...click Calibrate...

A concatenation of Levin's Vermunt and Schauinsland data sets. Representative of the European atmosphere (except for highly industrial areas). Published by Levin and Kromer in The Tropospheric ¹⁴CO₂ Level in Mid-Latitudes of the Northern Hemisphere (1959-2003), Radiocarbon 46(3), pp 1261-1272. Data points are approximately bi-weekly.

Hammer, Samuel; Levin, Ingeborg, 2017, "Monthly mean atmospheric D14CO2 at Jungfraujoch and Schauinsland from 1986 to 2016",
http://dx.doi.org/10.11588/data/10100
heiDATA: Heidelberg Research Data Repository [Distributor] V2 [Version]

Uncertainties for the monthly averages were taken from the annual averages of individual measurement uncertainties.

I have also added 9 NHZ1 points between 1950 and 1959 to smooth the transition with IntCal

The dataset

A compilation of northern and southern hemisphere datasets by Hua et al

NH_zone1 is bounded in the south by approximately latitude ~40°N.

The dataset

A compilation of northern and southern hemisphere datasets by Hua et al

NH_zone2 is bounded in the north by approximately latitude ~40°N and in the south by the mean summer intertropical convergence zone.

The dataset

A compilation of northern and southern hemisphere datasets by Hua et al

NH_zone3 is bounded in the north by the mean summer intertropical convergence zone and in the south by the equator.

The dataset

A compilation of northern and southern hemisphere datasets by Hua et al

Southern Hemisphere Zones 1 and 2 are bounded in the north by the mean intertropical convergence zone. Data points are approximately monthly.

The dataset

A compilation of northern and southern hemisphere datasets by Hua et al

Southern Hemisphere Zone 3 is bounded in the north by the equator and in the south by the mean tropical interconvergence zone. Data points are approximately monthly.

The dataset

# Andrews, Allen H, Daria Siciliano, Donald C Potts, Edward E DeMartini, Stephannie Covarrubias
# Bomb radiocarbon and the Hawaiian Archipelago: Coral, otoliths and seawater.
# Radiocarbon Volume 58, Issue 3 September 2016 , pp. 531-548

http://dx.doi.org/10.1017/RDC.2016.32
Data points are approximately every 3 months.

The dataset

# Wu et al, 2021
# Yang Wu,Stewart J Fallon,Neal E Cantin,Janice M Lough
# SURFACE OCEAN RADIOCARBON FROM A PORITES CORAL RECORD IN THE GREAT BARRIER REEF: 1945–2017
# Radiocarbon
# 2021
# dx.doi.org/10.1017/RDC.2020.141



http://dx.doi.org/10.1017/RDC.2020.141



Data points are approximately every 3 or 4 months.

The dataset

Atmospheric data from Reimer et al (2019); http:/\/dx.doi.org/10.2458/azu_js_rc.55.16947

The dataset

Atmospheric data from Hogg et al (2013);
http:/\/dx.doi.org/10.2458/azu_js_rc.55.16783
The dataset 

The calibration dataset should be smoothed to the lifespan of the sample, if it is known. Fractional years are permitted.

F¹⁴C=e^-(CRA/8033)

σ_F¹⁴C=e^-(CRA/8033) -e^{-((CRA+σ_CRA)/8033)}

where CRA is defined as Conventional Radiocarbon Age BP

OR

F¹⁴C=D¹⁴C/1000 + 1

σ_F¹⁴C=σ_D¹⁴C / 1000

See Reimer, Brown and Reimer, 2004 and Table 1 of Stuiver and Polach, 1977 for definitions

F¹⁴C=e^-(CRA/8033)

σ_F¹⁴C=e^-(CRA/8033) -e^{-((CRA+σ_CRA)/8033)}

where CRA is defined as Conventional Radiocarbon Age BP

OR

F¹⁴C=D¹⁴C/1000 + 1

σ_F¹⁴C=σ_D¹⁴C / 1000

See Reimer, Brown and Reimer, 2004 and Table 1 of Stuiver and Polach, 1977 for definitions

A concatenation of an extraction of the summertime (growing season) data of Levin's Vermunt and Schauinsland data sets. The Vermunt data is unevenly spaced so the summertime months are approximate. The uncertainties are the average uncertainty over the 4 month period. The summertime determination for Schauinsland was made by the dataset authors in the 2017 update.