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Intraseasonal oscillation of tropical convergence zones: Theory and prediction

机译:热带收敛带的季节内振荡:理论与预测

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摘要

The intraseasonal oscillation of Tropical Convergence Zones (TCZ) over the Indo-Pacific region has been studied. Both meridional and zonal propagating modes with timescales of about 40 days are prominent over the Indian and West Pacific regions. The mechanisms governing both these modes are reviewed. It is found that ocean-atmospheric interaction plays an important role in modulating these modes. The role of oceans is further highlighted in a series of seasonal forecasts using a coupled ocean-atmosphere model. It is found that forecasts of intraseasonal oscillations show significant improvement upon assimilation of sub-surface ocean data from the ARGO (a global programme to observe sub-surface profiles in the oceans) array of floats.
机译:已经研究了印度太平洋区域热带收敛带(TCZ)的季节内振荡。在印度和西太平洋地区,时间尺度约为40天的经向和纬向传播模式都很突出。审查了控制这两种模式的机制。发现海洋-大气相互作用在调节这些模式中起重要作用。使用海洋-大气耦合模型在一系列季节预报中进一步强调了海洋的作用。发现季节内振荡的预测表明,同化来自浮游物的ARGO(全球计划,用以观察海洋中的海底剖面的全球程序)的海底海洋数据后,其显着改善。

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