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Volumn 26, Issue 2, 2012, Pages

The observed evolution of oceanic pCO2 and its drivers over the last two decades

Author keywords

[No Author keywords available]

Indexed keywords

ATLANTIC OCEAN; ATMOSPHERIC CO; BIOLOGICAL PRODUCTION; CARBON SINK; CLIMATE VARIABILITY AND CHANGE; DISSOLVED INORGANIC CARBON; ENHANCED UPTAKE; LIMIT OF DETECTION; NORTH PACIFIC; PACIFIC SECTOR; SEA SURFACE TEMPERATURE (SST); SOUTHERN OCEAN;

EID: 84861369889     PISSN: 08866236     EISSN: None     Source Type: Journal    
DOI: 10.1029/2011GB004095     Document Type: Article
Times cited : (71)

References (63)
  • 1
    • 0035031307 scopus 로고    scopus 로고
    • 2 and biogeochemical properties in the Western North Atlantic subtropical gyre
    • DOI 10.1016/S0967-0645(00)00151-X, PII S096706450000151X
    • Bates, N. (2001), Interannual variability of oceanic CO2 and biogeochemical properties in the western North Atlantic subtropical gyre, Deep Sea Res., PartII, 48, 1507-1528, doi:10.1016/S0967-0645(00)00151-X. (Pubitemid 32434565)
    • (2001) Deep-Sea Research Part II: Topical Studies in Oceanography , vol.48 , Issue.8-9 , pp. 1507-1528
    • Bates, N.R.1
  • 2
    • 36249029901 scopus 로고    scopus 로고
    • 2 sink in the subtropical gyre of the North Atlantic Ocean over the last 2 decades
    • DOI 10.1029/2006JC003759
    • Bates, N. R. (2007), Interannual variability of the oceanic CO2 sink in the subtropical gyre of the North Atlantic Ocean over the last 2 decades, J. Geophys. Res., 112, C09013, doi:10.1029/2006JC003759. (Pubitemid 350120732)
    • (2007) Journal of Geophysical Research C: Oceans , vol.112 , Issue.9
    • Bates, N.R.1
  • 5
    • 67349230837 scopus 로고    scopus 로고
    • 2
    • doi:10.1016/j.dsr2.2009.01.001
    • Chen, C. T., and A. V. Borges (2009), Reconciling opposing views on carbon cycling in the coastal ocean: Continental shelves as sinks and near shore ecosystems as sources of atmospheric CO2, Deep Sea Res., Part II, 56, 578-590, doi:10.1016/j.dsr2.2009.01.001.
    • (2009) Deep Sea Res. Part II , vol.56 , pp. 578-590
    • Chen, C.T.1    Borges, A.V.2
  • 6
    • 0018344317 scopus 로고
    • 2
    • Chen, C. T., and F. J. Millero (1979), Gradual increase of oceanic CO2, Nature, 277, 205-206, doi:10.1038/277205a0. (Pubitemid 9113537)
    • (1979) Nature , vol.277 , Issue.5693 , pp. 205-206
    • Chen, G.T.1    Millero, F.J.2
  • 7
    • 33947373505 scopus 로고    scopus 로고
    • Interannual and decadal variability of the oceanic carbon sink in the North Atlantic subpolar gyre
    • DOI 10.1111/j.1600-0889.2006.00232.x
    • Corbière, A., N. Metzl, G. Reverdin, C. Brunet, and T. Takahashi (2007), Interannual and decadal variability of the oceanic carbon sink in the North Atlantic subpolar gyre, Tellus, Ser. B, 59, 168-178, doi:10.1111/j.1600- 0889.2006.00232.x. (Pubitemid 46455923)
    • (2007) Tellus, Series B: Chemical and Physical Meteorology , vol.59 , Issue.2 , pp. 168-178
    • Corbiere, A.1    Metzl, N.2    Reverdin, G.3    Brunet, C.4    Takahashi, T.5
  • 8
    • 45949128761 scopus 로고
    • A comparison of the equilibrium constants for the dissociation of carbonic acid in seawater media
    • doi:10.1016/0198-0149(87)90021-5
    • Dickson, A. G., and F. J. Millero (1987), A comparison of the equilibrium constants for the dissociation of carbonic acid in seawater media, Deep Sea Res., PartI, 34, 1733-1743, doi:10.1016/0198-0149(87)90021-5.
