"-------------------------------------------------------------------------------------------" " Monthly atmospheric C13 concentrations (per mil) derived from flask air samples " " Baja California Sur, Mexico: Latitude 23.3°N Longitude 110.2°W Elevation 4m " " " " Source: R. F. Keeling, S. C. Piper, A. F. Bollenbacher and S. J. Walker " " Scripps CO2 Program ( http://scrippsco2.ucsd.edu ) " " Scripps Institution of Oceanography (SIO) " " University of California " " La Jolla, California USA 92093-0244 " " " " Status of data and correspondence: " " " " These data are subject to revision based on recalibration of standard gases. Questions " " about the data should be directed to Dr. Ralph Keeling (rkeeling@ucsd.edu) and " " and Dr. Stephen Piper (scpiper@popmail.ucsd.edu), Scripps CO2 Program. " " " " Flask data in this file through 14-Feb-2009 last updated 07-Oct-2010 " " " "-------------------------------------------------------------------------------------------" " " " Please cite as: " " " " C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and " " H. A. Meijer, Exchanges of atmospheric CO2 and 13CO2 with the terrestrial biosphere and " " oceans from 1978 to 2000. I. Global aspects, SIO Reference Series, No. 01-06, Scripps " " Institution of Oceanography, San Diego, 88 pages, 2001. " " " " If it is necessary to cite a peer-reviewed article, please cite as: " " " " C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and " " H. A. Meijer, Atmospheric CO2 and 13CO2 exchange with the terrestrial biosphere and " " oceans from 1978 to 2000: observations and carbon cycle implications, pages 83-113, " " in "A History of Atmospheric CO2 and its effects on Plants, Animals, and Ecosystems", " " editors, Ehleringer, J.R., T. E. Cerling, M. D. Dearing, Springer Verlag, " " New York, 2005. " " " "-------------------------------------------------------------------------------------------" " " " The data file below contains 10 columns. Columns 1-4 give the dates in several redundant " " formats. Column 5 below gives monthly isotope concentrations in per-mil. This is the " " standard version of the data most often sought. The monthly values have been adjusted " " to 24:00 hours on the 15th of each month. Column 6 gives the same data after a seasonal " " adjustment to remove the quasi-regular seasonal cycle. The adjustment involves " " subtracting from the data a 4-harmonic fit with a linear gain factor. Column 7 is a " " smoothed version of the data generated from a stiff cubic spline function plus 4-harmonic " " functions with linear gain. Column 8 is the same smoothed version with the seasonal " " cycle removed. Column 9 is identical to Column 5 except that the missing values from " " Column 5 have been filled with values from Column 7. Column 10 is identical