https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5312279
*Authors* Kayode Philip Adenuga Posted: *19 Jun 2025* *Abstract* This study investigates the coupling effect between climate change and net radiation using solar geoengineering techniques and climate scenarios intervention across West Africa. Using datasets, ERA5 a reanalysis dataset (0.25° × 0.25° grid) derived from the archives of ERA5 database of European Center for Medium-Range Weather Forecast for the period of 43 years (1980-2022), ARISE-SAI model simulations (0.9° latitude × 1.25° longitude grid) spanning a period of 56 years (2015-2070), CMIP6 at different climate scenarios (SSP245 and SSP585; various resolutions ranging from 1° × 1° to 2.8° × 2.8°) for the period of 86 years (2015-2100), and Historical spanned a period of 35 years (1946-1980). Net radiation, a critical component of Earth’s energy balance, influences regional climate, hydrology and agricultural productivity, and ensemble averages of selected global climate models (GCMs) were used to capture fine-scale monthly variations in net radiation, minimizing biases and coarse resolution limitations. Results revealed a latitudinal gradient in net radiation, significantly higher values (~115±15 W/m², peaking up to 320±20 W/m²), indicating significant warming in humid zones and lower values (50±30W/m²) Seasonal variations, solar radiation, cloud cover, and atmospheric circulation patterns significantly influenced these spatial distributions. Bias analysis against ERA5 showed climate scenarios underestimated net radiation, with arid zones exhibiting strong cooling trends (-235±35W/m²) and humid zones reflecting moderate cooling (-105±25W/m²).It can be concluded from the results that climate scenarios underestimated present day dataset (ERA5), with strong cooling in the arid zones and moderate cooling trends in the humid zones of West Africa. These findings highlight the importance of addressing biases in climate scenario models to enhance the reliability of future climate projections and inform targeted climate adaptation and mitigation strategies. This study recommends refining climate models, evaluating trade-offs of geoengineering interventions, and improving stakeholder engagement to enhance future climate resilience in the region. *Source: SSRN* -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/geoengineering/CAHJsh9-AonPDVaRF8988MYZCQ34zvPKm5_1Pja4orhbeRuDm5w%40mail.gmail.com.
