High Resolution Underway Nitrous Oxide Measurements (atmosphere) during METEOR cruise M100/1
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2019
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| _version_ | 1867170371200876544 |
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| author | Arévalo-Martínez, Damian L Bange, Hermann W |
| author_facet | Arévalo-Martínez, Damian L Bange, Hermann W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Benguela Upwelling System (BUS) is the most productive of all eastern boundary upwelling ecosystems and it hosts a well-developed oxygen minimum zone. As such, the BUS is a potential hotspot for production of N2O, a potent greenhouse gas derived from microbially driven decay of sinking organic matter. Yet, the extent at which near-surface waters emit N2O to the atmosphere in the BUS is highly uncertain. Here we present the first high-resolution surface measurements of N2O across the northern part of the BUS (nBUS).We found strong gradients with a threefold increase in N2O concentrations near the coast as compared with open ocean waters. Our observations show enhanced sea-to-air fluxes of N2O (up to 1.67 nmol m−2 s−1) in association with local upwelling cells. Based on our data we suggest that the nBUS can account for 13% of the total coastal upwelling source of N2O to the atmosphere |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_902512 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | High Resolution Underway Nitrous Oxide Measurements (atmosphere) during METEOR cruise M100/1 Arévalo-Martínez, Damian L Bange, Hermann W ALTITUDE; BARO; Barometer; Benguela Upwelling; CT; DATE/TIME; Gas chromatography (unfiltered); LATITUDE; LONGITUDE; M100/1; M100/1-track; Meteor (1986); Nitrous oxide, dissolved; Nitrous oxide, dry-air mole fraction; Pressure, atmospheric; SOPRAN; Surface Ocean Processes in the Anthropocene; Underway cruise track measurements The Benguela Upwelling System (BUS) is the most productive of all eastern boundary upwelling ecosystems and it hosts a well-developed oxygen minimum zone. As such, the BUS is a potential hotspot for production of N2O, a potent greenhouse gas derived from microbially driven decay of sinking organic matter. Yet, the extent at which near-surface waters emit N2O to the atmosphere in the BUS is highly uncertain. Here we present the first high-resolution surface measurements of N2O across the northern part of the BUS (nBUS).We found strong gradients with a threefold increase in N2O concentrations near the coast as compared with open ocean waters. Our observations show enhanced sea-to-air fluxes of N2O (up to 1.67 nmol m−2 s−1) in association with local upwelling cells. Based on our data we suggest that the nBUS can account for 13% of the total coastal upwelling source of N2O to the atmosphere |
| title | High Resolution Underway Nitrous Oxide Measurements (atmosphere) during METEOR cruise M100/1 |
| topic | ALTITUDE; BARO; Barometer; Benguela Upwelling; CT; DATE/TIME; Gas chromatography (unfiltered); LATITUDE; LONGITUDE; M100/1; M100/1-track; Meteor (1986); Nitrous oxide, dissolved; Nitrous oxide, dry-air mole fraction; Pressure, atmospheric; SOPRAN; Surface Ocean Processes in the Anthropocene; Underway cruise track measurements |
| url | https://doi.org/10.1594/PANGAEA.902512 |