Radiocarbon bomb spike

Forfatter/Opretter:

Hokanomono

Kredit:

Eget arbejde (Original text: Own work. Data from the following sources:)

• Manning, M.R., and W.H. Melhuish. 1994. Atmospheric 14C record from Wellington. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.
• Levin, I., B. Kromer, H. Schoch-Fischer, M. Bruns, M. Münnich, D. Berdau, J.C. Vogel, and K.O. Münnich, 1994. δ14CO2 record from Vermunt. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.

Shortlink:

https://dkwiki.dk/b/e431

kilde:

Wikimedia Commons

størrelse:

600 x 480 Pixel (28037 Bytes)

beskrivelse:

Atmospheric ¹⁴CO₂ in the second half of the 20^th century.

The figure shows the ¹⁴C / ¹²C ratio relative to the natural level in the atmospheric CO₂ as a function of time in the second half of the 20th century.

The plot was generated with gnuplot from data of atmospheric radiocarbon in Wellington, New Zealand 1954AD to 1993AD and at the Vermuntsee, Austria 1959AD to 1983AD. The SVG file from gnuplot has been improved manually.

The data sources provide the data as D14C. For the plot the absolute percent modern value has been calculated assuming that each measurement was done in the same year as the respective sample was taken.

Licens:

Public domain

Kommentar på licensen:

All rights for generating the graphics shall be released. As far as I know there is no copyright protection on measurement data in general.

Public domainPublic domainfalsefalse

Jeg, indehaveren af ophavsretten til dette værk, udgiver dette værk som offentlig ejendom. Dette gælder i hele verden. I nogle lande er dette ikke juridisk muligt. I så fald: Jeg giver enhver ret til at anvende dette værk til ethvert formål, uden nogen restriktioner, medmindre sådanne restriktioner er påkrævede ved lov.