to Column 6 " " except missing values have been filled with values from Column 8. Missing values are " " denoted by -99.99 " "" Yr, Mn, Date, Date, C13,seasonally, fit, seasonally, C13, seasonally , , , , , adjusted, ,adjusted fit, filled,adjusted filled , , Excel, , [ppm], [ppm] , [ppm], [ppm], [ppm], [ppm] 1997, 01, 35445, 1997.0411, -8.11, -8.06, -99.99, -99.99, -8.11, -8.06 1997, 02, 35476, 1997.1260, -8.09, -7.99, -8.12, -8.02, -8.09, -7.99 1997, 03, 35504, 1997.2027, -8.21, -8.07, -8.17, -8.03, -8.21, -8.07 1997, 04, 35535, 1997.2877, -8.23, -8.04, -8.22, -8.03, -8.23, -8.04 1997, 05, 35565, 1997.3699, -8.22, -8.04, -8.22, -8.03, -8.22, -8.04 1997, 06, 35596, 1997.4548, -8.09, -8.02, -8.11, -8.04, -8.09, -8.02 1997, 07, 35626, 1997.5370, -99.99, -99.99, -7.95, -8.04, -7.95, -8.04 1997, 08, 35657, 1997.6219, -7.83, -8.04, -7.84, -8.05, -7.83, -8.04 1997, 09, 35688, 1997.7068, -7.85, -8.07, -7.84, -8.05, -7.85, -8.07 1997, 10, 35718, 1997.7890, -7.87, -8.03, -7.90, -8.06, -7.87, -8.03 1997, 11, 35749, 1997.8740, -7.98, -8.05, -8.00, -8.06, -7.98, -8.05 1997, 12, 35779, 1997.9562, -8.08, -8.07, -8.08, -8.07, -8.08, -8.07 1998, 01, 35810, 1998.0411, -8.07, -8.01, -8.13, -8.07, -8.07, -8.01 1998, 02, 35841, 1998.1260, -8.20, -8.10, -8.18, -8.08, -8.20, -8.10 1998, 03, 35869, 1998.2027, -8.20, -8.05, -8.23, -8.09, -8.20, -8.05 1998, 04, 35900, 1998.2877, -8.31, -8.12, -8.28, -8.10, -8.31, -8.12 1998, 05, 35930, 1998.3699, -8.28, -8.09, -8.29, -8.10, -8.28, -8.09 1998, 06, 35961, 1998.4548, -8.20, -8.13, -8.18, -8.11, -8.20, -8.13 1998, 07, 35991, 1998.5370, -8.01, -8.11, -8.02, -8.12, -8.01, -8.11 1998, 08, 36022, 1998.6219, -7.96, -8.17, -7.92, -8.12, -7.96, -8.17 1998, 09, 36053, 1998.7068, -7.82, -8.03, -7.92, -8.13, -7.82, -8.03 1998, 10, 36083, 1998.7890, -8.01, -8.17, -7.98, -8.14, -8.01, -8.17 1998, 11, 36114, 1998.8740, -8.10, -8.16, -8.08, -8.14, -8.10, -8.16 1998, 12, 36144, 1998.9562, -8.12, -8.11, -8.15, -8.14, -8.12, -8.11 1999, 01, 36175, 1999.0411, -8.27, -8.22, -8.20, -8.15, -8.27, -8.22 1999, 02, 36206, 1999.1260, -8.28, -8.18, -8.25, -8.15, -8.28, -8.18 1999, 03, 36234, 1999.2027, -8.31, -8.17, -8.29, -8.15, -8.31, -8.17 1999, 04, 36265, 1999.2877, -8.41, -8.22, -8.34, -8.15, -8.41, -8.22 1999, 05, 36295, 1999.3699, -8.31, -8.13, -8.33, -8.15, -8.31, -8.13 1999, 06, 36326, 1999.4548, -8.18, -8.11, -8.22, -8.14, -8.18, -8.11 1999, 07, 36356, 1999.5370, -8.00, -8.09, -8.05, -8.14, -8.00, -8.09 1999, 08, 36387, 1999.6219, -7.94, -8.15, -7.94, -8.14, -7.94, -8.15 1999, 09, 36418, 1999.7068, -7.93, -8.14, -7.93, -8.14, -7.93, -8.14 1999, 10, 36448, 1999.7890, -7.95, -8.11, -7.98, -8.14, -7.95, -8.11 1999, 11, 36479, 1999.8740, -8.04, -8.10, -8.07, -8.14, -8.04, -8.10 1999, 12, 36509, 1999.9562, -8.17, -8.16, -8.15, -8.14, -8.17, -8.16 