Comparison of sensible and latent heat fluxes from optical-microwave scintillometers and eddy covariance systems with respect to surface energy balance closure
文献类型：期刊论文
| 作者 | Zheng, Chen3; Liu, Shaomin; Song, Lisheng4; Xu, Ziwei; Guo, Jingxin; Ma, Yanfei5; Ju, Qian; Wang, Jiemin1 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2023-03-15 |
| 卷号 | 331页码:109345 |
| 关键词 | Optical -microwave scintillometer Eddy covariance system Latent heat fluxes Sensible heat fluxes Kilometer -scale Surface energy balance closure |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2023.109345 |
| 文献子类 | Article |
| 英文摘要 | The eddy-covariance (EC) method has been widely used to measure sensible (H) and latent (LE) heat fluxes, however, it has limited spatial representativeness (hundreds of meters' scale). Optical-microwave scintillometers (OMS) can directly measure kilometer-scale H and LE, which can be used to validate satellite remote sensing products and model simulations. Therefore, quantitative comparisons and analyses between H and LE measured by OMS and EC are important. In this study, the H and LE values measured by OMS and EC were compared and analyzed over two different surfaces: alpine meadow (homogeneous underlying surface) and irrigated cropland (heterogeneous underlying surface). Results showed that the H (LE) difference between OMS and EC measurements was approximately 17% (18%) and 27% (37%) over the homogeneous and heterogeneous underlying surfaces during the vegetation growing season, respectively. Furthermore, the difference in measured LE from OMS and EC (Delta LEOMS_EC) is caused by the combination of the difference in land surface hydrothermal conditions (LSHCs) and the different principles of OMS and EC measurements. On the one hand, Delta LEOMS_EC varied with the changing LSHCs within the instruments' source areas over the heterogeneous surface, and the value could be decreased by irrigation and precipitation events. On the other hand, OMS averages large-scale measurements over both space and time and does not need to capture all-scale eddies (e.g., large-scale eddies), so the occurrence of advection increases Delta LEOMS_EC. Finally, compared with that of EC system, the energy balance closure ratio of OMS system was similar over the homogeneous underlying surface but significantly increased by 26% over the heterogeneous underlying surface. These results indicate that OMS has a potential advantage in measuring sensible and latent heat fluxes, particularly over heterogeneous underlying surfaces. |
| WOS关键词 | LARGE-APERTURE SCINTILLOMETER ; MILLIMETER-WAVE SCINTILLOMETRY ; LAND-SURFACE ; SUBURBAN ENVIRONMENT ; STRUCTURE PARAMETERS ; SIMILARITY FUNCTIONS ; REFRACTIVE-INDEX ; EFFECTIVE HEIGHT ; RIVER-BASIN ; TEMPERATURE |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000964537000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190538]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Hebei Normal Univ, Hebei Technol Innovat Ctr Remote Sensing Identific, Sch Geog Sci, Shijiazhuang 050024, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China 3.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 5.Anhui Normal Univ, Sch Geog & Tourism, Key Lab Earth Surface Proc & Reg Response Yangtze, Wuhu 241000, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Chen,Liu, Shaomin,Song, Lisheng,et al. Comparison of sensible and latent heat fluxes from optical-microwave scintillometers and eddy covariance systems with respect to surface energy balance closure[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,331:109345. |
| APA | Zheng, Chen.,Liu, Shaomin.,Song, Lisheng.,Xu, Ziwei.,Guo, Jingxin.,...&Wang, Jiemin.(2023).Comparison of sensible and latent heat fluxes from optical-microwave scintillometers and eddy covariance systems with respect to surface energy balance closure.AGRICULTURAL AND FOREST METEOROLOGY,331,109345. |
| MLA | Zheng, Chen,et al."Comparison of sensible and latent heat fluxes from optical-microwave scintillometers and eddy covariance systems with respect to surface energy balance closure".AGRICULTURAL AND FOREST METEOROLOGY 331(2023):109345. |
入库方式： OAI收割
来源：地理科学与资源研究所
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