Theoretical and Applied Climatology

, Volume 130, Issue 1–2, pp 173–189 | Cite as

Future projections of synoptic weather types over the Arabian Peninsula during the twenty-first century using an ensemble of CMIP5 models

  • Ahmed M. El KenawyEmail author
  • Matthew F. McCabe
Original Paper


An assessment of future change in synoptic conditions over the Arabian Peninsula throughout the twenty-first century was performed using 20 climate models from the Coupled Model Intercomparison Project Phase 5 (CMIP5) database. We employed the mean sea level pressure (SLP) data from model output together with NCEP/NCAR reanalysis data and compared the relevant circulation types produced by the Lamb classification scheme for the base period 1975–2000. Overall, model results illustrated good agreement with the reanalysis, albeit with a tendency to underestimate cyclonic (C) and southeasterly (SE) patterns and to overestimate anticyclones and directional flows. We also investigated future projections for each circulation-type during the rainy season (December–May) using three Representative Concentration Pathways (RCPs), comprising RCP2.6, RCP4.5, and RCP8.5. Overall, two scenarios (RCP4.5 and RCP 8.5) revealed a statistically significant increase in weather types favoring above normal rainfall in the region (e.g., C and E-types). In contrast, weather types associated with lower amounts of rainfall (e.g., anticyclones) are projected to decrease in winter but increase in spring. For all scenarios, there was consistent agreement on the sign of change (i.e., positive/negative) for the most frequent patterns (e.g., C, SE, E and A-types), whereas the sign was uncertain for less recurrent types (e.g., N, NW, SE, and W). The projected changes in weather type frequencies in the region can be viewed not only as indicators of change in rainfall response but may also be used to inform impact studies pertinent to water resource planning and management, extreme weather analysis, and agricultural production.


Circulation Pattern Ensemble Member Base Period Arabian Peninsula Weather Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST), Saudi Arabia. We wish to thank the various international modeling groups for providing their data through the CMIP5 initiative. We also would like to thank the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, for providing the NCEP reanalysis data.


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  1. 1.Division of Biological and Environmental Sciences and Engineering, Water Desalinaton and Reuse CenterKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
  2. 2.Department of GeographyMansoura UniversityMansouraEgypt

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