2000, 01, 36540, 2000.0410, -8.23, -8.17, -8.19, -8.14, -8.23, -8.17 2000, 02, 36571, 2000.1257, -8.24, -8.14, -8.24, -8.14, -8.24, -8.14 2000, 03, 36600, 2000.2049, -8.29, -8.14, -8.28, -8.14, -8.29, -8.14 2000, 04, 36631, 2000.2896, -8.30, -8.12, -8.33, -8.14, -8.30, -8.12 2000, 05, 36661, 2000.3716, -8.32, -8.14, -8.32, -8.14, -8.32, -8.14 2000, 06, 36692, 2000.4563, -8.18, -8.11, -8.21, -8.14, -8.18, -8.11 2000, 07, 36722, 2000.5383, -8.02, -8.12, -8.05, -8.15, -8.02, -8.12 2000, 08, 36753, 2000.6230, -8.00, -8.20, -7.94, -8.15, -8.00, -8.20 2000, 09, 36784, 2000.7077, -7.93, -8.14, -7.94, -8.15, -7.93, -8.14 2000, 10, 36814, 2000.7896, -7.97, -8.13, -8.00, -8.15, -7.97, -8.13 2000, 11, 36845, 2000.8743, -8.12, -8.18, -8.09, -8.15, -8.12, -8.18 2000, 12, 36875, 2000.9563, -8.20, -8.19, -8.17, -8.15, -8.20, -8.19 2001, 01, 36906, 2001.0411, -8.23, -8.18, -8.21, -8.16, -8.23, -8.18 2001, 02, 36937, 2001.1260, -8.29, -8.19, -8.25, -8.16, -8.29, -8.19 2001, 03, 36965, 2001.2027, -8.31, -8.16, -8.30, -8.16, -8.31, -8.16 2001, 04, 36996, 2001.2877, -8.28, -8.09, -8.34, -8.15, -8.28, -8.09 2001, 05, 37026, 2001.3699, -8.33, -8.14, -8.34, -8.15, -8.33, -8.14 2001, 06, 37057, 2001.4548, -8.21, -8.14, -8.23, -8.15, -8.21, -8.14 2001, 07, 37087, 2001.5370, -8.09, -8.18, -8.06, -8.15, -8.09, -8.18 2001, 08, 37118, 2001.6219, -7.90, -8.11, -7.95, -8.15, -7.90, -8.11 2001, 09, 37149, 2001.7068, -7.91, -8.13, -7.94, -8.15, -7.91, -8.13 2001, 10, 37179, 2001.7890, -8.10, -8.26, -8.00, -8.15, -8.10, -8.26 2001, 11, 37210, 2001.8740, -8.11, -8.18, -8.09, -8.15, -8.11, -8.18 2001, 12, 37240, 2001.9562, -8.16, -8.15, -8.16, -8.15, -8.16, -8.15 2002, 01, 37271, 2002.0411, -8.19, -8.13, -8.21, -8.15, -8.19, -8.13 2002, 02, 37302, 2002.1260, -99.99, -99.99, -8.25, -8.15, -8.25, -8.15 2002, 03, 37330, 2002.2027, -8.31, -8.17, -8.29, -8.15, -8.31, -8.17 2002, 04, 37361, 2002.2877, -8.27, -8.09, -8.34, -8.15, -8.27, -8.09 2002, 05, 37391, 2002.3699, -8.36, -8.17, -8.34, -8.16, -8.36, -8.17 2002, 06, 37422, 2002.4548, -8.20, -8.13, -8.23, -8.16, -8.20, -8.13 2002, 07, 37452, 2002.5370, -8.01, -8.11, -8.07, -8.16, -8.01, -8.11 2002, 08, 37483, 2002.6219, -7.93, -8.13, -7.96, -8.17, -7.93, -8.13 2002, 09, 37514, 2002.7068, -7.99, -8.20, -7.96, -8.18, -7.99, -8.20 2002, 10, 37544, 2002.7890, -8.02, -8.17, -8.03, -8.18, -8.02, -8.17 2002, 11, 37575, 2002.8740, -8.13, -8.20, -8.13, -8.19, -8.13, -8.20 2002, 12, 37605, 2002.9562, -8.23, -8.22, -8.21, -8.20, -8.23, -8.22 2003, 01, 37636, 2003.0411, -8.21, -8.15, -8.27, -8.21, -8.21, -8.15 2003, 02, 37667, 2003.1260, -8.28, -8.18, -8.32, -8.22, -8.28, -8.18 2003, 03, 37695, 2003.2027, -99.99, -99.99, -8.37, -8.23, -8.37, -8.23 2003, 04, 37726, 2003.2877, -8.44, -8.25, -8.43, -8.24, -8.44, -8.25 2003, 05, 37756, 