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Award: OCE-0961098

Award Title: Expression of Microbial Nitrification in the Stable Isotopic Systematics of Oceanic Nitrite and Nitrate

Funding Source: NSF Division of Ocean Sciences (NSF OCE)

Program Manager: Donald L. Rice

Dataset	Latest Version Date	Current State
Nitrate + nitrite concentration and d15N from the Eastern Tropical South Pacific collected on the R/V Atlantis (AT15-61) and R/V Melville (MV1104) in 2010-2011 (N2 fixation ETSP project, Microbial Nitrification project)	2015-04-09	Final no updates expected
Measurements of dissolved organic nitrogen concentration and d15N from R/V Atlantis and R/V Melville cruises in the Eastern Tropical South Pacific from 2010 to 2011.	2018-03-06	Final no updates expected
Dissolved nitrite and ammonium concentration data from R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011 in the Eastern Tropical South Pacific	2020-08-06	Final no updates expected
Nitrous oxide (N2O) concentrations and associated physicochemical parameters from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP)	2023-07-28	Final no updates expected
Ammonia oxidation, nitrite oxidation, and nitrate reduction rates from R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011 in the Eastern Tropical South Pacific	2020-10-14	Final no updates expected
Water column amoA and Nitrospina-like 16S rRNA gene abundances from qPCR in the Eastern Tropical South Pacific using seawater collected on R/V Atlantis (AT15-61) cruise in Jan-Feb 2010 and R/V Melville (MV1104) cruise in Mar-Apr 2011.	2020-10-14	Final no updates expected
Processed CTD data from cruises R/V Atlantis (AT15-61) in Jan-Feb 2010 and R/V Melville (MV1104) in Mar-Apr 2011 in the Eastern Tropical South Pacific	2020-10-28	Final no updates expected
Nitrate (NO3-) and Nitrite (NO2-) d15N and d18O from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP)	2023-07-10	Final no updates expected

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Principal Investigator: Karen L. Casciotti (Woods Hole Oceanographic Institution)