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Titolo:
Direct wet and dry deposition of ammonia, nitric acid, ammonium and nitrate to the Tampa Bay Estuary, FL, USA
Autore:
Poor, N; Pribble, R; Greening, H;
Indirizzi:
Univ S Florida, Coll Publ Hlth, Tampa, FL 33612 USA Univ S Florida Tampa FL USA 33612 da, Coll Publ Hlth, Tampa, FL 33612 USA Janicki Environm Inc, St Petersburg, FL 33704 USA Janicki Environm Inc StPetersburg FL USA 33704 Petersburg, FL 33704 USA Tampa Bay Estuary Program, St Petersburg, FL 33701 USA Tampa Bay Estuary Program St Petersburg FL USA 33701 rsburg, FL 33701 USA
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 23, volume: 35, anno: 2001,
pagine: 3947 - 3955
SICI:
1352-2310(200108)35:23<3947:DWADDO>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
FREE TROPOSPHERE; NITROGEN; SEA; POLLUTANTS; PARTICLES; SULFUR;
Keywords:
buoy models estuary; annular denuder system; uncertainty; net ammonia flux;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Poor, N Univ S Florida, Coll Publ Hlth, Tampa, FL 33612 USA Univ S Florida Tampa FL USA 33612 Publ Hlth, Tampa, FL 33612 USA
Citazione:
N. Poor et al., "Direct wet and dry deposition of ammonia, nitric acid, ammonium and nitrate to the Tampa Bay Estuary, FL, USA", ATMOS ENVIR, 35(23), 2001, pp. 3947-3955

Abstract

The average total (wet plus dry) nitrogen deposition to the Tampa Bay Estuary was 7.3 (+/- 13) kg-N ha(-1) yr(-1) or 760 (+/- 140) metric tons-N yr(-1) for August 1996-July 1999, estimated as a direct deposition rate to the 104,000-ha water surface. This nitrogen flux estimate accounted for ammoniaexchange at the air-sea interface. The uncertainty estimate was based on measurement error. Wet deposition was 56% of the total nitrogen deposition over this period, with an average 0.78 ratio of dry-to-wet deposition. Wet nitrogen deposition rates varied considerably, from near zero to 1.3 kg-N ha(-1) month(-1). About 40% of the total nitrogen flux occurred during the summer months of June, July and August when rainfall was the highest, except for 1997-1998 when the El Nino phenomenon brought unseasonal rainfall. Ammonia/ammonium contributed to 58%, and nitric acid/nitrate 42%, of the total nitrogen deposition over the 3-yr period. In one summer as waters of Tampa Bay warmed above 28 degreesC and ammonium concentrations reached 0.03 mg l(-1), the estimated net flux of ammonia was from the Bay waters to the atmosphere. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/04/20 alle ore 15:45:41