Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines

Bender, 2002 Copin-Montegut, 1988, A new formula for the effect of temperature on the partial pressure of CO2 in seawater, Marine Chemistry, 25, 29, 10.1016/0304-4203(88)90012-6 Corbière, 2007, Interannual and decadal variability of the oceanic carbon sink in the North Atlantic subpolar gyre, Tellus B, 59, 168, 10.1111/j.1600-0889.2006.00232.x Dickson, A.G., Sabine, C.L., Christian, J.R. (Eds.), 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3. Feely, 1998, A new automated underway system for making high precision pCO2 measurements onboard research ships, Analytica Chimica Acta, 377, 185, 10.1016/S0003-2670(98)00388-2 Feely, 2006, Decadal variability of the air–sea CO2 fluxes in the Equatorial Pacific Ocean, Journal of Geophysical Research-Oceans, 111, S90, 10.1029/2005JC003129 Goyet, 1993, Temperature dependence of CO2 fugacity in seawater, Marine Chemistry, 44, 205, 10.1016/0304-4203(93)90203-Z Körtzinger, 2000, The international at-sea intercomparison of fCO2 systems during the R/V Meteor Cruise 36/1 in the North Atlantic Ocean, Marine Chemistry, 72, 171, 10.1016/S0304-4203(00)00080-3 Lüger, 2006, CO2 fluxes in the subtropical and subarctic North Atlantic based on measurements from a volunteer observing ship, Journal of Geophysical Research-Oceans, 111, 6020, 10.1029/2005JC003101 Olsen, 2008, Sea-surface CO2 fugacity in the subpolar North Atlantic, Biogeosciences, 5, 535, 10.5194/bg-5-535-2008 Takahashi, 1961, Carbon dioxide in the atmosphere and in Atlantic Ocean water, Journal of Geophysical Research, 66, 477, 10.1029/JZ066i002p00477 Takahashi, 1993, Seasonal-variation of CO2 and nutrients in the high-latitude surface oceans—a comparative study, Global Biogeochemical Cycles, 7, 843, 10.1029/93GB02263 Takahashi, T., Sutherland, S.C., Wanninkhof, R., Sweeney, C., Feely, R.A., Chipman, D.W., Hales, B., Friederich, G., Chavez, F., Watson, A., Bakker, D.C.E., Schuster, U., Metzl, N., Yoshikawa-Inoue, H., Ishii, M., Midorikawa, T., Sabine, C., Hoppema, M., Olafsson, J., Arnarson, T.S., Tilbrook, B., Johannessen, T., Olsen, A., Bellerby, R., de Baar, H.J.W., Nojiri, Y., Wong, C.S., Delille, B., Bates, N.R., 2009. Climatological mean and decadal change in surface ocean pCO2, and Net Sea–air CO2 flux over the global oceans, Deep-Sea Research II, this issue [doi:10.1016/j.dsr2.2008.12.009]. Trenberth, 2002, The need for a systems approach to climate observations, Bulletin of the American Meteorological Society, 83, 1593, 10.1175/BAMS-83-11-1593 Wanninkhof, 1993, Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods, Marine Chemistry, 44, 189, 10.1016/0304-4203(93)90202-Y Weiss, 1974, Carbon dioxide in water and seawater: the solubility of a non-ideal gas, Marine Chemistry, 2, 203, 10.1016/0304-4203(74)90015-2 Weiss, 1980, Nitrous oxide solubility in water and seawater, Marine Chemistry, 8, 347, 10.1016/0304-4203(80)90024-9 Weiss, 1982, Seasonal effects of temperature and salinity on the partial pressure of CO2 in seawater (Pacific Ocean), Nature, 300, 511, 10.1038/300511a0