"-------------------------------------------------------------------------------------------" " Monthly atmospheric CO2 concentrations (ppm) 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 21-Mar-2009 from archive dated 27-Oct-2011 12:04:16 " " " "-------------------------------------------------------------------------------------------" " " " 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 CO2 concentrations in micro-mol CO2 per mole (ppm) " " reported on the 2008A SIO manometric mole fraction scale. 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 " " " " CO2 concentrations are measured on the '08A' calibration scale " " " Yr, Mn, Date, Date, CO2,seasonally, fit, seasonally, CO2, seasonally , , , , , adjusted, ,adjusted fit, filled,adjusted filled , , Excel, , [ppm], [ppm] , [ppm], [ppm], [ppm], [ppm] 1997, 01, 35445, 1997.0411, 365.64, 365.15, -99.99, -99.99, 365.64, 365.15 1997, 02, 35476, 1997.1260, 365.93, 364.50, 366.36, 364.92, 365.93, 364.50 1997, 03, 35504, 1997.2027, 366.88, 364.70, 367.21, 365.03, 366.88, 364.70 1997, 04, 35535, 1997.2877, 368.65, 365.65, 368.14, 365.14, 368.65, 365.65 1997, 05, 35565, 1997.3699, 370.27, 366.78, 368.73, 365.24, 370.27, 366.78 1997, 06, 35596, 1997.4548, 367.22, 365.44, 367.13, 365.35, 367.22, 365.44 1997, 07, 35626, 1997.5370, -99.99, -99.99, 364.20, 365.46, 364.20, 365.46 1997, 08, 35657, 1997.6219, 362.50, 365.59, 362.48, 365.57, 362.50, 365.59 1997, 09, 35688, 1997.7068, 363.06, 366.54, 362.20, 365.68, 363.06, 366.54 1997, 10, 35718, 1997.7890, 362.95, 365.84, 362.91, 365.80, 362.95, 365.84 1997, 11, 35749, 1997.8740, 364.02, 365.34, 364.62, 365.94, 364.02, 365.34 1997, 12, 35779, 1997.9562, 366.34, 366.50, 365.93, 366.09, 366.34, 366.50 1998, 01, 35810, 1998.0411, 366.08, 365.59, 366.76, 366.27, 366.08, 365.59 1998, 02, 35841, 1998.1260, 367.76, 366.33, 367.91, 366.47, 367.76, 366.33 1998, 03, 35869, 1998.2027, 368.14, 365.96, 368.86, 366.68, 368.14, 365.96 1998, 04, 35900, 1998.2877, 369.66, 366.66, 369.93, 366.93, 369.66, 366.66 1998, 05, 35930, 1998.3699, 370.49, 367.00, 370.68, 367.19, 370.49, 367.00 1998, 06, 35961, 1998.4548, 369.17, 367.39, 369.25, 367.47, 369.17, 367.39 1998, 07, 35991, 1998.5370, 367.42, 368.68, 366.49, 367.75, 367.42, 368.68 1998, 08, 36022, 1998.6219, 364.95, 368.05, 364.94, 368.03, 364.95, 368.05 1998, 09, 36053, 1998.7068, -99.99, -99.99, 364.81, 368.29, 364.81, 368.29 1998, 10, 36083, 1998.7890, 365.67, 368.57, 365.65, 368.54, 365.67, 368.57 1998, 11, 36114, 1998.8740, 367.88, 369.20, 367.45, 368.77, 367.88, 369.20 1998, 12, 36144, 1998.9562, 368.92, 369.08, 368.81, 368.97, 368.92, 369.08 1999, 01, 36175, 1999.0411, 370.13, 369.64, 369.65, 369.16, 370.13, 369.64 1999, 02, 36206, 1999.1260, 371.59, 370.16, 370.74, 369.31, 371.59, 370.16 1999, 03, 36234, 1999.2027, 372.10, 369.92, 371.61, 369.43, 372.10, 369.92 1999, 04, 36265, 1999.2877, 373.93, 370.93, 372.53, 369.53, 373.93, 370.93 1999, 05, 36295, 1999.3699, 372.92, 369.44, 