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Ozone concentration jump in the stable nocturnal boundary layer during a LLJ-event

Ozone concentration jump in the stable nocturnal boundary layer during a LLJ-event,10.1016/S1352-2310(96)00358-5,Atmospheric Environment,U. Corsmeier,

Ozone concentration jump in the stable nocturnal boundary layer during a LLJ-event   (Citations: 44)
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During the field campaign performed within the SANA-project (readjustment of the atmosphere in the five new federal states of the Federal Republic of Germany) at a flat, rural site in eastern Germany, several cases of a jumplike increase of ozone at the surface under stable conditions during the nights have been observed. The concentration jumps of ozone are on the order of 12 to 23 of the days maximum and the level is significantly higher than under normal conditions with stable stratification. The cases are correlated with an increase in wind speed, wind shear and a downward flux of ozone. Inthe case selected here, the increase in turbulence is caused by the evolution of a low-level jet (LLJ) with the core just above the top of surface inversion. The analysis of wind profile measurements at the aerological stations in north-eastern Germany reveals a spatial extension of the low-level jet of up to 600 km in lenght and 200 km in width. Thus the significance of the LLJ on the transport capability of the atmosphere is twofold: due to the large spatial extent of the LLJ and the high wind speed at the jet core level air pollutants are transported over hundreds of kilometers during one night. Secondly, due to the strong wind shear between the jet core and the ground pollutants can be mixed to the ground far away from the release area.
Journal: Atmospheric Environment - ATMOS ENVIRON , vol. 31, no. 13, pp. 1977-1989, 1997
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    • ...Temporary increases in turbulent downward mixing during stable atmospheric conditions were noticed in connection to studies of nocturnal ozone peaks (Samson 1978; Corsmeier et al. 1997; Strassburger and Kuttler 1998; Reitebuch et al. 2000; Salmond and McKendry 2002; Eliasson et al. 2003)...
    • ...Several of these studies attributed parts of the nocturnal ozone peaks to turbulent downward mixing caused by the evolution of a NLLJ, and noticed that this correlated to a decrease in or breakdown of the stable atmospheric stratification (Corsmeier et al. 1997; Reitebuch et al. 2000; Salmond and McKendry 2002)...
    • ...However, as discussed above, this could also introduce pollutants transported by the NLLJ, such as ozone (Samson 1978; Corsmeier et al. 1997; Strassburger and Kuttler 1998 ;R eitebuch et al.2000; Salmond and McKendry 2002; Eliasson et al. 2003), and, perhaps more important in this region, mineral dust (Washington et al. 2006)...

    Jenny Lindénet al. Thermally induced wind patterns in the Sahelian city of Ouagadougou, B...

    • ...They are also efficient conveyors of lower-tropospheric air pollutants such as ozone and fine particulates, transporting pollutants hundreds of miles over the course of a night (Wilson 1978, Smith et al. 1978, Slinn 1982, Corsmeier et al. 1997, Banta et al. 1998, Seaman and Michelson 2000, Hardesty et al. 2001, Bao et al. 2008)...

    Alan Shapiroet al. Nocturnal low-level jet over a shallow slope

    • ...Nocturnal ozone maxima, observed between midnight and sunrise, have been studied by several authors (Corsmeier et al., 1997; Baumbach and Vogt, 1999; Eliasson et al., 2003)...

    J. C. M. Pireset al. Selection and validation of parameters in multiple linear and principa...

    • ...For example, a full understanding of the downward mixing of sequestered RL pollutants into the SBL (Corsmeier et al. 1997; Reitebuch et al. 2000; Salmond and McKendry 2002) requires an improved knowledge of turbulent transport processes in the RL. Additionally, turbulent mixing at the interface between the RL and the early-morning mixed layer and resulting aerosol nucleation (Nilsson et al. 2001) provides strong motivation for a better ...

    Ben B. Balsleyet al. On the Scale-dependence of the Gradient Richardson Number in the Resid...

    • ...Several studies (Beyrich 1994; Corsmeier et al. 1997; Kalthoff et al. 2000; Reitebuch et al. 2000) have linked the large-scale transport of water vapour and ozone and their nocturnal maxima to LLJ events...

    Thara V. Prabhaet al. Influence of Nocturnal Low-level Jets on Eddy-covariance Fluxes over a...

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