    • (1987) Deep Sea Res., PartI , vol.34 , pp. 1733-1743
    • Dickson, A.G.1    Millero, F.J.2
  • 9
    • 51449099684 scopus 로고    scopus 로고
    • Southern Ocean mixed-layer depth from Argo float profiles
    • doi:10.1029/2006JC004051
    • Dong, S., J. Sprintall, S. T. Gille, and L. Talley (2008), Southern Ocean mixed-layer depth from Argo float profiles, J. Geophys. Res., 113, C06013, doi:10.1029/2006JC004051.
    • (2008) J. Geophys. Res. , vol.113
    • Dong, S.1    Sprintall, J.2    Gille, S.T.3    Talley, L.4
  • 10
    • 0042467674 scopus 로고    scopus 로고
    • 2 sink in the subtropical North Pacific Ocean
    • DOI 10.1038/nature01885
    • Dore, J. E., R. Lukas, D. W. Sadler, and D. M. Karl (2003), Climate-driven changes to the atmospheric CO2 sink in the subtropical North Pacific Ocean, Nature, 424, 754-757, doi:10.1038/nature01885. (Pubitemid 37021699)
    • (2003) Nature , vol.424 , Issue.6950 , pp. 754-757
    • Dore, J.E.1    Lukas, R.2    Sadler, D.W.3    Karl, D.M.4
  • 11
    • 77958092441 scopus 로고    scopus 로고
    • Fifty-year trends in global ocean salinities and their relationship to broad-scale warming
    • doi:10.1175/2010JCLI3377.1
    • Durack, P. J., and S. E. Wijffels (2010), Fifty-year trends in global ocean salinities and their relationship to broad-scale warming, J. Clim., 23, 4342-4362, doi:10.1175/2010JCLI3377.1.
    • (2010) J. Clim. , vol.23 , pp. 4342-4362
    • Durack, P.J.1    Wijffels, S.E.2
  • 16
    • 17744374064 scopus 로고    scopus 로고
    • Recent trends in global ocean chlorophyll
    • DOI 10.1029/2004GL021808, L03606
    • Gregg, W. W., N. W. Casey, and C. R. McClain (2005), Recent trends in global ocean chlorophyll, Geophys. Res. Lett, 32, L03606, doi:10.1029/ 2004GL021808. (Pubitemid 40578646)
    • (2005) Geophysical Research Letters , vol.32 , Issue.3 , pp. 1-5
    • Gregg, W.W.1    Casey, N.W.2    McClain, C.R.3
  • 17
    • 62249194841 scopus 로고    scopus 로고
    • Carbon cycle: Fickle trends in the ocean
    • doi:10.1038/458155a
    • Gruber, N. (2009), Carbon cycle: Fickle trends in the ocean, Nature, 458, 155-156, doi:10.1038/458155a.
    • (2009) Nature , vol.458 , pp. 155-156
    • Gruber, N.1
  • 18
    • 0037147105 scopus 로고    scopus 로고
    • Interannual variability in the North Atlantic ocean carbon sink
    • DOI 10.1126/science.1077077
    • Gruber, N., C. D. Keeling, and N. R. Bates (2002), Interannual variability in the North Atlantic Ocean carbon sink, Science, 298, 2374-2378. (Pubitemid 36014207)
    • (2002) Science , vol.298 , Issue.5602 , pp. 2374-2378
    • Gruber, N.1    Keeling, C.D.2    Bates, N.R.3
  • 19
    • 33750617761 scopus 로고    scopus 로고
    • Robust responses of the hydrological cycle to global warming
    • DOI 10.1175/JCLI3990.1
    • Held, I. M., and B. J. Soden (2006), Robust responses of the hydrological cycle to global warming, J. Clim., 19, 5686-5699, doi:10.1175/JCLI3990.1. (Pubitemid 44817044)
    • (2006) Journal of Climate , vol.19 , Issue.21 , pp. 5686-5699
    • Held, I.M.1    Soden, B.J.2
  • 20
    • 0029413003 scopus 로고
    • 2)in surface waters of the western North Pacific, 1984-1993
    • Inoue, H. Y., H. Matsuda, M. Ishii, K. Fushimi, I. Hirota, and Y. Takasugi (1995), Long-term trend of the partial pressure of carbon dioxide (pCO2) waters of the western North Pacific, 1984-1993, Tellus, Ser. B, 47, 391-413, doi:10.1034/j.1600-0889.47.issue4.2.x. (Pubitemid 26441940)
    • (1995) Tellus, Series B , vol.47 B , Issue.4 , pp. 391-413
    • Inoue, H.Y.1
  • 21
    • 67349117283 scopus 로고    scopus 로고
    • 2 in the western equatorial Pacific warm/fresh water
    • doi:10.1016/j.dsr2.2009.01.002
    • Ishii, M., et al. (2009), Spatial variability and decadal trend of the oceanic CO2 in the western equatorial Pacific warm/fresh water, Deep Sea Res., Part II, 56, 591-606, doi:10.1016/j.dsr2.2009.01.002.
