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| NUMERICAL EXPERIMENTS OF EFFECT OF SSTA OVER THE INDIAN OCEAN ON ATMOSPHERIC LOW-FREQUENCY OSCILLATION IN THE EXTRATROPICAL LATITUDE | |
| 作者姓名： | 邱明宇 陆维松 陈汇林 蔡亲波 |
| 作者单位： | Hainan Institute of Meteorological Science / Key Laboratory for Meteorological Disaster Prevention and Mitigation in the South China Sea，Hainan Climate Center Haikou 570203，Department of Atmospheric Sciences Nanjing University of Information，Science and Technology，Hainan Institute of Meteorological Science / Key Laboratory for Meteorological Disaster Prevention and Mitigation in the South China Sea，Hainan Climate Center Haikou 570203，Hainan Institute of Meteorological Science / Key Laboratory for Meteorological Disaster Prevention and Mitigation in the South China Sea，Haikou 570203 China，Nanjing 210044 China，Haikou 570203 China，Haikou 570203 China |
| 基金项目： | 国家自然科学基金;江苏省六大人才高峰基金 |
| 摘 要： | Numerical experiments on forcing dissipation and heating response of dipole (unipole) are carried out using global spectral models with quasi-geostrophic barotropic vorticity equations. For each experiment model integration is run for 90 days on the condition of three-wave quasi-resonance. The results are given as follows: Under the effects of dipole (unipole) forcing source and basic flow intensity, there exist strong interactions among the three planetary waves and quasi-biweekly and intraseasonal oscillation of the three planetary waves. In the meantime, the changes in the intensity of dipole or unipole forcing source and basic flow have different frequency modulation effects on LFO in the middle and higher latitudes. The results of the stream function field of three quasi-resonant waves evolving with time confirm that the low-frequency oscillation exists in extratropical latitude. |
| 关 键 词： | 印度洋 偶极 陆地气候 海洋气候 |
NUMERICAL EXPERIMENTS OF EFFECT OF SSTA OVER THE INDIAN OCEAN ON ATMOSPHERIC LOW-FREQUENCY OSCILLATION IN THE EXTRATROPICAL LATITUDE |
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| QIU Ming-yu,LU Wei-song,CHEN Hui-lin,CAI Qin-bo.NUMERICAL EXPERIMENTS OF EFFECT OF SSTA OVER THE INDIAN OCEAN ON ATMOSPHERIC LOW-FREQUENCY OSCILLATION IN THE EXTRATROPICAL LATITUDE[J].Journal of Tropical Meteorology,2007,13(1):73-76. | |
| Authors: | QIU Ming-yu LU Wei-song CHEN Hui-lin CAI Qin-bo |
| Institution: | 1. Hainan Institute of Meteorological Science / Key Laboratory for Meteorological Disaster Prevention and Mitigation in the South China Sea, Haikou 570203 China;Hainan Climate Center, Haikou 570203 2. Department of Atmospheric Sciences, Nanjing University of Information, Science and Technology, Nanjing 210044 China 3. Hainan Institute of Meteorological Science / Key Laboratory for Meteorological Disaster Prevention and Mitigation in the South China Sea, Haikou 570203 China |
| Abstract: | Numerical experiments on forcing dissipation and heating response of dipole (unipole) are carried out using global spectral models with quasi-geostrophic barotropic vorticity equations. For each experiment model integration is run for 90 days on the condition of three-wave quasi-resonance. The results are given as follows: Under the effects of dipole (unipole) forcing source and basic flow intensity, there exist strong interactions among the three planetary waves and quasi-biweekly and intraseasonal oscillation of the three planetary waves. In the meantime, the changes in the intensity of dipole or unipole forcing source and basic flow have different frequency modulation effects on LFO in the middle and higher latitudes. The results of the stream function field of three quasi-resonant waves evolving with time confirm that the low-frequency oscillation exists in extratropical latitude. |
| Keywords: | Indian Ocean temperature dipole (unipole) frequency modulation waves quasi- resonance atmospheric low-frequency oscillation |
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