Arid
DOI10.3390/s17102350
Evaluation of Sensible Heat Flux and Evapotranspiration Estimates Using a Surface Layer Scintillometer and a Large Weighing Lysimeter
Moorhead, Jerry E.1; Marek, Gary W.1; Colaizzi, Paul D.1; Gowda, Prasanna H.2; Evett, Steven R.1; Brauer, David K.1; Marek, Thomas H.3; Porter, Dana O.4
通讯作者Moorhead, Jerry E.
来源期刊SENSORS
ISSN1424-8220
出版年2017
卷号17期号:10
英文摘要

Accurate estimates of actual crop evapotranspiration (ET) are important for optimal irrigation water management, especially in arid and semi-arid regions. Common ET sensing methods include Bowen Ratio, Eddy Covariance (EC), and scintillometers. Large weighing lysimeters are considered the ultimate standard for measurement of ET, however, they are expensive to install and maintain. Although EC and scintillometers are less costly and relatively portable, EC has known energy balance closure discrepancies. Previous scintillometer studies used EC for ground-truthing, but no studies considered weighing lysimeters. In this study, a Surface Layer Scintillometer (SLS) was evaluated for accuracy in determining ET as well as sensible and latent heat fluxes, as compared to a large weighing lysimeter in Bushland, TX. The SLS was installed over irrigated grain sorghum (Sorghum bicolor (L.) Moench) for the period 29 July-17 August 2015 and over grain corn (Zea mays L.) for the period 23 June-2 October 2016. Results showed poor correlation for sensible heat flux, but much better correlation with ET, with r(2) values of 0.83 and 0.87 for hourly and daily ET, respectively. The accuracy of the SLS was comparable to other ET sensing instruments with an RMSE of 0.13 mmh(-1) (31%) for hourly ET; however, summing hourly values to a daily time step reduced the ET error to 14% (0.75 mmd(-1)). This level of accuracy indicates that potential exists for the SLS to be used in some water management applications. As few studies have been conducted to evaluate the SLS for ET estimation, or in combination with lysimetric data, further evaluations would be beneficial to investigate the applicability of the SLS in water resources management.


英文关键词irrigation energy balance water management semi-arid regions
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000414931500192
WOS关键词LARGE-APERTURE SCINTILLOMETER ; BALANCE CLOSURE PROBLEM ; HETEROGENEOUS LAND-SURFACE ; TEXAS HIGH-PLAINS ; ENERGY-BALANCE ; EDDY-COVARIANCE ; LATENT-HEAT ; MAPPING EVAPOTRANSPIRATION ; ADVECTIVE ENVIRONMENT ; BOUNDARY-LAYER
WOS类目Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS研究方向Chemistry ; Engineering ; Instruments & Instrumentation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202419
作者单位1.ARS, USDA, Conservat & Prod Res Lab, PO Drawer 10, Bushland, TX 79012 USA;
2.ARS, USDA, Grazinglands Res Lab, 7207 West Cheyenne St, El Reno, OK 73036 USA;
3.Texas A&M AgriLife Res, 6500 Amarillo Blvd W, Amarillo, TX 79106 USA;
4.Texas A&M AgriLife Extens Serv, 1102 E FM 1294, Lubbock, TX 79403 USA
推荐引用方式
GB/T 7714
Moorhead, Jerry E.,Marek, Gary W.,Colaizzi, Paul D.,et al. Evaluation of Sensible Heat Flux and Evapotranspiration Estimates Using a Surface Layer Scintillometer and a Large Weighing Lysimeter[J],2017,17(10).
APA Moorhead, Jerry E..,Marek, Gary W..,Colaizzi, Paul D..,Gowda, Prasanna H..,Evett, Steven R..,...&Porter, Dana O..(2017).Evaluation of Sensible Heat Flux and Evapotranspiration Estimates Using a Surface Layer Scintillometer and a Large Weighing Lysimeter.SENSORS,17(10).
MLA Moorhead, Jerry E.,et al."Evaluation of Sensible Heat Flux and Evapotranspiration Estimates Using a Surface Layer Scintillometer and a Large Weighing Lysimeter".SENSORS 17.10(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Moorhead, Jerry E.]的文章
[Marek, Gary W.]的文章
[Colaizzi, Paul D.]的文章
百度学术
百度学术中相似的文章
[Moorhead, Jerry E.]的文章
[Marek, Gary W.]的文章
[Colaizzi, Paul D.]的文章
必应学术
必应学术中相似的文章
[Moorhead, Jerry E.]的文章
[Marek, Gary W.]的文章
[Colaizzi, Paul D.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。