Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
권호 표지

A Case Study on the Heat budget of the Marine Atmosphere Boundary Layer due to inflow of cloud on observation at Ulleungdo

울릉도에서 구름 유입시 관측한 해양대기경계층의 열수지에 관한 사례연구

  • Kim, Hee-Jong (Department of Astronomy and Atmospheric Sciences, Kyungpook National University) ;
  • Yoon, Ill-Hee (Department of Earth Science Education, Kyungpook National University) ;
  • Kwon, Byung-Hyuk (Department of Environmental Atmospheric Sciences, Pukyong National University)
  • 김희종 (경북대학교 천문대기과학과) ;
  • 윤일희 (경북대학교 과학교육학부 지구과학교육전공) ;
  • 권병혁 (부경대학교 환경대기과학과)
  • Published : 2004.10.30
Download PDF
⟨ Previous Next ⟩

Abstract

In order to study developments of the marine atmosphere boundary layer in cloud incoming, important parameters like heat advection, surface layer heat flux, and radiation energy were estimated using the rawinsonde, AWS data, satellite images, and buoy data which was installed at the East Sea. We explained the variation and the development of mixed layer in terms of surface layer heat flux and long wave radiation under the cloudy sky. The heat flux was obtained by means of the bulk method. Conservation of heat was analysed by heat budget equation, which was consist of buoy data in the East sea, and sounding data at Ulleungdo and at Pohang. During the inflow of cloud, radiative cooling at the surface after was suppressed and long wave radiation from cloud played a role of warming. The surface layer temperature was also remained warm by influence of warm advection from south-easterly direction. The air temperature in night was increased, as a result, mixed layer was not destroyed and The nocturnal boundary layer was composed of the mixed layer and the residual layer.

구름이 유입하는 경우 해양대기경계층의 발달을 분석하기 위하여, 울릉도에서 관측한 레윈존데 자료와 AWS 자료, 위성사진, 동해에 설치된 부이 자료를 이용하였다. 이 자료를 이용하여 열의 이류와 표층 열속, 구름 유입에 따른 복사에너지를 추정하였다. 혼합층 내의 열 변화 및 혼합층의 발달을 표층 열속과 구름에 의한 장파복사속으로 설명하였다. 열속의 변화를 알아보기 위해 벌크법을 이용하였다. 울릉도, 동해상의 부이, 포항에서 관측한 자료를 이용한 열수지 방정식으로 대기경계층의 열보존 관계를 분석하였다. 구름의 유입으로 인해 일몰 후 지면의 복사냉각이 방해되고, 구름에서 장파복사가 방출된다. 그로 인해 야간에 오히려 기온이 증가하였다. 또 남서쪽으로부터 따뜻한 공기가 이류되어, 하층 대기의 온도를 증가시켰다. 이러한 이유로 혼합층이 파괴되지 않고, 잔류층을 형성하며 남아있었다.

Keywords

References

  1. 권병혁, 2001, 경북지역에서 관측된 야간 대기경계층의 특성, 한국환경과학회지, 10(5), 329-336
  2. 손병주, 1996, 구름이 지표 장파복사 수지에 미치는 영향, 한국기상학회지, 32 (2), 229-242
  3. 이광목, 2001, 대기복사 -장파복사와 응용-, 시그마프레스, 194 p
  4. Kondo, J., 1975, Air-sea bulk transfer coefficients in diabatic conditions, Boundary-Layer Meteorology, 9, 91-112 https://doi.org/10.1007/BF00232256
  5. Kwon, B.H., B$\dot{e}$nech, B., Lambert, D., Durand, P., Druilhet, A., Giordani, H., and Planton, S., 1998, Structure of the marine atmospheric boundary layer over an oceanic thermal front: SEMAPHORE experiment, Journal of Geophysical Research, 103, CII, 25159-25180 https://doi.org/10.1029/98JC02207
  6. Kwon, B.H. and Jos$\dot{e}$ Francisco de Oliveira Junior, 2004, Variations of turbulent fluxes in the Atmospheric Surface layer according to the presence of cloud, Journal of the Korean Earth Science Society, 25(2), 87-93
  7. Lambert, D. and Durand, P., 1999, The marine atmospheric boundary layer during SEMAPHORE. I: Mean vertical structure and non-axisymmetry of turbulence, Quarterly Journal of the Royal Meteorological Society, 125, 495-512 https://doi.org/10.1002/qj.49712555407
  8. La Violette, PE., 1983, The Grand Banks Experiment: A satellite/aircraft/ship experiment to explore the ability of specialized radars to define ocean fronts. Report No. 49, Naval Ocean Research and Development Activity, NSTL Station, Mississippi
  9. Li Xing-Sheng, Gaynor, J.E., and Kaimal, J.C., 1993, A study of multiple stable layers in the nocturnal lower atmosphere, Boundary-Layer Meteorology, 26, 157-168 https://doi.org/10.1007/BF00121540
  10. Mahrt, L. and Paumier, J., 1982, Cloud-top entrainment instability observed in AMTEX, Journal of Atmospheric Science, 33, 41-5I
  11. Manabe, S. and F. Moller, 1961, On the radiative equilibrium and heat balance of the atmosphere, Monthly Weather Review, 12, 503-532
  12. Park, MJ., Kim, YS., Kwon, BH., and Han, YH., 2003, Characteristics of Heat and Turbulent Kinetic Energy over the Yellow Sea and the South Sea, Korean Journal of Atmospheric Sciences, 6(1), I-II
  13. R$\dot{e}$chou, A., Durand, P., Druilhet, A., and B$\dot{e}$nech, B. 1995, Turbulence structure of the boundary layer below marine clouds in the SOFIA experiment, Annual Geophysicase, 13, 1075-1086 https://doi.org/10.1007/s00585-995-1075-y
  14. Roach, W.T. and Slingo, A., 1979, A high resolution infrared radiative transfer scheme to study the interaction of radiation with cloud, Quarterly Journal of the Royal Meteorological Society, 105, 603-614 https://doi.org/10.1002/qj.49710544508
  15. Stull, R.B., 1992, An Introduction to Boundary Layer Meteorology. Kluwer Academic Publishers, 666 p
  16. Sweet, w., Fett, R., Kerling, J., and La Violette, P., 1981, Air-sea interaction effects in the lower troposphere across the north wall of the Gulf Stream, Monthly Weather Review, 109, 1042-1052 https://doi.org/10.1175/1520-0493(1981)109<1042:ASIEIT>2.0.CO;2