Identification

Title

CESM/WACCM Runs Under Different Solar Conditions

Abstract

Fundamental understanding of the climate responses to solar variability is obscured by the large and complex climate variability. This long-standing issue is addressed here by examining climate responses under an extreme quiet sun (EQS) scenario, obtained by making the sun void of all magnetic fields. It is used to drive a coupled climate model with whole atmosphere and ocean components. The simulations reveal significant responses, and elucidate aspects of the responses to changes of troposphere/surface forcing and stratospheric forcing that are similar and those that are different. Planetary waves (PWs) play a key role in both regional-scale responses and the mean circulation changes. Intermediate scale stationary waves and regional climate respond to solar forcing changes in the troposphere and stratosphere in a similar way, due to similar subtropical wind changes in the upper troposphere. The patterns of these changes are similar to those found in a warming climate, but with opposite signs. Responses of the largest scale PW during NH and SH winters differ, leading to hemispheric differences in the interplay between dynamical and radiative processes. The analysis exposes remarkable general similarities between climate responses in EQS simulations and those under nominal solar minimum conditions, even though the latter may not always appear to be statistically significant. We have made five sets of CESM/WACCM climate simulations to study climate responses to extremely quiet solar conditions. The five sets are under nominal solar maximum conditions, nominal solar minimal conditions, extreme quiet solar conditions, and two mixed forcing conditions (extreme low UV, extreme low visible and IR). Each set is 200 years long. DOI: https://doi.org/10.26024/vprc-nm50

Resource type

dataset

Resource locator

https://www.earthsystemgrid.org/dataset/id/a4bd8065-e401-4e46-bd80-65e4015e46e9.html

protocol: https

applicationProfile: browser

name: CESM/WACCM Runs Under Different Solar Conditions

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

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2023-07-25

date type

modified

effective date

2023-07-12

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License.

Limitations on public access

N/A

Responsible organisations

Responsible party

organisation name

UCAR/NCAR - Climate and Global Dynamics Laboratory

email address

esg-support@earthsystemgrid.org

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

UCAR/NCAR - Climate and Global Dynamics Laboratory

email address

esg-support@earthsystemgrid.org

responsible party role

pointOfContact

Metadata date

2023-11-12T10:05:02

Metadata language