TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Neher, Ina
A1  - Crewell, Susanne
A1  - Meilinger, Stefanie
A1  - Pfeifroth, Uwe
A1  - Trentmann, Jörg
T1  - Photovoltaic power potential in West Africa using long-term satellite data
JF  - Atmospheric Chemistry and Physics
N2  - This paper addresses long-term historical changes in solar irradiance in West Africa (3 to 20° N and 20° W to 16° E) and the implications for photovoltaic systems. Here, we use satellite irradiance (Surface Solar Radiation Data Set – Heliosat, Edition 2.1 – SARAH-2.1) and temperature data from a reanalysis (ERA5) to derive photovoltaic yields. Based on 35 years of data (1983–2017), the temporal and regional variability as well as long-term trends in global and direct horizontal irradiance are analyzed. Furthermore, a detailed time series analysis is undertaken at four locations. According to the high spatial resolution SARAH-2.1 data record (0.05°×0.05°), solar irradiance is largest (up to a 300 W m−2 daily average) in the Sahara and the Sahel zone with a positive trend (up to 5 W m−2 per decade) and a lower temporal variability (<75 W m−2 between 1983 and 2017 for daily averages). In contrast, the solar irradiance is lower in southern West Africa (between 200 W m−2 and 250 W m−2) with a negative trend (up to −5 W m−2 per decade) and a higher temporal variability (up to 150 W m−2). The positive trend in the north is mostly connected to the dry season, whereas the negative trend in the south occurs during the wet season. Both trends show 95 % significance. Photovoltaic (PV) yields show a strong meridional gradient with the lowest values of around 4 kWh  kWp−1 in southern West Africa and values of more than 5.5 kWh  kWp−1 in the Sahara and Sahel zone.
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-51057
SN  - 1680-7324
SS  - 1680-7324
U6  - https://doi.org/10.5194/acp-20-12871-2020
DO  - https://doi.org/10.5194/acp-20-12871-2020
VL  - 20
IS  - 21
SP  - 12871
EP  - 12888
S1  - 18
PB  - Copernicus Publications
CY  - Göttingen
ER  -