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by Chiriaco, M., Bastin, S., Yiou, P., Haeffelin, M., Dupont, J.-C. and Stéfanon, M.
Abstract:
July 2006 was particularly warm in Europe. The consistency of this kind of anomaly with large-scale circulation conditions or local processes is a key issue for regional climate evolution. Using observations from space and ground-based observatory, together with simulations from regional model, shows that two concomitant but disconnected drivers explain this heatwave. The first driver corresponds to large-scale conditions (specific atmospheric condition with advection of continental air favoring clear sky). The second condition relates to local processes (dry soil, amplifying surface temperature in heatwave for first 5 days, and making this event warm enough to induce a monthly mean anomaly). This large-scale event is studied at a site in northern France, where comprehensive observation data carefully reanalyzed are available. A regional model is able to produce the amplitude of the event, for both temperature and cloud large-scale anomalies. Coupling model and observations allow discriminating the surface contribution to the temperature anomaly.
Reference:
Chiriaco, M., Bastin, S., Yiou, P., Haeffelin, M., Dupont, J.-C. and Stéfanon, M., 2014: European heatwave in July 2006: Observations and modeling showing how local processes amplify conducive large-scale conditionsGeophysical Research Letters, 41, 5644-5652.
Bibtex Entry:
@Article{Chiriaco2014,
  Title                    = {European heatwave in July 2006: Observations and modeling showing how local processes amplify conducive large-scale conditions},
  Author                   = {Chiriaco, M. and Bastin, S. and Yiou, P. and Haeffelin, M. and Dupont, J.-C. and Stéfanon, M.},
  Journal                  = {Geophysical Research Letters},
  Year                     = {2014},

  Month                    = {August},
  Number                   = {15},
  Pages                    = {5644-5652},
  Volume                   = {41},

  Abstract                 = {July 2006 was particularly warm in Europe. The consistency of this kind of anomaly with large-scale circulation conditions or local processes is a key issue for regional climate evolution. Using observations from space and ground-based observatory, together with simulations from regional model, shows that two concomitant but disconnected drivers explain this heatwave. The first driver corresponds to large-scale conditions (specific atmospheric condition with advection of continental air favoring clear sky). The second condition relates to local processes (dry soil, amplifying surface temperature in heatwave for first 5 days, and making this event warm enough to induce a monthly mean anomaly). This large-scale event is studied at a site in northern France, where comprehensive observation data carefully reanalyzed are available. A regional model is able to produce the amplitude of the event, for both temperature and cloud large-scale anomalies. Coupling model and observations allow discriminating the surface contribution to the temperature anomaly.},
  Copublication            = {6: 6 Fr},
  Doi                      = {10.1002/2014GL060205},
  ISSN                     = {1944-8007},
  Keywords                 = {heatwave, supersites, analogs of circulation, mesoscale model},
  Owner                    = {hymexw},
  Timestamp                = {2016.01.07},
  Url                      = {http://dx.doi.org/10.1002/2014GL060205}
}