Chad Hammerschmidt

Affiliation:

Address:

3640 Colonel Glenn Highway
272B Brehm Lab
Dayton, OH
USA 45435

ORCiD:

Program coordination

None

Project coordination

GEOTRACES Pacific Section: Mercury Speciation Along a Zonal Section in the Eastern Tropical South Pacific (EPZT Mercury)	Principal Investigator, Contact
Collaborative Research: GEOTRACES Arctic Section: Mercury Speciation and Cycling in the Arctic Ocean (GEOTRACES Arctic Mercury)	Principal Investigator
Collaborative Research: US GEOTRACES GP17-OCE and -ANT Sections: External sources, cycling and processes affecting mercury speciation in the South Pacific and Southern Oceans (GP17-OCE and GP17-ANT Water Column Mercury Species)	Co-Principal Investigator

Deployment coordination

None

Datasets

Project: Collaborative Research: GEOTRACES Arctic Section: Mercury Speciation and Cycling in the Arctic Ocean

Dataset	Version Date	Current State
Concentrations of dissolved and particulate mercury species collected on the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015 Co-Principal Investigator	2021-02-03	Final no updates expected
[DEPRECATED] Particulate total mercury and particulate monomethylmercury concentrations from the Western Arctic Ocean, which were sampled by McLane pumps during he 2015 US GEOTRACES Cruise (GN01; HLY1502) Co-Principal Investigator	2018-07-10	Deprecated
[DEPRECATED] Dissolved mercury measurements from the Western Arctic Ocean, which were sampled as part of the 2015 US GEOTRACES Cruise (GN01; HLY1502) Co-Principal Investigator	2018-06-22	Deprecated

Project: US GEOTRACES Pacific Meridional Transect (GP15)

Dataset	Version Date	Current State
Dissolved and particulate mercury from samples collected on 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 Co-Principal Investigator	2025-02-04	Data not available
Dissolved and particulate mercury from samples collected on 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 Co-Principal Investigator	2025-02-04	Data not available

Project: GEOTRACES Pacific Section: Mercury Speciation Along a Zonal Section in the Eastern Tropical South Pacific

Dataset	Version Date	Current State
Suspended particulate total mercury and monomethylmercury across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013 Co-Principal Investigator, Contact	2016-06-14	Final no updates expected
Mercury speciation across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013 Co-Principal Investigator, Contact	2016-11-18	Final no updates expected

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

Dataset	Version Date	Current State
Concentrations of dissolved and particulate mercury species collected on the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015 Co-Principal Investigator	2021-02-03	Final no updates expected
[DEPRECATED] Particulate total mercury and particulate monomethylmercury concentrations from the Western Arctic Ocean, which were sampled by McLane pumps during he 2015 US GEOTRACES Cruise (GN01; HLY1502) Co-Principal Investigator	2018-07-10	Deprecated
[DEPRECATED] Dissolved mercury measurements from the Western Arctic Ocean, which were sampled as part of the 2015 US GEOTRACES Cruise (GN01; HLY1502) Co-Principal Investigator	2018-06-22	Deprecated

Project: U.S. GEOTRACES East Pacific Zonal Transect (GP16)

Dataset	Version Date	Current State
Suspended particulate total mercury and monomethylmercury across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013 Co-Principal Investigator, Contact	2016-06-14	Final no updates expected
Mercury speciation across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013 Co-Principal Investigator, Contact	2016-11-18	Final no updates expected

Project: U.S. GEOTRACES North Atlantic Transect (GA03)

Dataset	Version Date	Current State
Dissolved cysteine and glutathione from R/V Knorr KN199-04 in the subtropical North Atlantic Ocean from October 2010 (U.S. GEOTRACES NAT project) Principal Investigator, Contact	2013-03-05	Final no updates expected
Mercury speciation across the US GEOTRACES North Atlantic Zonal Section from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Co-Principal Investigator, Contact	2017-04-11	Final no updates expected
Particulate total mercury and monomethylmercury - US GEOTRACES NATZ from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Co-Principal Investigator	2013-03-05	Final no updates expected
Concentration of atmospheric aerosol total mercury (Hg) from R/V Knorr cruises KN199-04 and KN204-01 (GA03) in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Co-Principal Investigator	2012-12-31	Final no updates expected

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