Articles | Volume 10, issue 6
https://doi.org/10.5194/os-10-923-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/os-10-923-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Assessment of the representation of Antarctic Bottom Water properties in the ECCO2 reanalysis
M. Azaneu
CORRESPONDING AUTHOR
Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, 96203-900, Brazil
Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, 96203-900, Brazil
M. M. Mata
Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, 96203-900, Brazil
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Tiago S. Dotto, Mauricio M. Mata, Rodrigo Kerr, and Carlos A. E. Garcia
Earth Syst. Sci. Data, 13, 671–696, https://doi.org/10.5194/essd-13-671-2021, https://doi.org/10.5194/essd-13-671-2021, 2021
Short summary
Short summary
A novel seasonal three-dimensional high-resolution hydrographic gridded data set for the northern Antarctic Peninsula (NAP) based on measurements obtained from 1990–2019 by the ship-based Argo profilers and tagged marine mammals is presented. The main oceanographic features of the NAP are well represented, with the final product having many advantages compared to low-resolution climatologies. In addition, new information on the regional water mass pathways and their characteristics is unveiled.
Wilton Aguiar, Mauricio M. Mata, and Rodrigo Kerr
Ocean Sci., 13, 851–872, https://doi.org/10.5194/os-13-851-2017, https://doi.org/10.5194/os-13-851-2017, 2017
Short summary
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In ocean models, Antarctic Bottom Water (AABW) formation is frequently misrepresented. Hence, assessing the causes of spurious formation is important to ensure accurate future simulations. Only one of the state-of-art reanalyses investigated showed AABW formation accurately. Spurious formation in the other two products resulted from opening of open ocean polynyas. The relatively accurate AABW formation in one of the products is an important advance in the simulation of deep ocean circulation.
G. S. Pilo, M. M. Mata, and J. L. L. Azevedo
Ocean Sci., 11, 629–641, https://doi.org/10.5194/os-11-629-2015, https://doi.org/10.5194/os-11-629-2015, 2015
Short summary
Short summary
Oceanic eddies are closed circulation features that transport water between regions, taking part in the ocean's heat and salt balance. We perform a comparative eddy census in the East Australian, Agulhas and Brazil currents. We find that eddy propagation in all systems is steered by the local mean flow and bathymetry. Also, eddies present a geographic segregation according to size. Investigating eddy propagation helps us to better understand their effect in local mixing.
J. M. Marson, I. Wainer, M. M. Mata, and Z. Liu
Clim. Past, 10, 1723–1734, https://doi.org/10.5194/cp-10-1723-2014, https://doi.org/10.5194/cp-10-1723-2014, 2014
A. Castagna, H. Evangelista, L. G. Tilstra, and R. Kerr
Biogeosciences Discuss., https://doi.org/10.5194/bgd-11-11671-2014, https://doi.org/10.5194/bgd-11-11671-2014, 2014
Revised manuscript not accepted
T. S. Dotto, R. Kerr, M. M. Mata, M. Azaneu, I. Wainer, E. Fahrbach, and G. Rohardt
Ocean Sci., 10, 523–546, https://doi.org/10.5194/os-10-523-2014, https://doi.org/10.5194/os-10-523-2014, 2014
Related subject area
Approach: Data Assimilation | Depth range: Deep Ocean | Geographical range: Deep Seas: Southern Ocean | Phenomena: Temperature, Salinity and Density Fields
Assessment of the structure and variability of Weddell Sea water masses in distinct ocean reanalysis products
T. S. Dotto, R. Kerr, M. M. Mata, M. Azaneu, I. Wainer, E. Fahrbach, and G. Rohardt
Ocean Sci., 10, 523–546, https://doi.org/10.5194/os-10-523-2014, https://doi.org/10.5194/os-10-523-2014, 2014
Cited articles
Adcroft, A., Dutkiewicz, S., Ferreira, D., Heimbach, P., Jahn, O., and Maze, G.: Mitgcm user manual, Tech. rep., MIT Department of Earth, Atmospheric and Planetary Sciences, 2012.
