CCSM run aschmidt, Atmosphere Climatology, Unspecified Time Frequency, version 1

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.

To Access Resource:

Questions? Email Resource Support Contact:

  • Michael Mills
    UCAR/NCAR - Atmospheric Chemistry Observations and Modeling Laboratory

Temporal Range

  • Begin:  1979-01-01
    End:  2015-01-01


Resource Type dataset
Temporal Range Begin 1979-01-01
Temporal Range End 2015-01-01
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Volcanic Radiative Forcing From 1979 to 2015 :

Additional Information N/A
Resource Format application/x-netcdf
Standardized Resource Format NetCDF
Asset Size N/A
Legal Constraints

Creative Commons Attribution 4.0 International License.

Access Constraints None
Software Implementation Language N/A

Resource Support Name Michael Mills
Resource Support Email
Resource Support Organization UCAR/NCAR - Atmospheric Chemistry Observations and Modeling Laboratory
Distributor N/A
Metadata Contact Name GDEX Curator
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - GDEX

Author Schmidt, Anja
Mills, Michael J
Publisher UCAR/NCAR - GDEX
Publication Date 2021-10-21
Digital Object Identifier (DOI)
Alternate Identifier N/A
Resource Version N/A
Topic Category N/A
Progress N/A
Metadata Date 2022-07-21T11:56:20-06:00
Metadata Record Identifier edu.ucar.gdex::93ba060c-33a4-42ca-b1e9-5b7c8ee3c49e
Metadata Language eng; USA
Suggested Citation Schmidt, Anja, Mills, Michael J. (2021). CCSM run aschmidt, Atmosphere Climatology, Unspecified Time Frequency, version 1. UCAR/NCAR - GDEX. Accessed 20 June 2024.

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