Hydroxylamine as a potential indicator of nitrification in the open ocean
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| Autores principales: | , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2019
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| _version_ | 1867168572661301248 |
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| author | Korth, Frederike Kock, Annette Arévalo-Martínez, Damian L Bange, Hermann W |
| author_facet | Korth, Frederike Kock, Annette Arévalo-Martínez, Damian L Bange, Hermann W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Hydroxylamine (NH 2 OH), a short-lived intermediate in the nitrogen cycle, is a potential precursor of nitrous oxide (N 2 O) in the ocean. However, measurements of NH 2 OH in the ocean are sparse. Here we present a data set of depth profiles of NH 2 OH from the equatorial Atlantic Ocean and the eastern tropical South Pacific and compare it to N 2 O, nitrate, and nitrite profiles under varying oxygen conditions. The presence of NH 2 OH in surface waters points toward surface nitrification in the upper 100 m. Overall, we found a ratio of 1:3 between NH 2 OH and N 2 O in open ocean areas when oxygen concentrations were >50 μmol/L. In the equatorial Atlantic Ocean and the open ocean eastern tropical South Pacific, where nitrification is the dominant N 2 O production pathway, stepwise multiple regressions demonstrated that N 2 O, NH 2 OH, and nitrate concentrations were highly correlated, suggesting that NH 2 OH is a potential indicator for nitrification. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_908012 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Hydroxylamine as a potential indicator of nitrification in the open ocean Korth, Frederike Kock, Annette Arévalo-Martínez, Damian L Bange, Hermann W Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754; SOPRAN; Surface Ocean Processes in the Anthropocene; water column Hydroxylamine (NH 2 OH), a short-lived intermediate in the nitrogen cycle, is a potential precursor of nitrous oxide (N 2 O) in the ocean. However, measurements of NH 2 OH in the ocean are sparse. Here we present a data set of depth profiles of NH 2 OH from the equatorial Atlantic Ocean and the eastern tropical South Pacific and compare it to N 2 O, nitrate, and nitrite profiles under varying oxygen conditions. The presence of NH 2 OH in surface waters points toward surface nitrification in the upper 100 m. Overall, we found a ratio of 1:3 between NH 2 OH and N 2 O in open ocean areas when oxygen concentrations were >50 μmol/L. In the equatorial Atlantic Ocean and the open ocean eastern tropical South Pacific, where nitrification is the dominant N 2 O production pathway, stepwise multiple regressions demonstrated that N 2 O, NH 2 OH, and nitrate concentrations were highly correlated, suggesting that NH 2 OH is a potential indicator for nitrification. |
| title | Hydroxylamine as a potential indicator of nitrification in the open ocean |
| topic | Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754; SOPRAN; Surface Ocean Processes in the Anthropocene; water column |
| url | https://doi.org/10.1594/PANGAEA.908012 |