Identification

Title

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

Abstract

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.

Resource type

dataset

Resource locator

https://gdex.ucar.edu/dataset/id/93ba060c-33a4-42ca-b1e9-5b7c8ee3c49e.html

protocol: https

applicationProfile: browser

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

description: Metadata Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

Keywords

Keyword set

keyword value

Dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > AEROSOLS

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFUR DIOXIDE

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FORCING

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

Keyword set

keyword value

Other > Models > Cesm > Ncar Community Earth System Model

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

1979-01-01

End position

2015-01-01

Dataset reference date

date type

publication

effective date

2021-10-21

date type

modified

effective date

2021-10-21

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

application/x-netcdf

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License.

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

UCAR/NCAR - Atmospheric Chemistry Observations and Modeling Laboratory

email address

mmills@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

UCAR/NCAR - GDEX

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata date

2022-07-21T11:56:20-06:00

Metadata language