Dust-aerosol optical depth in CMIP6 models and implication for PV-power generation

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Title:Main Title: Dust-aerosol optical depth in CMIP6 models and implication for PV-power generation
Description:Abstract: Renewable energy produced by photovoltaic (PV) power plants strongly depends on the meteorological conditions. Desert-dust aerosols impair the radiative transfer in the atmosphere, but their effect on PV power is poorly understood from a climatological perspective. Past climate model simulations are known to have a large spread in dust-aerosol loading. With the new CMIP6 model simulations now being available, we revisit the climate-model spread in representing desert-dust aerosols for 1985 to 2014, assess the dust-aerosol changes until 2100, and estimate the associated differences in the PV power potential. To this end, we evaluate the dust aerosol optical depth (DOD) in the CMIP6 historical simulations using modern reanalysis and satellite data. Our results highlight the persistent model spread for DOD in CMIP6, but a multi-model mean DOD close to the reanalysis and satellite data. We identify only slight changes in both the global and regional mean DOD in a green scenario (ssp126) at the end of the 21st century. For a future with continued strong warming (ssp245, ssp585), the simulations suggest an increase (decrease) in regional DOD associated with North-African, Transatlantic transport, and Australia (Taklamakan Desert) dust emissions. The differences in simulated DOD imply changes in the PV power potential for regions affected by dust aerosols. We compute the change in the PV power potential from surface irradiance, temperature, and wind speed in the CMIP6 scenarios against present-day. Our results point to a PV power potential for North Africa that is similarly affected by a future increase in temperature and decrease in irradiance associated with more dust aerosols. In mid-latitude regions of the northern hemisphere, a future change in PV power potential is controlled by changes of clouds and temperature. Our PV power estimates underline the impacts of the model uncertainty in DOD, the degree of future warming, and the unclear response of clouds and circulation to the warming.
Identifier:https://doi.org/10.5194/egusphere-egu21-2049 (DOI)
Citation Advice:Scheele, R. and Fiedler, S.: Dust-aerosol optical depth in CMIP6 models and implication for PV-power generation, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-2049, https://doi.org/10.5194/egusphere-egu21-2049, 2021.
Responsible Party
Creator:Robert Scheele (Author)
Contributor:Stephanie Fiedler (Supervisor)
Publisher:CRC1211 Database (CRC1211DB)
Publication Year:2021
CRC1211 Topic:Climate
Related Subproject:A3
Subject:Keyword: Meteorology
Geogr. Information Topic:Climatology/Meteorology/Atmosphere
File Details
Data Type:Event - Talk
File Size:276 KB
Date:Other: 19.04.2021
Mime Type:application/pdf
Data Format:PDF
Download Permission:Free
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Licence:[Creative Commons] Attribution 4.0 International (CC BY 4.0)
Specific Information - Presentation
Presenter:Robert Scheele
Presentation Date:19th of April, 2021
Presentation Type:Talk
Event Type:Conference
Event Location:online
Event Duration:19th of April, 2021 - 30th of April, 2021
Event Website:https://www.egu21.eu/
Metadata Details
Metadata Creator:Rovina Pinto
Metadata Created:19.07.2021
Metadata Last Updated:19.07.2021
Funding Phase:2
Metadata Language:English
Metadata Version:V50
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