Publication Abstracts

Otterman et al. 2003

Otterman, J., R. Atlas, G.L. Russell, and H. Saaroni, 2003: Impact on regional winter climate by CO2 increases vs. by maritime-air advection. Geophys. Res. Lett., 30, 1822, doi:10.1029/2003GL017545.

Fractional Outgoing Radiation, FOR (dimensionless), defined as the ratio of Outgoing Longwave Radiation, OLR (W/m2), to upward Surface Longwave Emission, SLE (W/m2), is a basic parameter for analyzing regional greenhouse effect. Here, FOR values are derived from a General Circulation Model by extracting OLR and SLE over areas in east-central Europe (at about 60°N) one hour after injecting appropriate CO2 concentration (adjustments to the atmospheric profile are thus excluded) to the Feb. 1 midnight simulation. The reduction in FOR is 0.00051 when atmospheric CO2 increases by 14 ppm, which is the currently expected per-decade increase. Fluctuations in the North-Atlantic surface winds produce fluctuations in FOR over central Europe: monthly-mean FOR in strong-wind February 1990 was 0.679, but 0.758 in weak-wind, lower cloud-fraction February 1996. Strong maritime-air advection in 1990 resulted thus in FOR reduced by 0.079, effect by two orders-of-magnitude stronger than the decrease effected by the per-decade increase in CO2.

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BibTeX Citation

@article{ot02000x,
  author={Otterman, J. and Atlas, R. and Russell, G. L. and Saaroni, H.},
  title={Impact on regional winter climate by CO2 increases vs. by maritime-air advection},
  year={2003},
  journal={Geophys. Res. Lett.},
  volume={30},
  pages={1822},
  doi={10.1029/2003GL017545},
}

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RIS Citation

TY  - JOUR
ID  - ot02000x
AU  - Otterman, J.
AU  - Atlas, R.
AU  - Russell, G. L.
AU  - Saaroni, H.
PY  - 2003
TI  - Impact on regional winter climate by CO2 increases vs. by maritime-air advection
JA  - Geophys. Res. Lett.
VL  - 30
SP  - 1822
DO  - 10.1029/2003GL017545
ER  -

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