Statistical analysis and a case study of tropical cyclones that trigger the onset of the South China Sea summer monsoon

Huangfu, Jingliang; Huang, Ronghui; Chen, Wen

doi:10.1038/s41598-017-13128-2

Cited by 27 publications

(19 citation statements)

References 29 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On intraseasonal timescale, the Madden-Julian Oscillation (MJO) and its northward propagation (Li et al, 2019;Lin et al, 2016;Straub et al, 2006) and the quasi-biweekly (i.e., 10-20 day) oscillation (Keshavamurty, 1972;Wang et al, 2016) can modulate the year-to-year onset time of the SCSSM. On synoptic timescale, both case study and statistical analysis suggest that the tropical cyclones (TCs) over the SCS and western Pacific are able to affect the onset process of the SCSSM (Huangfu et al, 2017;Kajikawa & Wang, 2012;Kubota et al, 2017;Mao & Wu, 2008). In addition, the fronts at midlatitude and high-latitude and wave trains also show their influences on the onset of the SCSSM (Ding et al, 2018;Huangfu et al, 2018;Tong et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Boosting Effect of Tropical Cyclone “Fani” on the Onset of the South China Sea Summer Monsoon in 2019

Liu

Zhu

2020

JGR Atmospheres

View full text Add to dashboard Cite

The late onset of the South China Sea (SCS) summer monsoon (SCSSM) has traditionally been attributed to El Niño events. However, the SCSSM built up around Pentad 26 in 2019, which was 10 days earlier than expected following the 2018/2019 El Niño event. The present study showed that the early onset of the SCSSM in 2019 could be ascribed to tropical cyclone (TC) Fani over the Bay of Bengal (BOB) from 27 April to 3 May 2019. Before the landfall in Pentad 24, the anomalous condensation heating released by the TC not only shifted the South Asian High (SAH) northward but also reinforced the upper‐level barotropic trough to the west of the Tibetan Plateau (TP) at midlatitudes. This phenomenon facilitated the early establishment of monsoon convection by intensifying the upper‐level pumping over the SCS. In addition, the TC carried abundant moisture to the eastern TP and the SCS when it landed in eastern India in Pentad 25 and strengthened the local rainfall in front of the deeper midlatitudinal trough in the upper troposphere over the TP, which in turn released more condensation heating to warm the tropospheric atmosphere. Afterwards, this warmer air advected downstream to the north of the SCS by the basic flow, resulting in the further northward shift of the SAH and the stronger monsoon onset convection over the SCS. Such an upscaling effect of the TC prevented the onset time of the 2019 SCSSM from being accurately forecasted by the ECMWF S2S model.

show abstract

Section: Introductionmentioning

confidence: 99%

Boosting Effect of Tropical Cyclone “Fani” on the Onset of the South China Sea Summer Monsoon in 2019

Liu

Zhu

2020

JGR Atmospheres

View full text Add to dashboard Cite

show abstract

“…As an important part of the EASM (Wang et al 2004), the variability and mechanism of the South China Sea summer monsoon (SCSSM) have been widely investigated based on datasets from the South China Sea Monsoon Experiment (SCSMEX) (Mao and Chan 2005, Zhou and Chan 2005, Wang et al 2009, Ding et al 2015, Huangfu et al 2017a, 2017b. For example, previous studies found a close connection between the thermal state of the tropical western Pacific and the onset date of the SCSSM from intraseasonal to interdecadal time scales (Huang et al 2006, Wang et al 2009, Huangfu et al 2015.…”

Section: Introductionmentioning

confidence: 99%

An interdecadal extension of the Indo-Pacific warm pool and its strengthened influence on the South China Sea summer monsoon since the late 1980s

Yin

Huangfu

Zhou

2020

Environ. Res. Lett.

Self Cite

View full text Add to dashboard Cite

In this study, the interdecadal change in the size of the Indo-Pacific warm pool (IPWP) and its connection with the intensity of the South China Sea summer monsoon (SCSSM) in May are investigated. The results show that the size of the IPWP experienced a marked interdecadal extension in the late 1980s, and its impacts on the SCSSM have also strengthened. Further analyses indicate that interdecadal changes in the connection between the IPWP and SCSSM variations are related to the changes in the atmospheric circulation anomalies over the tropical western Pacific due to the size of the IPWP. During 1951-1986, the IPWP was smaller than the climatologic size, which led to suppressed convection over the tropical western Pacific and easterly anomalies north of the equator. The Philippines and South China Sea (SCS) region was controlled by anomalous anticyclonic circulation, which was not conducive to the formation and development of the SCSSM. In contrast, during 1987-2018, the IPWP expanded significantly eastward. As a response to the IPWP size extension, convective activities were enhanced over the tropical western Pacific. Anomalous cyclonic circulation was located over the Philippines and SCS regions, which favored the enhancement of the SCSSM through wide westerly flow in the Bay of Bengal and tropical western Pacific. Moreover, it is shown that the interdecadally enhanced intraseasonal oscillations (ISOs) over the tropical western Pacific in the late 1980s also favored reinforcement of the SCSSM intensity.

show abstract

“…() calculated the “steering flow” as the mass‐weighted mean wind averaged within a radius of 440 km (4° latitudes) between 850 and 300 hPa to explain the movement of Typhoon Morakot (0908). This approach was shown to be effective in studying the moving paths of TCs (Huangfu et al , ).…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanism for the evolution and rapid intensification of Typhoon Hato (2017)

Ren-wen

Huangfu

Hu³

2019

Atmospheric Science Letters

Self Cite

View full text Add to dashboard Cite

This study investigated the evolution of Typhoon Hato (1713) and analyzed the inner dynamics of its rapid intensification. The moving path of Hato was controlled by the southwestern part of the western Pacific subtropical high which extended westward significantly. Due to a relatively steady leading steering flow, the trajectory of Hato showed a straight ESE to WNW direction, leading to disastrous rainfall in southern Guangdong Province on 23 August before and after the landfall of the typhoon. In addition, Typhoon Hato exhibited a rapid intensification period from 3 to 13 o'clock on 23 August, with central wind speeds increasing from 35 to 48 m/s. This study mainly examined the inner dynamics of the development of Hato, especially its rapid intensification period. The regression analysis results showed that Hato was generated and developed under a TD‐type‐like wave. The coupled convection and vortex provided a favorable environment for the development of Hato. The analysis of the barotropic eddy kinetic energy (EKE) and latent heat flux further demonstrated this scenario. The results showed that the regions with a positive EKE tendency and strong latent heat release were consistent with the reach of and shifted westward with Hato. The EKE conversion was enhanced significantly on 23 August, with a maximum intensity observed over the northern South China Sea and southern Guangdong Province. The mean kinetic energy was largely converted to EKE, which, together with the great latent heat release, led to the rapid intensification of Hato.

show abstract

Statistical analysis and a case study of tropical cyclones that trigger the onset of the South China Sea summer monsoon

Cited by 27 publications

References 29 publications

Boosting Effect of Tropical Cyclone “Fani” on the Onset of the South China Sea Summer Monsoon in 2019

Boosting Effect of Tropical Cyclone “Fani” on the Onset of the South China Sea Summer Monsoon in 2019

An interdecadal extension of the Indo-Pacific warm pool and its strengthened influence on the South China Sea summer monsoon since the late 1980s

Dynamic mechanism for the evolution and rapid intensification of Typhoon Hato (2017)

Contact Info

Product

Resources

About