edu.ucar.opensky::articles:22636 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:32:05.103093 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7xw4nxz https://doi.org/10.11582/2019.00007 https Related Dataset #1 Idealized geoengineering SAI with NorESM The response of permafrost and high-latitude ecosystems under large-scale stratospheric aerosol injection and its termination 2019-06-14T00:00:00Z publication https://n2t.org/ark:/85065/d7xw4nxz https://doi.org/10.1029/2018EF001146 Lee, H. author Ekici, A. author Tjiputra, J. author Muri, H. author Chadburn, S. author Lawrence, David M. author Schwinger, J. author UCAR/NCAR - Library publisher Climate engineering arises as one of the potential methods that could contribute to meeting the 1.5 degrees C global warming target agreed under the Paris Agreement. We examine how permafrost and high-latitude vegetation respond to the large-scale implementation of climate engineering. Specifically, we explore the impacts of applying the solar radiation management method of stratospheric aerosol injections (SAI) on permafrost temperature and the global extent of near-surface permafrost area. We compare the RCP8.5 and RCP4.5 scenarios to several SAI deployment scenarios using the Norwegian Earth System Model (CE1 = moderate SAI scenario to bring down the global mean warming in RCP8.5 to the RCP4.5 level, CE2 = aggresive SAI scenario to maintain the global mean temperature toward the preindustrial level). We show that large-scale application of SAI may help slow down the current rate of permafrost degradation for a wide range of emission scenarios. Between the RCP4.5 and CE1 simulations, the differences in the permafrost degradation may be attributed to the spatial variations in surface air temperature, rainfall, and snowfall, which lead to the differences in the timing of permafrost degradation up to 40 years. Although atmospheric temperatures in CE1 and RCP4.5 simulations are similar, net primary production is higher in CE1 due to CO2 fertilization. Our investigation of permafrost extent under large-scale SAI application scenarios suggests that circum-Arctic permafrost area and extent is rather sensitive to temperature changes created under such SAI application. Our results highlight the importance of investigating the regional effects of climate engineering, particularly in high-latitude ecosystems. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation