Validation of global irradiance derived from INSAT-3D over India

Kamath, HG and Srinivasan, J (2020) Validation of global irradiance derived from INSAT-3D over India. In: Solar Energy, 202 . pp. 45-54.

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Abstract

Geostationary satellites offer the possibility of producing high-frequency time series irradiance datasets, covering a large geographical area. Here, we derive half-hourly global irradiance (GHI) at 4 km spatial resolution from visible channel radiance of INSAT-3D satellite using a semi-empirical model and validate it against 19 ground stations over 2015�16, across India. Our model uses the Advanced Solis clear-sky model with monthly climatological values of modern-era retrospective analysis for research and applications-2 (MERRA-2) aerosol optical depth (AOD) and precipitable water (PW) as inputs. The relative root mean squared error (rRMSE) and relative mean bias error (rMBE) are 24.02 and �0.05, respectively. Over the validation period, INSAT-3D derived GHI outperformed SARAH-E model and MERRA-2 reanalysis GHI. © 2020 International Solar Energy Society

Item Type:	Journal Article
Publication:	Solar Energy
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	The copyright of this article belongs to PERGAMON-ELSEVIER SCIENCE LTD
Department/Centre:	Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited:	19 Jun 2020 07:41
Last Modified:	19 Jun 2020 07:41
URI:	http://eprints.iisc.ac.in/id/eprint/65109

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