Troposphere halogens

Kaleschke L, Richter A, Burrows J, Afe O, Heygster G, Notholt J, Rankin AM, Roscoe HK, Holl wedel J, Wagner T, Jacobi H-W (2004) Frost Flowers on Sea Ice as a Source of Sea Salt and Their Influence on Tropospheric Halogen Chemistry. Geophys Res Lett 31 L16114... 

Rahn, K.A., Borys, R.D. Duce, R.A. (1976) Tropospheric halogen gases inorganic and organic components. Science, 192, 549-50. 

Case Study VI - The potential effect of tropospheric halogen chemistry on ozone - An example of the potential effect of the ozone depletion cycles (Cycles I and II) can be assessed using data from the MBL. Table 7 lists the rates of ozone depletion (from Cycles I and II) in the first hour after sunrise at Mace Head in Ireland. Measurements of... 

PA. Ariya, Studies of tropospheric halogen chemistry Laboratory and field measurements, PhD... 

Schweitzer F., Mirabel P., and George C. (1999) Heterogeneous chemistry of nitryl halides in relation to tropospheric halogen activation. J. Atmos. Chem. 34, 101 — 117. 

Rahn, K. A., R. D. Borys, and R. A. Duce (1976). Tropospheric halogen gases Inorganic and organic components. Science 192, 549-550. 

Chlorine monoxide CIO, bromine monoxide BrO, and iodine monoxide lO are the main chain carrier of stratospheric and tropospheric halogen chain reactions. CIO is partially photolyzed only in the stratosphere, and the photolytic rates of BrO and lO are large also in the troposphere. Their photolysis rates have to be considered in the evaluation of ozone depleting chain reactions. 

The reactions of N2O5 with sea salt has attracted interest since they are important as a loss process of N2O5 in the marine boundary layer, and also as a trigger for tropospheric halogen chemistry by forming photochemicaUy active CINO2 in the marine boundary layer in urban coasts. 

In the tropospheric halogen chemistry, CIONO2 is a quasi-stable compound formed in the chain termination reaction of CIO in the urban coastal area where NO concentration is relatively high. The reaction of CIONO2 with sea salt results in photochemically active CI2 as in the process. 

The overall tropospheric halogen chemistry has recently been reviewed by Saiz-Lopez and von Glasow (2012). Also, reviews on heterogeneous reactions on sea salt (Finlayson-Pitts 2003 Rossi 2003) and other specific topics of tropospheric halogen chemistry (Carpenter 2003 Sander et al. 2003 Simpson et al. 2007 von Glasow 2010 Abbatt et al. 2012 Saiz-Lopez et al. 2012) are available. 

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