    • (2009) Deep Sea Res., Part II , vol.56 , pp. 591-606
    • Ishii, M.1
  • 22
    • 15944398982 scopus 로고    scopus 로고
    • Seasonal and long-term dynamics of the upper ocean carbon cycle at Station ALOHA near Hawaii
    • DOI 10.1029/2004GB002227, GB4006
    • Keeling, C. D., H. Brix, and N. Gruber (2004), Seasonal and long-term dynamics of the upper ocean carbon cycle at Station ALOHA near Hawaii, Global Biogeochem. Cycles, 18, GB4006, doi:10.1029/2004GB002227. (Pubitemid 40440568)
    • (2004) Global Biogeochemical Cycles , vol.18 , Issue.4 , pp. 1-26
    • Keeling, C.D.1    Brix, H.2    Gruber, N.3
  • 24
    • 85006518712 scopus 로고    scopus 로고
    • The CARINA data synthesis project: Introduction and overview
    • doi:10.5194/essd-2-105-2010
    • Key, R. M., et al. (2010), The CARINA data synthesis project: Introduction and overview, Earth Syst. Sci. Data, 2, 105-121, doi:10.5194/essd-2-105-2010.
    • (2010) Earth Syst. Sci. Data , vol.2 , pp. 105-121
    • Key, R.M.1
  • 26
    • 34548252504 scopus 로고    scopus 로고
    • 2 uptake
    • DOI 10.1029/2006GB002714
    • Lenton, A., and R. J. Matear (2007), Role of the Southern Annular Mode (SAM) in Southern Ocean CO2 uptake, Global Biogeochem. Cycles, 21, GB2016, doi:10.1029/2006GB002714. (Pubitemid 47323965)
    • (2007) Global Biogeochemical Cycles , vol.21 , Issue.2
    • Lenton, A.1    Matear, R.J.2
  • 27
    • 34548239365 scopus 로고    scopus 로고
    • 2
    • DOI 10.1029/2005GB002620
    • Lenton, A., R. J. Matear, and B. Tilbrook (2006), Design of an observational strategy for quantifying the Southern Ocean uptake of CO2, Global Biogeochem. Cycles, 20, GB4010, doi:10.1029/2005GB002620. (Pubitemid 350284680)
    • (2006) Global Biogeochemical Cycles , vol.20 , Issue.4
    • Lenton, A.1    Matear, R.J.2    Tilbrook, B.3
  • 28
    • 67349169122 scopus 로고    scopus 로고
    • 2 sampling now and in the future
    • doi:10.1016/j.dsr2.2008.12.008
    • Lenton, A., L. Bopp, and R. J. Matear (2009a), Strategies for high-latitude northern hemisphere CO2 sampling now and in the future, Deep Sea Res., Part II, 56, 523-532, doi:10.1016/j.dsr2.2008.12.008.
    • (2009) Deep Sea Res., Part II , vol.56 , pp. 523-532
    • Lenton, A.1    Bopp, L.2    Matear, R.J.3
  • 29
    • 68749119460 scopus 로고    scopus 로고
    • Stratospheric ozone depletion reduces ocean carbon uptake and enhances ocean acidification
    • doi:10.1029/2009GL038227
    • Lenton, A., F. Codron, L. Bopp, N. Metzl, P. Cadule, A. Tagliabue, and J. Le Sommer (2009b), Stratospheric ozone depletion reduces ocean carbon uptake and enhances ocean acidification, Geophys. Res. Lett., 36, L12606, doi:10.1029/2009GL038227.
