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Flash Flood Simulation over Egypt using RegCM3 - It works_

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Flash Flood Simulation over Egypt using RegCM3 - It works_ Powered By Docstoc
					                      Flash Flood
                  Simulation over Egypt
                     using RegCM3


Dr. H. Hasanean       Abdel Tawab Shalaby   Bakr A.M. Badawy
                      Objective




• The aim of the work to simulate the flash flood of
  November 1-2,1994, and study the ability of the
  RegCM3 to describe the sever mesoscale
  process responsible for development of the
  unusually intensive Storm of November 1-2, 1994
                Model Setup
• Domain Area:
  – (20° W to 45° E & 15° S to 40° N) cover Egypt Area
• Case Study:
  – Flash Flood Event ( 1,2 November 1994 )
• Two Simulations:,
  – 40 km Resolution
  – 60 Km Resolution
• Different Convective and Cumulus Schemes:
  –   Arakawa-Schubert & Anthes-Kuo
  –   Arakawa-Schubert & Scheme Grell
  –   Fritsch-Chappell & Anthes-Kuo
  –   Fritsch-Chappell & Scheme Grell
                           SLP_Obs. 01/11/1994

  Synoptic Situation




Precipitation 01/11/1994




                           Z500_Obs. 01/11/1994
                           SLP_Obs. 02/11/1994

  Synoptic Situation




Precipitation 02/11/1994




                           Z500_Obs. 02/11/1994
Arakawa-Schubert Convective Scheme & Anthes-Kuo Cumulus Scheme
     dx= 40 Km                           dx= 60 Km
Arakawa-Schubert Convective Scheme & Grell Cumulus Scheme
  dx= 40 Km                            dx= 60 Km
Fritsch-Chappell Convective Scheme & Anthes-Kuo Cumulus Scheme
    dx= 40 Km                             dx= 60 Km
Fritsch-Chappell Convective Scheme & Grell Cumulus Scheme
 dx= 40 Km                             dx= 60 Km
               Summary & Conclusions

                    Run 1         Run 2         Run 3         Run 4

Cumulus Scheme     Anthes-Kuo   Scheme Grell   Anthes-Kuo   Scheme Grell

                    Arakawa-     Arakawa-       Fritsch-      Fritsch-
Covective Scheme    Schubert     Schubert       Chappell      Chappell

          01/11       ≈             ≈            <<             >
 40 km
          02/11       ≈             >             >             ≈
          01/11      <<             <            <<             ≈
 60 km
          02/11       ≈             ≈             ≈             ≈

				
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posted:4/19/2013
language:English
pages:11