RT Journal Article T1 The effect of heat waves and drought on surface wind circulations in the Northeast of the Iberian Peninsula during the summer of 2003 A1 Jiménez, Pedro A. A1 Vilà-Guerau de Arellano, Jordi A1 González Rouco, Jesús Fidel A1 Navarro, Jorge A1 Montávez, Juan P. A1 García Bustamante, Elena A1 Dudhia, Jimy AB Variations in the diurnal wind pattern associated with heat waves and drought conditions are investigated climatologically at a regional level (northeast of the Iberian Peninsula). The study, based on high-density observational evidence and fine spatial-scale mesoscale modeling for the 1992-2004 period, shows that wind speed can decrease up to 22% under situations characterized by extremely high temperatures and severe drought, such as the European summer of 2003. By examining the role of the different atmospheric scales of motion that determine the wind diurnal variability, it is found that the 2003 synoptic conditions are the main driver for changes in the wind speed field. In turn, these changes are modulated by mesoscale circulations influenced by the soil moisture availability. The results have implications for broad regional modeling studies of current climate and climate change simulations in as much as the study demonstrates that a correct representation of local soil moisture conditions impacts atmospheric circulation and therefore the regional climate state. PB American Meteorological Society SN 0894-8755 YR 2011 FD 2011-10-15 LK https://hdl.handle.net/20.500.14352/44942 UL https://hdl.handle.net/20.500.14352/44942 LA eng NO © 2011 American Meteorological Society. The National Center for Atmospheric Research is sponsored by the National Science Foundation.We thank the Navarra government and the ECMWF for providing us with the datasets used in this study. This investigation was partially supported by Projects CGL-2008-05093/CLI and PSE-120000-2008-9 and was accomplished within the Collaboration Agreement 09/490 between CIEMAT and NCAR as well as the Collaboration Agreement 09/153 between CIEMAT and UCM. We also thank the reviewers for their helpful comments. NO National Science Foundation NO Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), España NO National Center for Atmospheric Research (NCAR), EE.UU. NO Universidad Complutense de Madrid (UCM) DS Docta Complutense RD 11 may 2025