The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony.

Theobald, Mark Richard and Crittenden, Peter D. and Sim Tang, Y. and Sutton, Mark A. (2013). The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony.. "Atmospheric Environment", v. 81 ; pp. 320-329. ISSN 1352-2310. https://doi.org/10.1016/j.atmosenv.2013.09.009.

Description

Title: The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony.
Author/s:
  • Theobald, Mark Richard
  • Crittenden, Peter D.
  • Sim Tang, Y.
  • Sutton, Mark A.
Item Type: Article
Título de Revista/Publicación: Atmospheric Environment
Date: December 2013
ISSN: 1352-2310
Volume: 81
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Química y Análisis Agrícola [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (849kB)

Abstract

Penguin colonies represent some of the most concentrated sources of ammonia emissions to the atmosphere in the world. The ammonia emitted into the atmosphere can have a large influence on the nitrogen cycling of ecosystems near the colonies. However, despite the ecological importance of the emissions, no measurements of ammonia emissions from penguin colonies have been made. The objective of this work was to determine the ammonia emission rate of a penguin colony using inverse-dispersion modelling and gradient methods. We measured meteorological variables and mean atmospheric concentrations of ammonia at seven locations near a colony of Adélie penguins in Antarctica to provide input data for inverse-dispersion modelling. Three different atmospheric dispersion models (ADMS, LADD and a Lagrangian stochastic model) were used to provide a robust emission estimate. The Lagrangian stochastic model was applied both in ‘forwards’ and ‘backwards’ mode to compare the difference between the two approaches. In addition, the aerodynamic gradient method was applied using vertical profiles of mean ammonia concentrations measured near the centre of the colony. The emission estimates derived from the simulations of the three dispersion models and the aerodynamic gradient method agreed quite well, giving a mean emission of 1.1 g ammonia per breeding pair per day (95% confidence interval: 0.4–2.5 g ammonia per breeding pair per day). This emission rate represents a volatilisation of 1.9% of the estimated nitrogen excretion of the penguins, which agrees well with that estimated from a temperature-dependent bioenergetics model. We found that, in this study, the Lagrangian stochastic model seemed to give more reliable emission estimates in ‘forwards’ mode than in ‘backwards’ mode due to the assumptions made.

More information

Item ID: 25905
DC Identifier: http://oa.upm.es/25905/
OAI Identifier: oai:oa.upm.es:25905
DOI: 10.1016/j.atmosenv.2013.09.009
Official URL: http://www.sciencedirect.com/science/article/pii/S1352231013006973
Deposited by: Memoria Investigacion
Deposited on: 18 Jun 2014 15:08
Last Modified: 31 Dec 2015 23:56
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM