Estimating the nitrate concentration from the dissolved oxygen concentration and seawater temperature in the Kuroshio extension, Oyashio, and mixed water regions
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| 024 | 7 | 0 | |a 10.1007/s10872-014-0257-1 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s10872-014-0257-1 | ||
| 245 | 0 | 0 | |a Estimating the nitrate concentration from the dissolved oxygen concentration and seawater temperature in the Kuroshio extension, Oyashio, and mixed water regions |h [Elektronische Daten] |c [Miho Ishizu, Chiho Sukigara, Toshio Suga, Kelvin Richards] |
| 520 | 3 | |a For the purpose of estimating nitrate concentration using the dissolved oxygen concentration and seawater temperature recorded in an instrument such as a profiling float with an oxygen sensor, we examined the relationship between oxygen and nitrate concentrations in the Kuroshio Extension, Oyashio, and mixed water regions (34-43ºN, 140-150ºE) using vertical profile data, which includes temperature, salinity, oxygen, and nitrate, from the World Ocean Database 2005. Examining the NO3/O2 ratio along isotherms, we found a clear linear regression between the oxygen and nitrate concentrations in each potential temperature range, irrespective of water mass and seasonal variation. The slopes represented by the NO3/O2 ratio in each temperature range varied from −0.07 to −0.12. The benefit of analyzing data on constant potential temperature surfaces arises because of the strong dependence of the oxygen saturation of surface waters on temperature. This sets the end point of subducted waters and helps distinguish waters that may have similar preformed nitrate values. Our results suggest that subsequent reminearlization in the subducted water retained the Redfield ratio between N and O2. The estimate of nitrate concentration, by using the oxygen-nitrate relationship discovered in the present study, showed good accuracy with in general a mean error of less than 2.0μmol/kg. The present method has been demonstrated to be a useful tool for estimating the nitrate concentration from temperature and oxygen. | |
| 540 | |a The Oceanographic Society of Japan and Springer Japan, 2014 | ||
| 690 | 7 | |a Oxygen |2 nationallicence | |
| 690 | 7 | |a Nitrate |2 nationallicence | |
| 690 | 7 | |a Mixed water region between Kuroshio and Oyashio |2 nationallicence | |
| 700 | 1 | |a Ishizu |D Miho |u Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, 277-8564, Kashiwa-shi, Chiba, Japan |4 aut | |
| 700 | 1 | |a Sukigara |D Chiho |u Hydrospheric Atmospheric Research Center, Nagoya University, F3-1 (200) Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan |4 aut | |
| 700 | 1 | |a Suga |D Toshio |u Department of Geophysics, Graduate School of Science, Tohoku University, 6-3 Aramaki-aza-Aoba, Aoba-ku, 980-8578, Sendai, Miyagi, Japan |4 aut | |
| 700 | 1 | |a Richards |D Kelvin |u Department of Oceanography, International Pacific Research Center, University of Hawaii at Manoa, 1680 East-West Road, 96822, Honolulu, HI, USA |4 aut | |
| 773 | 0 | |t Journal of Oceanography |d Springer Japan |g 71/1(2015-02-01), 19-26 |x 0916-8370 |q 71:1<19 |1 2015 |2 71 |o 10872 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s10872-014-0257-1 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s10872-014-0257-1 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Ishizu |D Miho |u Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, 277-8564, Kashiwa-shi, Chiba, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Sukigara |D Chiho |u Hydrospheric Atmospheric Research Center, Nagoya University, F3-1 (200) Furo-cho, Chikusa-ku, 464-8601, Nagoya, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Suga |D Toshio |u Department of Geophysics, Graduate School of Science, Tohoku University, 6-3 Aramaki-aza-Aoba, Aoba-ku, 980-8578, Sendai, Miyagi, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Richards |D Kelvin |u Department of Oceanography, International Pacific Research Center, University of Hawaii at Manoa, 1680 East-West Road, 96822, Honolulu, HI, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Journal of Oceanography |d Springer Japan |g 71/1(2015-02-01), 19-26 |x 0916-8370 |q 71:1<19 |1 2015 |2 71 |o 10872 | ||