A study of the importance of initial conditions for photochemical oxidant modeling
作者： Erik Berge , Ho-Chun Huang , Julius Chang , Tsun-Hsien Liu
DOI: 10.1029/2000JD900227
关键词: Planetary boundary layer 、 Environmental chemistry 、 Impact model 、 Troposphere 、 Model integration 、 Photochemical oxidants 、 Box model 、 Meteorology 、 Isoprene 、 Chemistry 、 Earth-Surface Processes 、 Ecology (disciplines) 、 Earth and Planetary Sciences (miscellaneous) 、 Space and Planetary Science 、 Palaeontology 、 Forestry 、 Aquatic science 、 Atmospheric Science 、 Soil science 、 Geochemistry and Petrology 、 Geophysics 、 Oceanography 、 Water Science and Technology
摘要: We present a study of the impact initial concentrations on modeling photochemical oxidants. A simple model is employed, and an factor defined which describes ratio between concentration time-dependent concentration. The calculations have been carried out with data from box comprehensive three-dimensional (3-D) model. Results are for three different sites in California San Joaquin Valley. By using chemical very active chemistry rather high obtained since no transport processes included. small already after 24 hours integration under such conditions. more realistic 3-D show that reduced to less than 10% within planetary boundary layer 48 nearly all components studied. An exception sum selected grouped species Ox + NO2 NO3 N2O5 HNO3 PAN (sum reservoir O3) not below before approximately 3 days at two least polluted sites. In free troposphere factors large even paraffin, ethene, isoprene. For PAN, still found days. strongly complicates any evaluation by use measurements.
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