Dr. Jim Christian

Research Scientist Canadian Centre for Climate Modelling and Analysis SCI A214 Ph: (250)363-8319 FAX: (250) 363-8247 E-mail: Jim.Christian@ec.gc.ca

Research Interests

• Ocean biogeochemical cycles

Education

• PhD 1995, University of Hawaii at Manoa

Publications

• Christian, J.R., R.A. Feely, M. Ishii, R. Murtugudde, and X. Wang, 2008. Testing an ocean carbon model with observed sea surface pCO2 and DIC in the tropical Pacific Ocean. Journal of Geophysical Research doi:10.1029/2007JC004428.[PDF]
• Zahariev, K., J.R. Christian, and K.L. Denman, 2008. Preindustrial, historical, and fertilization simulations using a global ocean carbon model with new parameterizations of iron limitation, calcification, and N2 fixation. Progress in Oceanography 77: 56-82.[PDF]
• Hood, R.R., and J.R. Christian, 2008. Ocean Nitrogen Cycle Modeling. pp. 1445-1495 in DG Capone, DA Bronk, MR Mulholland, and EJ Carpenter, eds., 'Nitrogen in the Marine Environment' (2nd Edition, Elsevier).[Link]
• Dickson, A.G., C.L. Sabine, and J.R. Christian, Eds., 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. [link]
• Denman, K.L., G. Brasseur, A. Chidthaisong, P. Ciais, P.M. Cox, R.E. Dickinson, D. Hauglustaine, C. Heinze, E. Holland, D. Jacob, U. Lohmann, S Ramachandran, P.L. da Silva Dias, S.C. Wofsy and X. Zhang, 2007. Couplings Between Changes in the Climate System and Biogeochemistry. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M.Tignor and H.L. Miller (eds.)]. Cambridge University Press.[PDF]
• Friedrichs, M.A.M., J.A. Dusenberry, L.A. Anderson, R.A. Armstrong, F. Chai, J.R. Christian, S.C. Doney, J. Dunne, M. Fujii, R. Hood, D.J. McGillicuddy, J.K. Moore, M. Schartau, Y.H. Spitz, and J.D. Wiggert, 2007. Assessment of skill and portability in regional marine biogeochemical models: Role of multiple planktonic groups. Journal of Geophysical Research 112, doi:10.1029/2006JC003852[PDF]
• Veillette, J., J. Sarrazin, A.J. Gooday, J. Galeron, J.-C. Caprais, A. Vangriesheim, J. Etoubleau, J.R. Christian, and S.K. Juniper, 2007. Ferromanganese nodule fauna in the Tropical North Pacific Ocean: Species richness, faunal cover and spatial distribution. Deep-Sea Research I 54: 1912-1935.[PDF]
• Christian, J.R., 2007. Advection in plankton models with variable elemental ratios. Ocean Dynamics 57: 63-71.[PDF]
• McKinley, G.A., T. Takahashi, E. Buitenhuis, F. Chai, J.R. Christian, S.C. Doney, C. Le Quéré, I. Lima, R. Murtugudde, L. Shi, and P. Wetzel, 2006. North Pacific carbon cycle response to climate variability on seasonal to decadal timescales. Journal of Geophysical Research, 111, doi:10.1029/2005JC003173[PDF]
• Wang, X., J.R. Christian, R. Murtugudde, and A.J. Busalacchi, 2006. Spatial and temporal variability of the surface water pCO2 and air-sea CO2 flux in the equatorial Pacific during 1980-2003: a basin-scale carbon model. Journal of Geophysical Research 111, doi:10.1029/2005JC002972[PDF]
• Wiggert, J.D., R. Murtugudde, and J.R. Christian, 2006. Annual ecosystem variability in the tropical Indian Ocean: Results of a coupled bio-physical ocean general circulation model. Deep-Sea Research II 53: 644-676.[PDF]
• Wang, X., J.R. Christian, R. Murtugudde, and A.J. Busalacchi, 2006. Spatial and temporal variability in new production in the equatorial Pacific during 1980-2003: physical and biogeochemical controls. Deep-Sea Research II 53: 677-697.[PDF]
• Christian, J.R., 2005. Biogeochemical cycling in the oligotrophic ocean: Redfield and non-Redfield models. Limnology and Oceanography 50: 646-657.[PDF][WebAppendix]
• Wang, X., J.R. Christian, R. Murtugudde, and A.J. Busalacchi, 2005. Ecosystem dynamics and export production in the central and eastern equatorial Pacific: A modeling study of impact of ENSO. Geophysical Research Letters 32, doi: 10.1029/2004GL021538[PDF]
• Christian, J.R., R. Murtugudde, J. Ballabrera-Poy, J., and C.R. McClain, 2004. A ribbon of dark water: phytoplankton blooms in the meanders of the Pacific North Equatorial Countercurrent. Deep-Sea Research II 51: 209-228.[PDF]
• McClain, C.R., S.R. Signorini, and J.R. Christian, 2004. Subtropical gyre variability observed by ocean color satellites. Deep-Sea Research II 51: 281-301
• Murtugudde, R., L. Wang, E. Hackert, J. Beauchamp, J. Christian, and A.J. Busalacchi, 2004. Remote sensing of the Indo-Pacific region: ocean colour, sea level, winds and sea surface temperatures. International Journal of Remote Sensing 25: 1423-1435.
• Christian, J.R., and R. Murtugudde, 2003. Tropical Atlantic variability in a coupled physical-biogeochemical ocean model. Deep-Sea Research II 50: 2947-2969.[PDF]