Aoki, S., Rintoul, S. R., Ushio, S., Watanabe, S., and Bindoff, N. L.: Freshening of the Adélie Land Bottom Water near 140°E, Geophys. Res. Lett., 32, L23601, https://doi.org/10.1029/2005GL024246, 2005.
Azaneu, M., Kerr, R., Mata, M. M., and Garcia, C. A. E.: Trends in the deep Southern Ocean (1958–2010): implications for Antarctic Bottom Water properties and volume export, J. Geophys. Res., 118, 4213–4227, https://doi.org/10.1002/jgrc.20303, 2013.
Boyer, T. P., Antonov, J. I., Baranova, O. K., Garcia, H. E., Johnson, D. R., Locarnini, R. A., Mishonov, A. V., O'Brien, T. D., Seidov, D., Smolyar, I. V., and Zweng, M. M.: World Ocean Database 2009, NOAA Atlas NESDIS, 66, edited by: Levitus, S., DVD, US Gov. Printing Office, Washington, DC, 2009.
Carmack, E. C. and Foster, T. D.: On the flow of water out of the Weddell Sea, Deep-Sea Res., 22, 711–724, 1975.
Cavalieri, D. J. and Parkinson, C. L.: Antarctic sea ice variability and trends, 1979–2006, J. Geophys. Res., 113, C07004, https://doi.org/10.1029/2007JC004564, 2008.
Cavalieri, D. J., Parkinson, C., Gloersen, P., and Zwally, H. J.: Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data, January 1979–June 2006, National Snow and Ice Data Center, Boulder, Colorado USA, digital media, 1996, updated 2006.
Condron, A., Winsor, P., Hill, C., and Menemenlis, D.: Simulated response of the Arctic freshwater budget to extreme NAO wind forcing, J. Climate, 22, 2422–2437, 2009.
Curry, J. A. and Webster, P. J.: Sea ice, snow, and glaciers, in: Thermodynamics of Atmospheres and Oceans, 65, chap. 10, edited by: Curry, J. A. and Webster, P. J., 1–471, 1999.
de Lavergne, C., Palter, J. B., Galbraith, E. D., Bernardello, R., and Marinov, I.: Cessation of deep convection in the open Southern Ocean under anthropogenic climate change, Nature Climate Change, 4, 278–282, 2014.
Dotto, T. S., Kerr, R., Mata, M. M., Azaneu, M., Wainer, I., Fahrbach, E., and Rohardt, G.: Assessment of the structure and variability of Weddell Sea water masses in distinct ocean reanalysis products, Ocean Sci., 10, 523–546, https://doi.org/10.5194/os-10-523-2014, 2014.
Fahrbach, E., Harms, S., Rohardt, G., Schröder, M., and Woodgate, R. A.: Flow of bottom water in the northwestern Weddell Sea, J. Geophys. Res., 106, 2761–2778, 2001.
Fahrbach, E., Hoppema, M., Rohardt, G., Schröder, M., and Wisotzki, A.: Decadal-scale variations of water mass properties in the deep Weddell Sea, Ocean Dynam., 54, 77–91, 2004.
Fahrbach, E., Hoppema, M., Rohardt, G., Boebel, O., Klatt, O., and Wisotzki, A.: Warming of deep and abyssal water masses along the Greenwich meridian on decadal time scales: the Weddell gyre as a heat buffer, Deep-Sea Res. Pt. II, 58, 2509–2523, 2011.
Foldvik, A., Gammelsröd, T., and Törresen, T.: Circulation and water masses on the southern Weddell Sea shelf, Antarct. Res. Ser., 43, 5–20, 1985.
Foldvik, A., Gammelsrod, T., Osterhus, S., Fahrbach, E., Rohardt, G., Schröder, M., Nicholls, K. W., Padman, L., and Woodgate, R. A.: Ice shelf water overflow and bottom water formation in the southern Weddell Sea, J. Phys. Oceanogr., 109, C02015, https://doi.org/10.1029/2003JC002008, 2004.
