|
|
|
| Registros recuperados: 13 | |
|
|
| Arndt, D. S.; Blunden, J.; Dunn, R. J. H.; Aaron-morrison, Arlene P.; Abdallah, A.; Ackerman, Steven A.; Adler, Robert; Alfaro, Eric J.; Allan, Richard P.; Allan, Rob; Alvarez, Luis A.; Alves, Lincoln M.; Amador, Jorge A.; Andreassen, L. M.; Arce, Dayana; Argueez, Anthony; Arndt, Derek S.; Arzhanova, N. M.; Augustine, John; Awatif, E. M.; Azorin-molina, Cesar; Baez, Julian; Bardin, M. U.; Barichivich, Jonathan; Baringer, Molly O.; Barreira, Sandra; Baxter, Stephen; Beck, H. E.; Becker, Andreas; Bedka, Kristopher M.; Behrenfeld, Michael J.; Bell, Gerald D.; Belmont, M.; Benedetti, Angela; Bernhard, G. H.; Berrisford, Paul; Berry, David I.; Bettolli, Maria L.; Bhatt, U. S.; Bidegain, Mario; Biskaborn, B.; Bissolli, Peter; Bjerke, J.; Blake, Eric S.; Blunden, Jessica; Bosilovich, Michael G.; Boucher, Olivier; Boudet, Dagne; Box, J. E.; Boyer, Tim; Braathen, Geir O.; Brimelow, Julian; Bromwich, David H.; Brown, R.; Buehler, S.; Bulygina, Olga N.; Burgess, D.; Calderon, Blanca; Camargo, Suzana J.; Campbell, Jayaka D.; Cappelen, J.; Caroff, P.; Carrea, Laura; Carter, Brendan R.; Chambers, Don P.; Chandler, Elise; Cheng, Ming-dean; Christiansen, Hanne H.; Christy, John R.; Chung, Daniel; Chung, E. -s.; Clem, Kyle R.; Coelho, Caio A. S.; Coldewey-egbers, Melanie; Colwell, Steve; Cooper, Owen R.; Copland, L.; Cross, J. N.; Crouch, Jake; Cutie, Virgen; Davis, Sean M.; De Eyto, Elvira; De Jeu, Richard A. M.; De Laat, Jos; Degasperi, Curtis L.; Degenstein, Doug; Demircan, M.; Derksen, C.; Di Girolamo, Larry; Diamond, Howard J.; Dindyal, S.; Dlugokencky, Ed J.; Dohan, Kathleen; Dokulil, Martin T.; Dolman, A. Johannes; Domingues, Catia M.; Donat, Markus G.; Dong, Shenfu; Dorigo, Wouter A.; Drozdov, D. S.; Dunn, Robert J. H.; Duran-quesada, Ana M.; Dutton, Geoff S.; Elkharrim, M.; Elkins, James W.; Epstein, H. E.; Espinoza, Jhan C.; Etienne-leblanc, Sheryl; Famiglietti, James S.; Farrell, S.; Fateh, S.; Fausto, R. S.; Feely, Richard A.; Feng, Z.; Fenimore, Chris; Fettweis, X.; Fioletov, Vitali E.; Flannigan, Mike; Flemming, Johannes; Fogt, Ryan L.; Folland, Chris; Fonseca, C.; Forbes, B. C.; Foster, Michael J.; Francis, S. D.; Franz, Bryan A.; Frey, Richard A.; Frith, Stacey M.; Froidevaux, Lucien; Ganter, Catherine; Gerland, S.; Gilson, John; Gobron, Nadine; Goldenberg, Stanley B.; Goni, Gustavo; Gonzalez, Idelmis T.; Goto, A.; Greenhough, Marianna D.; Grooss, J. -u.; Gruber, Alexander; Guard, Charles; Gupta, S. K.; Gutierrez, J. M.; Haas, C.; Hagos, S.; Hahn, Sebastian; Haimberger, Leo; Hall, Brad D.; Halpert, Michael S.; Hamlington, Benjamin D.; Hanna, E.; Hanssen-bauer, I; Hare, Jon; Harris, Ian; Heidinger, Andrew K.; Heim, Richard R., Jr.; Hendricks, S.; Hernandez, Marieta; Hernandez, Rafael; Hidalgo, Hugo G.; Ho, Shu-peng; Hobbs, William R.; Huang, Boyin; Huelsing, Hannah K.; Hurst, Dale F.; Ialongo, I.; Ijampy, J. A.; Inness, Antje; Isaksen, K.; Ishii, Masayoshi; Jevrejeva, Svetlana; Jimenez, C.; Jin Xiangze,; John, Viju; Johns, William E.; Johnsen, B.; Johnson, Bryan; Johnson, Gregory C.; Johnson, Kenneth S.; Jones, Philip D.; Jumaux, Guillaume; Kabidi, Khadija; Kaiser, J. W.; Kass, David; Kato, Seiji; Kazemi, A.; Kelem, G.; Keller, Linda M.; Kelly, B. P.; Kendon, Mike; Kennedy, John; Kerr, Kenneth; Kholodov, A. L.; Khoshkam, Mahbobeh; Killick, Rachel; Kim, Hyungjun; Kim, S. -j.; Kimberlain, Todd B.; Klotzbach, Philip J.; Knaff, John A.; Kochtubajda, Bob; Kohler, J.; Korhonen, Johanna; Korshunova, Natalia N.; Kramarova, Natalya; Kratz, D. P.; Kruger, Andries; Kruk, Michael