孟加拉湾热力结构及其对海气相互作用的影响
文献类型：学位论文
| 作者 | GAYAN PATHIRANA ULLALA PATHIRANAGE |
| 答辩日期 | 2019 |
| 授予单位 | 南海海洋研究所 |
| 导师 | 王东晓 |
| 关键词 | 障碍层，垂向热通量，逆温层，春季小型暖池，热带气旋, 孟加拉湾 |
| 学位名称 | 硕士 |
| 学位专业 | 物理海洋学 |
| 其他题名 | Thermal situation in the Bay of Bengal and its consequences on the air-sea interaction |
| 英文摘要 | Seasonal mixed-layer heat budget and the role of spring mini-warm pool on tropical cyclone intensity change in the Bay of Bengal (BoB) are examined utilizing observations from the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA) moorings with other supplementary data sources. This study has been conducted as two parts, Part I: effect of seasonal barrier-layer (BL) on mixed-layer heat budget in the BoB; Part II: effect of spring mini-warm pool (MWP) on tropical cyclone (TC) intensity change in the BoB. It is noted in the results (Part I) that the mixed-layer temperature tendency is primarily controlled by the net surface heat flux from March to October, while both and vertical heat flux at the base of the mixed-layer estimated as the residual of the mixed-layer heat budget dominates during winter (November – February). The BL significantly negatively correlates with mixed-layer temperature and it is found that when BL thickness ≥ 25 m, it exerts a considerable influence on through the modulation of (warming) in the BoB. The cooling associated with is strongest when BL thickness is ≤ 10 m with exceeding 28.5° C, while the contribution from remains nearly zero when BL thickness varies between 15 – 25 m. Temperature inversions are evident north of 10° N latitude in the BoB during winter, when BL thickness remains ≥ 25 m with an average < 28.5°C. In Part II, two TC events (TC Maarutha and TC Mora) during spring 2017 have been selected as case studies in order to examine the effect of spring MWP comparatively. After analyzing major influencing parameters depend we show that though the TC-induced sea surface temperature (SST) cooling is evident during spring, the effect of SST cooling on the intensity change of TCs differs with the development stage of the spring MWP in the BoB. Further, we show that during times when the spring MWP is strong (SST > 31°C), TC-induced mixing does not have any major influence on removing the TC energy |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18082]  |
| 专题 | 南海海洋研究所_学位论文（硕士） |
| 推荐引用方式 GB/T 7714 | GAYAN PATHIRANA ULLALA PATHIRANAGE. 孟加拉湾热力结构及其对海气相互作用的影响[D]. 南海海洋研究所. 2019. |
入库方式： OAI收割
来源：南海海洋研究所
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