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| DOI | 10.5194/hess-24-967-2020 |
| Impacts of non-ideality and the thermodynamic pressure work term p1v on the surface energy balance | |
| Massman W.J. | |
| 发表日期 | 2020 |
| ISSN | 1027-5606 |
| 起始页码 | 967 |
| 结束页码 | 975 |
| 卷号 | 24期号:2 |
| 英文摘要 | Present-day eddy-covariance-based methods for measuring the energy and mass exchange between the earth's surface and the atmosphere often do not close the surface energy balance. Frequently the turbulent energy fluxes (sum of sensible and latent heat) underestimate the available energy (net incoming radiation minus the soil conductive heat flux) by 10 % to 20 % or more. Over the last 3 or 4 decades several reasons for this underestimation have been proposed, but nothing completely definitive has been found. This study examines the contribution of two rarely discussed aspects of atmospheric thermodynamics to this underestimation: the non-ideality of atmospheric gases and the significance the water vapor flux has for the sensible heat flux, an issue related to the pressure work term pI"v. The results were not unexpected; i.e., these effects are too small to account for all of the imbalance between the sum of the turbulent fluxes and the available energy. Together they may contribute 1 %-3 % of the difference (or 10 % to 15 % of the percentage imbalance). © 2020. This work is distributed under the Creative Commons Attribution 4.0 License. |
| 语种 | 英语 |
| scopus关键词 | Atmospheric thermodynamics; Energy balance; Interfacial energy; Available energy; Conductive heat flux; Earth's surface; Eddy covariance; Sensible heat flux; Thermodynamic pressure; Turbulent energies; Water vapor flux; Heat flux; atmospheric gas; atmospheric pressure; eddy covariance; energy balance; energy flux; gas flow; surface energy; thermodynamics; water vapor |
| 来源期刊 | Hydrology and Earth System Sciences
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/159487 |
| 作者单位 | Massman, W.J., USDA Forest Service, Rocky Mountain Research Station, 240 West Prospect Road, Fort Collins, CO 80526, United States |
| 推荐引用方式 GB/T 7714 | Massman W.J.. Impacts of non-ideality and the thermodynamic pressure work term p1v on the surface energy balance[J],2020,24(2). |
| APA | Massman W.J..(2020).Impacts of non-ideality and the thermodynamic pressure work term p1v on the surface energy balance.Hydrology and Earth System Sciences,24(2). |
| MLA | Massman W.J.."Impacts of non-ideality and the thermodynamic pressure work term p1v on the surface energy balance".Hydrology and Earth System Sciences 24.2(2020). |
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