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Tristan J. Horner

Affiliation: Woods Hole Oceanographic Institution (WHOI)

Address: []

Orcid: 0000-0003-1784-0391

Project: U.S. Arctic GEOTRACES Study (GN01) (1 datasets)

Dataset	Latest Version Date	Current State
Dissolved Ba, Cd, Cu, Ga, Mn, Ni, and V concentrations and Ba isotope concentrations from the US GEOTRACES Arctic Expedition (GN01, HLY1502) from August to October 2015 Role: Co-Principal Investigator	2021-07-01	Final no updates expected

Project: EAGER - Introducing Early Career Scientists to Research on the Great Lakes (3 datasets)

Dataset	Latest Version Date	Current State
Particulate multi-element geochemical concentrations, dissolved barium concentrations and barium-isotopic data collected during the R/V Blue Heron cruise BH15-11 in Lake Superior during August 2015 Role: Principal Investigator	2017-03-24	Final no updates expected
Processed CTD data from BH15-11 from R/V Blue Heron cruise BH15-11 in the western arm of Lake Superior in August 2015 Role: Principal Investigator	2017-07-20	Final no updates expected
Underway data for Blue Heron cruise BH15-11 in the western arm of Lake Superior from August 2015 (Early Career Great Lakes research project, Novel Nutrient Paleoproxy project) Role: Principal Investigator	2017-07-25	Final no updates expected

Project: Calibration of a Novel Nutrient Paleoproxy in the Southern Ocean (3 datasets)

Dataset	Latest Version Date	Current State
Particulate multi-element geochemical concentrations, dissolved barium concentrations and barium-isotopic data collected during the R/V Blue Heron cruise BH15-11 in Lake Superior during August 2015 Role: Principal Investigator	2017-03-24	Final no updates expected
Processed CTD data from BH15-11 from R/V Blue Heron cruise BH15-11 in the western arm of Lake Superior in August 2015 Role: Principal Investigator	2017-07-20	Final no updates expected
Underway data for Blue Heron cruise BH15-11 in the western arm of Lake Superior from August 2015 (Early Career Great Lakes research project, Novel Nutrient Paleoproxy project) Role: Principal Investigator	2017-07-25	Final no updates expected

Project: US GEOTRACES Pacific Meridional Transect (GP15) (2 datasets)

Dataset	Latest Version Date	Current State
Barium isotope ratios (δ138Ba) in small size fraction particles from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 Role: Principal Investigator	2021-06-22	Final no updates expected
Barium isotope ratios (δ138Ba) in small size fraction particles from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 2018 Role: Principal Investigator	2021-06-22	Final no updates expected

Project: U.S. GEOTRACES Pacific Meridional Transect: Tracing Basin-scale Nutrient Cycling and Carbon Export with Dissolved and Particulate Barium-isotopic Distributions (4 datasets)

Dataset	Latest Version Date	Current State
Barium concentration and isotopic data from SAFe, collected during the 2nd GEOTRACES Intercalibration cruise (R/V Knorr KN195-08) in the eastern North Pacific during May 2009 Role: Principal Investigator	2019-08-06	Final no updates expected
Barium concentration and isotopic data collected along the California Coastline during July 2014 from R/V Melville cruise MV1405 Role: Principal Investigator	2019-06-10	Final no updates expected
Barium isotope ratios (δ138Ba) in small size fraction particles from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 Role: Principal Investigator	2021-06-22	Final no updates expected
Barium isotope ratios (δ138Ba) in small size fraction particles from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 2018 Role: Principal Investigator	2021-06-22	Final no updates expected

Project: GEOTRACES Arctic Section: Methane, vanadium, barium, and gallium as process indicators in the Arctic Ocean (1 datasets)

Dataset	Latest Version Date	Current State
Dissolved Ba, Cd, Cu, Ga, Mn, Ni, and V concentrations and Ba isotope concentrations from the US GEOTRACES Arctic Expedition (GN01, HLY1502) from August to October 2015 Role: Co-Principal Investigator	2021-07-01	Final no updates expected

Project: The Speed, Signature, and Significance of Barium Transformations in Seawater (1 datasets)

Dataset	Latest Version Date	Current State
A spatially and vertically resolved global grid of dissolved barium concentrations in seawater determined using Gaussian Process Regression machine learning Role: Principal Investigator	2023-07-11	Final no updates expected