Dissertation > Excellent graduate degree dissertation topics show

Influence of the Cross-equatorial Flows and Australian High on South China Sea Summer Monsoon Onset

Author: WangPing
Tutor: LiuXuanFei
School: Nanjing University of Information Engineering
Course: Meteorology
Keywords: SCSSM onset AH establishment CEFs meridional circulation of Eastern Asian temperature difference between sea and land AO ENSO
CLC: P732.7
Type: Master's thesis
Year: 2007
Downloads: 144
Quote: 0
Read: Download Dissertation


The seasonal and interannual relationship of the onset of SCS summer monsoon (SCSSM),cross-equatorial flows(CEFs) in the Eastern Hemisphere and Australian High(AH) are investigated by using the NCEP/NCAR reanalysis data and the monthly mean sea-surface temperature data from UK/GISST of Hadley Center of England.The main results are:(1)In the lower and upper level of the troposphere in the Eastern Hemisphere,the CEFs centers are located in 925hPa and in 150hPa,respectively.The Somali CEF,CEF in 85°E and the South China Sea play crucial roles in the onset of SCSSM.The key period of time that influence the onset of SCSSM is from the 25th to the 29th pentad.The SCSSM onset tends to occur earlier when the three CEIls in the lower level are stronger between the 25th to the 29th pentad,and vice versa.Besides,if the CEF in the SCS region is earlier,the onset of SCSSM is earlier as well, while the other two CEFs are not affected much.Different CEFs act different roles in the onset of SCSSM.(2)The meridional circulation pattern has already changed from summer to winter right before the onset of SCSSM.The pattern change of meridional circulation plays a crucial role in the onset of SCSSM as well.The SCSSM onset tends to occur earlier when the meridional circulation changes earlier,and vice versa. The pattern change of meridional circulation is always before the onset of SCSSM,which indicates that change of meridional circulation has some ability to reflect and forecast the onset of SCSSM.(3)An index is developed to reflect the establishment and strength of AH, AH establishes at the 18th pentad averagely.The CEFs in 85°E and the South China Sea between the 25th to 29th pentad are stronger when AH establishes earlier,and vice versa. The interannual relationship between AH establish dates and SCSSM onset dates is evident.When the AH establish date is earlier (later),the SCSSM onset date is earlier (later).(4)Temperature difference between Australia and the Ocean on its east,AOI and nino4 index in March play a crucial role in the establishment of AH.The AH establishment tends to occur earlier (later) when the temperature difference between sea and land transform from negative to positive earlier (later),AOI in March is weaker (stronger) or Nino4 index is stronger (weaker).

Related Dissertations

  1. Open Reduction and Internal Fixation with the AO Anatomic Plating Systems for Type C Fractures of the Adult Distal Humerus,R687.3
  2. Family the Hezhen ( that is ) the traditional process research,J528
  3. Craniofacial Abnormalities in Zebrafish Induced by Clomiphene Sodium Citrate,R114
  4. Interannual Sea Level Changes in China Marginal Sea and Their Response to ENSO,P731.23
  5. Analysis of Super Typhoon Activity Over Western North Pacific,P444
  6. The Antagonism of Atractylenolide I on Paclitaxel Increasing Interleukin 6(IL-6) Secretion and Chemoresistance in Ovarian Cancer Cell,R737.31
  7. Researxch on Aspect-Oriented Requirements Modeling Based on Separation,TP311.52
  8. The Seasonal and Interannual Features of Ascending Motion in the Intertropical Convergence Zone in the North Pacific,P432
  9. ENSO Impact on Fishing Ground of Yellowfin Tuna(Thunnus Albacares) in the Eastern Pacific Ocean,S931.4
  10. Impact Factor Statistics and Analysis of Saltwater Intrusion in the Pearl River Region,X55
  11. Horizontal wells - vertical wells combined cloth wells tracking adjustment method,TE355.6
  12. Tibetan Buddhist monk system related research,B948
  13. Research on LiAo’s Constitutionalism Theory,D921
  14. Study Upon the Current Social Situation of Horchin Mongol Society from the View of Building the New Socialist Countryside,C912
  15. Traditional Chinese Aesthetic Culture of the Minnan Stone Carving Art of Hui An,J314.3
  16. Synthesis and Properties of Damping Material Based on Polyurethane Elastomers,TQ323.8
  17. Oxidative Stress Induced PC12 Cells Damage: Roles and Mechanisms of Gap Junctional Communication,R363
  18. Borderland-inspection of Aola, a Deputy General of Hulunbuir of Qing Dynasty,K249
  19. Discuss Ao Li Ma Su Rong’s Art of Poetry,I207.25
  20. The Discussion of Comminuted Calcaneal Bone about Plants the Bone,R687.3
  21. Studies on Liao’ Fuxingshu,K242

CLC: > Astronomy,Earth Sciences > Oceanography > Marine basic science > Marine Meteorology > Ocean dynamic meteorology
© 2012 www.DissertationTopic.Net  Mobile