C.; Krumpen, T.; Lakatos, M.; Lakkala, K.; Lanckmann, J. -p.; Lander, Mark A.; Landschuetzer, Peter; Landsea, Chris W.; Lankhorst, Matthias; Lantz, Kathleen; Lazzara, Matthew A.; Leuliette, Eric; Lewis, Stephen R.; L'Heureux, Michelle; Lieser, Jan L.; Lin, I-i; Liu, Hongxing; Liu, Yinghui; Locarnini, Ricardo; Loeb, Norman G.; Long, Craig S.; Loranty, M.; Lorrey, Andrew M.; Loyola, Diego; Lu, Mong-ming; Lumpkin, Rick; Luo, Jing-jia; Luojus, K.; Lyman, John M.; Macara, Gregor; Macdonald, Alison M.; Macias-fauria, M.; Malkova, G. V.; Manney, G.; Marchenko, S. S.; Marengo, Jose A.; Marra, John J.; Marszelewski, Wlodzimierz; Martens, B.; Martinez-gueingla, Rodney; Massom, Robert A.; Mathis, Jeremy T.; May, Linda; Mayer, Michael; Mazloff, Matthew; Mcbride, Charlotte; Mccabe, M. F.; Mccarthy, Gerard; Mccarthy, M.; Mcdonagh, Elaine L.; Mcgree, Simon; Mcvicar, Tim R.; Mears, Carl A.; Meier, W.; Mekonnen, A.; Menezes, V. V.; Mengistu Tsidu, G.; Menzel, W. Paul; Merchant, Christopher J.; Meredith, Michael P.; Merrifield, Mark A.; Minnis, Patrick; Miralles, Diego G.; Mistelbauer, T.; Mitchum, Gary T.; Mitro, Srkani; Monselesan, Didier; Montzka, Stephen A.; Mora, Natalie; Morice, Colin; Morrow, Blair; Mote, T.; Mudryk, L.; Muehle, Jens; Mullan, A. Brett; Mueller, R.; Nash, Eric R.; Nerem, R. Steven; Newman, Louise; Newman, Paul A.; Nieto, Juan Jose; Noetzli, Jeannette; O'Neel, S.; Osborn, Tim J.; Overland, J.; Oyunjargal, Lamjav; Parinussa, Robert M.; Park, E-hyung; Pasch, Richard J.; Pascual-ramirez, Reynaldo; Paterson, Andrew M.; Pearce, Petra R.; Pellichero, Violaine; Pelto, Mauri S.; Peng, Liang; Perkins-kirkpatrick, Sarah E.; Perovich, D.; Petropavlovskikh, Irina; Pezza, Alexandre B.; Phillips, C.; Phillips, David; Phoenix, G.; Pinty, Bernard; Pitts, Michael C.; Pons, M. R.; Porter, Avalon O.; Quintana, Juan; Rahimzadeh, Fatemeh; Rajeevan, Madhavan; Rayner, Darren; Raynolds, M. K.; Razuvaev, Vyacheslav N.; Read, Peter; Reagan, James; Reid, Phillip; Reimer, Christoph; Remy, Samuel; Renwick, James A.; Revadekar, Jayashree V.; Richter-menge, J.; Rimmer, Alon; Robinson, David A.; Rodell, Matthew; Rollenbeck, Ruetger; Romanovsky, Vladimir E.; Ronchail, Josyane; Roquet, F.; Rosenlof, Karen H.; Roth, Chris; Rusak, James A.; Sallee, Jean-bapiste; Sanchez-lugo, Ahira; Santee, Michelle L.; Sarmiento, Jorge L.; Sawaengphokhai, P.; Sayouri, Amal; Scambos, Ted A.; Schemm, Jae; Schladow, S. Geoffrey; Schmid, Claudia; Schmid, Martin; Schoeneich, P.; Schreck, Carl J., Iii; Schuur, Ted; Selkirk, H. B.; Send, Uwe; Sensoy, Serhat; Sharp, M.; Shi, Lei; Shiklomanov, Nikolai I.; Shimaraeva, Svetlana V.; Siegel, David A.; Signorini, Sergio R.; Silov, Eugene; Sima, Fatou; Simmons, Adrian J.; Smeed, David A.; Smeets, C. J. P. P.; Smith, Adam; Smith, Sharon L.; Soden, B.; Spence, Jaqueline M.; Srivastava, A. K.; Stackhouse, Paul W., Jr.; Stammerjohn, Sharon; Steinbrecht, Wolfgang; Stella, Jose L.; Stennett-brown, Roxann; Stephenson, Tannecia S.; Strahan, Susan; Streletskiy, Dimitri A.; Sun-mack, Sunny; Swart, Sebastiaan; Sweet, William; Tamar, Gerard; Taylor, Michael A.; Tedesco, M.; Thoman, R. L.; Thompson, L.; Thompson, Philip R.; Timmermans, M. -l.; Timofeev, Maxim A.; Tirnanes, Joaquin A.; Tobin, Skie; Trachte, Katja; Trewin, Blair C.; Trotman, Adrian R.; Tschudi, M.; Tweedy, Olga; Van As, D.; Van De Wal, R. S. W.; Van Der Schalie, Robin; Van Der Schrier, Gerard; Van Der Werf, Guido R.; Van Meerbeeck, Cedric J.; Velicogna, I.; Verburg, Piet; Vieira, G.; Vincent, Lucie A.; Voemel, Holger; Vose, Russell