Franco, B., Mata, M. M., Piola, A. R., and Garcia, C. A. E.: Northwestern Weddell Sea deep outflow into the Scotia Sea during the austral summers of 2000 and 2001 estimated by inverse methods, Deep-Sea Res. Pt. I, 54, 1815–1840, 2007.
Fukamachi, Y., Rintoul, S. R., Church, J. A., Aoki, S., Sokolov, S., Rosenberg, M. A., and Wakatsuchi, M.: Strong export of Antarctic BottomWater east of the Kerguelen plateau, Nat. Geosci., 3, 327–331, 2010.
Gill, A. E.: Circulation and bottom water production in the Weddell Sea, Deep-Sea Res., 20, 111–140, 1973.
Gille, S. T.: Warming of the Southern Ocean since the 1950s, Science, 295, 1275–1277, 2002.
Gordon, A. L.: Deep Antarctic convection west of Maud Rise, J. Phys. Oceanogr., 8, 600–612, 1977.
Gordon, A. L. and Huber, B.: Southern Ocean winter mixed layer, J. Geophys. Res., 95, 11655–11672, https://doi.org/10.1029/JC095iC07p11655, 1990.
Gordon, A. L., Huber, B. A., Mckee, D., and Visbeck, M.: A seasonal cycle in the export of bottom water from the Weddell Sea, Nat. Geosci., 3, 551–556, 2010.
Heimbach, P. and Losch, M.: Adjoint sensitivities of sub-ice-shelf melt rates to ocean circulation under the Pine Island Ice Shelf, West Antarctica, Ann. Glaciol., 53, 59–69, 2012.
Hellmer, H. H., Huhn, O., Gomis, D., and Timmermann, R.: On the freshening of the northwestern Weddell Sea continental shelf, Ocean Sci., 7, 305–316, https://doi.org/10.5194/os-7-305-2011, 2011.
Heuzé, C., Heywood, K. J., Stevens, D. P., and Ridley, J. K.: Southern Ocean bottom water characteristics in CMIP5 models, Geophys. Res. Lett., 40, 1409–1414, 2013.
Huhn, O., Hellmer, H. H., Rhein, M., Rodehacke, C., Roether, W., Schodlok, M. P., and Schröder, M.: Evidence of deep- and bottom-water formation in the western Weddell Sea, Deep-Sea Res. Pt. II, 55, 1098–1116, 2008.
Huhn, O, Rhein, M, Hoppema, M and van Heuven, S.: Decline of deep and bottom water ventilation and slowing down of anthropogenic carbon storage in the Weddell Sea, 1984–2011, Deep-Sea Res. Pt. I, 76, 66–84, https://doi.org/10.1016/j.dsr.2013.01.005, 2013.
Ito, T., Woloszyn, M., and Mazloff, M.: Anthropogenic carbon dioxide transport in the Southern Ocean driven by Ekman flow, Nature, 463, 80–83, 2010.
Jackett, D. R. and McDougall, T. J.: A neutral density variable for the world's ocean, J. Phys. Oceanogr., 27, 237–263, 1997.
Jacobs, S. S.: On the nature and significance of the Antarctic Slope Front, Mar. Chem., 35, 9–24, 1991.
Jacobs, S. S.: Bottom water production and its links with the thermohaline circulation, Antarct. Sci., 16, 427–437, 2004.
Jacobs, S. S. and Giulivi, C. F.: Large multidecadal salinity trends near the Pacific–Antarctic continental margin, J. Climate, 23, 4508–4524, https://doi.org/10.1175/2010JCLI3284.1, 2010.
Jacobs, S. S., Giulivi, C. F., and Mele, P. A.: Freshening of the Ross Sea during the late 20th century, Science, 297, 386–389, https://doi.org/10.1126/science.1069574, 2002.
Johnson, G. C., Purkey, S. G., and Bullister, J. L.: Warming and freshening in the abyssal southeastern Indian Ocean, J. Climate, 21, 5351–5363, 2008.
