| DOI: | 10.2172/1321708
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| 报告号: | LA-UR--16-26740
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| 报告题名: | GoAmazon â Scaling Amazon Carbon Water Couplings |
| 作者: | Dubey, Manvendra Krishna
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| 出版年: | 2016
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| 发表日期: | 2016-09-06
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| 总页数: | 9
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Planetary Sciences
; Climate Carbon Tropics Forests CO2 Water
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| 中文主题词: | 碳
; 蒸散
; 森林
; 生物量
; 二氧化碳
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| 主题词: | CARBON
; EVAPOTRANSPIRATION
; FORESTS
; BIOMASS
; CARBON DIOXIDE
|
| 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 will 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 project. Our data will be used to inform and develop DOE's CLM on the tropical carbon-water couplings at the appropriate grid scale (10-50km). Our measurements will also validate the CO2 data from Japan's GOSAT and NASA's imminent OCO-2 satellite (launch date July 2014). |
| URL: | http://www.osti.gov/scitech/servlets/purl/1321708
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42016
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1321708.pdf（4951KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Dubey, Manvendra Krishna. GoAmazon â Scaling Amazon Carbon Water Couplings. 2016-01-01.
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