MAKE A MEME View Large Image Radiocarbon bomb spike.svg validSVG Atmospheric <sup>14</sup>CO<sub>2</sub> in the second half of the 20<sup>th</sup> century The figure shows the <sup>14</sup>C / <sup>12</sup>C ratio relative to the natural level in the atmospheric ...
View Original:Radiocarbon bomb spike.svg (600x480)
Download: Original    Medium    Small Thumb
Courtesy of:commons.wikimedia.org More Like This
Keywords: Radiocarbon bomb spike.svg validSVG Atmospheric <sup>14</sup>CO<sub>2</sub> in the second half of the 20<sup>th</sup> century The figure shows the <sup>14</sup>C / <sup>12</sup>C ratio relative to the natural level in the atmospheric CO<sub>2</sub> 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 Atmosphärisches <sup>14</sup>CO<sub>2</sub> in der zweiten Hälfte des 20 Jahrhunderts Own work Data from the following sources http //cdiac esd ornl gov/trends/co2/welling html 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 http //cdiac esd ornl gov/trends/co2/cent-verm html 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 AD 2008-08-09 Hokanomono All rights for generating the graphics shall be released As far as I know there is no copyright protection on measurement data in general Image Atmospheric radiocarbon 1954-1993 svg Gnuplot script <pre> reset set term svg enhanced set output plot svg set xdata time set timefmt Y- m- d set xrange 1945-1-1 2000-1-1 set format x Y set xtics 5 31556926 set grid set title 'Atmospheric 14 CO_ 2 ' set xlabel 'Year AD ' set ylabel 'pMC/ percent' see Stuiver Polach for conversion between D14C and pMC lambda 1 0 / 8267 365 2422 24 3600 set arrow from 1963-10-10 210 to 1963-10-10 200 set label PTBT 10-Oct-1963 at 1963-10-10 210 offset -5 0 5 plot 90 230 <awk ' / / print \ 19\ 1 \ -\ 2 \ -\ 3 mktime sprintf \ 19 02i 02i 02i 00 00 00\ 1 2 3 - mktime \ 1950 01 01 00 00 00\ 6 7; ' welling 195 us 1 3+1000 exp -lambda 2 0 1 tit 'SH Wellington New Zealand' w lines <awk 'BEGIN FIELDWIDTHS \ 1 7 5 7 5 2 3 3 4 2 3 3 5 6 5 4 3 2 1\ ; / HD-/ a mktime sprintf \ 19 02i 02i 02i 00 00 00\ 8 7 6 ; b mktime sprintf \ 19 02i 02i 02i 00 00 00\ 12 11 10 ; present mktime \ 1950 01 01 00 00 00\ ; printf \ s g 4g 2g\\n\ strftime \ Y- m- d\ a+b /2 b-a /2 b-present 16 18; ' vermunt c14 us 1 4+1000 exp -lambda 3 0 1 tit 'NH Vermunt Austria' w lines 100 tit 'natural level' set output </pre> Gnuplot diagrams Earth's atmosphere 1963 Nuclear fallout Carbon-14
Terms of Use   Search of the Day