidity observed in the well-controlled Cosmics Leaving Outdoor Droplets (CLOUD) measurements. Here we employ the aforementioned recently developed kinetic nucleation model to generate nucleation rate lookup tables forH2SO4–H2O binary homogenous nucleation (BHN),H2SO4–H2O–NH3 ternary homogeneous nucleation (THN),H2SO4–H2O-ion binary ion-mediated nucleation (BIMN), andH2SO4–H2O–NH3-ion ternary ion-mediated nucleation (TIMN). A comparison of nucleation rates calculated using the lookup tables with CLOUD measurements of BHN, BIMN, THN, and TIMN is presented. The lookup tables cover a wide range of key parameters controlling binary, ternary, and ion-mediated nucleation in the Earth's atmosphere and are a cost-efficient solution for multidimensional modeling. The lookup tables and FORTRAN codes, made available through this work, can be readily used in 3-D modeling. The lookup tables can also be used by experimentalists involved in laboratory and field measurements for a quick assessment of nucleation involving H2SO4, H2O, NH3, and ions.
ISSN:1991-962X
1991-959X
1991-962X
1991-9603
DOI:10.5194/gmd-13-2663-2020