Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2021 / Cilt: 21 - Sayı: 5

Analysis of the Atmospheric and Oceanic Circulations of the Southern Ocean with the Help of Numerical Models

Güney Okyanusunun Atmosfer ve Okyanus Sirkülasyonlarının Sayısal Modeller Yardımıyla İncelenmesi

Pages
1231–1246
Publication Date
2022-10-12
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This study has provided to demonstrate the capacity and capabilities to develop a Southern Ocean integrated fully coupled atmosphere-ocean model that can be carried out in the future.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, our aim is to investigate Southern Ocean wind dynamics and its impact on the ocean overturning circulation.
📊
Key Findings & Data:To this end, we performed atmosphere and ocean-sea ice coupled regional high-resolution models separately.
💡
Conclusion & Impact:This study has provided to demonstrate the capacity and capabilities to develop a Southern Ocean integrated fully coupled atmosphere-ocean model that can be carried out in the future.
🔬Design:Modeling & Simulation
📍Scope:2007 Verileri
⚙️Variables:Domain Parameters

Abstract

In this study, our aim is to investigate Southern Ocean wind dynamics and its impact on the ocean overturning circulation. To this end, we performed atmosphere and ocean-sea ice coupled regional high-resolution models separately. We conduct three concurrent simulations spanning between 2007 and 2013. The first simulation is atmosphere only regional model forced by observed sea surface temperature and sea ice concentration. The model successfully captures important atmospheric properties such as mean and seasonality of the sea level pressure, 2 meter air temperature, upper level jet, Stratospheric Polar vortex. The model compares well against the observation stations throughout the Antarctica. The second simulation is the control ocean-sea ice coupled regional model forced with reanalysis atmospheric dataset. In the ocean model, we capture the sea surface temperature gradient. The transport at the Drake Passage is around 152 Sv which is within the observation values. Finally, we conduct a sensitivity simulation where the zonal wind stress over the Southern Ocean is increased 1.5 times. This leads to stronger Drake Passage transport and Deacon Cell overturning circulation in the model. This study has provided to demonstrate the capacity and capabilities to develop a Southern Ocean integrated fully coupled atmosphere-ocean model that can be carried out in the future.

Özet

Bu çalışmada amacımız, Güney Okyanusu üzerindeki rüzgar dinamiklerini ve bunun okyanus devinim sirkülasyonu üzerindeki etkisini incelemektir. Bu amaçla, atmosfer ve bileşik okyanus-deniz buzu yüksek çözünürlüklü bölgesel modelleri ayrı ayrı koşturulmuştur. 2007 ve 2013 yılları arasında eşzamanlı olarak üç benzetim gerçekleştirilmiştir. İlk benzetim, gözlemlenen deniz yüzeyi sıcaklığı ve deniz buzu konsantrasyonu tarafından zorlanan sadece atmosfer bölgesel modelidir. Model, ortalama deniz seviyesi basıncı, 2 metre hava sıcaklığı, yukarı atmosfer jetleri ve Stratosferik Polar Vortex gibi önemli atmosferik özelliklerin mevsimselliğini başarıyla yakalamıştır. Model, Antarktika'daki gözlem istasyonlarıyla uyumluluk göstermektedir. İkinci benzetim, reanaliz atmosferik veri seti ile zorlanan kontrol okyanus-deniz buzu bileşik bölgesel modeldir. Okyanus modeli, deniz yüzeyi sıcaklık gradyanını doğru şekilde yakalamayı başarmıştır. Drake Geçidi'ndeki taşınım değerleri gözlemler dahilinde yaklaşık 152 Sv'dir. Son olarak, Güney Okyanusu üzerindeki bölgesel rüzgar gerilmesinin 1,5 kat arttığı bir duyarlılık benzetimi de yapılmış ve daha güçlü Drake Geçidi taşınımı ve Deacon Hücresi sirkülasyonu gözlemlenmiştir. Bu çalışma ileride gerçekleştirilebilecek Güney Okyanusu tamamen bütünleşik atmosfer-okyanus modeli geliştirilmesi için kapasite ve kabiliyetlerin ortaya konmasını sağlamıştır.

🔖

Cite This Article

TUTAK, B., EZBER, Y., ILICAK, M. (2022). Analysis of the Atmospheric and Oceanic Circulations of the Southern Ocean with the Help of Numerical Models. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 21 - Sayı: 5, 1231–1246. https://ajindex.com/articles/429709

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Abernathey, R., and Cessi, P., 2014. Topographic enhancement of eddy efficiency in baroclinic equilibration. Journal of Physical Oceanography, 44, 2107–2126.
  2. Adcroft, A., Hill, C. N., and Marshall, J.C., 1999. A new treatment of the coriolis terms in c-grid models at both high and low resolutions. Monthly Weather Review, 127, 1928-1936.
  3. Becker, J.J., Sandwell, D.T., Smith, W.H.F., Braud, J., Binder, B., Depner, J., Fabre, D., Factor, J., Ingalls, S., Kim, S.H. and Ladner, R., 2009. Global bathymetry and elevation data at 30 arc seconds resolution: SRTM30_PLUS. Marine Geodesy, 32(4), 355-371.
  4. Böning C.W., Dispert, A., Visbeck, M., Rintoul, S.R., Schwarzkopf, F.U., 2008. The response of the Antarctic Circumpolar Current to recent climate change. Nature Geosciences, 1, 864–869.
  5. Carton, J. A., Chepurin, G. A., & Chen, L., 2018. SODA3: A new ocean climate reanalysis. Journal of Climate, 31(17), 6967-6983.
  6. Cunningham, S. A., Alderson, S. G., King, B. A., & Brandon, M. A., 2003. Transport and variability of the Antarctic circumpolar current in drake passage. Journal of Geophysical Research: Oceans, 108 (C5). Doney, S. C., Large, W. G., and Bryan, F. O., 1998. Surface ocean fluxes and water mass transformations in the coupled NCAR Climate System Model. Journal of Climate, 11, 1420–1441.
  7. Donohue, K. A., Tracey, K. L., Watts, D. R., Chidichimo, M. P., & Chereskin, T. K., 2016. Mean antarctic circumpolar current transport measured in drake passage. Geophysical Research Letters, 43(22), 11-760.
  8. Durack, P.J., Wijffels, S.E., 2010. Fifty-year trends in global ocean salinities and their relationship to broad-scale warming. Journal of Climate, 23, 4342–4362. Farneti R. and Gent P.R., 2011. The effects of the eddy-induced advection coefficient in a coarse-resolution coupled climate model. Ocean Modelling, 39, 135-145.
  9. Farneti, R., Downes, S. M., Griffies, S. M., Marsland, S. J., Behrens, E., Bentsen, M.,. & Yeager, S. G., 2015. An assessment of Antarctic Circumpolar Current and Southern Ocean meridional overturning circulation during 1958–2007 in a suite of interannual CORE-II simulations. Ocean Modelling, 93, 84-120.
  10. Gent, P.R., McWilliams, J.C., 1990. Isopycnal mixing in ocean circulation models. Journal of Physical Oceanography, 20, 150–155.
  11. Gent, P.R., Willebrand, J., McDougall, T. J. and McWilliams, J. C., 1995. Parameterizing eddy-induced tracer transports in ocean circulation models. Journal of Physical Oceanography, 25, 463–474.
  12. Gille, S.T., 2008. Decadal-scale