373.10, 369.61, 372.92, 369.44 1999, 06, 36326, 1999.4548, 370.44, 368.66, 371.47, 369.69, 370.44, 368.66 1999, 07, 36356, 1999.5370, 367.28, 368.54, 368.51, 369.76, 367.28, 368.54 1999, 08, 36387, 1999.6219, 369.06, 372.15, 366.76, 369.85, 369.06, 372.15 1999, 09, 36418, 1999.7068, 365.73, 369.21, 366.46, 369.95, 365.73, 369.21 1999, 10, 36448, 1999.7890, 366.47, 369.36, 367.16, 370.05, 366.47, 369.36 1999, 11, 36479, 1999.8740, 368.26, 369.58, 368.85, 370.17, 368.26, 369.58 1999, 12, 36509, 1999.9562, 370.66, 370.82, 370.13, 370.30, 370.66, 370.82 2000, 01, 36540, 2000.0410, 370.47, 369.97, 370.93, 370.44, 370.47, 369.97 2000, 02, 36571, 2000.1257, 372.23, 370.80, 372.02, 370.59, 372.23, 370.80 2000, 03, 36600, 2000.2049, 373.79, 371.59, 372.94, 370.74, 373.79, 371.59 2000, 04, 36631, 2000.2896, 374.09, 371.07, 373.92, 370.90, 374.09, 371.07 2000, 05, 36661, 2000.3716, 374.37, 370.89, 374.54, 371.06, 374.37, 370.89 2000, 06, 36692, 2000.4563, 372.61, 370.88, 372.96, 371.23, 372.61, 370.88 2000, 07, 36722, 2000.5383, 369.16, 370.46, 370.10, 371.40, 369.16, 370.46 2000, 08, 36753, 2000.6230, 369.47, 372.57, 368.47, 371.57, 369.47, 372.57 2000, 09, 36784, 2000.7077, 368.26, 371.75, 368.26, 371.74, 368.26, 371.75 2000, 10, 36814, 2000.7896, 368.26, 371.15, 369.02, 371.90, 368.26, 371.15 2000, 11, 36845, 2000.8743, 371.14, 372.45, 370.75, 372.06, 371.14, 372.45 2000, 12, 36875, 2000.9563, 372.34, 372.50, 372.04, 372.20, 372.34, 372.50 2001, 01, 36906, 2001.0411, 373.55, 373.05, 372.84, 372.34, 373.55, 373.05 2001, 02, 36937, 2001.1260, 374.78, 373.35, 373.90, 372.46, 374.78, 373.35 2001, 03, 36965, 2001.2027, 375.13, 372.95, 374.74, 372.56, 375.13, 372.95 2001, 04, 36996, 2001.2877, 374.72, 371.72, 375.66, 372.66, 374.72, 371.72 2001, 05, 37026, 2001.3699, 376.65, 373.16, 376.24, 372.75, 376.65, 373.16 2001, 06, 37057, 2001.4548, 374.91, 373.13, 374.62, 372.84, 374.91, 373.13 2001, 07, 37087, 2001.5370, 373.04, 374.30, 371.67, 372.92, 373.04, 374.30 2001, 08, 37118, 2001.6219, 368.12, 371.21, 369.92, 373.01, 368.12, 371.21 2001, 09, 37149, 2001.7068, 368.71, 372.19, 369.61, 373.10, 368.71, 372.19 2001, 10, 37179, 2001.7890, 372.58, 375.47, 370.30, 373.19, 372.58, 375.47 2001, 11, 37210, 2001.8740, 371.61, 372.93, 371.97, 373.29, 371.61, 372.93 2001, 12, 37240, 2001.9562, 372.88, 373.05, 373.24, 373.40, 372.88, 373.05 2002, 01, 37271, 2002.0411, 374.02, 373.53, 374.01, 373.52, 374.02, 373.53 2002, 02, 37302, 2002.1260, -99.99, -99.99, 375.08, 373.65, 375.08, 373.65 2002, 03, 37330, 2002.2027, 376.30, 374.12, 375.96, 373.78, 376.30, 374.12 2002, 04, 37361, 2002.2877, 375.79, 372.79, 376.94, 373.93, 375.79, 372.79 2002, 05, 37391, 2002.3699, 377.48, 373.99, 377.59, 374.11, 377.48, 373.99 2002, 06, 37422, 2002.4548, 376.08, 374.30, 376.09, 374.31, 376.08, 374.30 2002, 07, 37452, 2002.5370, 372.53, 373.78, 373.27, 374.52, 372.53, 373.78 2002, 08, 37483, 2002.6219, 370.27, 373.36, 371.68, 374.77, 370.27, 373.36 2002, 09, 37514, 