Air‐sea interaction between tropical cyclone Nari and Kuroshio

Wu, Chau Ron; Chang, Yu Lin; Oey, Lie Yauw; Chang, C. C.; Hsin, Yi-Chia

doi:10.1029/2008gl033942

Cited by 77 publications

(89 citation statements)

References 14 publications

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“…Moreover, in the SECS, the sediment trap-collected material (e.g., biogenic POC) is less likely to be affected by bottom-sediment re-suspension due to the fact that the bottom (off northeast Taiwan) is mainly composed of rock and coral materials. Even though an upwelling phenomenon (mainly below 150 m) off northeast Taiwan has been reported by Wu et al (2008a), the cold dome in the surface water on the shelf-break in the study area of the SECS has only been intermittently observed in summer (Chern et al 1990;Liu et al 1992;Gong et al 1995;Jan et al 2011).…”

Section: Introductionmentioning

confidence: 76%

Field Observations of Changes in SST, Chlorophyll and POC Flux in the Southern East China Sea Before and After the Passage of Typhoon Jangmi

Shih¹,

Hsieh²,

Gong³

et al. 2013

Terr. Atmos. Ocean. Sci.

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Severe tropical storms play an important role in triggering phytoplankton blooms, yet direct field observation of evidence of the effects of a typhoon is very rare. Sea surface temperature (SST), nitrate concentration, chlorophyll a (chl a) concentration, and particulate organic carbon (POC) flux were measured before and shortly after Typhoon Jangmi which affected the southern East China Sea (SECS) on September 28 ~ 29, 2008. In situ SST (27.5 ~ 28.0°C) on September 19 ~ 21, decreased to ~24.0°C (October 3 ~ 6) in the SECS 4 ~ 7 days after the passage of Typhoon Jangmi. In situ nitrate and chl a concentrations 7-days (on October 6) after the passage of Jangmi were 1.9 μM and 1.61 mg m -3 , respectively, much higher than those (nitrate: 0.3 μM and chl a: 0.73 mg m -3 ) concentrations before the typhoon (September 21). The enhanced chl a concentration is thus caused by a nutrient supply via vertical mixing or upwelling in the euphotic zone. The POC flux 7-days after Jangmi's passage was 552 ± 28 mg-C m -2 d -1 , a ~2.5-fold increases before the typhoon (224 ± 33 mg-C m -2 d -1 , on September 21). Our results suggest that typhoons indeed can stimulate efficient POC export out of the euphotic zone, while it is still poorly understood with regard to the total effects of a typhoon on nutrient dynamics and detailed carbon sequestration due to sampling difficulty. Therefore, successional sea-going observations ought to be conducted in the affected area after the passage of typhoons.

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Section: Introductionmentioning

confidence: 76%

Field Observations of Changes in SST, Chlorophyll and POC Flux in the Southern East China Sea Before and After the Passage of Typhoon Jangmi

Shih¹,

Hsieh²,

Gong³

et al. 2013

Terr. Atmos. Ocean. Sci.

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“…One important response is the decrease of SST due to the strong vertical mixing caused by the typhoon (Price et al, 1994). According to the SST observations from the satellite, SST usually decreases 2-5 • C due to the typhoon passing (Cione and Uhlhorn, 2003;D'Asaro et al, 2007;Wu et al, 2008;Jiang et al, 2009). Dare and McBride (2011) studied the response Figure 10.…”

Section: Typhoon Tembinmentioning

confidence: 99%

Comparison and validation of global and regional ocean forecasting systems for the South China Sea

Zhu

Wang

Liu

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. In this paper, the performance of two operational ocean forecasting systems, the global Mercator Océan (MO) Operational System, developed and maintained by Mercator Océan in France, and the regional South China Sea Operational Forecasting System (SCSOFS), by the National Marine Environmental Forecasting Center (NMEFC) in China, have been examined. Both systems can provide sciencebased nowcast/forecast products of temperature, salinity, water level, and ocean circulations. Comparison and validation of the ocean circulations, the structures of temperature and salinity, and some mesoscale activities, such as ocean fronts, typhoons, and mesoscale eddies, are conducted based on observed satellite and in situ data obtained in 2012 in the South China Sea. The results showed that MO performs better in simulating the ocean circulations and sea surface temperature (SST), and SCSOFS performs better in simulating the structures of temperature and salinity. For the mesoscale activities, the performance of SCSOFS is better than MO in simulating SST fronts and SST decrease during Typhoon Tembin compared with the previous studies and satellite data; but model results from both of SCSOFS and MO show some differences from satellite observations. In conclusion, some recommendations have been proposed for both forecast systems to improve their forecasting performance in the near future based on our comparison and validation.

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“…The Kuroshio intrudes across the shelf break northeast of Taiwan and then affects the circulation in the East China Sea [Chao, 1990]. It also plays a crucial role in air-sea interactions along its mainstream [Wu et al, 2008;Kwon et al, 2010]. Therefore, the study of the Kuroshio has not only regional but also basin wide importance.…”

Section: Introductionmentioning

confidence: 99%

Large variability of the Kuroshio at 23.75°N east of Taiwan

et al. 2015

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Synoptic features of the Kuroshio at 23.75 N were quantified using nine ship-based surveys between September 2012 and September 2014. The new ship-based data set provides an unprecedented view of the Kuroshio east of Taiwan and suggest tremendous variability in its velocity, hydrography, volume, heat, and salt transports, and water masses. The Kuroshio maximum velocity varied in 0.7-1.4 m s 21 ; the core current width, delineated with the limit v 0.2 m s 21 , ranged from 85 to 135 km, and the thickness varied from 400 to 600 m. A dual velocity maximum in the Kuroshio core current, though unexpected, was observed in three of nine cruises. The Kuroshio core transport, integrated from the directly measured velocity, varied between 10.46 and 22.92 Sv (1 Sv510 6 m 3 s 21 ). The corresponding heat transport referenced to 0 C was 0.838-1.793 3 10 15 W, and the salt transport was 345.0-775.9 3 10 6 kg s 21 . The geostrophic transport estimated using the thermal wind relation with the observed hydrographic data and reference velocity at 900 m is comparable to the directly measured Kuroshio transport during most of the surveys, suggesting the directly measured velocity is mostly in geostrophic balance.

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Air‐sea interaction between tropical cyclone Nari and Kuroshio

Cited by 77 publications

References 14 publications

Field Observations of Changes in SST, Chlorophyll and POC Flux in the Southern East China Sea Before and After the Passage of Typhoon Jangmi

Field Observations of Changes in SST, Chlorophyll and POC Flux in the Southern East China Sea Before and After the Passage of Typhoon Jangmi

Comparison and validation of global and regional ocean forecasting systems for the South China Sea

Large variability of the Kuroshio at 23.75°N east of Taiwan

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