Estimating mixed layer nitrate in the North Atlantic Ocean

Biogeosciences

Volumn 7, Issue 3, 2010, Pages 795-807

  Steinhoff, T ^a   Friedrich, T ^b   Hartman, S E ^c   Oschlies, A ^a   Wallace, D W R ^a   Kortzinger A ^a  

^a GEOMAR HELMHOLTZ CENTRE FOR OCEAN RESEARCH KIEL   (Germany)

^b UNIVERSITY OF HAWAII   (United States)

^c NATIONAL OCEANOGRAPHY CENTRE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ARTIFICIAL NEURAL NETWORK; DATA SET; MERCHANT SHIP; MIXED LAYER; MULTIPLE REGRESSION; NITRATE; SEA SURFACE TEMPERATURE; SURFACE WATER;

ATLANTIC OCEAN; ATLANTIC OCEAN (NORTH);

EID: 77649254866     PISSN: 17264170     EISSN: 17264189     Source Type: Journal    
DOI: 10.5194/bg-7-795-2010     Document Type: Article

References (51)

1. 2 sink in the subtropical gyre of the North Atlantic Ocean over the last 2 decades, J. Geophys. Res., 112, C09013, doi:10.1029/2006JC003759, 2007.
2. Chierici, M., Olsen, A., Johannessen, T., Trinañes, J., and Wanninkhof, R.: Algorithms to estimate the carbon dioxide uptake in the northern North Atlantic using shipboard observations, satellite and ocean analysis data, Deep-Sea Res. II, 56, 630-639, 2009.
3. Cianca, A., Helmke, P., Mouriño, B., Rueda, M. J., Llinás, O., and Neuer, S.: Decadal analysis of hydrography and in situ nutrient budgets in the western and eastern North Atlantic subtropical gyre, J. Geophys. Res., 112, C07025, doi:10.1029/2006JC003788, 2007.
4. Corbière, A., Metzl, N., Reverdin, G., Brunet, C., and Takahashi, T.: Interannual and decadal variability of the oceanic carbon sink in the North Atlantic subpolar gyre, Tellus, 59B, 168-178, 2007.
5. de Boyer Montégut, C., Madec, G., Fischer, A. S., Lazar, A., and Iudicone, D.: Mixed layer depth over the global ocean: An examination of profile data and profile-based climatology, J. Geophys. Res., 109, C12003, doi:10.1029/2004JC002378, 2004.
6. de Coëtlogon, G. and Frankignoul, C.: The persistence of Winter Sea Surface Temperature in the North Atlantic, J. Climate, 16, 1364-1377, 2003.
7. 2 air-sea flux biases in a North Atlantic carbon-cycle model, Global Biogeochem. Cy., 20, GB2008, doi:10.1029/2005GB002521, 2006.
8. Emery, W., Brandt, P., Funk, A., and Böning, C.: A comparison of sea surface temperatures from microwave remote sensing of the Labrador Sea with in situ measurements and model simulations, J. Geophys. Res., 111, C12013, doi:10.1029/2006JC003578, 2006.
9. 2 from satellite data: A methodological study, J. Geophys. Res., 114, C03020, doi:10.1029/2007JC004646, 2009a.
10. 2 maps estimated from ARGO float data - a model study, J. Geophys. Res., 114, C10012, doi:10.1029/2009JC005322, 2009b.
11. Garcia, H., Locarnini, R., Boyer, T., and Antonov, J.: Volume 4: Nutrients (phosphate, nitrate, silicate), in: World Ocean Atlas 2005, edited by: Ed. NOAA Atlas NESDIS 64, U. G. P. O., S. Levitus, 2006.
12. Garside, C. and Garside, J. C.: Euphotic-zone nutrient algorithms for the NABE and EqPac study site, Deep-Sea Res. II, 42, 335-347, 1995.
13. Glover, D. M. and Brewer, P. G.: Estimates of wintertime mixed layer nutrient concentration in the North Atlantic, Deep-Sea Res., 35, 1525-1546, 1988.
