Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-7179-2020 |
PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest | |
Sarkar, Chinmoy1; Guenther, Alex B.1; Park, Jeong-Hoo2; Seco, Roger3,4; Alyes, Eliane5,10; Batalha, Sarah6; Santana, Raoni7; Kiml, Saewung1; Smith, James8; Tota, Julio7; Vega, Oscar9 | |
2020-06-22 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:12页码:7179-7191 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Korea; Denmark; Brazil; Germany |
英文摘要 | Biogenic volatile organic compounds (BVOCs) are important components of the atmosphere due to their contribution to atmospheric chemistry and biogeochemical cycles. Tropical forests are the largest source of the dominant BVOC emissions (e.g. isoprene and monoterpenes). In this study, we report isoprene and total monoterpene flux measurements with a proton transfer reaction time-of-flight mass spectrometer (PTR-TOF-MS) using the eddy covariance (EC) method at the Tapajos National Forest (2.857 degrees S, 54.959 degrees W), a primary rainforest in eastern Amazonia. Measurements were carried out from 1 to 16 June 2014, during the wet-to-dry transition season. During the measurement period, the measured daytime (06:00-18:00 LT) average isoprene mixing ratios and fluxes were 1.15 +/- 0.60 ppb and 0.55 +/- 0.71 mg C m(-2) h(-1), respectively, whereas the measured daytime average total monoterpene mixing ratios and fluxes were 0.14 +/- 0.10 ppb and 0.20 +/- 0.25 mg C m(-2) h(-1), respectively. Midday (10:00-14:00 LT) average isoprene and total monoterpene mixing ratios were 1.70 +/- 0.49 and 0.24 +/- 0.05 ppb, respectively, whereas mid- day average isoprene and monoterpene fluxes were 1.24 +/- 0.68 and 0.46 +/- 0.22 mg C m(-2) h(-1), respectively. Isoprene and total monoterpene emissions in Tapajos were correlated with ambient temperature and solar radiation. Significant correlation with sensible heat flux, SHF (r(2) = 0.77), was also observed. Measured isoprene and monoterpene fluxes were strongly correlated with each other (r(2) = 0.93). The MEGAN2.1 (Model of Emissions of Gases and Aerosols from Nature version 2.1) model could simulate most of the observed diurnal variations (r(2) = 0.7 to 0.8) but declined a little later in the evening for both isoprene and total monoterpene fluxes. The results also demonstrate the importance of site-specific vegetation emission factors (EFs) for accurately simulating BVOC fluxes in regional and global BVOC emission models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000543687000002 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; PROTON-TRANSFER-REACTION ; VOC EMISSIONS ; AEROSOLS ; CARBON ; GASES ; HYDROCARBONS ; CHEMISTRY ; CLIMATE ; IMPACT |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278114 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 2.Natl Inst Environm Res NIER, Climate & Air Qual Res Dept, Incheon 22689, South Korea; 3.Univ Copenhagen, Dept Biol, Terr Ecol Sect, Copenhagen, Denmark; 4.Univ Copenhagen, Ctr Permafrost CENPERM, Dept Geosci & Nat Resource Management, Copenhagen, Denmark; 5.Natl Inst Amazonian Res, Dept Climate & Environm, BR-69067375 Manaus, Amazonas, Brazil; 6.Univ Amazonia, UNAMA, Ctr Univ Amazonia, BR-68010200 Santarem, Para, Brazil; 7.Univ Fed Oeste Para, Inst Engn & Geociencias, BR-68040255 Santarem, Para, Brazil; 8.Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA; 9.Inst Pesquisas Energet & Nucl, Ctr Quim & Meio Ambiente, BR-05508000 Sao Paulo, Brazil; 10.Max Planck Inst Biogeochem, Dept Biogeochem Proc, D-07745 Jena, Germany |
推荐引用方式 GB/T 7714 | Sarkar, Chinmoy,Guenther, Alex B.,Park, Jeong-Hoo,et al. PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(12):7179-7191. |
APA | Sarkar, Chinmoy.,Guenther, Alex B..,Park, Jeong-Hoo.,Seco, Roger.,Alyes, Eliane.,...&Vega, Oscar.(2020).PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(12),7179-7191. |
MLA | Sarkar, Chinmoy,et al."PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.12(2020):7179-7191. |
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