2003.3699, -8.50, -8.31, -8.43, -8.25, -8.50, -8.31 2003, 06, 37787, 2003.4548, -8.32, -8.25, -8.33, -8.25, -8.32, -8.25 2003, 07, 37817, 2003.5370, -8.27, -8.36, -8.16, -8.26, -8.27, -8.36 2003, 08, 37848, 2003.6219, -8.12, -8.32, -8.06, -8.26, -8.12, -8.32 2003, 09, 37879, 2003.7068, -8.06, -8.28, -8.05, -8.26, -8.06, -8.28 2003, 10, 37909, 2003.7890, -99.99, -99.99, -8.11, -8.26, -8.11, -8.26 2003, 11, 37940, 2003.8740, -8.20, -8.26, -8.20, -8.26, -8.20, -8.26 2003, 12, 37970, 2003.9562, -8.31, -8.30, -8.27, -8.26, -8.31, -8.30 2004, 01, 38001, 2004.0410, -8.34, -8.28, -8.31, -8.26, -8.34, -8.28 2004, 02, 38032, 2004.1257, -8.31, -8.22, -8.35, -8.26, -8.31, -8.22 2004, 03, 38061, 2004.2049, -8.36, -8.22, -8.40, -8.25, -8.36, -8.22 2004, 04, 38092, 2004.2896, -8.42, -8.23, -8.44, -8.25, -8.42, -8.23 2004, 05, 38122, 2004.3716, -8.42, -8.24, -8.43, -8.25, -8.42, -8.24 2004, 06, 38153, 2004.4563, -8.32, -8.25, -8.31, -8.25, -8.32, -8.25 2004, 07, 38183, 2004.5383, -8.11, -8.21, -8.15, -8.24, -8.11, -8.21 2004, 08, 38214, 2004.6230, -7.97, -8.18, -8.04, -8.24, -7.97, -8.18 2004, 09, 38245, 2004.7077, -99.99, -99.99, -8.03, -8.24, -8.03, -8.24 2004, 10, 38275, 2004.7896, -99.99, -99.99, -8.09, -8.25, -8.09, -8.25 2004, 11, 38306, 2004.8743, -99.99, -99.99, -8.19, -8.25, -8.19, -8.25 2004, 12, 38336, 2004.9563, -99.99, -99.99, -8.26, -8.25, -8.26, -8.25 2005, 01, 38367, 2005.0411, -8.24, -8.19, -8.31, -8.26, -8.24, -8.19 2005, 02, 38398, 2005.1260, -8.31, -8.21, -8.36, -8.26, -8.31, -8.21 2005, 03, 38426, 2005.2027, -8.42, -8.28, -8.41, -8.27, -8.42, -8.28 2005, 04, 38457, 2005.2877, -8.47, -8.29, -8.46, -8.27, -8.47, -8.29 2005, 05, 38487, 2005.3699, -8.48, -8.30, -8.46, -8.28, -8.48, -8.30 2005, 06, 38518, 2005.4548, -8.38, -8.31, -8.36, -8.29, -8.38, -8.31 2005, 07, 38548, 2005.5370, -8.14, -8.23, -8.20, -8.29, -8.14, -8.23 2005, 08, 38579, 2005.6219, -8.16, -8.37, -8.09, -8.30, -8.16, -8.37 2005, 09, 38610, 2005.7068, -8.19, -8.40, -8.09, -8.30, -8.19, -8.40 2005, 10, 38640, 2005.7890, -8.19, -8.35, -8.15, -8.31, -8.19, -8.35 2005, 11, 38671, 2005.8740, -8.21, -8.27, -8.25, -8.31, -8.21, -8.27 2005, 12, 38701, 2005.9562, -99.99, -99.99, -8.32, -8.31, -8.32, -8.31 2006, 01, 38732, 2006.0411, -99.99, -99.99, -8.37, -8.32, -8.37, -8.32 2006, 02, 38763, 2006.1260, -99.99, -99.99, -8.42, -8.32, -8.42, -8.32 2006, 03, 38791, 2006.2027, -8.43, -8.28, -8.46, -8.32, -8.43, -8.28 2006, 04, 38822, 2006.2877, -99.99, -99.99, -8.51, -8.32, -8.51, -8.32 2006, 05, 38852, 2006.3699, -8.52, -8.34, -8.51, -8.33, -8.52, -8.34 2006, 06, 38883, 2006.4548, -8.42, -8.35, -8.40, -8.33, -8.42, -8.35 2006, 07, 38913, 2006.5370, -8.31, -8.40, -8.23, -8.33, -8.31, -8.40 2006, 08, 38944, 2006.6219, -8.08, -8.28, -8.12, -8.33, -8.08, -8.28 2006, 09, 38975, 2006.7068, -99.99, -99.99, -8.11, -8.33, -8.11, -8.33 