edu.ucar.gdex::93ba060c-33a4-42ca-b1e9-5b7c8ee3c49e eng; USA utf8 dataset GDEX Curator UCAR/NCAR - GDEX datahelp@ucar.edu pointOfContact 2022-07-21T11:56:20-06:00 ISO 19115 Geographic information - Metadata ISO 19115:2003(E) https://doi.org/10.5065/D6C53JPS https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD028776 https browser Volcanic Radiative Forcing From 1979 to 2015 CCSM run aschmidt, Atmosphere Climatology, Unspecified Time Frequency, version 1 2021-10-21 publication 2021-10-21 modified https://doi.org/10.5065/D6C53JPS UCAR/NCAR - GDEX datahelp@ucar.edu publisher Schmidt, Anja author Mills, Michael J UCAR/NCAR - Atmospheric Chemistry Observations and Modeling Laboratory mmills@ucar.edu author We calculate the climatic effects of explosive volcanic eruptions between 1979 and 2015 using a more complex climate model simulation than has been used previously. This includes many of the chemical and physical processes that lead to the formation of volcanic aerosol. Volcanic aerosols are tiny airborne particles that are important for Earth's climate because they reflect sunlight and trap thermal infrared radiative energy. In line with previous studies, we find that the most powerful eruptions between 1979 and 2015 had a substantial cooling effect. However, we calculate that their effect on climate is about 20% weaker than previous estimates used by the Intergovernmental Panel on Climate Change (IPCC). In our model simulation this is mainly a result of the volcanic aerosol particles affecting ice clouds, making these clouds less transparent. We also find that it is very rare to have a period with relatively few notable explosive eruptions as was the case during 1996–2002. Furthermore, eruptions of small-to-moderate size occur frequently and decrease the transparency of the stratosphere by as much as all nonvolcanic sources of aerosol particles combined. These small-sized volcanic eruptions therefore cause a small but noticeable surface cooling and so should be included in climate model simulations, which is rarely done. Michael Mills UCAR/NCAR - Atmospheric Chemistry Observations and Modeling Laboratory mmills@ucar.edu pointOfContact application/x-netcdf Dataset DataCite Resource Type 2014-10-16 revision 3.1 DataCite Metadata Working Group originator resourceTypeGeneral EARTH SCIENCE > ATMOSPHERE > AEROSOLS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFUR DIOXIDE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FORCING theme NASA/GCMD Earth Science Keywords Science and Services Keywords 2018-03-15 revision 8.6 Global Change Master Directory (GCMD). 2018. GCMD Keywords, Version 8.6. Greenbelt, MD: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://earthdata.nasa.gov/gcmd-forum OTHER > MODELS > CESM > NCAR COMMUNITY EARTH SYSTEM MODEL theme NASA/GCMD Earth Science Keywords Platforms and Sources Keywords 2018-03-15 revision 8.6 Global Change Master Directory (GCMD). 2018. GCMD Keywords, Version 8.6. Greenbelt, MD: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://earthdata.nasa.gov/gcmd-forum Creative Commons Attribution 4.0 International License. None eng; USA 1979-01-01 2015-01-01 application/x-netcdf UCAR/NCAR - CISL - CDP resourceProvider https://gdex.ucar.edu/dataset/id/93ba060c-33a4-42ca-b1e9-5b7c8ee3c49e.html https browser CCSM run aschmidt, Atmosphere Climatology, Unspecified Time Frequency, version 1 Metadata Link download