S.; Wagner, Wolfgang; Wahlin, Anna; Walker, D. A.; Walsh, J.; Wang, Bin; Wang, Chunzai; Wang, Junhong; Wang, Lei; Wang, M.; Wang, Sheng-hung; Wanninkhof, Rik; Watanabe, Shohei; Weber, Mark; Weller, Robert A.; Weyhenmeyer, Gesa A.; Whitewood, Robert; Wiese, David N.; Wijffels, Susan E.; Wilber, Anne C.; Wild, Jeanette D.; Willett, Kate M.; Willie, Shem; Willis, Josh K.; Wolken, G.; Wong, Takmeng; Wood, E. F.; Woolway, R. Iestyn; Wouters, B.; Xue, Yan; Yim, So-young; Yin, Xungang; Yu, Lisan; Zambrano, Eduardo; Zhang, Huai-min; Zhang, Peiqun; Zhao, Guanguo; Zhao, Lin; Ziemke, Jerry R.; Zilberman, Nathalie. |
| In 2016, the dominant greenhouse gases released into Earth's atmosphere-carbon dioxide, methane, and nitrous oxide-continued to increase and reach new record highs. The 3.5 +/- 0.1 ppm rise in global annual mean carbon dioxide from 2015 to 2016 was the largest annual increase observed in the 58-year measurement record. The annual global average carbon dioxide concentration at Earth's surface surpassed 400 ppm (402.9 +/- 0.1 ppm) for the first time in the modern atmospheric measurement record and in ice core records dating back as far as 800000 years. One of the strongest El Nino events since at least 1950 dissipated in spring, and a weak La Nina evolved later in the year. Owing at least in part to the combination of El Nino conditions early in the year and... |
| Tipo: Text |
|
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00673/78500/80851.pdf |
| |
|
|
| Russell, Joellen L.; Kamenkovich, Igor; Bitz, Cecilia; Ferrari, Raffaele; Gille, Sarah T.; Goodman, Paul J.; Hallberg, Robert; Johnson, Kenneth; Khazmutdinova, Karina; Marinov, Irina; Mazloff, Matthew; Riser, Stephen; Sarmiento, Jorge L.; Speer, Kevin; Talley, Lynne D.; Wanninkhof, Rik. |
| The Southern Ocean is central to the global climate and the global carbon cycle, and to the climate's response to increasing levels of atmospheric greenhouse gases, as it ventilates a large fraction of the global ocean volume. Global coupled climate models and earth system models, however, vary widely in their simulations of the Southern Ocean and its role in, and response to, the ongoing anthropogenic trend. Due to the region's complex water-mass structure and dynamics, Southern Ocean carbon and heat uptake depend on a combination of winds, eddies, mixing, buoyancy fluxes, and topography. Observationally based metrics are critical for discerning processes and mechanisms, and for validating and comparing climate and earth system models. New observations... |
| Tipo: Text |
Palavras-chave: Southern Ocean; Heat uptake; Carbon uptake; Observationally based metrics. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00673/78491/80788.pdf |
| |
|
|
| Johnson, Kenneth S.; Plant, Joshua N.; Coletti, Luke J.; Jannasch, Hans W.; Sakamoto, Carole M.; Riser, Stephen C.; Swift, Dana D.; Williams, Nancy L.; Boss, Emmanuel; Haentjens, Nils; Talley, Lynne D.; Sarmiento, Jorge L.. |
| The Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) program has begun deploying a large array of biogeochemical sensors on profiling floats in the Southern Ocean. As of February 2016, 86 floats have been deployed. Here the focus is on 56 floats with quality-controlled and adjusted data that have been in the water at least 6 months. The floats carry oxygen, nitrate, pH, chlorophyll fluorescence, and optical backscatter sensors. The raw data generated by these sensors can suffer from inaccurate initial calibrations and from sensor drift over time. Procedures to correct the data are defined. The initial accuracy of the adjusted concentrations is assessed by comparing the corrected data to laboratory measurements made on samples collected... |
