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Science. 1999 Jan 1;283(5398):55-7.

DOAS measurements of tropospheric bromine oxide in mid-latitudes

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K. Hebestreit, J. Stutz, U. Platt, Institut fur Umweltphysik, Ruprecht-Karls-Universitat Heidelberg, Im Neuenheimer Feld 366, D-69120 Heidelberg, Germany. D. Rosen, V. Matveiv, M. Peleg, M. Luria, Environmental Science, School of Applie.


Episodes of elevated bromine oxide (BrO) concentration are known to occur at high latitudes in the Arctic boundary layer and to lead to catalytic destruction of ozone at those latitudes; these events have not been observed at lower latitudes. With the use of differential optical absorption spectroscopy (DOAS), locally high BrO concentrations were observed at mid-latitudes at the Dead Sea, Israel, during spring 1997. Mixing ratios peaked daily at around 80 parts per trillion around noon and were correlated with low boundary-layer ozone mixing ratios.

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