| DOI: | 10.2172/1245979
|
| 报告号: | DOE/SC--ARM/TR-052
|
| 报告题名: | Eddy Correlation Flux Measurement System Handbook |
| 作者: | Cook, D. R.
|
| 出版年: | 2016
|
| 发表日期: | 2016-01-01
|
| 总页数: | 23
|
| 国家: | 美国
|
| 语种: | 英语
|
| 中文主题词: | 碳
; 水蒸汽
; 高温
; 二氧化碳
; 波文比
; 密度
; 甲烷
|
| 主题词: | CARBON
; WATER VAPOR
; HEAT
; CARBON DIOXIDE
; BOWEN RATIO
; DENSITY
; METHANE
|
| 英文摘要: | The eddy correlation (ECOR) flux measurement system provides in situ, half-hour measurements of the surface turbulent fluxes of momentum, sensible heat, latent heat, and carbon dioxide (CO2) (and methane at one Southern Great Plains extended facility (SGP EF) and the North Slope of Alaska Central Facility (NSA CF). The fluxes are obtained with the eddy covariance technique, which involves correlation of the vertical wind component with the horizontal wind component, the air temperature, the water vapor density, and the CO2 concentration. The instruments used are: ⢠a fast-response, three-dimensional (3D) wind sensor (sonic anemometer) to obtain the orthogonal wind components and the speed of sound (SOS) (used to derive the air temperature) ⢠an open-path infrared gas analyzer (IRGA) to obtain the water vapor density and the CO2 concentration, and ⢠an open-path infrared gas analyzer (IRGA) to obtain methane density and methane flux at one SGP EF and at the NSA CF. The ECOR systems are deployed at the locations where other methods for surface flux measurements (e.g., energy balance Bowen ratio [EBBR] systems) are difficult to employ, primarily at the north edge of a field of crops. A Surface Energy Balance System (SEBS) has been installed collocated with each deployed ECOR system in SGP, NSA, Tropical Western Pacific (TWP), ARM Mobile Facility 1 (AMF1), and ARM Mobile Facility 2 (AMF2). The surface energy balance system consists of upwelling and downwelling solar and infrared radiometers within one net radiometer, a wetness sensor, and soil measurements. The SEBS measurements allow the comparison of ECOR sensible and latent heat fluxes with the energy balance determined from the SEBS and provide information on wetting of the sensors for data quality purposes. The SEBS at one SGP and one NSA site also support upwelling and downwelling PAR measurements to qualify those two locations as Ameriflux sites. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1245979
|
| Citation statistics: |
|
| 资源类型: | 研究报告
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42320
|
| 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
|
| File Name/ File Size |
Content Type |
Version |
Access |
License |
|
|---|
| 1245979.pdf（1003KB） | 研究报告 | -- | 开放获取 | | View
Download
|
|
| Recommended Citation: | |
Cook, D. R.. Eddy Correlation Flux Measurement System Handbook. 2016-01-01.
|
|
|