| Tipo: Text |
Palavras-chave: Profiling floats; Oxygen sensors; PH sensors; Nitrate sensors; Bio-optical sensors; Southern Ocean. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00662/77398/78993.pdf |
| |
|
|
| Bushinsky, Seth M.; Landschuetzer, Peter; Roedenbeck, Christian; Gray, Alison R.; Baker, David; Mazloff, Matthew R.; Resplandy, Laure; Johnson, Kenneth S.; Sarmiento, Jorge L.. |
| New estimates of pCO(2) from profiling floats deployed by the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project have demonstrated the importance of wintertime outgassing south of the Polar Front, challenging the accepted magnitude of Southern Ocean carbon uptake (Gray et al., 2018, ). Here, we put 3.5 years of SOCCOM observations into broader context with the global surface carbon dioxide database (Surface Ocean CO2 Atlas, SOCAT) by using the two interpolation methods currently used to assess the ocean models in the Global Carbon Budget (Le Quere et al., 2018, ) to create a ship-only, a float-weighted, and a combined estimate of Southern Ocean carbon fluxes (<35 degrees S). In our ship-only estimate, we calculate a mean uptake... |
| Tipo: Text |
Palavras-chave: Southern Ocean; Biogeochemical profiling floats; SOCCOM; Global carbon cycle. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00675/78719/81007.pdf |
| |
|
|
| Gruber, Nicolas; Gloor, Manuel; Fletcher Mikaloff, Sara E.; Doney, Scott C.; Dutkiewicz, Stephanie; Follows, Michael J.; Gerber, Markus; Jacobson, Andrew R.; Joos, Fortunat; Lindsay, Keith; Menemenlis, Dimitris; Mouchet, Anne; Mueller, Simon A.; Sarmiento, Jorge L.; Takahashi, Taro. |
| We synthesize estimates of the contemporary net air-sea CO2 flux on the basis of an inversion of interior ocean carbon observations using a suite of 10 ocean general circulation models (Mikaloff Fletcher et al., 2006, 2007) and compare them to estimates based on a new climatology of the air-sea difference of the partial pressure of CO2 (pCO(2)) (Takahashi et al., 2008). These two independent flux estimates reveal a consistent description of the regional distribution of annual mean sources and sinks of atmospheric CO2 for the decade of the 1990s and the early 2000s with differences at the regional level of generally less than 0.1 Pg C a(-1). This distribution is characterized by outgassing in the tropics, uptake in midlatitudes, and comparatively small... |
| Tipo: Text |
Palavras-chave: Air-sea carbon flux; Carbon flux; Anthropogenic CO2. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00253/36415/34953.pdf |
| |
|
|
| Toyama, Katsuya; Rodgers, Keith B.; Blanke, Bruno; Iudicone, Daniele; Ishii, Masao; Aumont, Olivier; Sarmiento, Jorge L.. |
| We evaluate the output from a widely used ocean carbon cycle model to identify the subduction and obduction (re-emergence) rates of anthropogenic carbon (Cant) for climatological conditions during the World Ocean Circulation Experiment (WOCE) era in 1995 using a new set of Lagrangian diagnostic tools. The principal scientific value of the Lagrangian diagnostics is in providing a new means to connect Cant re-emergence pathways to the relatively rapid renewal timescales of mode waters through the overturning circulation. Our main finding is that for this model with 2.04 PgC/yr of uptake of Cant via gas exchange, the subduction and obduction rates across the base of the mixed layer (MLbase) are 4.96 PgC/yr and 4.50 PgC/yr, respectively, which are twice as... |