2006, 10, 39005, 2006.7890, -8.16, -8.32, -8.17, -8.33, -8.16, -8.32 2006, 11, 39036, 2006.8740, -99.99, -99.99, -8.26, -8.33, -8.26, -8.33 2006, 12, 39066, 2006.9562, -8.31, -8.30, -8.34, -8.33, -8.31, -8.30 2007, 01, 39097, 2007.0411, -8.33, -8.28, -8.38, -8.33, -8.33, -8.28 2007, 02, 39128, 2007.1260, -8.46, -8.36, -8.43, -8.33, -8.46, -8.36 2007, 03, 39156, 2007.2027, -8.47, -8.32, -8.47, -8.33, -8.47, -8.32 2007, 04, 39187, 2007.2877, -8.49, -8.30, -8.52, -8.33, -8.49, -8.30 2007, 05, 39217, 2007.3699, -8.55, -8.37, -8.52, -8.34, -8.55, -8.37 2007, 06, 39248, 2007.4548, -99.99, -99.99, -8.41, -8.34, -8.41, -8.34 2007, 07, 39278, 2007.5370, -99.99, -99.99, -8.25, -8.34, -8.25, -8.34 2007, 08, 39309, 2007.6219, -99.99, -99.99, -8.14, -8.34, -8.14, -8.34 2007, 09, 39340, 2007.7068, -99.99, -99.99, -8.13, -8.35, -8.13, -8.35 2007, 10, 39370, 2007.7890, -99.99, -99.99, -8.19, -8.35, -8.19, -8.35 2007, 11, 39401, 2007.8740, -99.99, -99.99, -8.29, -8.35, -8.29, -8.35 2007, 12, 39431, 2007.9562, -99.99, -99.99, -8.37, -8.36, -8.37, -8.36 2008, 01, 39462, 2008.0410, -99.99, -99.99, -8.41, -8.36, -8.41, -8.36 2008, 02, 39493, 2008.1257, -99.99, -99.99, -8.46, -8.36, -8.46, -8.36 2008, 03, 39522, 2008.2049, -99.99, -99.99, -8.51, -8.36, -8.51, -8.36 2008, 04, 39553, 2008.2896, -8.59, -8.40, -8.55, -8.36, -8.59, -8.40 2008, 05, 39583, 2008.3716, -99.99, -99.99, -8.55, -8.37, -8.55, -8.37 2008, 06, 39614, 2008.4563, -99.99, -99.99, -8.43, -8.37, -8.43, -8.37 2008, 07, 39644, 2008.5383, -8.31, -8.41, -8.27, -8.37, -8.31, -8.41 2008, 08, 39675, 2008.6230, -99.99, -99.99, -8.16, -8.37, -8.16, -8.37 2008, 09, 39706, 2008.7077, -99.99, -99.99, -8.15, -8.37, -8.15, -8.37 2008, 10, 39736, 2008.7896, -8.14, -8.29, -8.21, -8.37, -8.14, -8.29 2008, 11, 39767, 2008.8743, -8.31, -8.38, -8.30, -8.37, -8.31, -8.38 2008, 12, 39797, 2008.9563, -8.35, -8.34, -8.38, -8.37, -8.35, -8.34 2009, 01, 39828, 2009.0411, -99.99, -99.99, -8.42, -8.37, -8.42, -8.37 2009, 02, 39859, 2009.1260, -8.48, -8.38, -99.99, -99.99, -8.48, -8.38 2009, 03, 39887, 2009.2027, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 04, 39918, 2009.2877, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 05, 39948, 2009.3699, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 06, 39979, 2009.4548, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 07, 40009, 2009.5370, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 08, 40040, 2009.6219, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 09, 40071, 2009.7068, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 10, 40101, 2009.7890, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 11, 40132, 2009.8740, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99 2009, 12, 40162, 2009.9562, -99.99, -99.99, -99.99, -99.99, -99.99, -99.99