| DOI: | 10.2172/1092485
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| 报告号: | DE SC0004925
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| 报告题名: | Evaluating the Contribution of Climate Forcing and Forest Dynamics to Accelerating Carbon Sequestration by Forest Ecosystems in the Northeastern U.S. |
| 作者: | Fitzjarrald, David Roy [Atmos Sciences Res Ctr]
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| 出版年: | 2013
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| 发表日期: | 2013-09-11
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 碳
; 太阳辐射
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| 主题词: | CARBON
; SOLAR RADIATION
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| 英文摘要: | We used 10 Hz eddy flux signals and 0.2 Hz incident radiation (global shortwave and PAR) records from Harvard Forest (Massachusetts) and Tapajos National Forest (Brazil) to establish empirical relationships among directly measured cloud type and cover percentage and corresponding PAR fluctuations and its diffuse fraction. In future work such a cloud characterization will be related to water and light use efficiency estimates for each of these ecosystems. We developed empirical relationships to link sky cover type and fraction (measured with the ceilometer) to incident direct and diffuse PAR. We developed a methodology for constructing synthetic incident solar radiation time series based on operational reports of sky cover and cloud type from National Weather Service METAR reports. The aim of this work is to document the temporal and spectral properties radiation incident on the canopy, as a first step toward developing a sky-type parameterization for the net carbon uptake models. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1092485
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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/41002
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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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| 1092485.pdf（1877KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Fitzjarrald, David Roy [Atmos Sciences Res Ctr]. Evaluating the Contribution of Climate Forcing and Forest Dynamics to Accelerating Carbon Sequestration by Forest Ecosystems in the Northeastern U.S.. 2013-01-01.
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