Long-term variability of solar irradiance and its implications for photovoltaic power in West Africa

doi:10.5194/acp-2020-306

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-306
	Long-term variability of solar irradiance and its implications for photovoltaic power in West Africa
	Ina Neher, Susanne Crewell, Stefanie Meilinger, Uwe Pfeifroth, and Jörg Trentmann
	2020-05-20
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	This paper addresses long-term changes in solar irradiance for West Africa (3° N to 20° N and 20° W to 16° E) and its implications for photovoltaic power systems. Here we use satellite irradiance (Surface Solar Radiation Data Set-Heliosat, Edition 2.1, SARAH-2.1) to derive photovoltaic yields. Based on 35 years of data (1983–2017) the temporal and regional variability as well as long-term trends of global and direct horizontal irradiance are analyzed. Furthermore, at four locations a detailed time series analysis is undertaken. The dry and the wet season are considered separately. According to the high resolved SARAH-2.1 data record (0.05° x 0.05°), solar irradiance is largest (with up to 300 W/m² daily average) in the Sahara and the Sahel zone with a positive trend (up to 5 W/m²/decade) and a lower variability (< 75 W/m²). Whereas, the solar irradiance is lower in southern West Africa (between 200 W/m² and 250 W/m²) with a negative trend (up to −5 W/m²/decade) and a higher variability (up to 150 W/m²). The positive trend in the North is mostly connected to the dry season, while the negative trend in the South occurs during the wet season. PV yields show a strong meridional gradient with lowest values around 4 kWh/kWp in southern West Africa and reach more than 5.5 kWh/kWp in the Sahara and Sahel zone.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/270386
专题	地球科学
推荐引用方式 GB/T 7714	Ina Neher, Susanne Crewell, Stefanie Meilinger, Uwe Pfeifroth, and Jörg Trentmann. Long-term variability of solar irradiance and its implications for photovoltaic power in West Africa[J]. Atmospheric Chemistry and Physics,2020.
APA	Ina Neher, Susanne Crewell, Stefanie Meilinger, Uwe Pfeifroth, and Jörg Trentmann.(2020).Long-term variability of solar irradiance and its implications for photovoltaic power in West Africa.Atmospheric Chemistry and Physics.
MLA	Ina Neher, Susanne Crewell, Stefanie Meilinger, Uwe Pfeifroth, and Jörg Trentmann."Long-term variability of solar irradiance and its implications for photovoltaic power in West Africa".Atmospheric Chemistry and Physics (2020).