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DOI: 10.1002/2015GL065562
论文题名:
Bimodal distribution of free tropospheric ozone over the tropical western Pacific revealed by airborne observations
作者: Pan L.L.; Honomichl S.B.; Randel W.J.; Apel E.C.; Atlas E.L.; Beaton S.P.; Bresch J.F.; Hornbrook R.; Kinnison D.E.; Lamarque J.-F.; Saiz-Lopez A.; Salawitch R.J.; Weinheimer A.J.
刊名: Geophysical Research Letters
ISSN: 0094-9444
EISSN: 1944-9175
出版年: 2015
卷: 42, 期:18
起始页码: 7844
结束页码: 7851
语种: 英语
英文关键词: convective transport ; dry intrusions ; ozone and water vapor relationship ; tropospheric ozone
Scopus关键词: Ozone ; Tropics ; Troposphere ; Controlling mechanism ; Convective transport ; Dry intrusions ; Physical interpretation ; Potential temperature ; Tropical tropopause layers ; Tropical Western Pacific ; Tropospheric ozone ; Ozone layer ; airborne sensing ; bimodal association ; convective boundary layer ; mixing ratio ; ozone ; relative humidity ; troposphere ; Pacific Ocean ; Pacific Ocean (Tropical)
英文摘要: A recent airborne field campaign over the remote western Pacific obtained the first intensive in situ ozone sampling over the warm pool region from oceanic surface to 15-km altitude (near 360-K potential temperature level). The new data set quantifies ozone in the tropical tropopause layer under significant influence of convective outflow. The analysis further reveals a bimodal distribution of free tropospheric ozone mixing ratio. A primary mode, narrowly distributed around 20-ppbv, dominates the troposphere from the surface to 15-km. A secondary mode, broadly distributed with a 60-ppbv modal value, is prominent between 3 and 8-km (320-K to 340-K potential temperature levels). The latter mode occurs as persistent layers of ozone-rich drier air and is characterized by relative humidity under 45%. Possible controlling mechanisms are discussed. These findings provide new insight into the physical interpretation of the "S"-shaped mean ozone profiles in the tropics. © 2015 American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945218516&doi=10.1002%2f2015GL065562&partnerID=40&md5=44df06d750fb222f65261904e3e07b1b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9059
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: National Center for Atmospheric Research, Boulder, CO, United States

Recommended Citation:
Pan L.L.,Honomichl S.B.,Randel W.J.,et al. Bimodal distribution of free tropospheric ozone over the tropical western Pacific revealed by airborne observations[J]. Geophysical Research Letters,2015-01-01,42(18).
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