| Tipo: Text |
|
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00395/50610/51323.pdf |
| |
|
|
| Rodgers, Keith B.; Key, Robert M.; Gnanadesikan, Anand; Sarmiento, Jorge L.; Aumont, Olivier; Bopp, Laurent; Doney, Scott C.; Dunne, John P.; Glover, David M.; Ishida, Akio; Ishii, Masao; Jacobson, Andrew R.; Lo Monaco, Claire; Maier-reimer, Ernst; Mercier, Herle; Metzl, Nicolas; Perez, Fiz F.; Rios, Aida F.; Wanninkhof, Rik; Wetzel, Patrick; Winn, Christopher D.; Yamanaka, Yasuhiro. |
| Here we use observations and ocean models to identify mechanisms driving large seasonal to interannual variations in dissolved inorganic carbon (DIC) and dissolved oxygen (O-2) in the upper ocean. We begin with observations linking variations in upper ocean DIC and O-2 inventories with changes in the physical state of the ocean. Models are subsequently used to address the extent to which the relationships derived from short-timescale (6 months to 2 years) repeat measurements are representative of variations over larger spatial and temporal scales. The main new result is that convergence and divergence (column stretching) attributed to baroclinic Rossby waves can make a first-order contribution to DIC and O-2 variability in the upper ocean. This results in... |
| Tipo: Text |
|
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00000/11107/7415.pdf |
| |
|
|
| Majkut, Joseph D.; Carter, Brendan R.; Froelicher, Thomas L.; Dufour, Carolina O.; Rodgers, Keith B.; Sarmiento, Jorge L.. |
| The Southern Ocean is critically important to the oceanic uptake of anthropogenic CO2. Up to half of the excess CO2 currently in the ocean entered through the Southern Ocean. That uptake helps to maintain the global carbon balance and buffers transient climate change from fossil fuel emissions. However, the future evolution of the uptake is uncertain, because our understanding of the dynamics that govern the Southern Ocean CO2 uptake is incomplete. Sparse observations and incomplete model formulations limit our ability to constrain the monthly and annual uptake, interannual variability and long-term trends. Float-based sampling of ocean biogeochemistry provides an opportunity for transforming our understanding of the Southern Ocean CO2 flux. In this work,... |
| Tipo: Text |
Palavras-chave: Carbon; Southern Ocean; Observational system simulation experiment. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00290/40115/38747.pdf |
| |
|
|
| Le Quere, Corinne; Raupach, Michael R.; Canadell, Josep G.; Marland, Gregg; Bopp, Laurent; Ciais, Philippe; Conway, Thomas J.; Doney, Scott C.; Feely, Richard A.; Foster, Pru; Friedlingstein, Pierre; Gurney, Kevin; Houghton, Richard A.; House, Joanna I.; Huntingford, Chris; Levy, Peter E.; Lomas, Mark R.; Majkut, Joseph; Metzl, Nicolas; Ometto, Jean P.; Peters, Glen P.; Prentice, I. Colin; Randerson, James T.; Running, Steven W.; Sarmiento, Jorge L.; Schuster, Ute; Sitch, Stephen; Takahashi, Taro; Viovy, Nicolas; Van Der Werf, Guido R.; Woodward, F. Ian. |
| Efforts to control climate change require the stabilization of atmospheric CO2 concentrations. This can only be achieved through a drastic reduction of global CO2 emissions. Yet fossil fuel emissions increased by 29% between 2000 and 2008, in conjunction with increased contributions from emerging economies, from the production and international trade of goods and services, and from the use of coal as a fuel source. In contrast, emissions from land-use changes were nearly constant. Between 1959 and 2008, 43% of each year's CO2 emissions remained in the atmosphere on average; the rest was absorbed by carbon sinks on land and in the oceans. In the past 50 years, the fraction of CO2 emissions that remains in the atmosphere each year has likely increased, from... |