    • (2009) Geophys. Res. Lett. , vol.36
    • Lenton, A.1    Codron, F.2    Bopp, L.3    Metzl, N.4    Cadule, P.5    Tagliabue, A.6    Le Sommer, J.7
  • 33
    • 23844497394 scopus 로고    scopus 로고
    • Impact of the Southern Annular Mode on Southern Ocean circulation and biology
    • DOI 10.1029/2005GL022727, L11603
    • Lovenduski, N. S., and N. Gruber (2005), Impact of the Southern Annular Mode on Southern Ocean circulation and biology, Geophys. Res. Lett., 32, L11603, doi:10.1029/2005GL022727. (Pubitemid 41174828)
    • (2005) Geophysical Research Letters , vol.32 , Issue.11 , pp. 1-4
    • Lovenduski, N.S.1    Gruber, N.2
  • 34
    • 34548203260 scopus 로고    scopus 로고
    • 2 outgassing in the Southern Ocean from a positive phase of the Southern Annular Mode
    • DOI 10.1029/2006GB002900
    • Lovenduski, N., N. Gruber, S. C. Doney, and I. D. Lima (2007), Enhanced CO2 outgassing in the Southern Ocean from a positive phase of the Southern Annular Mode, Global Biogeochem. Cycles, 21, GB2026, doi:10.1029/2006GB002900. (Pubitemid 47323974)
    • (2007) Global Biogeochemical Cycles , vol.21 , Issue.2
    • Lovenduski, N.S.1    Gruber, N.2    Doney, S.C.3    Lima, I.V.4
  • 35
    • 0034082286 scopus 로고    scopus 로고
    • 2 in gas and seawater at equilibrium
    • DOI 10.1016/S0304-4203(00)00022-0, PII S0304420300000220
    • Lueker, T. J., A. G. Dickson, and C. D. Keeling (2000), Ocean pCO2 calculated from dissolved inorganic carbon, alkalinity, and equations for K1 and K2: Validation based on laboratory measurements of CO2 in gas and seawater at equilibrium, Mar. Chem., 70, 105-119, doi:10.1016/S0304-4203(00)00022-0. (Pubitemid 30347669)
    • (2000) Marine Chemistry , vol.70 , Issue.1-3 , pp. 105-119
    • Lueker, T.J.1    Dickson, A.G.2    Keeling, C.D.3
  • 36
    • 17744412992 scopus 로고    scopus 로고
    • 2: What does it respond to?
    • doi:10.1029/2003GB002102
    • Mahadevan, A., M. Lévy, and L. Mémery (2004), Mesoscale variability of sea surface pCO2: What does it respond to?, Global Biogeochem. Cycles, 18, GB1017, doi:10.1029/2003GB002102.
    • (2004) Global Biogeochem. Cycles , vol.18
    • Mahadevan, A.1    Lévy, M.2    Mémery, L.3
  • 37
    • 80052341169 scopus 로고    scopus 로고
    • Convergence of atmospheric and North Atlantic carbon dioxide trends on multi-decadal timescales
    • doi:10.1038/ngeo1193
    • McKinley, G. A., A. R. Fay, T. Takahashi, and N. Metzl (2011), Convergence of atmospheric and North Atlantic carbon dioxide trends on multi-decadal timescales, Nat. Geosci., 4, 606-610, doi:10.1038/ngeo1193.
    • (2011) Nat. Geosci. , vol.4 , pp. 606-610
    • McKinley, G.A.1    Fay, A.R.2    Takahashi, T.3    Metzl, N.4
  • 38
    • 84983858016 scopus 로고
    • Measurement of the apparent dissociation constants of carbonic acid in seawater at atmospheric pressure
    • doi:10.4319/lo.1973.18.6.0897
    • Mehrbach, C., C. H. Culberson, J. E. Hawley, and R. M. Pytkowicz (1973), Measurement of the apparent dissociation constants of carbonic acid in seawater at atmospheric pressure, Limnol. Oceanogr., 18, 897-907, doi:10.4319/lo.1973.18. 6.0897.
