2014년 가을철 이어도 종합과학기지에서의 난류 플럭스의 관측 및 분석
Observation and Analysis of Turbulent Fluxes Observed at Ieodo Ocean Research Station in Autumn 2014
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
This study investigates the characteristics of turbulent fluxes observed at Ieodo Ocean Research Station (IORS) in autumn 2014. The 10 Hz IORS data is quality controlled and calculated to be the 30 minutes turbulent fluxes. The quality control consists of five steps: a weather check, Vickers and Mahrt (VM) sequential check, VM parallel check, flag check, and direction check. Since the IORS is an open-sea station with no orographic influence, there are no significant diurnal variations for the turbulent fluxes and 10 m wind speed. According to stabilities, the unstable and semi-unstable states appear more than 28% and 70% in autumn, respectively and they have strong winds of over 10 m s−1. In addition, the turbulent fluxes increase with increasing wind speed. In particular, the latent heat flux and its deviations are clearly shown because the latent heat flux is influenced by the change of both the sea surface roughness and wave height induced by the wind. To demonstrate the changes of the turbulent fluxes before and after typhoon, Vongpong (1419), which is the most intense typhoon affecting the Korean Peninsula in 2014, is considered. The turbulent flux fluctuates in accordance with the location of Vongpong. The turbulent fluxes have a large (small) variation when Vongpong approaches (retreats) at the IORS. The overall results represent that the IORS data helps us understand physical processes related to air-sea interaction by providing the valuable and reliable observed data.
Abstract
This study investigates the characteristics of turbulent fluxes observed at Ieodo Ocean Research Station (IORS) in autumn 2014. The 10 Hz IORS data is quality controlled and calculated to be the 30 minutes turbulent fluxes. The quality control consists of five steps: a weather check, Vickers and Mahrt (VM) sequential check, VM parallel check, flag check, and direction check. Since the IORS is an open-sea station with no orographic influence, there are no significant diurnal variations for the turbulent fluxes and 10 m wind speed. According to stabilities, the unstable and semi-unstable states appear more than 28% and 70% in autumn, respectively and they have strong winds of over 10 m s−1. In addition, the turbulent fluxes increase with increasing wind speed. In particular, the latent heat flux and its deviations are clearly shown because the latent heat flux is influenced by the change of both the sea surface roughness and wave height induced by the wind. To demonstrate the changes of the turbulent fluxes before and after typhoon, Vongpong (1419), which is the most intense typhoon affecting the Korean Peninsula in 2014, is considered. The turbulent flux fluctuates in accordance with the location of Vongpong. The turbulent fluxes have a large (small) variation when Vongpong approaches (retreats) at the IORS. The overall results represent that the IORS data helps us understand physical processes related to air-sea interaction by providing the valuable and reliable observed data.
참고문헌 (28)
- Andreas, E. L., "The signature of sea spray in the hexos turbulent heat flux data", Bound. -Layer Meteor, 103, pp.303~333 (2002)
- Charnock, H., "Wind stress on a water surface", Quart. J. Roy. Meteor. Soc, 81, pp.639~640 (1955)
- De Szoeke, S. P., "The MJO and Air-Sea Interaction in TOGA COARE and DYNAMO", J. Climate, 28, pp.597~622 (2015)
- Frankignoul, C., "Air-sea feedback in the North Atlantic and surface boundary conditions for ocean models", J. Climate, 11, pp.2310~2324 (1998)
- Hsiung, J., "Estimates of global oceanic meridional heat transport", J. Phys. Oceanogr, 15, pp.1405~1413 (1985)
- 장혜영, "남중국해의 여름철 대기-해양 상호작용과 동아시아 강수량의 상관성 분석", 대기, 23(3), pp.283~291 (2013), 한국기상학회[DOI]
- Kitoh, A., "On overestimation of tropical precipitation by an atmospheric GCM with prescribed SST", Geophys. Rese. Lett, 26, pp.2965~2968 (1999)
- Kunoki, S., "Oceanic influence on the Baiu frontal zone in the East China Sea", J. Geophys. Res, 120, pp.449~463 (2015)
- Li, Z., "Impact of previous Winter kuroshio SSTA on Summer rainfall in China", Acta Oceano Sinica, 19, pp.76~82 (2004)
- Liu, W. T., "Bulk parameterization of air-sea exchanges of heat and water vapor including the molecular constraints at the interface", J. Atmos. Sci, 36, pp.1722~1735 (1979)
- 문일주, "이어도 종합해양과학기지를 활용한 태풍연구: Part I. 태풍관측의 중요성 및 현황", 대기, 20(3), pp.247~260 (2010), 한국기상학회
- 오현미, "2003~2004년도 이어도 기지 해상기상 특성분석", 한국기상학회지, 41(5), pp.671~680 (2005), 한국기상학회
- 하경자, "이어도 종합해양과학기지에서 관측된 난류 플럭스의 계절적 특성", 대기, 17(4), pp.421~433 (2007), 한국기상학회
- Hyun-Mi Oh, "On Drag Coefficient Parameterization with Post Processed Direct Fluxes Measurements over the Ocean", 한국기상학회지, 46(3), pp.513~523 (2010), 한국기상학회
- Oh, H. -M., "Quality control and tilt correction effects on the turbulent fluxes observed at an ocean platform", J. Appl. Meteor. Climatol, 50, pp.700~712 (2011)
- 오효은, "이어도 기상 관측 자료를 활용한 장마 시작일 분석", 대기, 24(2), pp.189~196 (2014), 한국기상학회
- Oost, W. A., "Stability effects on heat and moisture fluxes at sea", Bound. -Layer Meteor, 95, pp.271~302 (2000)
- Potter, H., "In situ measurements of momentum fluxes in typhoons", J. Atmos. Sci, 72, pp.104~118 (2015)
- Roxy, M., "Intraseasonal SST-precipitation relationship and its spatial variability over the tropical summer monsoon region", Clim. Dynam, 41, pp.45~61 (2013)
- Stull, R. B., "An introduction to boundary layer meteorology", pp.670~ (1988), Kluwer academic publishers
- Subrahamanyam, D. B., "Airsea interface fluxes over the Indian Ocean during INDOEX, IFP-99", J. of Atmos. and Solar-Terr. Phys., 64, pp.291~305 (2002)
- Tokinaga, H., "Ocean frontal effects on the vertical development of clouds over the western North Pacific : In situ and satellite observations", J. Climate, 22, pp.4241~4260 (2009)
- Vickers, D., "Quality control and flux sampling problems for tower and aircraft data", J. Atmos. Oceanic. Technol, 14, pp.512~526 (1997)
- Wallace, J. M., "Atmospheric Science: An Introductory Survey", pp.483~ (2006), Academic Press
- Wu, R., "Local air-sea relationship in observations and model simulations", J. Climate, 19, pp.4914~4932 (2006)
- Xu, H., "Deep Atmospheric Response to the Spring Kuroshio over the East China Sea", J. Climate, 24, pp.4959~4972 (2011)
- "Upper Ocean Thermal Responses to Sea Spray Mediated Turbulent Fluxes during Typhoon Passage" (2015)[URL]
- Zhang, Y., "Feedback mechanisms for the atmosphere and ocean surface", Boundary-Layer Meteorol, 100, pp.321~348 (2001)