TY  - JOUR
AU  - Lemmen, C.
AU  - Müller, M.
AU  - Konopka, Paul
AU  - Dameris, M.
TI  - Critique of the tracer-tracer correlation technique and its potential to analyze polar chemical O3 loss in chemistry-climate models
JO  - Journal of Geophysical Research
VL  - 111
SN  - 0148-0227
CY  - Washington, DC
PB  - Union
M1  - PreJuSER-47480
SP  - D18307
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - The tracer- tracer correlation technique ( TRAC) has been widely employed to infer chemical ozone loss from observations. Yet, its applicability to chemistry- climate model ( CCM) data is disputed. Here, we report the successful application of TRAC on the results of a CCM simulation. By comparing TRAC- calculated ozone loss to ozone loss derived with the passive ozone method in a chemistry transport model we differentiate effects of internal mixing and cross vortex boundary mixing on a TRAC reference correlation. As a test case, we consider results of a cold Arctic winter/ spring episode from an E39/ C experiment, where typical features, for example, sufficient polar stratospheric cloud formation potential, denitrification and dehydration, and intermittent and final stratospheric warming events, are simulated. We find that internal mixing does not impact the TRAC- derived reference correlation at all. Mixing across the vortex boundary would lead to an underestimation of ozone loss by similar to 10% when calculated with TRAC. We provide arguments that TRAC is a consistent and conservative method to derive chemical ozone loss and can be used to extract its chemical signature also from CCM simulations. As a consequence, we will be able to provide a lower bound for chemical ozone loss for model simulations where a passive ozone tracer is not available.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000240945700002
DO  - DOI:10.1029/2006JD007298
UR  - https://juser.fz-juelich.de/record/47480
ER  -