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

Authors

  • ABHISHEK DANODIA Agriculture and Soils Department, Indian Institute of Remote Sensing, Dehradun, Uttarakhand, India
  • N.R. PATEL Agriculture and Soils Department, Indian Institute of Remote Sensing, Dehradun, Uttarakhand, India
  • V.K. SEHGAL ICAR- India Agricultural Research Institute, Pusa Campus, New Delhi, India
  • R.P. SINGH Indian Institute of Remote Sensing ISRO, Govt. of India, Dehradun- 248001, Uttarakhand, India

DOI:

https://doi.org/10.54386/jam.v26i1.2447

Keywords:

Scintillometry, energy flux, sensible heat flux, energy balance closure, evapotranspiration

Abstract

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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Published

01-03-2024

How to Cite

DANODIA, A., PATEL, N., SEHGAL, V., & SINGH, R. (2024). Surface energy fluxes and energy balance closure using large aperture scintillometer-based ET station on heterogeneous agricultural landscape in north India. Journal of Agrometeorology, 26(1), 18–24. https://doi.org/10.54386/jam.v26i1.2447

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