TY  - JOUR
AU  - Lemmen, C.
AU  - Dameris, M.
AU  - Müller, R.
AU  - Riese, M.
TI  - Chemical ozone loss in a chemistry-climate model from 1960 to 1999
JO  - Geophysical research letters
VL  - 33
SN  - 0094-8276
CY  - Washington, DC
PB  - American Geophysical Union
M1  - PreJuSER-52292
SP  - L15820
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - In the recent WMO assessment of ozone depletion, the minimum ozone column is used to assess the evolution of the polar ozone layer simulated in several chemistry-climate models (CCMs). The ozone column may be strongly influenced by changes in transport and is therefore not well-suited to identify changes in chemistry. The quantification of chemical ozone depletion can be achieved with tracer-tracer correlations (TRAC). For forty Antarctic winters ( 1960 - 1999), we present the seasonal chemical depletion simulated with the ECHAM4. L39(DLR)/CHEM model. Analyzing methane - ozone correlations, we find a mean chemical ozone loss of 80 +/- 10 DU during the 1990s, with a maximum of 94 DU. Compared to ozone loss deduced from HALOE measurements the model underestimates chemical loss by 37%. The average multidecadal trend in loss from 1960 to 1999 is 17 +/- 3 DU per decade. The largest contribution to this trend comes from the 62 +/- 11 DU ozone loss increase between the 1970s and 1990s.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000239786500007
DO  - DOI:10.1029/2006GL026939
UR  - https://juser.fz-juelich.de/record/52292
ER  -