Iodine's impact on tropospheric oxidants: a global model study in GEOS-Chem
Iodine's impact on tropospheric oxidants: a global model study in GEOS-Chem
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DOI：
10.5194/acp-16-1161-2016
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发表时间：
2015-08
影响因子：
6.3
通讯作者：
T. Sherwen;M. Evans;L. Carpenter;S. Andrews;R. Lidster;B. Dix;T. Koenig;R. Sinreich;I. Ortega;R. Volkamer;A. Saiz‐Lopez;C. Prados-Román;A. Mahajan;C. Ordóñez
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文献类型：
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作者：
T. Sherwen;M. Evans;L. Carpenter;S. Andrews;R. Lidster;B. Dix;T. Koenig;R. Sinreich;I. Ortega;R. Volkamer;A. Saiz‐Lopez;C. Prados-Román;A. Mahajan;C. Ordóñez
抽象的。我们提出了一个全球模拟对流层碘化学的GEOS-Chem化学传输模式。这包括有机和无机碘源，标准气相碘化学，和简化的高碘氧化物（I2 OX，X = 2，3，4）化学，光解，沉积和参数化的多相反应。与最近的氧化碘（IO）观测结果相比，模拟结果显示，海洋边界层中可用的地面观测值的平均偏差为± 90（极地以外），在自由对流层（350 hPa 1）中，氧含量为73%，其中氧含量为O_3 + NO_2 + 2NO_3 + PAN + PMN+PPN + HNO_4 + 3N_2O_5 + HNO_3 + BrO + HOBr + BrNO_2 + 2BrNO 3 + MPN + IO + HOI + INO 2 + 2 INO 3 + 2 OIO +2 I2 O2 + 3 I2 O3 + 4 I2 O 4，其中PAN =过氧化乙酰硝酸酯，PPN =过氧化丙酰硝酸酯，MPN =过氧化甲基硝酸酯，MPN =过氧化甲基丙烯酰硝酸酯。
Abstract. We present a global simulation of tropospheric iodine chemistry within the GEOS-Chem chemical transport model. This includes organic and inorganic iodine sources, standard gas-phase iodine chemistry, and simplified higher iodine oxide (I2OX, X = 2, 3, 4) chemistry, photolysis, deposition, and parametrized heterogeneous reactions. In comparisons with recent iodine oxide (IO) observations, the simulation shows an average bias of ∼ +90 % with available surface observations in the marine boundary layer (outside of polar regions), and of ∼ +73 % within the free troposphere (350 hPa 1 Here OX is defined as O3 + NO2 + 2NO3 + PAN + PMN+PPN + HNO4 + 3N2O5 + HNO3 + BrO + HOBr + BrNO2+2BrNO3 + MPN + IO + HOI + INO2 + 2INO3 + 2OIO+2I2O2 + 3I2O3 + 4I2O4, where PAN = peroxyacetyl nitrate, PPN = peroxypropionyl nitrate, MPN = methyl peroxy nitrate, and MPN = peroxymethacryloyl nitrate.