The 1985 chlorine and fluorine inventories in the stratosphere based on ATMOS observations at 30° north latitude
The 1985 chlorine and fluorine inventories in the stratosphere based on ATMOS observations at 30° north latitude
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根据北纬 30° ATMOS 观测得出的 1985 年平流层氯和氟清单
DOI：
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发表时间：
1992
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通讯作者：
E. Mahieu
中科院分区：
文献类型：
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作者：
R. Zander;M. Gunson;C. B. Farmer;C. Rinsland;F. Irion;E. Mahieu
利用3号空间实验室（1985年4月30日至5月1日）上的大气痕量分子分光仪-傅里叶变换分光仪进行的一组高分辨率红外太阳观测被用来评估平流层中奇氯和氟化学族的总预算。这些预算是基于在北纬30°附近测量的HCl、HF、CH 3Cl、ClONO 2、CCl 4、CCl 2F 2、CCl 3F、CHClF 2、CF 4、COF 2和SF6的体积混合比分布。当包括大气环流监测系统未测量的物质的实际浓度时，即，源气CH_3CCl_3和C_2F_3Cl_3在25 km以下，储层ClO、HOCl和COFCl在15 ~ 40 km之间（用其他技术实际测量的五种气体），1985年30° N纬向平均氯总混合比Cl被发现等于在平流层中，大气总浓度为（2.58±0.10）ppbv，在平流层顶附近没有明显下降。结果表明，总氟的体积混合比随高度的增加而缓慢但稳定地下降，平流层平均值约为（1.15±0.12）ppbv。两个不确定度对应于一个标准差。这些平均春季1985年平流层预算是相称的对流层Cl和F浓度在20世纪80年代初，当津贴的增长率，其源气体在地面和对流层空气被输送到平流层所需的时间报告的值。讨论的结果，重点保护氟和氯之间的源，汇和水库的气体在整个平流层的分区。
The set of high-resolution infrared solar observations made with the Atmospheric Trace Molecule Spectroscopy (ATMOS)-Fourier transform spectrometer from onboard Spacelab 3 (30 April-1 May 1985) has been used to evaluate the total budgets of the odd chlorine and fluorine chemical families in the stratosphere. These budgets are based on volume mixing ratio profiles measured for HCl, HF, CH3Cl, ClONO2, CCl4, CCl2F2, CCl3F, CHClF2, CF4, COF2, and SF6 near 30° north latitude. When including realistic concentrations for species not measured by ATMOS, i.e., the source gases CH3CCl3 and C2F3Cl3 below 25 km, and the reservoirs ClO, HOCl and COFCl between 15 and 40 km (five gases actually measured by other techniques), the 30° N zonal 1985 mean total mixing ratio of chlorine, Cl, was found to be equal to (2.58±0.10) ppbv (parts per billion by volume) throughout the stratosphere, with no significant decrease near the stratopause. The results for total fluorine indicate a slight, but steady, decrease of its volume mixing ratio with increasing altitude, around a mean stratospheric value of (1.15±0.12) ppbv. Both uncertainties correspond to one standard deviation. These mean springtime 1985 stratospheric budgets are commensurate with values reported for the tropospheric Cl and F concentrations in the early 1980s, when allowance is made for the growth rates of their source gases at the ground and the time required for tropospheric air to be transported into the stratosphere. The results are discussed with emphasis on conservation of fluorine and chlorine and the partitioning among source, sink, and reservoir gases throughout the stratosphere.