Publication Abstracts

Alonso-Pérez et al. 2011

Alonso-Pérez, S., E. Cuevas, C. Pérez, X. Querol, J.M. Baldasano, R. Draxler, and J.J. De Bustos, 2011: Trend changes of African airmass intrusions in the marine boundary layer over the subtropical eastern North Atlantic region in winter. Tellus B, 63, 255-265, doi:10.1111/j.1600-0889.2010.00524.x.

African dust intrusions in the marine mixing layer of the Eastern North Atlantic subtropical region (23.5°N to 35°N) are favoured in winter when the eastern edge of the Azores High covers South-western Europe and North Africa. In situ ground pressure observations and reanalysis from NCEP/NCAR and ECMWF indicate that the Azores High has strengthened and shifted eastward in winter over the last three decades. This is evidenced by the increase over time of the Madrid-Tenerife Index which is defined as the geopotential height anomaly difference at 1000 hPa between Tenerife (28.5°N; 16.3°W) and Madrid (40.5°N; 3.5°W) in winter, and the African Index which is defined as the residence time over Africa of air mass trajectories entering the subtropical Eastern North Atlantic Ocean. BSC-DREAM dust regional model simulations from 1958 through 2006 were performed, assuming that the soil characteristics of dust sources remained unchanged over time. Simulated winter dust concentration levels are well correlated (0.67) with the available background observations for the 1998-2004 period. The model results show a two-fold increase in winter dust concentrations over the 1980-2006 period with respect to the 1958-1979 period, corresponding to the strengthening and eastward shift of the Azores High.

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BibTeX Citation

@article{al05400j,
  author={Alonso-Pérez, S. and Cuevas, E. and Pérez, C. and Querol, X. and Baldasano, J. M. and Draxler, R. and De Bustos, J. J.},
  title={Trend changes of African airmass intrusions in the marine boundary layer over the subtropical eastern North Atlantic region in winter},
  year={2011},
  journal={Tellus B},
  volume={63},
  pages={255--265},
  doi={10.1111/j.1600-0889.2010.00524.x},
}

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RIS Citation

TY  - JOUR
ID  - al05400j
AU  - Alonso-Pérez, S.
AU  - Cuevas, E.
AU  - Pérez, C.
AU  - Querol, X.
AU  - Baldasano, J. M.
AU  - Draxler, R.
AU  - De Bustos, J. J.
PY  - 2011
TI  - Trend changes of African airmass intrusions in the marine boundary layer over the subtropical eastern North Atlantic region in winter
JA  - Tellus B
VL  - 63
SP  - 255
EP  - 265
DO  - 10.1111/j.1600-0889.2010.00524.x
ER  -

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