| Tipo: Text |
|
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00218/32907/31397.pdf |
| |
|
| |
|
|
| Gray, Alison R.; Johnson, Kenneth S.; Bushinsky, Seth M.; Riser, Stephen C.; Russell, Joellen L.; Talley, Lynne D.; Wanninkhof, Rik; Williams, Nancy L.; Sarmiento, Jorge L.. |
| Although the Southern Ocean is thought to account for a significant portion of the contemporary oceanic uptake of carbon dioxide (CO2), flux estimates in this region are based on sparse observations that are strongly biased toward summer. Here we present new estimates of Southern Ocean air-sea CO2 fluxes calculated with measurements from biogeochemical profiling floats deployed by the Southern Ocean Carbon and Climate Observations and Modeling project during 2014-2017. Compared to ship-based CO2 flux estimates, the float-based fluxes find significantly stronger outgassing in the zone around Antarctica where carbon-rich deep waters upwell to the surface ocean. Although interannual variability contributes, this difference principally stems from the lack of... |
| Tipo: Text |
Palavras-chave: Air-sea carbon flux; SOCCOM. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00673/78485/80837.pdf |
| |
|
|
| Frolicher, Thomas L.; Sarmiento, Jorge L.; Paynter, David J.; Dunne, John P.; Krasting, John P.; Winton, Michael. |
| The authors assess the uptake, transport, and storage of oceanic anthropogenic carbon and heat over the period 1861-2005 in a new set of coupled carbon-climate Earth system models conducted for the fifth phase of the Coupled Model Intercomparison Project (CMIP5), with a particular focus on the Southern Ocean. Simulations show that the Southern Ocean south of 30 degrees S, occupying 30% of global surface ocean area, accounts for 43% 63% (42 + 5 PgC) of anthropogenic CO2 and 75% 622% (23 + 9 x 10(22) J) of heat uptake by the ocean over the historical period. Northward transport out of the Southern Ocean is vigorous, reducing the storage to 33 +/- 6 Pg anthropogenic carbon and 12 +/- 7 x 10(22) J heat in the region. The CMIP5 models, as a class, tend to... |
| Tipo: Text |
|
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00383/49431/49841.pdf |
| |
|
|
| Johnson, Kenneth S.; Plant, Joshua N.; Dunne, John P.; Talley, Lynne D.; Sarmiento, Jorge L.. |
| Annual nitrate cycles have been measured throughout the pelagic waters of the Southern Ocean, including regions with seasonal ice cover and southern hemisphere subtropical zones. Vertically resolved nitrate measurements were made using in situ ultraviolet spectrophotometer (ISUS) and submersible ultraviolet nitrate analyzer (SUNA) optical nitrate sensors deployed on profiling floats. Thirty-one floats returned 40 complete annual cycles. The mean nitrate profile from the month with the highest winter nitrate minus the mean profile from the month with the lowest nitrate yields the annual nitrate drawdown. This quantity was integrated to 200 m depth and converted to carbon using the Redfield ratio to estimate annual net community production (ANCP) throughout... |
| Tipo: Text |
|
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00662/77397/78994.pdf |
| |
| Registros recuperados: 13 | |
|
|
|
