Green Ocean Amazon 2014/15 â Scaling Amazon Carbon Water Couplings Field Campaign Report

doi:10.2172/1302243

GSTDTAP > 地球科学

DOI	10.2172/1302243
报告编号	DOE/SC--ARM-16-044
来源ID	OSTI ID: 1302243
	Green Ocean Amazon 2014/15 â Scaling Amazon Carbon Water Couplings Field Campaign Report
	Dubey, Manvendra; Parket, Harrison; Myers, Katherine; Rahn, Thom; Christoffersson, B.; Wunch, Debra; Wennberg, Paul
	2016-08-01
出版年	2016
页数	12
语种	英语
国家	美国
出版者	DOE ARM Climate Research Facility, Pacific Northwest National Laboratory, Richland, WA
领域	地球科学
英文摘要	Forests soak up 25% of the carbon dioxide (CO2) emitted by anthropogenic fossil energy use (10 Gt C y-1), moderating its atmospheric accumulation. How this terrestrial CO2 uptake will evolve with climate change in the 21st Century is largely unknown. Rainforests are the most active ecosystems, with the Amazon basin storing 120 Gt C as biomass and exchanging 18 Gt C y-1 of CO2 via photosynthesis and respiration and fixing carbon at 2-3 kg C m-2 y-1. Furthermore, the intense hydrologic and carbon cycles are tightly coupled in the Amazon where about half of the water is recycled by evapotranspiration and the other half imported from the ocean by Northeasterly trade winds. Climate models predict a drying in the Amazon with reduced carbon uptake while observationally guided assessments indicate sustained uptake. We set out to resolve this huge discrepancy in the size and sign of the future Amazon carbon cycle by performing the first simultaneous regional-scale high-frequency measurements of atmospheric CO2, H2O, HOD, CH4, N2O, and CO at the T3 site in Manacupuru, Brazil, as part of DOE's GoAmazon 2014/15 project. Our data will be used to inform and develop DOE's Community Land Model (CLM) on the tropical carbon-water couplings at the appropriate grid scale (10-50 km). Our measurements will also validate the CO2 data from Japan's Greenhouse gases Observing Satellite (GOSAT) and NASA's Orbiting Carbon Observatory (OCO)-2 satellite (launched in July, 2014). Our data addresses these science questions: 1. How does ecosystem heterogeneity and climate variability influence the rainforest carbon cycle? 2. How well do current tropical ecosystem models simulate the observed regional carbon cycle? 3. Does nitrogen deposition (from the Manaus, Brazil, plume) enhance rainforest carbon uptake?
英文关键词	Amazon rainforest carbon cycle Fourier Transform Spectrometer trace gas column tropical ecosystem carbon cycle models evapotranspiration
URL	查看原文
来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7261
专题	地球科学
推荐引用方式 GB/T 7714	Dubey, Manvendra,Parket, Harrison,Myers, Katherine,et al. Green Ocean Amazon 2014/15 â Scaling Amazon Carbon Water Couplings Field Campaign Report:DOE ARM Climate Research Facility, Pacific Northwest National Laboratory, Richland, WA,2016.