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Titolo:
A GLOBAL-MODEL OF NATURAL VOLATILE ORGANIC-COMPOUND EMISSIONS
Autore:
GUENTHER A; HEWITT CN; ERICKSON D; FALL R; GERON C; GRAEDEL T; HARLEY P; KLINGER L; LERDAU M; MCKAY WA; PIERCE T; SCHOLES B; STEINBRECHER R; TALLAMRAJU R; TAYLOR J; ZIMMERMAN P;
Indirizzi:
NATL CTR ATMOSPHER RES,1850 TABLE MESA DR BOULDER CO 80303 UNIV COLORADO,COOPERAT INST RES ENVIRONM SCI BOULDER CO 80309 US EPA,AIR & ENERGY ENGN RES LAB RES TRIANGLE PK NC 27711 AT&T BELL LABS MURRAY HILL NJ 07974 UNIV LANCASTER,INST ENVIRONM & BIOL SCI LANCASTER LA1 4YQ ENGLAND NASA,AMES RES CTR MOFFETT FIELD CA 94035 HARWELL LAB HARWELL 110RA OXON ENGLAND US EPA,ATMOSPHER RES & EXPOSURE LAB RES TRIANGLE PK NC 27711 DIV FOREST SCI & TECHNOL PRETORIA 0001 SOUTH AFRICA INST ATMOSPHAR UMWELT W-1800 GARMISCH PARTENKIR GERMANY AUSTRALIAN NATL UNIV CANBERRA ACT 2601 AUSTRALIA UNIV COLORADO,DEPT CHEM & BIOCHEM BOULDER CO 80309
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
fascicolo: D5, volume: 100, anno: 1995,
pagine: 8873 - 8892
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIOGENIC HYDROCARBON EMISSIONS; CALIFORNIA CENTRAL VALLEY; ISOPRENE EMISSION; ATMOSPHERIC HYDROCARBONS; RATE VARIABILITY; CARBON-MONOXIDE; BOUNDARY-LAYER; CLIMATE-CHANGE; GAS-EXCHANGE; WATER-STRESS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
93
Recensione:
Indirizzi per estratti:
Citazione:
A. Guenther et al., "A GLOBAL-MODEL OF NATURAL VOLATILE ORGANIC-COMPOUND EMISSIONS", JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 100(D5), 1995, pp. 8873-8892

Abstract

Numerical assessments of global air quality and potential changes in atmospheric chemical constituents require estimates of the surface fluxes of a variety of trace gas species. We have developed a global model to estimate emissions of volatile organic compounds from natural sources (NVOC). Methane is not considered here and has been reviewed in detail elsewhere. The model has a highly resolved spatial grid (0.5 degrees x 0.5 degrees latitude/longitude) and generates hourly average emission estimates. Chemical species are grouped into four categories: isoprene, monoterpenes, other reactive VOC (ORVOC), and other VOC (OVOC). NVOC emissions from oceans are estimated as a function of geophysical variables from a general circulation model and ocean color satellite data. Emissions from plant foliage are estimated from ecosystem specific biomass and emission factors and algorithms describing light and temperature dependence of NVOC emissions. Foliar density estimates arebased on climatic variables and satellite data. Temporal variations in the model are driven by monthly estimates of biomass and temperatureand hourly light estimates. The annual global VOC flux is estimated to be 1150 Tg C, composed of 44% isoprene, 11% monoterpenes, 22.5% other reactive VOC, and 22.5% other VOC. Large uncertainties exist for each of these estimates and particularly for compounds other than isoprene and monoterpenes. Tropical woodlands (rain forest, seasonal, drought-deciduous, and savanna) contribute about half of all global natural VOC emissions. Croplands, shrublands and other woodlands contribute 10-20% apiece. Isoprene emissions calculated for temperate regions are asmuch as a factor of 5 higher than previous estimates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:15:16