HOx photochemistry in Beijing
نویسنده
چکیده
Introduction Conclusions References
منابع مشابه
Observations of OH, HO2, H2O, and O3 in the upper stratosphere: implications for HOx photochemistry
Balloon-borne observations of concentrations of OH, HO2, H2O, and O3 in the middle and upper stratosphere are used to test our understanding of HOx photochemistry. Assuming our photochemical model is complete, the measured [OH] and [HO2] above 38 km (where HOx partitioning is no longer dependent on [NO]) are modeled best by calculations that use a 25% reduction in the ratio of the reaction rate...
متن کاملInteractive comment on “Nighttime observation and chemistry of HOx in the Pearl River Delta and Beijing in summer 2006” by K. D. Lu et al
The authors discuss three different mechanisms that could explain the observations. These include as yet unknown HOx recycling reactions, similar to that used to explain large daytime concentrations of HOx from the same campaigns; a source of HOx from nighttime ozonolysis reactions of highly reactive biogenic VOCs; and transport of radical reservoirs from a layer aloft to the surface. None of t...
متن کاملVariability in UVB radiation in Beijing, China.
The variation characteristics of Ultraviolet-B (UVB; 280-315 nm) radiation over Beijing were explored using measured data that were collected in Beijing from November 2010 to October 2011. Seasonal variations in UVB radiation and influence of ozone and clearness index on the ratio of UVB to broadband solar radiation (G) were investigated. The annual value of UVB radiation in Beijing is 6.37 MJ ...
متن کاملTropospheric ozone trend over Beijing from 2002–2010: ozonesonde measurements and modeling analysis
Using a combination of ozonesonde data and numerical simulations of the Chemical Lagrangian Model of the Stratosphere (CLaMS), the trend of tropospheric ozone (O3) during 2002–2010 over Beijing was investigated. Tropospheric ozone over Beijing shows a winter minimum and a broad summer maximum with a clear positive trend in the maximum summer ozone concentration over the last decade. The observe...
متن کامل