气候变化领域集成服务门户(CCPortal): Sources and Sinks of Isoprene in the Global Open Ocean: Simulated Patterns and Emissions to the Atmosphere

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DOI	10.1029/2019JC015946
	Sources and Sinks of Isoprene in the Global Open Ocean: Simulated Patterns and Emissions to the Atmosphere
	Conte L.; Szopa S.; Aumont O.; Gros V.; Bopp L.
发表日期	2020
ISSN	21699275
卷号	125 期号:9
英文摘要	The ocean is a source of isoprene to the atmosphere. Although their global estimates are relatively low compared with the terrestrial source, these emissions have an influence on atmospheric chemistry. The lack of knowledge about the sources and sinks of isoprene in the ocean has hitherto precluded a precise assessment of when and where these emissions might be significant. Here we use the general circulation and biogeochemistry model Nucleus for European Modelling of the Ocean, Pelagic Interaction Scheme for Carbon and Ecosystem Studies (NEMO-PISCES) to explore different parameterizations of the 3D oceanic sources and sinks of isoprene. In addition, we investigate a representation of the isoprene emission due to photoproduction in the sea surface microlayer. Our model estimates are complemented by a new data compilation of laboratory isoprene production rates and in situ isoprene concentrations. This study constitutes the first attempt to simulate isoprene in a global 3D ocean biogeochemical model. We find that sea surface temperature is an important driver modulating phytoplankton isoprene production and that light levels only play a secondary role at the scale of the global ocean. Furthermore, the use of a variable biochemical consumption rate improves the model-data comparison. We show the importance of isoprene production below the mixed layer and, as a consequence, demonstrate that models based on 2D surface satellite chlorophyll-a could miss up to 18.5% of oceanic isoprene emissions. The oceanic isoprene emissions to the atmosphere are estimated to 0.66 (0.43–0.82) Tg C yr−1 in the low range of previous estimates. ©2020. The Authors.
英文关键词	modeling; oceanic isoprene; open ocean
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186708
作者单位	Laboratoire des Sciences du Climat et de l'Environnement, IPSL, CEA/CNRS/UVSQ, Gif sur Yvette, France; Laboratoire d'Océanographie et de Climatologie: Expérimentation et Approches Numériques, IPSL, Paris, France; Laboratoire de Météorologie Dynamique, IPSL, Ecole Normale Supérieure/PSL Research University/CNRS/Ecole Polytechnique/Sorbonne Université, Paris, France
推荐引用方式 GB/T 7714	Conte L.,Szopa S.,Aumont O.,et al. Sources and Sinks of Isoprene in the Global Open Ocean: Simulated Patterns and Emissions to the Atmosphere[J],2020,125(9).
APA	Conte L.,Szopa S.,Aumont O.,Gros V.,&Bopp L..(2020).Sources and Sinks of Isoprene in the Global Open Ocean: Simulated Patterns and Emissions to the Atmosphere.Journal of Geophysical Research: Oceans,125(9).
MLA	Conte L.,et al."Sources and Sinks of Isoprene in the Global Open Ocean: Simulated Patterns and Emissions to the Atmosphere".Journal of Geophysical Research: Oceans 125.9(2020).