Johnson, G. C.: Quantifying Antarctic Bottom Water and North Atlantic Deep Water volumes, J. Geophys. Res., 113, C05027, https://doi.org/10.1029/2007JC004477, 2008.
Kerr, R., Mata, M. M., and Garcia, C. A. E.: On the temporal variability of the Weddell Sea Deep Water Masses, Antarct. Sci., 21, 383–400, https://doi.org/10.1017/S0954102009001990, 2009.
Kerr, R., Heywood, K. J., Mata, M. M., and Garcia, C. A. E.: On the outflow of dense water from the Weddell and Ross Seas in OCCAM model, Ocean Sci., 8, 369–388, https://doi.org/10.5194/os-8-369-2012, 2012.
Killworth, P. D.: Deep convection in the world ocean, Rev. Geophys. Space Ge., 21, 1–26, 1983.
Klatt, O., Fahrbach, E., Hoppema, M., and Rohardt, G.: The transport of the Weddell Gyre across the Prime Meridian, Deep-Sea Res. Pt. II, 52, 513–528, 2005.
Lee, T., Awaji, T., Balmaseda, M., Ferry, N., Fujii, Y., Fukumori, I., Giese, B., Heimbach, P., Köhl, A., Masina, S., Remy, E., Rosati, A., Schodlok, M., Stammer, D., and Weaver, A.: Consistency and fidelity of Indonesian-throughflow total volume transport estimated by 14 ocean data assimilation products, Dynam. Atmos. Oceans, 50, 201–223, https://doi.org/10.1016/j.dynatmoce.2009.12.004, 2010.
Lumpkin, R. and Speer, K.: Global ocean meridional overturning, J. Phys. Oceanogr., 37, 2550–2562, 2007.
Marshall, J., Adcroft, A., Hill, C., Perelman, L., and Heisey, C.: A finite-volume, incompressible Navier–Stokes model for studies of the ocean on parallel computers, J. Geophys. Res., 102, 5753–5766, 1997.
Martin, T., Wonsun, P., and Latif, M.: Multi-Centennial Variability Controlled by Southern Ocean Convection in the Kiel Climate Model Climate Dynamics, 40 pp., 2005–2022, https://doi.org/10.1007/s00382-012-1586-7, 2013.
Maximenko, N. and Niiler, P.: Hybrid decade-mean global sea level with mesoscale resolution, in: Recent Advances in Marine Science and Technology, edited by: Saxena, N., PACON International, Honolulu, 55–59, 2005.
Mazloff, M. R., Heimbach, P., and Wunsch, C.: An eddy-permitting Southern Ocean state estimate, J. Phys. Oceanogr., 40, 880–899, 2010.
McKee, D. C., Yuan, X., Gordon, A. L., Huber, B. A., and Dong, Z.: Climate impact on interannual variability of Weddell Sea Bottom Water, J. Geophys. Res., 116, C05020, https://doi.org/10.1029/2010JC006484, 2011.
Menemenlis, D., Fukumori, I., and Lee, T.: Using Green's functions to calibrate an ocean general circulation model, Mon. Weather Rev., 133, 1224–1240, 2005.
Menemenlis, D., Campin, J. M., Heimbach, P., Hill, C., Lee, T., Schodlok, M., and Zhang, H.: ECCO2: high resolution global ocean and sea ice data synthesis, Mercator Ocean Quarterly Newsletter, 31, 13–21, 2008.
Meredith, M. P., Locarnini, R. A., Van Scoy, K. A.,Watson, A. J., Heywood, K. J., and King, B. A.: On the sources of Weddell Gyre Antarctic Bottom Water, J. Geophys. Res., 105, 1093–1104, 2000.
Morales Maqueda, M. A., Willmott, A. J., and Biggs, N. R. T.: Polynya dynamics: A review of observations and modeling, Rev. Geophys., 42, RG1004, https://doi.org/10.1029/2002RG000116, 2004.
Muench, R. D. and Hellmer, H. H.: The international DOVETAIL program, Deep Sea Res.-Pt. II, 49, 4711–4714, 2002.