14. Goes, J. I., Saino, T., Oaku, H., Ishizaka, J., Wong, C. S., and Nojiri, Y.: Basin scale estimates of sea surface nitrate and new production from remotely sensed sea surface temperature and chlorophyll, Geophys. Res. Lett., 27, 1263-1266, 2000.
15. González-Dávila, M., Santana-Casiano, J. M., and González-Dávila, E. F.: Interannual variability of the upper ocean carbon cycle in the northeast Atlantic Ocean, Geophys. Res. Lett., 34, L07608, doi:10.1029/2006GL028145, 2007.
16. Hansen, H. and Koroleff, F.: Determination of nutrients, in: Methods of seawater analysis, edited by: Grasshoff, K., Kremling, K., and Erhardt, M., Verlag Chemie, Weinheim, Germany, 159-228, 1999.
17. Hartman, S. E., Larkin, K. E., Lampitt, R. S., Lankhorst, M., and Hydes, D. J.: Seasonal and inter-annual biogeochemical variations in the Porcupine Abyssal Plain 2003-2005 associated with winter mixing and surface circulation, Deep Sea Res. II, In Press, doi: 10.1016/j.dsr2.2010.01.007, 2010.
18. Hydes, D., Gall, A. L., Miller, A., Brockmann, U., Raabe, T., Hol-ley, S., Alvarez-Salgado, X., Antia, A., Balzer, W., L. Chou, Elskens, M., Helder, W., Joint, I., and Orren, M.: Supply and demand of nutrients and dissolved organic matter at and across the NW European shelf break in relation to hydrography and bio-geochemical activity, Deeep-Sea Res. II, 48, 3023-3047, 2001.
19. 2 in the North Atlantic from VOS lines in-situ measurements: parameters needed to generate seasonally mean maps, Ann. Geophys., 25, 2247-2257, 2007, http://www.ann-geophys.net/25/2247/2007/.
20. Kähler, P. and Koeve, W.: Marine dissolved organic matter: can its C:N Ratio explain carbon overconsumption?, Deep Sea Res. I, 48, 49-62, 2001.
21. Kamykowski, D. and Zentara, S.-J.: Predicting plant nutrient concentration from temperature and sigma-t in the upper Kilometer of the world ocean, Deep-Sea Res. A, 33, 89-105, 1986.
22. Kamykowski, D., Zentara, S.-J., Morrison, J. M., and Switzer, A. C.: Dynamic global patterns of nitrate, phosphate, silicate, and iron, Global Biogeochem. Cy., 16(4), 1077, doi:10.1029/2001GB001640, 2002.
23. Kara, A. B., Rochford, P. A., and Hurlburt, H. E.: Mixed layer depth variability over the global ocean, J. Geophys. Res., 108(C3), 3079, doi:10.1029/2000JC000736, 2003.
24. Koeve, W.: Wintertime nutrients in the Noth Atlantic - new approaches and implications for new production estimates, Mar. Chem., 74, 245-260, 2001.
25. Kohonen, T.: Self-Organized Formation of Topologically Correct Feature Maps, Biol. Cybern., 43, 59-69, 1982.
26. Körtzinger, A., Koeve, W., Kähler, P., and Mintrop, L.: C:N ratios in the mixed layer during the productive season in the northeast Atlantic Ocean, Deep-sea Res. I, 48, 661-688, 2001.
27. 2 cycle at 49° N/16.5° W in the northeastern Atlantic Ocean and what it tells us about biological productivity, J. Geophys. Res., 113, C04020, doi: 10.1029/2007JC004347, 2008.
28. 2 data, Tellus, 57B, 375-384, 2005.
29. Longhurst, A. R.: Ecological geography of the sea, Academic Press, Boston, 2nd edn., 2007.
30. Lorbacher, K., Dommenget, D., Niiler, P., and Köhl, A.: Ocean mixed layer depth: A subsurface proxy of ocean-atmosphere variability, J. Geophys. Res., 111, C07010, doi:10.1029/2003JC002157, 2006.
