Improved tropical forest biogenic VOC emission factors based on GoAmazon2014/5 airborne observations
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2015
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AMERICAN GEOPHYSICAL UNION FALL MEETING
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Biogenic volatile organic compounds (BVOCs) emitted from terrestrial ecosystems play an important role in atmospheric
chemistry and global climate feedbacks. The immense biological and chemical diversity of BVOC is a challenge for the
numerical modeling of BVOC emissions, especially for tropical forests. The fast response airborne PTR-MS
measurements of BVOC mixing ratios during the GoAmazon2014/5 campaign provide an opportunity to estimate BVOC
emissions from tropical forest landscapes using eddy covariance and mixed layer variance techniques. The average
isoprene emissions based on airborne measurements are 6.16±4.62 mg m h during wet season and 12.89±8.93 mg
m h during dry season. These observations are compared with the spatial and temporal distributions of BVOC
emissions estimated using the Model of Emissions of Gases and Aerosols from Nature (MEGAN) within the framework of
the Community Land Model (CLM). By comparing the emissions estimated from airborne observations with that from
MEGAN simulations, the predictive capability for diverse tropical land cover types are evaluated and an approach for
improving model estimates is outlined. Satellite observations are also applied to investigate the environmental driving
variables for BVOC emissions. OH concentrations are calculated from the observed BVOC mixing ratios by using the
mixed layer mass balance technique and by the gradient in measured eddy covariance fluxes. The calculated values are
in general agreement with OH CIMS observations at the T3 ground site near Manacaparu.
Como referenciar
GU, DASA; GUENTHER, ALEX B.; YU, HAOFEI; SHILLING, JOHN E.; LONGO, KARLA; YANG, QING; HUANG, MAOYI; ZHAO, CHUN; MARTIN, SCOT T.; ARTAXO, PAULO; KIM, SAEWUNG; SECO, ROGER; STAVRAKOU, TRISSEVGENI; TOTA, JULIO; SOUZA, RODRIGO A.F. de; BUSTILLOS, JOSE O.V.; ALVES, ELIANE G.; LIU, YING; SHRIVASTAVA, MANISHKUMAR B.; LENG, GUOYONG; HU, ZHIYUAN; SANTOS, FERNANDO C. dos. Improved tropical forest biogenic VOC emission factors based on GoAmazon2014/5 airborne observations. In: AMERICAN GEOPHYSICAL UNION FALL MEETING, December 14-18, 2015, San Francisco. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/27412. Acesso em: 09 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.