• Ballabrera-Poy, J., R.G. Murtugudde, J.R. Christian, and A.J. Busalacchi, 2003. Signal-to-noise ratios of observed monthly tropical ocean color. Geophysical Research Letters 30, doi: 10.1029/2003GL016995[PDF]
• Erickson, D.J., J.L. Hernandez, P. Ginoux, W.W. Gregg, C. McClain, and J. Christian, 2003. Atmospheric iron delivery and surface oceanic biological activity in the Southern Ocean and Patagonian region. Geophysical Research Letters 30, doi: 10.1029/2003GL017241[PDF]
• Christian, J.R., M.A. Verschell, R. Murtugudde, A.J. Busalacchi, and C.R. McClain, 2002. Biogeochemical modelling of the tropical Pacific Ocean. I. Seasonal and interannual variability. Deep-Sea Research II 49: 509-543.[PDF]
• Christian, J.R., M.A. Verschell, R. Murtugudde, A.J. Busalacchi, and C.R. McClain, 2002. Biogeochemical modelling of the tropical Pacific Ocean. II. Iron biogeochemistry. Deep-Sea Research II 49: 545-565.[PDF]
• McClain, C.R., J.R. Christian, S.R. Signorini, M.R. Lewis, I. Asanuma, D. Turk, and C. Dupouy, 2002. Satellite ocean color observations of the tropical Pacific Ocean. Deep-Sea Research II 49: 2533-2560.[PDF]
• Christian, J.R., and T.R. Anderson, 2002. Modeling DOM biogeochemistry. pp. 717-755 in D.A. Hansell and C.A. Carlson, eds., Biogeochemistry of marine dissolved organic matter (Academic Press).
• Signorini, S.R., C.R. McClain, J.R. Christian, and C.S. Wong, 2001. Seasonal and interannual variability of phytoplankton, nutrients, TCO2, pCO2, and O2 in the North Pacific (OWS P). Journal of Geophysical Research 106: 31197-31215.[PDF]
• Donachie, S.P., J.R. Christian, and D.M. Karl, 2001. Nutrient regulation of bacterial production and ectoenzyme activities in the subtropical North Pacific Ocean. Deep-Sea Research II, 48: 1719-1732.
• Murtugudde, R., S.R. Signorini, J.R. Christian, A.J. Busalacchi, C.R. McClain, and J. Picaut, 1999. Ocean color variability of the tropical Indo-Pacific basin observed by SeaWiFS during 1997-98. Journal of Geophysical Research 104: 18351-18366.
• Signorini, S.R., R. Murtugudde, C.R. McClain, J.R. Christian, J. Picaut, and A.J. Busalacchi, 1999. Biological and physical signatures in the tropical and subtropical Atlantic. Journal of Geophysical Research 104: 18367-18382.
• Christian, J.R., and D.M. Karl, 1998. Ectoaminopeptidase specificity and regulation in Antarctic marine pelagic microbial communities. Aquatic Microbial Ecology, 15: 303-310.
• Christian, J.R., M.R. Lewis, and D.M. Karl, 1997. Vertical fluxes of carbon, nitrogen and phosphorus in the North Pacific Subtropical Gyre near Hawaii. Journal of Geophysical Research 102: 15667-15677.[PDF]
• Karl, D., R. Letelier, L. Tupas, J. Dore, J. Christian, and D. Hebel, 1997. The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean. Nature 388: 533-538.
• Karl, D.M., J. Christian, J. Dore, D. Hebel, R. Letelier, L. Tupas, and C. Winn, 1996. Seasonal and interannual variability of primary production and particle flux at Station ALOHA. Deep-Sea Research II 43: 539-568.
• Karl, D.M., J.R. Christian, J.E. Dore, and R.M. Letelier, 1996. Microbiological oceanography in the region west of the Antarctic Peninsula: microbial dynamics, nitrogen cycle, and carbon flux. pp. 303-332 in R.M. Ross, E.E. Hofmann and L.B. Quetin, eds., Foundations for ecological research west of the Antarctic Peninsula. (AGU Antarctic Research Series, V. 70)
• Christian, J.R., and D.M. Karl, 1995. Bacterial ectoenzymes in marine waters: activity ratios and temperature responses in three oceanic provinces. Limnology and Oceanography 40: 1042-1049.[PDF]
• Christian, J.R., and D.M. Karl, 1995. Measuring bacterial ectoenzyme activities in marine waters using mercuric chloride as a preservative and a control. Marine Ecology - Progress Series 123: 217-224.
• Winn, C. D., L. Campbell, J. Christian, R.M. Letelier, D.V. Hebel, J.E. Dore, L. Fujieki, and D.M. Karl, 1995. Seasonal variability in the phytoplankton community of the North Pacific Subtropical Gyre. Global Biogeochemical Cycles 9: 605-620.
• Karl, D.M., R. Letelier, D. Hebel, L. Tupas, J. Dore, J. Christian, and C. Winn, 1995. Ecosystem changes in the North Pacific subtropical gyre attributed to the 1991-92 El Niño. Nature 373: 230-234.
• Christian, J.R., and D.M. Karl, 1994. Microbial community structure at the US-JGOFS station ALOHA: inverse methods for estimating biochemical indicator ratios. Journal of Geophysical Research 99: 14269-14276.[PDF]

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