Air-sea exchange of semivolatile organic compounds – wind and/or sea surface temperature control of volatilisation studied using a coupled general circulation model

Investor logo

Warning

This publication doesn't include Faculty of Arts. It includes Faculty of Science. Official publication website can be found on muni.cz.
Authors

STEMMLER I. LAMMEL Gerhard

Year of publication 2011
Type Article in Periodical
Magazine / Source Journal of Marine Systems
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1016/j.jmarsys.2010.11.002
Field Air pollution and control
Keywords Air-sea exchange; Volatilisation; Semivolatile organic compounds; Climate parameters
Description The global multicompartment chemistry-transport model MPI-MCTM is used to determine the sensitivity of volatilisation of dichlorodiphenyltrichlorethan (DDT) and dichlorodiphenyldichloroethylene (DDE) to SST and wind speed changes. Parameters controlling the volatilisation of DDT from the ocean surface, none of them independent, and their degree of control are identified and mapped by a correlation analysis on the seasonal time scale and by an empirical orthogonal functions (EOF) analysis on the inter-annual timescale. Seasonal variations of volatilisation are shown to be controlled by either wind speed or SST in different sea regions. On this time scale wind is more dominant than SST in the global ocean. The main pattern of inter-annual variability (up to decades), however, is shown to be explained by SST. The results suggest that large-scale spatial averaging, including zonally averaging leads to underestimates of the volatilisation rate and the long-range transport potential of SOCs.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.