Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029918 |
A Multiscale Analysis of the Tropospheric and Stratospheric Mechanisms Leading to the March 2016 Extreme Surface Ozone Event in Mexico City | |
Barrett, Bradford S.1; Raga, Graciela B.2; Retama, Armando3; Leonard, Christopher1 | |
2019-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:8页码:4782-4799 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Mexico |
英文摘要 | This study analyzed the physical mechanisms behind a multiday high surface ozone (O-3) event in Mexico City in March 2016. In early March, a strong zonal jet stream over the Pacific Ocean amplified and underwent wave breaking. An unusual cutoff low pressure system then migrated across central Mexico, with 200-hPa geopotential heights among the lowest in the reanalysis historical record (1948 to present). A tropopause fold on the west side of the cutoff low transported O-3-rich air from the stratosphere into the troposphere and resulted in high O-3 concentrations all the way to the surface. The stratospheric intrusion began on 09 March and ended on 12 March, but surface O-3 concentrations continued to rise, peaking on 14 March. Given the deep boundary layer observed on 12 March, it is very likely that remnants of the stratospheric O-3 in the midtroposphere at the regional level could have been entrained into the boundary layer. Furthermore, our analysis indicates that as the cutoff low progressed eastward, the pronounced low-level thermal inversion and reduced ventilation observed on subsequent days (13-15 March) contributed to elevated concentrations of O-3 precursors, which together with strong UV radiation, led to efficient photochemical production of O-3 and to the very large values observed in several of the monitoring stations (up to 210 parts per billion on 14 March). Finally, mitigation measures put into place by authorities reduced both the number of vehicles on the road and the resulting nighttime titration, possibly extending the duration of dangerous O-3 levels in the city. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000469071400029 |
WOS关键词 | BOUNDARY-LAYER EVOLUTION ; AIR-QUALITY ; TROPOPAUSE FOLDS ; GLOBAL CLIMATOLOGY ; POLLUTION ; EXCHANGE ; IMPACT ; INTRUSIONS ; TRANSPORT ; ASSOCIATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182485 |
专题 | 气候变化 |
作者单位 | 1.US Naval Acad, Oceanog Dept, Annapolis, MD 21402 USA; 2.Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City, DF, Mexico; 3.Secretaria Medio Ambiente Dist Fed, Direcc Monitereo Atmosfer, Mexico City, Mexico |
推荐引用方式 GB/T 7714 | Barrett, Bradford S.,Raga, Graciela B.,Retama, Armando,et al. A Multiscale Analysis of the Tropospheric and Stratospheric Mechanisms Leading to the March 2016 Extreme Surface Ozone Event in Mexico City[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(8):4782-4799. |
APA | Barrett, Bradford S.,Raga, Graciela B.,Retama, Armando,&Leonard, Christopher.(2019).A Multiscale Analysis of the Tropospheric and Stratospheric Mechanisms Leading to the March 2016 Extreme Surface Ozone Event in Mexico City.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(8),4782-4799. |
MLA | Barrett, Bradford S.,et al."A Multiscale Analysis of the Tropospheric and Stratospheric Mechanisms Leading to the March 2016 Extreme Surface Ozone Event in Mexico City".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.8(2019):4782-4799. |
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