An interdecadal change in the interannual variability of boreal summer tropical cyclone genesis frequency over the western North Pacific around the early 1990s

An interdecadal change in the interannual variability of boreal summer tropical cyclone genesis frequency over the western North Pacific around the early 1990s
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1990年代初期北太平洋西部夏季热带气旋发生频率的年代际变化

DOI:
10.1007/s00704-018-2710-3
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发表时间:
2018-11
影响因子:
3.4
通讯作者:
Chen Dong
Chen Dong
中科院分区:
地球科学3区
文献类型:
--
作者:
Yong Liu;Chen Dong

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研究表明,20世纪90年代初,西北太平洋热带气旋(TC)生成频率(TCGF)的年际变化具有明显的年代际特征,表现为TC总数(TCN)的周期性和标准差减小,以及西北太平洋TC生成位置的移动。这种年代际变化主要与热带印度洋-太平洋(TIPO)海表温度异常(SSTA)的单个模态和组合模态影响的变化有关。结果表明,在20世纪90年代初以前,热带太平洋的类La Niña海表温度异常对西北太平洋热带气旋环流的年际变化有着重要的影响,通过触发西北太平洋东南部的异常反气旋和西北部的异常气旋,导致西北太平洋热带气旋环流的纬向偶极子结构。自20世纪90年代初以来,西北太平洋热带气旋的年际变化主要是热带印度洋(TIO)的印度洋海盆模态(IOBM)和热带太平洋的类厄尔尼诺(El Niño Modoki)海表温度异常的影响,它们分别通过Rossby波型和Kelvin波型响应在西北太平洋上空诱发异常气旋。此外,TIO中的IOBM SSTA在近期对WNP TCGF年际变化的影响中起主导作用。这些结果还表明,在WNP的TCGF和印度-太平洋SSTA之间的关系的年代际变化,这可能提供了一个很好的启示,在WNP的TC活动的季节性预测。
This study presents an interdecadal change in the interannual variability of the tropical cyclone (TC) genesis frequency (TCGF) over the western North Pacific (WNP) around the early 1990s, which is characterized by decreasing in the periodicity and standard deviation of the total TC number (TCN) and shifting in genesis location of the TC over the WNP. This interdecadal change is largely associated with the changes in the impacts of the individual and combined modes of the sea surface temperature anomalies (SSTAs) in tropical Indo-Pacific Ocean (TIPO). Results indicate that prior to the early 1990s, the interannual variability of the WNP TCGF is closely influenced by the La Niña-like SSTAs in the tropical Pacific Ocean (TPO), which leads to a zonally dipole structure in the WNP TCGF by triggering an anomalous anticyclone over the southeastern WNP and an anomalous cyclone over the northwestern WNP. Since the early 1990s, the interannual variability of the WNP TCGF is attributed to the impacts of the Indian Ocean Basin mode (IOBM) SSTAs in the tropical Indian Ocean (TIO) and the El Niño Modoki-like SSTAs in the TPO, which may work individually and jointly by inducing an anomalous cyclone over the WNP through a Rossby wave-type and a Kelvin wave-type response, respectively. In addition, the IOBM SSTAs in the TIO play a leading role in the impacts on the interannual variability of the WNP TCGF during the recent period. These results also indicate an interdecadal change in the relationship between the TCGF over the WNP and the Indo-Pacific SSTAs, which may provide a good implication for seasonal prediction of the TC activity over the WNP.
Lepage检验检测中国东部夏季降水的年代际变化
DOI: 10.1007/s00704-011-0442-8
发表时间: 2011-05
期刊: Theor Appl Climatol2011
影响因子: --
作者:
Gang Huang;Yong Liu;Ronghui Huang
通讯作者: Ronghui Huang
DOI: 10.1002/joc.5938
发表时间: 2019
期刊: International Journal of Climatology
影响因子: --
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20世纪90年代初以来ENSO Modoki对北太平洋西部夏季热带气旋生成的影响加剧
DOI: 10.1002/joc.5347
发表时间: 2018-04
期刊: International Journal of Climatology
影响因子: --
作者:
Liu Yong;Chen Guanghua
通讯作者: Chen Guanghua
DOI: 10.1002/grl.50171
发表时间: 2013-02
影响因子: 5.2
作者:
Lei Wang;Rong-hui Huang;R. Wu
通讯作者: Lei Wang;Rong-hui Huang;R. Wu