Naveira Garabato, A. C., McDonagh, E. L., Stevens, D. P., Heywood, K. J., and Sanders, R. J.: On the export of Antarctic Bottom Water from the Weddell Sea, Deep-Sea Res., 49, 4715–4742, 2002.
Nguyen, A. T., Menemenlis, D., and Kwok, R.: Improved modeling of the Arctic halocline with a subgrid-scale brine rejection parameterization, J. Geophys. Res., 114, C11014, https://doi.org/10.1029/2008JC005121, 2009.
Nicholls, K. W., Østerhus, S., Makinson, K., Gammelsrød, T., and Fahrbach, E.: Ice–ocean processes over the continental shelf of the southern Weddell Sea, Antarctica: a review, Rev. Geophys., 47, 1–23, https://doi.org/10.1029/2007RG000250, 2009.
Onogi, K., Tsutsui, J., Koide, H., Sakamoto, M., Kobayashi, S., Hatsushika, H., Matsumoto, T., Yamazaki, N., Kamahori, H., Takahashi, K., Kadokura, S., Wada, K., Kato, K., Oyama, R., Ose, T., Mannoji, N., and Taira, R.: The JRA-25 reanalysis, J. Meteorol. Soc. Jpn., 85, 1–3, 2007.
Orsi, A. H., Nowlin, W. D., and Whitworth, T.: On the circulation and stratification of the Weddell Gyre, Deep-Sea Res. Pt. I, 40, 169–303, 1993.
Orsi, A. H., Whitworth III, T., Nowlin Jr., W. D., Whitworth, T., and Nowlin, W. D.: On the meridional extent and fronts of the Antarctic Circumpolar Current, Deep-Sea Res. Pt. I, 42, 641–673, 1995.
Orsi, A. H., Johnson, G. C., and Bullister, J. L.: Circulation, mixing and production of Antarctic Bottom Water, Prog. Oceanogr., 43, 55–109, 1999.
Parkinson, C. L. and Cavalieri, D. J.: Antarctic sea ice variability and trends, 1979–2010, The Cryosphere, 6, 871–880, https://doi.org/10.5194/tc-6-871-2012, 2012.
Purkey, S. G. and Johnson, G. C.: Global contraction of Antarctic Bottom Water between the 1980s and 2000s, J. Climate, 25, 5830–5844, 2012.
Purkey, S. G. and Johnson, G. C.: Antarctic Bottom Water Warming and Freshening: Contributions to Sea Level Rise, Ocean Freshwater Budgets, and Global Heat Gain, J. Climate, 26, 6105–6122, https://doi.org/10.1175/JCLI-D-12-00834.1, 2013.
Rahmstorf, S.: Thermohaline ocean circulation, in: Encyclopedia of Quaternary Sciences, edited by: Elias, S. A., Elsevier, Amsterdam, 739–750, 2006.
Renner, A. H. H., Heywood, K. J., and Thorpe, S. E.: Validation of three global ocean models in the Weddell Sea, Ocean Model., 30, 1–15, 2009.
Rignot, E., Fenty, I., Menemenlis, D., and Xu, Y.: Spreading of warm ocean waters around Greenland as a possible cause for glacier acceleration, Ann. Glaciol., 53, 257–266, 2012.
Rintoul, S. R.: On the origin and infuence of Adelie Land Bottom Water, in: Ocean, Ice and Atmosphere: Interactions at Antarctic Continental Margin, edited by: Jacobs, S. S. and Weiss, R., Antarctic Research Series, Vol. 75, American Geophysical Union, Washington, DC, 151–171, 1998.
Rintoul, S. R.: Rapid freshening of Antarctic Bottom Water formed in the Indian and Pacific oceans, Geophys. Res. Lett., 34, 1–5, 2007.
Rintoul, S. R. and Bullister, J. L.: A late winter hydrographic section from Tasmania to Antarctica, Deep-Sea Res. Pt. I, 46, 1417–1454, 1999.
