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Ammonia emissions from a Cape fur seal colony, Cape Cross, Namibia

Theobald, M. R.; Crittenden, P. D.; Hunt, A. P.; Tang, Y. S.; Dragosits, U. ORCID: https://orcid.org/0000-0002-9283-6467; Sutton, M. A. ORCID: https://orcid.org/0000-0002-6263-6341. 2006 Ammonia emissions from a Cape fur seal colony, Cape Cross, Namibia. Geophysical Research Letters, 33, L03812. https://doi.org/10.1029/2005GL024384

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Abstract/Summary

Large animal colonies are significant sources of atmospheric NH3 that can potentially increase the nitrogen status of nearby ecosystems. Atmospheric NH3 concentrations were measured at different distances from a Cape fur seal colony at Cape Cross, northwest coast of Namibia, and an atmospheric dispersion model was applied inversely to estimate the total NH3 emission. Mean concentrations ranged from 354 to 0.01 μg NH3 m−3 at 0.01 and 26 km from the source, respectively. The model simulations suggest that the colony emits 25–70 tonnes of NH3-N yr−1, c. 3% of the total N excreted by the seals.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1029/2005GL024384
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: _ Atmospheric Sciences
ISSN: 0094-8276
Format Availability: Electronic, Print
Additional Keywords: Ammonia, Namibia
NORA Subject Terms: Atmospheric Sciences
Date made live: 22 Jun 2007 14:19 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/487

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