The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
Isotopic evidence for source changes of nitrate in rain at Bermuda
Abstract
Rainwater collected on the island of Bermuda between January 2000 and January 2001 shows pronounced seasonal variation in the nitrogen and oxygen isotopic composition of nitrate. Higher 15 N/14 N and lower 18 O/16 O ratios are observed in the warm season (April–September) in comparison to the cool season (October–March): The mean δ 15 N of nitrate for the warm and cool seasons is −2.1‰ and −5.9‰ (versus air N 2), respectively, while the mean δ 18 O is 68.6‰ and 76.9‰ (versus Vienna Standard Mean Ocean Water). The few cool season rain events that had high 15 N/14 N and low 18 O/16 O exhibited trajectory paths originating from the south, similar to those of warm season samples. Accordingly, the region from which air is transported to the island determines the 15 N/14 N and 18 O/16 O of the nitrate. The source region provides precursor nitrogen oxides (NOx), influencing the 15 N/14 N of nitrate, and contributes to the chemistry that produces nitrate from NOx, which determines the 18 O/16 O of nitrate. While the range in nitrate 15 N/14 N observed during the cool season is consistent with anthropogenic emissions from North America, the higher warm season 15 N/14 N suggests that lightning is a significant source of nitrate to Bermuda. The isotopic evidence for a significant southern source of nitrate to Bermuda helps to explain the previous observation of unexpectedly high nitrate concentrations in warm season rain. The 18 O/16 O of nitrate in rain at Bermuda is high throughout the year (δ 18 O = 60.3 to 86.5‰) as a result of interactions of precursor NOx with ozone, which has a high 18 O/16 O ratio. The lower nitrate 18 O/16 O in the warm season and in cool season air masses from the south is consistent with elevated concentrations of hydroxyl radical (OH), which dilutes the isotopic signal of ozone. Our limited data set suggests that the relative importance of the OH sink for NOx during the cool season varies spatially over as large a range as is observed between the warm and cool seasons.
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Cites
The thermodynamic properties of isotopic substances
Urey, H. C. (1947) · Journal of the Chemical Society (Resumed) · doi:10.1039/jr9470000562 · Cited by 2,544
A Bacterial Method for the Nitrogen Isotopic Analysis of Nitrate in Seawater and Freshwater
Sigman, D. M., Casciotti, K. L., Andreani, M., Barford, C., Galanter, M., & Böhlke, J. K. (2001) · Analytical Chemistry · doi:10.1021/ac010088e · Cited by 1,956
Self-citationCasciotti, K. L., Sigman, D. M., Hastings, M. G., Böhlke, J. K., & Hilkert, A. (2002) · Analytical Chemistry · doi:10.1021/ac020113w · Cited by 1,595
Self-citationTracing Nitrogen Sources and Cycling in Catchments
Kendall, C. (1998) · Isotope Tracers in Catchment Hydrology · doi:10.1016/b978-0-444-81546-0.50023-9 · Cited by 1,225
Three‐dimensional climatological distribution of tropospheric OH: Update and evaluation
Spivakovsky, C. M., Logan, J. A., Montzka, S. A., Balkanski, Y. J., Foreman‐Fowler, M., Jones, D. B. A., Horowitz, L. W., Fusco, A. C., Brenninkmeijer, C. A. M., Prather, M. J., et al. (2000) · Journal of Geophysical Research: Atmospheres · doi:10.1029/1999jd901006 · Cited by 910
Braman, R. S., & Hendrix, S. A. (1989) · Analytical Chemistry · doi:10.1021/ac00199a007 · Cited by 887
The composition of precipitation in remote areas of the world
Galloway, J. N., Likens, G. E., Keene, W. C., & Miller, J. M. (1982) · Journal of Geophysical Research: Oceans · doi:10.1029/jc087ic11p08771 · Cited by 752
Reaction of N2O5 on tropospheric aerosols: Impact on the global distributions of NOx, O3, and OH
Dentener, F. J., & Crutzen, P. J. (1993) · Journal of Geophysical Research: Atmospheres · doi:10.1029/92jd02979 · Cited by 660
Thiemens, M. H., & Heidenreich, J. E. (1983) · Science · doi:10.1126/science.219.4588.1073 · Cited by 639
NOx from lightning: 1. Global distribution based on lightning physics
Price, C., Penner, J., & Prather, M. (1997) · Journal of Geophysical Research: Atmospheres · doi:10.1029/96jd03504 · Cited by 540
Cited by
Atmospheric composition change – global and regional air quality
Monks, P. S., Granier, C., Fuzzi, S., Stohl, A., Williams, M. L., Akimoto, H., Amann, M., Baklanov, A., Baltensperger, U., Bey, I., et al. (2009) · Atmospheric Environment · doi:10.1016/j.atmosenv.2009.08.021 · Cited by 872
Biological nitrogen fixation: rates, patterns and ecological controls in terrestrial ecosystems
Vitousek, P. M., Menge, D. N. L., Reed, S. C., & Cleveland, C. C. (2013) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2013.0119 · Cited by 800
The global lightning-induced nitrogen oxides source
Schumann, U., & Huntrieser, H. (2007) · Atmospheric Chemistry and Physics · doi:10.5194/acp-7-3823-2007 · Cited by 708
Jia, Y., Yu, G., He, N., Zhan, X., Fang, H., Sheng, W., Zuo, Y., Zhang, D., & Wang, Q. (2014) · Scientific Reports · doi:10.1038/srep03763 · Cited by 306
Aerosol Deposition Impacts on Land and Ocean Carbon Cycles
Mahowald, N. M., Scanza, R., Brahney, J., Goodale, C. L., Hess, P. G., Moore, J. K., & Neff, J. (2017) · Current Climate Change Reports · doi:10.1007/s40641-017-0056-z · Cited by 181
Metadata
- Authors
- Hastings, M. G., Sigman, D. M., & Lipschultz, F.
- Venue
- Journal of Geophysical Research: Atmospheres
- Publisher
- American Geophysical Union (AGU)
- Published
- 2003-12-26
- Volume
- 108
- Issue
- D24
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W1670111816
- Cited by
- 281
- References
- 47
- FWCI
- 2.53
- Type
- journal article
- Language
- en
- Open access
- closed
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