利用基于大孔径闪烁计的蒸散发站对印度北部异质农业景观进行地表能量通量和能量平衡闭合研究

Q3 Agricultural and Biological Sciences

Journal of Agrometeorology Pub Date : 2024-03-01 DOI:10.54386/jam.v26i1.2447

A. Danodia, N. Patel, V. K. Sehgal, R. Singh

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引用次数: 0

摘要

这项研究旨在利用大孔径闪烁计和微气象塔了解地表能量通量的周期模式和能量平衡闭合。基于莫宁-奥布霍夫相似理论的 "闪烁计 "是一种观测折射率结构参数的独立技术，具有精确测量显热通量的潜力。本文讨论了 2017 年 8 月至 2018 年 6 月期间的地表能量平衡成分和能量平衡闭合情况。在 9 月（98.6 Wm-2）、5 月（13.9 Wm-2）、6 月（53.3 Wm-2）和 8 月（82.1 Wm-2）分别观测到了最大平均能量通量 Rn、G、H 和 LE。研究期间观察到的总平均蒸散发为 1.36 毫米/天-1。这种闪烁测量技术可进一步用于从极地轨道卫星到地球静止卫星在异质和起伏地形上的蒸散建模。

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Surface energy fluxes and energy balance closure using large aperture scintillometer-based ET station on heterogeneous agricultural landscape in north India

This study was carried out to understand the pattern of surface energy fluxes over a periodical scale and energy balance closure using Large Aperture Scintillometer and Micrometeorological tower. The standalone technique as ‘Scintillometry’ which observes the structure parameter of refractive index based on Monin-Obukhov Similarity theory, has the potential to measure the sensible heat flux precisely. This paper discusses the surface energy balance components and energy balance closure over a period of August 2017 to June 2018. The maximum mean energy fluxes Rn, G, H and LE were observed in September (98.6 Wm-2), May (13.9 Wm-2), June (53.3 Wm-2) and August (82.1 Wm-2), respectively. The overall mean ET was observed at the rate of 1.36 mm day-1 during the study period. This scintillometry technique may further use in evapotranspiration modelling from polar orbiting satellite to geostationary satellite over a heterogeneous and undulated landscape.

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来源期刊

Journal of Agrometeorology 农林科学-农艺学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Agrometeorology (ISSN 0972-1665) , is a quarterly publication of Association of Agrometeorologists appearing in March, June, September and December. Since its beginning in 1999 till 2016, it was a half yearly publication appearing in June and December. In addition to regular issues, Association also brings out the special issues of the journal covering selected papers presented in seminar symposia organized by the Association.