    • (1973) Limnol. Oceanogr. , vol.18 , pp. 897-907
    • Mehrbach, C.1    Culberson, C.H.2    Hawley, J.E.3    Pytkowicz, R.M.4
  • 39
    • 67349176744 scopus 로고    scopus 로고
    • Decadal increase of oceanic carbon dioxide in southern Indian Ocean surface waters 1991-2007
    • doi:10.1016/j.dsr2.2008.12.007
    • Metzl, N. (2009), Decadal increase of oceanic carbon dioxide in southern Indian Ocean surface waters (1991-2007), Deep Sea Res., Part II, 56, 607-619, doi:10.1016/j.dsr2.2008.12.007.
    • (2009) Deep Sea Res.Part II , vol.56 , pp. 607-619
    • Metzl, N.1
  • 41
    • 77958459472 scopus 로고    scopus 로고
    • 2 growth rate in the North Atlantic subpolar gyre 1993-2008) revealed by winter observations
    • doi:10.1029/2009GB003658
    • Metzl, N., et al. (2010), Recent acceleration of the sea surface fCO2 growth rate in the North Atlantic subpolar gyre (1993-2008) revealed by winter observations, Global Biogeochem. Cycles, 24, GB4004, doi:10.1029/2009GB003658.
    • (2010) Global Biogeochem. Cycles , vol.24
    • Metzl, N.1
  • 42
    • 20444462385 scopus 로고    scopus 로고
    • 2 sink in the western subtropical North Pacific
    • DOI 10.1029/2004GL021952, L05612
    • Midorikawa, T., K. Nemoto, H. Kamiya, M. Ishii, and H. Y. Inoue (2005), Persistently strong oceanic CO2 sink in the western subtropical North Pacific, Geophys. Res. Lett., 32, L05612, doi:10.1029/2004GL021952. (Pubitemid 40815108)
    • (2005) Geophysical Research Letters , vol.32 , Issue.5 , pp. 1-4
    • Midorikawa, T.1    Nemoto, K.2    Kamiya, H.3    Ishii, M.4    Inoue, H.Y.5
  • 43
    • 0027847167 scopus 로고
    • 2 measurements in the equatorial Pacific
    • Millero, F. J., R. H. Bryne, R. Wanninkhof, R. A. Feely, T. Clayton, P. Murphy, and M. F. Lamb (1993), The internal consistency of CO2 measurements in the equatorial Pacific, Mar. Chem., 44, 269-280, doi:10.1016/0304-4203(93)90208- 6. (Pubitemid 24430333)
    • (1993) Marine Chemistry , vol.44 , Issue.2-4 , pp. 269-280
    • Millero, F.J.1
  • 44
    • 84886403347 scopus 로고    scopus 로고
    • 2 fluxes
    • Venice, Italy 21-25 September 2009, edited by J. Hall D. E. Harrison, and D. Stammer, ESA Publ., WPP-306, Eur. Space Agency, Paris doi:10.5270/ OceanObs09.cwp.64
    • Monteiro, P., et al. (2010), A global sea surface carbon observing system: Assessment of changing sea surface CO2 and air-sea CO2 fluxes, in Proceedings of the OceanObs'09: Sustained Ocean Observations and Information for Society Conference, Venice, Italy, 21-25 September 2009, edited by J. Hall, D. E. Harrison, and D. Stammer, ESA Publ., WPP-306, Eur. Space Agency, Paris, doi:10.5270/OceanObs09.cwp.64.
    • (2010) Proceedings of the OceanObs'09: Sustained Ocean Observations and Information for Society Conference
    • Monteiro, P.1
  • 45
    • 33645644721 scopus 로고    scopus 로고
    • 2 disequilibrium and its rate of change in the eastern subpolar North Atlantic 1972-1989
    • doi:10.1029/2005GL025425
    • Omar, A. M., and A. Olsen (2006), Reconstructing the time history of the air-sea CO2 disequilibrium and its rate of change in the eastern subpolar North Atlantic, 1972-1989, Geophys. Res. Lett., 33, L04602, doi:10.1029/2005GL025425.