2002.7068, 371.90, 375.38, 371.55, 375.03, 371.90, 375.38 2002, 10, 37544, 2002.7890, 372.25, 375.14, 372.41, 375.30, 372.25, 375.14 2002, 11, 37575, 2002.8740, 374.20, 375.53, 374.27, 375.59, 374.20, 375.53 2002, 12, 37605, 2002.9562, 376.42, 376.58, 375.72, 375.88, 376.42, 376.58 2003, 01, 37636, 2003.0411, 376.12, 375.63, 376.68, 376.19, 376.12, 375.63 2003, 02, 37667, 2003.1260, 377.51, 376.07, 377.92, 376.49, 377.51, 376.07 2003, 03, 37695, 2003.2027, -99.99, -99.99, 378.94, 376.76, 378.94, 376.76 2003, 04, 37726, 2003.2877, 380.32, 377.32, 380.05, 377.05, 380.32, 377.32 2003, 05, 37756, 2003.3699, 381.73, 378.24, 380.80, 377.32, 381.73, 378.24 2003, 06, 37787, 2003.4548, 378.86, 377.08, 379.35, 377.57, 378.86, 377.08 2003, 07, 37817, 2003.5370, -99.99, -99.99, 376.55, 377.80, 376.55, 377.80 2003, 08, 37848, 2003.6219, 376.20, 379.29, 374.92, 378.01, 376.20, 379.29 2003, 09, 37879, 2003.7068, -99.99, -99.99, 374.72, 378.21, 374.72, 378.21 2003, 10, 37909, 2003.7890, -99.99, -99.99, 375.48, 378.37, 375.48, 378.37 2003, 11, 37940, 2003.8740, 378.18, 379.50, 377.20, 378.52, 378.18, 379.50 2003, 12, 37970, 2003.9562, 378.26, 378.42, 378.48, 378.65, 378.26, 378.42 2004, 01, 38001, 2004.0410, 379.82, 379.32, 379.26, 378.76, 379.82, 379.32 2004, 02, 38032, 2004.1257, 379.57, 378.14, 380.30, 378.87, 379.57, 378.14 2004, 03, 38061, 2004.2049, 380.42, 378.22, 381.16, 378.96, 380.42, 378.22 2004, 04, 38092, 2004.2896, 382.17, 379.14, 382.09, 379.07, 382.17, 379.14 2004, 05, 38122, 2004.3716, 382.16, 378.68, 382.65, 379.17, 382.16, 378.68 2004, 06, 38153, 2004.4563, 381.96, 380.24, 381.01, 379.28, 381.96, 380.24 2004, 07, 38183, 2004.5383, 377.27, 378.56, 378.10, 379.39, 377.27, 378.56 2004, 08, 38214, 2004.6230, 377.54, 380.64, 376.41, 379.52, 377.54, 380.64 2004, 09, 38245, 2004.7077, -99.99, -99.99, 376.17, 379.65, 376.17, 379.65 2004, 10, 38275, 2004.7896, -99.99, -99.99, 376.90, 379.78, 376.90, 379.78 2004, 11, 38306, 2004.8743, -99.99, -99.99, 378.62, 379.93, 378.62, 379.93 2004, 12, 38336, 2004.9563, -99.99, -99.99, 379.92, 380.09, 379.92, 380.09 2005, 01, 38367, 2005.0411, 379.69, 379.20, 380.75, 380.26, 379.69, 379.20 2005, 02, 38398, 2005.1260, 381.04, 379.61, 381.88, 380.44, 381.04, 379.61 2005, 03, 38426, 2005.2027, 382.89, 380.71, 382.80, 380.62, 382.89, 380.71 2005, 04, 38457, 2005.2877, 383.90, 380.89, 383.83, 380.83, 383.90, 380.89 2005, 05, 38487, 2005.3699, 384.67, 381.19, 384.53, 381.04, 384.67, 381.19 2005, 06, 38518, 2005.4548, 383.78, 382.00, 383.04, 381.26, 383.78, 382.00 2005, 07, 38548, 2005.5370, 379.60, 380.86, 380.21, 381.47, 379.60, 380.86 2005, 08, 38579, 2005.6219, 379.45, 382.54, 378.59, 381.68, 379.45, 382.54 2005, 09, 38610, 2005.7068, -99.99, -99.99, 378.40, 381.89, 378.40, 381.89 2005, 10, 38640, 2005.7890, 380.02, 382.92, 379.20, 382.09, 380.02, 382.92 2005, 11, 38671, 2005.8740, 380.42, 381.74, 380.97, 382.29, 380.42, 381.74 2005, 12, 38701, 2005.9562, -99.99, -99.99, 382.33, 382.49, 382.33, 382.49 