中国对流层二氧化硫光化学氧化过程的数值研究 - 环境科学学报.PDF

21 3 Vol21, No3 2001 5 ACTA SCIENT IAE CIRCUMSTANTIAE May, 2001 : 2001 : X5 15 : A 1 1 1 2 刘红年, 蒋维楣 , 汤剑平 , 李 昕 ( , 210093; 2 LAPC) : MM5 , , . : , O3 NOx NMHC , , SO O SO 2- , O 2 3 4 3 , , NMHC , NMHC O3 , OH , SO2 . : ; ; ; A numerical study on the troposphere photochemical oxidation process of sulfur dioxide over China 1 1 1 2 LIU Hongn an , JIANG We me , TANG J anp ng , LI X n ( Department of atmosphere sc ence, Nnaj ng un vers ty, Nanj ng 210093; 2. LAPC, Inst tut e of Atmospher c Sc ence, Ch nes Academy of Sc ence, Be j ng 100029) Abstract: A three d mens onal non- hydrostat c reg onal chem cal transport model was used to connect ed to a meso- scale meteorolog cal model( MM5) n order to s mulate the d str but on of tropospher c ozone and photochem cal ox dat on processes of sulfur d ox de over Ch naThe phys cs and chem cal processes cons dered n the model nvolve photochem cal mechan sm, dynam cs transport and d ffus on, dry and wet depos t on, gas phase and aqueous chem stryThe results showed that the concentrat on of ozone s ma nly dom nated by the em ss on of NOX and photochem cal process n dayt me, rad at on s the dec s ve factor of strength of photochem cal process and may cause the d ff erent da ly var at on of sulfur d ox de and ozone concentrat ons The results also showed that h gher value of ozone w ll ncrease the transformat on rat e of sulfur d ox de to sulfate, but th s eff ect s nfluenced by the rat o of NMHC to NO H gher NMHC concentrat on w ll reduce the concentr