    • (2006) Geophys. Res. Lett. , vol.33
    • Omar, A.M.1    Olsen, A.2
  • 46
    • 41849097427 scopus 로고    scopus 로고
    • Ocean's least productive waters are expanding
    • DOI 10.1029/2007GL031745
    • Polovina, J. J., E. A. Howell, and M. Abecassis (2008), Ocean's least productive waters are expanding, Geophys. Res. Lett., 35, L03618, doi:10.1029/2007GL031745. (Pubitemid 351492934)
    • (2008) Geophysical Research Letters , vol.35 , Issue.3
    • Polovina, J.J.1    Howell, E.A.2    Abecassis, M.3
  • 48
    • 0036648346 scopus 로고    scopus 로고
    • An improved in situ and satellite SST analysis for climate
    • doi:10.1175/1520-0442(2002)015<1609:AIISAS> 2.0.CO;2
    • Reynolds, R. W., N. A. Rayner, T. M. Smith, D. C. Stokes, and W. Wang (2002), An improved in situ and satellite SST analysis for climate, J. Clim., 15, 1609-1625, doi:10.1175/1520-0442(2002)015 2.0.CO;2.
    • (2002) J. Clim. , vol.15 , pp. 1609-1625
    • Reynolds, R.W.1    Rayner, N.A.2    Smith, T.M.3    Stokes, D.C.4    Wang, W.5
  • 50
    • 1942455454 scopus 로고    scopus 로고
    • 2 uptake rate
    • doi:10.1023/B:JOCE.0000038315.23875.ae
    • Sabine, C. L., R. A. Feely, Y. W. Watanabe, and M. Lamb (2004b), Temporal evolution of the North Pacific CO2 uptake rate, J. Oceanogr., 60, 5-15, doi:10.1023/B:JOCE.0000038315.23875.ae.
    • (2004) J. Oceanogr. , vol.60 , pp. 5-15
    • Sabine, C.L.1    Feely, R.A.2    Watanabe, Y.W.3    Lamb, M.4
  • 53
  • 56
    • 37349011283 scopus 로고    scopus 로고
    • 2 difference
    • NOAA Off. of Global Programs, Washington D. C
    • Takahashi, T., and C. Sweeney (2002), Errors in sea-air CO2 flux due to time-space ocean sampling strategies for sea-air pCO2 difference, in A Large-Scale CO2 Observing Plan: In Situ Oceans and Atmosphere (LSCOP), pp. 177-183, NOAA Off. of Global Programs, Washington, D. C.
    • (2002) 2 Observing Plan: In Situ Oceans and Atmosphere (LSCOP) , pp. 177-183
    • Takahashi, T.1    Sweeney, C.2
  • 57
    • 0027840624 scopus 로고
    • 2 and nutrients in the high-latitude surface oceans: A comparative study
    • Takahashi, T., J. Olafsson, J. G. Goddard, D. W. Chipman, and S. C. Sutherland (1993), Seasonal variation of CO2 and nutrients in the high-latitude surface oceans: A comparative study, Global Biogeochem. Cycles, 7, 843-878, doi:10.1029/93GB02263. (Pubitemid 24430526)
    • (1993) Global Biogeochemical Cycles , vol.7 , Issue.4 , pp. 843-878
    • Takahashi, T.1    Olafsson, J.2    Goddard, J.G.3    Chipman, D.W.4    Sutherland, S.C.5
  • 59
    • 33846166084 scopus 로고    scopus 로고
    • 2 in the North Pacific: A synthesis of 35 years of observations
    • DOI 10.1029/2005JC003074
    • Takahashi, T., S. C. Sutherland, R. A. Feely, and R. Wanninkhof (2006), Decadal change of the surface water pCO2 in the North Pacific: A synthesis of 35 years of observations, J. Geophys. Res., 111, C07S05, doi:10.1029/2005JC003074. (Pubitemid 46075300)
    • (2006) Journal of Geophysical Research C: Oceans , vol.111 , Issue.7
    • Takahashi, T.1    Sutherland, S.C.2    Feely, R.A.3    Wanninkhof, R.4
  • 60
    • 67349203113 scopus 로고    scopus 로고
    • 2 flux over the global oceans
    • doi:10.1016/j.dsr2.2008.12.009
    • Takahashi, T., et al. (2009), Climatological mean and decadal change in surface ocean pCO2, and net sea-air CO2 flux over the global oceans, Deep Sea Res., Part II, 56, 554-577, doi:10.1016/j.dsr2.2008.12.009.
    • (2009) Deep Sea Res., Part II , vol.56 , pp. 554-577
    • Takahashi, T.1


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