Impacts of the Kuroshio intrusion entering the Luzon Strait on the local atmosphere by satellite observations

2018 ◽  
Author(s):  
Zhe-Wen Zheng ◽  
Min-Chuan Weng ◽  
Wen-Pin Fang
Keyword(s):  
Luzon Strait ◽  
Satellite Observations ◽  
Kuroshio Intrusion ◽  
The Kuroshio

scholarly journals Impacts of the Kuroshio Intrusion through the Luzon Strait on the Local Precipitation Anomaly

2021 ◽  
Vol 13 (6) ◽  
pp. 1113
Author(s):  
Wen-Pin Fang ◽  
Ding-Rong Wu ◽  
Zhe-Wen Zheng ◽  
Ganesh Gopalakrishnan ◽  
Chung-Ru Ho ◽  
...  
Keyword(s):  
Kuroshio Current ◽  
Precipitation Anomaly ◽  
Luzon Strait ◽  
Sea Surface ◽  
Research Quality ◽  
Northwestern Pacific ◽  
Kuroshio Intrusion ◽  
Vertical Advection ◽  
Budget Analysis ◽  
The Kuroshio

The Kuroshio Current has its origin in the northwestern Pacific, flowing northward to the east of Taiwan and the northern part of Luzon Island. As the Kuroshio Current flows northward, it quasi-periodically intrudes (hereafter referred to as Kuroshio intrusion (KI)) into the northern South China Sea (SCS) basin through the Luzon Strait. Despite the complex generation mechanisms of KI, the purpose of this study is to improve our understanding of the effects of KI through the Luzon Strait on the regional atmospheric and weather variations. Long-term multiple satellite observations, including absolute dynamic topography, absolute geostrophic currents, sea surface winds by ASCAT, multi-scale ultra-high resolution sea surface temperature (MURSST) level-four analysis, and research-quality three-hourly TRMM multi-satellite precipitation analysis (TMPA), was used to systematically examine the aforementioned scientific problem. Analysis indicates that the KI is interlinked with the consequential anomalous precipitation off southwestern Taiwan. This anomalous precipitation would lead to ~560 million tons of freshwater influx during each KI event. Subsequently, independent moisture budget analysis suggests that moisture, mainly from vertical advection, is the possible source of the precipitation anomaly. Additionally, a bulk formula analysis was applied to understand how KI can trigger the precipitation anomaly through vertical advection of moisture without causing an evident change in the low-level flows. These new research findings might reconcile the divisiveness on why winds are not showing a synchronous response during the KI and consequential anomalous precipitation events.

Weakening of the Kuroshio Intrusion into the South China Sea over the Past Two Decades

2013 ◽  
Vol 26 (20) ◽  
pp. 8097-8110 ◽  
Author(s):  
Feng Nan ◽  
Huijie Xue ◽  
Fei Chai ◽  
Dongxiao Wang ◽  
Fei Yu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Luzon Strait ◽  
The South China Sea ◽  
Negative Trend ◽  
Kuroshio Intrusion ◽  
The South ◽  
China Sea ◽  
The Past ◽  
The Kuroshio

Abstract Inferred from the satellite and in situ hydrographic data from the 1990s and 2000s, the Kuroshio intrusion into the South China Sea (SCS) had a weakening trend over the past two decades. Associated with the weakened Kuroshio intrusion, the Kuroshio loop and eddy activity southwest of Taiwan became weaker, whereas the water above the salinity minimum became less saline in the northern SCS. The sea surface height southwest of Taiwan increased at a slower rate compared to other regions of the SCS because of the weakened Kuroshio intrusion. Simulations using the Regional Ocean Modeling System (ROMS) Pacific model show that the strength of the Kuroshio intrusion into the SCS decreased from 1993 to 2010 with a negative trend, −0.24 sverdrups (Sv) yr−1 (1 Sv ≡ 106 m3 s−1), in the total Luzon Strait transport (LST). Although wind-induced Ekman transport through the Luzon Strait became weaker, the magnitude at 0.001 Sv yr−1 was too small to compensate for the negative trend of the LST. On the other hand, the piling up of the water induced by monsoon winds was an important mechanism for changing the pressure gradient across the Luzon Strait and eventually affecting the LST. The sea level gradient between the western Pacific and the SCS had a negative trend, −0.10 cm yr−1, corresponding to a negative trend in the geostrophic transport at −0.20 Sv yr−1. The Kuroshio transport east of Luzon Island also had a negative trend, which might also be linked to the weakening Kuroshio intrusion.

Influence of island chains on the Kuroshio intrusion in the Luzon Strait

2017 ◽  
Vol 34 (3) ◽  
pp. 397-410 ◽  
Author(s):  
Zhida Huang ◽  
Hailong Liu ◽  
Pengfei Lin ◽  
Jianyu Hu
Keyword(s):  
Luzon Strait ◽  
Kuroshio Intrusion ◽  
The Kuroshio

scholarly journals Variation in the Kuroshio intrusion: Modeling and interpretation of observations collected around the Luzon Strait from July 2009 to March 2011

2014 ◽  
Vol 119 (6) ◽  
pp. 3447-3463 ◽  
Author(s):  
Yaochu Yuan ◽  
Yu-Heng Tseng ◽  
Chenghao Yang ◽  
Guanghong Liao ◽  
Chun Hoe Chow ◽  
...  
Keyword(s):  
Luzon Strait ◽  
Kuroshio Intrusion ◽  
The Kuroshio

Kuroshio intrusion in the Luzon Strait in an eddy-resolving ocean model and air-sea coupled model

2020 ◽  
Vol 39 (11) ◽  
pp. 52-68
Author(s):  
Qian Yang ◽  
Hailong Liu ◽  
Pengfei Lin ◽  
Yiwen Li
Keyword(s):  
Coupled Model ◽  
Ocean Model ◽  
Luzon Strait ◽  
Kuroshio Intrusion
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