31. 2 varability in the midlatitude North Atlantic Ocean during a full annual cycle, Global Biochem. Cy., 18, GB3023, doi:10. 1029/2003GB002200, 2004.
32. 2 flux in the North Atlantic estimated from sattelite and ARGO profiling data, Tech. rep., NOAA, OAR AOML-96, 2008.
33. Marshall, J.: CLIMODE: a mode water dynamics experiment in support of CLIVAR, Clivar Variations, 3, No. 2, 8-14, 2005.
34. Minas, H. J. and Codespoti, L. A.: Estimates of primary production by observation of changes in the mesoscale nitrate field, ICES Mar. Sci. Symp., 197, 215-235, 1993.
35. Monterey, G. and Levitus, S.: Seasonal Variability of the Mixed Layer Depth for the World Ocean, in: NOAA Atlas NESDIS 14, US Gov. Printing Office, Wash., DC, 1997.
36. 2 in the Oceans, CGER/NIES, 1999.
37. Oliver, M. J. and Irwin, A. J.: Objective global ocean biogeographic provinces, Geoph. Res. Lett., 35, L15601, doi:10.1029/2008/GL034238, 2008.
38. 2 in the Caribbean Sea estimated using in situ and remote sensing data, Remote Sens. Environ., 89, 309-325, 2004.
39. 2 data by using satellite SST and Chla, Int. J. Remote. Sens., 25(19), 3803-3815, 2004.
40. Oschlies, A.: Nutrient supply to the surface waters of the North Atlantic: A model study, J. Geophys. Res., 107, 3046, doi:10. 1029/2000JC000275, 2002.
41. Oschlies, A., Koeve, W., and Garçon, V.: An eddy-permitting coupled physical-biological model of the North Atlantic. Part 2: Ecosystem dynamics and comparison with satellite and JGOFS local studies data, Global Biogeochem. Cy., 14, 499-523, 2000.
42. Price, J. F., Weller, R. A., and Pinkel, R.: Diurnal Cycling: Observations and Models of the Upper Ocean Response to, J. Geophys. Res., 91, 8411-8427, 1986.
43. Redfield, A. C., Ketchum, B. H., and Richards, F. A.: The influence of organisms on the composition of seawater, in: The Sea, Vol.2, edited by: Hill, M., vol. 2, 26-77, Interscience, New York, 1963.
44. Sherlock, V., Pickmere, S., Currie, K., Hadfield, M., Nodder, S., and Boyd, P. W.: Predictive accuracy of temperature-nitrate relationships for the oceanic mixed layer of the New Zealand region, J. Geophys. Res., 112, C06010, doi:10.1029/2006JC003562, 2007.
45. Switzer, A. C., Kamykowski, D., and Zentara, S.-J.: Mapping nitrate in the global ocean using remotely sensed sea surface temperature, J. Geophys. Res., 108(C8), 3280, doi:10.1029/2000JC000444, 2003.
46. Takahashi, T., Broeker, W. S., and Langer, S.: Redfield Ratio Based on Chemical Data from Isopycnal Surfaces, J. Geophys. Res., 90, 6907-6924, 1985.
47. 2 and Nutrients in the High-Latitude Surface Oceans: a comparative study, Global Biogeochem. Cy., 7, 843-878, 1993.
48. 2 Variability and Vulnerabilities, 2009.
49. 2 distribution in the North Atlantic using a self-organizing neural network, Biogeosciences, 6, 1405-1421, 2009, http://www.biogeosciences.net/6/1405/2009/.
50. Thomson, R. E. and Fine, I. V.: Estimating Mixed Layer Depth from Oceanic Profile Data, J. Atmos. Ocean. Tech., 20, 319-329, 2002.
51. Watson, A. J., Robinson, C., Robinson, J., Williams, P., and Fasham, M.: Spatial variability in the sink for atmospheric carbon dioxide in the North Atlantic, Nature, 350, 50-53, 1991.