Heterogeneous processing of bromine compounds by atmospheric aerosols: Relation to the ozone budget

Technical Report · Sun Nov 01 04:00:00 EST 1998

DOI:https://doi.org/10.2172/676906· OSTI ID:676906

Robinson, J M; Henson, B F; Dubey, M K; Casson, J L; Johal, M S ^[1]; Wilson, K R ^[2]

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1. Los Alamos National Lab., NM (US)
2. Univ. of California, Berkeley, CA (US)

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The depletion of ozone, particularly above Antarctica, has been investigated extensively to formulate public policy on the use of halocarbons. While it has been shown that heterogeneous reactions of chlorine compounds on stratospheric particulates cause the ozone hole, little is known of the analogous bromine mechanisms, even though it has been recognized for two decades that catalytic destruction of ozone by bromine could be more efficient than chlorine. Furthermore, field measurements and modeling calculations suggest that these heterogeneous (gas/surface) reactions are not restricted to the Antarctic regions but occur globally. The authors have performed laboratory measurements of the uptake of bromine compounds and other halogens on simulated stratospheric aerosols to help elucidate their role in catalytic ozone destruction cycles. Their studies contribute to the data base required to make assessments of the effects of human activities on global change, including the Montreal Protocol.

• Research Organization: Los Alamos National Lab., NM (US)
• Sponsoring Organization: USDOE Assistant Secretary for Management and Administration, Washington, DC (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 676906
• Report Number(s): LA-UR--98-1875; ON: DE99000551
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
54 ENVIRONMENTAL SCIENCES
AEROSOLS
ANTARCTIC REGIONS
ANTARCTICA
BROMINE
BROMINE COMPOUNDS
CHLORINE
CHLORINE COMPOUNDS
HALOGENS
OZONE
PARTICULATES
PROCESSING
PUBLIC POLICY
SIMULATION