Trends '90: A Compendium of Data on Global Change Page: 89 of 465
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r. .n .. rrf.. ...},r:.. . ."h..<"rF: hY."rFr::"XFF:R^:;%}k.""fFF:kh: Fn.:F#....k"F1^:S:a..n".#:f.r.."""4F:,:F .n.".?MFrR:".nkti:%r:S::Yr kk k..,. :kr..".C<:k fr:."."t:.,r.":f::Rf....:'%Fr ".::... k; f;}:......;.:f""..r"...7":....:..........."."."r""rr..,".Atmospheric Concentrations of Carbon Dioxide*
Year Jan
1984
1985 345.4
1986 346.5
1987 346,7Feb Mar Apr May Jun Jul Aug Sept
Oct Nov Dec Ann
345.6 346.9 346.7 345.6 345.0 344.6 343.9 343.4 343.9 344.9 345.1
345.8 346.7 347.4 346.9 347.3 346.2 345.6 345.1 344.5 344.7 346.0 346.0
345.2 347.0 348.6 347.5 347.8 347.4 346.3 346.0 345.5 345.9 345.4 346.6
347.4 348.7 349.4 350.0 348.6 348.3 349.0 348.1 348.1 348.1 349.1 348.4*Atmospheric CO2 in parts per million by volume (ppmv). Annual averages based on monthly means. All numbers have been rounded to
the nearest tenth,
TRENDS '90
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Sepanski, R.J.; Stoss, F. W.; Boden, T. A.; Kanciruk, P. & Farrell, M. P. Trends '90: A Compendium of Data on Global Change, report, August 1, 1990; United States. (https://digital.library.unt.edu/ark:/67531/metadc1207824/m1/89/?q=84-9: accessed April 26, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.