Robertson, R., Visbeck, M., Gordon, A. L., and Fahrbach, E.: Long-term temperature trends in the deep waters of the Weddell Sea, Deep Sea Res.-Pt. II, 49, 4791–4806, 2002.
Schodlok, M., Menemenlis, D., Rignot, E., and Studinger, M.: Sensitivity of the ice shelf ocean system to the sub-ice shelf cavity shape measured by NASA IceBridge in Pine Island Glacier, West Antarctica, Ann. Glaciol., 53, 156–162, 2012.
Schröder, M., Hellmer, H., and Absy, J. M.: On the near bottom variability in the northwestern Weddell Sea, Deep-Sea Res. Pt. II, 49, 4767–4790, https://doi.org/10.1016/S0967-0645(02)00158-3, 2002.
Shimada, K., Aoki, S., Ohshima, K. I., and Rintoul, S. R.: Influence of Ross Sea Bottom Water changes on the warming and freshening of the Antarctic Bottom Water in the Australian-Antarctic Basin, Ocean Sci., 8, 419–432, https://doi.org/10.5194/os-8-419-2012, 2012.
Talley, L. D.: Closure of the global overturning circulation through the Indian, Pacific, and Southern Oceans: schematics and transports, Oceanography, 26, 80–97, 2013.
Taylor, K. L.: Summarizing multiple aspects of model performance in a single diagram, J. Geophys. Res., 106, 7183–7192, 2001.
van Sebille, E., Spence, P., Mazloff, M. R., England, M. H., Rintoul, S. R., and Saenko, O. A.: Abyssal connections of Antarctic Bottom Water in a Southern Ocean state estimate, Geophys. Res. Lett., 40, 2177–2182, https://doi.org/10.1002/grl.50483, 2013.
Volkov, D. L., Fu, L.-L., and Lee, T.: Mechanisms of the meridional heat transport in the Southern Ocean, Ocean Dynam., 60, 791–801, 2010.
Weppernig, R., Schlosser, P., Khatiwala, S., and Fairbanks, R. G.: Isotope data from ice station Weddell: implications for deep water formation in the Weddell Sea, J. Geophys. Res., 101, 25723–25739, 1996.
Whitworth, T., Orsi, A. H., Kim, S. J., Nowlin Jr., W. D., and Locarnini, R. A.: Water masses and mixing near the Antarctic slope front, in: Ocean, Ice, and Atmosphere: Interactions at the Antarctic Continental Margin, edited by: Jacobs, S. S. and Weiss, R. F., Antarctic Research Series, Vol. 75, AGU, Washington, DC, 1–27, 1998.
Wunsch, C., Heimbach, P., Ponte, R. M., and Fukumori, I.: The global general circulation of the ocean estimated by the ECCO-Consortium, Oceanography, 22, 88–103, 2009.
Wunsch, C. and Heimbach, P.: Bidecadal Thermal Changes in the Abyssal Ocean, J. Phys. Oceanogr., 44, 2013–2030, https://doi.org/10.1175/JPO-D-13-096.1, 2014.
Xu, Y., Rignot, E., Menemenlis, D., and Koppes, M. N.: Numerical experiments on subaqueous melting of Greenland tidewater glaciers in response to ocean warming and enhanced subglacial discharge, Ann. Glaciol., 53, 229–234, 2012.
Zhang, J., Hibler, W., Steele, M., and Rothrock, D.: Arctic ice–ocean modeling with and without climate restoring, J. Phys. Oceanogr., 28, 191–217, 1998.
Short summary
We analyzed the ability of the ECCO2 reanalysis to represent the hydrographic properties and variability of Antarctic Bottom Water in the Southern Ocean. After 2004, the opening of an oceanic polynya in the Weddell Sea sector and consequent intense dense water production leads to an unrealistic scenario. Even before 2004, bottom waters are warmer and less dense than expected, while the absolute volume transport and velocity estimates are underrepresented.
We analyzed the ability of the ECCO2 reanalysis to represent the hydrographic properties and...