A link to the data entry menu lives in the upper right corner. Tic the box to transfer data to the text area. icurve and jcurve are respectively indices in the numbering scheme of post-bomb and pre-bomb datasets. If you wish to specify curve smoothing you must specify a pre-bomb curve number. Zero serves as a placeholder for that field but does not invoke a pre-bomb curve. Once you have figured out the calibration curve numbering scheme you can paste data directly into the text area box from a spreadsheet. You should be aware that there is a computational penalty for specifying a pre-bomb curve

Don't specify a pre-bomb dataset for post-bomb sets that start before 1950 (ie Brazil and Kure Atoll).

IntCal20 (1)


http://dx.doi.org/10.1017/RDC.2020.41

SHCal20 (2)


http://dx.doi.org/10.1017/RDC.2020.59

Levin (3)

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.
calrange: [1950:2019.6]
f14crange:[.974:1.992]

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

Levin Summer(4)

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]

The above dataset averaged between mid-May and mid-August

The dataset calrange: [1950:2016.6] f14crange:[.974:1.949]

NHZ1 (5)

A compilation of northern and southern hemisphere datasets by Hua et al published in
"ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010",
Radiocarbon, 55: Nr 4, 2013.

NH_zone1 is bounded in the south by latitude ~40°N. Data points are approximately monthly. calrange: [1950:2009.6] f14crange:[.974:1.984]

NHZ2 (6)

A compilation of northern and southern hemisphere datasets by Hua et al published in
"ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010",
Radiocarbon, 55: Nr 2, 2013.

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

The dataset calrange: [1950:2009.6] f14crange:[.977:1.939]

NHZ3 (7)

A compilation of northern and southern hemisphere datasets by Hua et al published in
"ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010",
Radiocarbon, 55: Nr 2, 2013.

NH_zone3 is bounded in the north by the mean summer intertropical convergence zone and in the south by the equator. Data points are approximately monthly.

The dataset calrange: [1950:2009.6] f14crange:[.973:1.736]

SHZ1_2 (8)

A compilation of northern and southern hemisphere datasets by Hua et al published in
"ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010",
Radiocarbon, 55: Nr 2, 2013.

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

The dataset calrange: [1950:2011.2] f14crange:[.971:1.675]

SHZ3 (9)

A compilation of northern and southern hemisphere datasets by Hua et al published in
"ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010",
Radiocarbon, 55: Nr 2, 2013.

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 calrange: [1950:2011.2] f14crange:[.9730:1.670]

Brazil (10)

Annual growth rings in a sample of Parana pine (Araucaria angustifolia):
 Toward improving the 14C calibration curve for the Southern Hemisphere

Guaciara M Santos, Roberto Linares, Claudio S Lisi, Mario Tomazello Filho Quaternary Geochronology 25 (2015) 96-103

http://dx.doi.org/10.1016/j.quageo.2014.10.004

The dataset calrange: [1927.95:1997.9] f14crange:[.970:1.627]

KureAtoll (11)

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 calrange: [1939.5:2002.5] f14crange:[.934:1.182]