2006, 01, 38732, 2006.0411, -99.99, -99.99, 383.18, 382.69, 383.18, 382.69 2006, 02, 38763, 2006.1260, -99.99, -99.99, 384.32, 382.89, 384.32, 382.89 2006, 03, 38791, 2006.2027, 385.23, 383.05, 385.25, 383.07, 385.23, 383.05 2006, 04, 38822, 2006.2877, -99.99, -99.99, 386.26, 383.26, 386.26, 383.26 2006, 05, 38852, 2006.3699, -99.99, -99.99, 386.93, 383.45, 386.93, 383.45 2006, 06, 38883, 2006.4548, 386.12, 384.34, 385.42, 383.64, 386.12, 384.34 2006, 07, 38913, 2006.5370, 384.79, 386.05, 382.56, 383.82, 384.79, 386.05 2006, 08, 38944, 2006.6219, 380.00, 383.09, 380.91, 384.00, 380.00, 383.09 2006, 09, 38975, 2006.7068, 379.27, 382.76, 380.71, 384.19, 379.27, 382.76 2006, 10, 39005, 2006.7890, 380.81, 383.71, 381.49, 384.39, 380.81, 383.71 2006, 11, 39036, 2006.8740, -99.99, -99.99, 383.27, 384.59, 383.27, 384.59 2006, 12, 39066, 2006.9562, 384.33, 384.49, 384.64, 384.80, 384.33, 384.49 2007, 01, 39097, 2007.0411, 387.34, 386.84, 385.51, 385.01, 387.34, 386.84 2007, 02, 39128, 2007.1260, -99.99, -99.99, 386.66, 385.23, 386.66, 385.23 2007, 03, 39156, 2007.2027, 387.28, 385.10, 387.60, 385.42, 387.28, 385.10 2007, 04, 39187, 2007.2877, 388.18, 385.18, 388.63, 385.63, 388.18, 385.18 2007, 05, 39217, 2007.3699, 389.62, 386.14, 389.32, 385.83, 389.62, 386.14 2007, 06, 39248, 2007.4548, -99.99, -99.99, 387.82, 386.04, 387.82, 386.04 2007, 07, 39278, 2007.5370, -99.99, -99.99, 384.99, 386.24, 384.99, 386.24 2007, 08, 39309, 2007.6219, -99.99, -99.99, 383.36, 386.45, 383.36, 386.45 2007, 09, 39340, 2007.7068, -99.99, -99.99, 383.16, 386.65, 383.16, 386.65 2007, 10, 39370, 2007.7890, -99.99, -99.99, 383.94, 386.84, 383.94, 386.84 2007, 11, 39401, 2007.8740, -99.99, -99.99, 385.70, 387.02, 385.70, 387.02 2007, 12, 39431, 2007.9562, -99.99, -99.99, 387.04, 387.20, 387.04, 387.20 2008, 01, 39462, 2008.0410, -99.99, -99.99, 387.86, 387.37, 387.86, 387.37 2008, 02, 39493, 2008.1257, -99.99, -99.99, 388.96, 387.53, 388.96, 387.53 2008, 03, 39522, 2008.2049, -99.99, -99.99, 389.87, 387.68, 389.87, 387.68 2008, 04, 39553, 2008.2896, 391.16, 388.14, 390.84, 387.82, 391.16, 388.14 2008, 05, 39583, 2008.3716, -99.99, -99.99, 391.42, 387.94, 391.42, 387.94 2008, 06, 39614, 2008.4563, 389.93, 388.21, 389.79, 388.06, 389.93, 388.21 2008, 07, 39644, 2008.5383, -99.99, -99.99, 386.87, 388.16, 386.87, 388.16 2008, 08, 39675, 2008.6230, -99.99, -99.99, 385.16, 388.26, 385.16, 388.26 2008, 09, 39706, 2008.7077, -99.99, -99.99, 384.87, 388.35, 384.87, 388.35 2008, 10, 39736, 2008.7896, -99.99, -99.99, 385.54, 388.43, 385.54, 388.43 2008, 11, 39767, 2008.8743, 387.88, 389.19, 387.18, 388.50, 387.88, 389.19 2008, 12, 39797, 2008.9563, 387.90, 388.07, 388.40, 388.56, 387.90, 388.07 2009, 01, 39828, 2009.0411, 387.33, 386.83, 389.12, 388.62, 387.33, 386.83 2009, 02, 39859, 2009.1260, 390.43, 389.00, 390.12, 388.69, 390.43, 389.00 2009, 03, 39887, 2009.2027, 390.72, 388.54, 390.93, 388.75, 390.72, 388.54 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