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  • Power, KatherineStockholm University,Stockholms universitet,Institutionen för naturgeografi,Bolincentret för klimatforskning (tills m KTH & SMHI) (author)

Impacts of large-scale Saharan solar farms on the global terrestrial carbon cycle

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • printrdacarrier

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  • LIBRIS-ID:oai:DiVA.org:su-222206
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-222206URI
  • https://doi.org/10.1088/1748-9326/acf7d8DOI
  • https://lup.lub.lu.se/record/a5a8ce6a-8ffd-4aed-9161-6b292f02c08dURI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Amassing the available solar energy over the Sahara desert, through the installation of a large-scale solar farm, would satisfy the world's current electricity needs. However, such land use changes may affect the global carbon cycle, possibly offsetting mitigation efforts. Here a fully coupled Earth System model EC-Earth was used to investigate the impact of a Saharan solar farm on the terrestrial carbon cycle, simulated with prescribed reduced surface albedo approximating the albedo effect of photovoltaic solar panels over the Sahara desert. The resulting changes to the carbon cycle were an enhancement of the carbon sink across Northern Africa, particularly around the Sahel but a simultaneous weakening of the carbon sink in the Amazon basin. This is observed through spatial pattern changes to the values of net biome production (NBP), more evident during Northern Hemisphere summer season. NBP changes are contributed by competing responses in the net primary production and heterotrophic respiration rates. These changes to carbon exchange correspond to a wetter and warmer climate occurring in Northern Africa and a drier and warmer climate in the Amazon, with stronger driving effects of precipitation. Due to these coupled responses and complex teleconnections, thorough investigation of remote impacts of solar farms are needed to avoid unintended consequences on the terrestrial carbon cycle.

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  • Lu, ZhengyaoLund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science(Swepub:lu)zh8715lu (author)
  • Zhang, Qiong,1971-Stockholm University,Stockholms universitet,Institutionen för naturgeografi,Bolincentret för klimatforskning (tills m KTH & SMHI)(Swepub:su)qzhan (author)
  • Stockholms universitetInstitutionen för naturgeografi (creator_code:org_t)

Related titles

  • In:Environmental Research Letters18:101748-9326

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