Sensitivity of the Irradiation PVGIS SARAH3 to the Inclination of the Plane of Receipt in Two Areas Peat Bowl Central

Ngindu Buabua David; Mumay Muluba John; Mambu Tshipasi le Fils

Title:
Sensitivity of the Irradiation PVGIS SARAH3 to the Inclination of the Plane of Receipt in Two Areas Peat Bowl Central

Authors:
Mambu Tshipasi le Fils | Ngindu Buabua David | Mumay Muluba John

Cite This Article :

Mambu Tshipasi le Fils | Ngindu Buabua David | Mumay Muluba John "Sensitivity of the Irradiation PVGIS SARAH3 to the Inclination of the Plane of Receipt in Two Areas Peat Bowl Central" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-10 | Issue-5, October 2026, pp.441-444, URL: https://www.ijtsrd.com/papers/ijtsrd142268.pdf

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Abstract :
Solar radiation contributes to surface energy balance, purpose PVGIS irradiation estimates depend on receiving-planar geometry. We quantified the effect of changing flat tilt from 18° to 30° for Bikoro and Inongo during 2020-2023. Forty-eight monthly peer per site were analysed using absolute and relative differences, paired t-tests and Wilcoxon signed-rank tests. In Bikoro, mean irradiation decreased from 152.43 to 143.85 kWh m?2 month?1, corresponding to -8.57 kWh m?2 month?1 (-5.91% on average across months). In Inongo, it decreased from 154.12 to 146.27 kWh m?2 month?1, corresponding to -7.84 kWh m?2 month?1 (-5.44%). Differences were statistically clear at both sites (Wilcoxon, p < 10?6), but reversed during May–July, when the 30° plane received slightly more energy. T2m remained unchanged because it is an atmospheric variable independent of planar orientation. Tilt is therefore a modelling parameter that must be reported explicitly and should not be interpreted as a change in local climate.

Keywords :
PVGIS-SARAH3; solar irradiation; flat tilt; sensitivity analysis; Central Congo Basin; Bikoro; Inongo.

Publication Details:

Unique Identification Number : IJTSRD142268

Published In : Volume-10 | Issue-5, October 2026

Page Number(s) : 441-444

Publisher Name : IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470

Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

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