Amplifying the Pacific Climate System Response to a Small 11-Year Solar Cycle Forcing

  title={Amplifying the Pacific Climate System Response to a Small 11-Year Solar Cycle Forcing},
  author={Gerald A. Meehl and Julie M. Arblaster and Katja Matthes and Fabrizio Sassi and Harry van Loon},
  pages={1114 - 1118}
More Than the Sum of the Parts The radiative output of the Sun varies distinctly with the 11-year cycle of sunspots, although the change in energy output is small—less than a tenth of a percent in magnitude. Nevertheless, that small variation produces changes in sea surface temperatures two or three times as large as it should, and the mechanism by which this occurs has remained unclear. Meehl et al. (p. 1114; see the news story by Kerr) employ three global, coupled climate models to simulate… 

Mechanisms Involved in the Amplification of the 11-yr Solar Cycle Signal in the Tropical Pacific Ocean

AbstractIt is debated whether the response of the tropical Pacific Ocean to the 11-yr solar cycle forcing resembles a La Nina– or El Nino–like signal. To address this issue, ensemble simulations

Dynamical Response of the Tropical Pacific Ocean to Solar Forcing During the Early Holocene

A record of Holocene sea surface temperature in the eastern equatorial Pacific Ocean that shows cooling as solar output increased and warming as the Sun dimmed, resulting from dynamical control of El Niño and La Niña episodes by solar radiative forcing of Earth's climate.

Possible impacts of a future grand solar minimum on climate: Stratospheric and global circulation changes

The results show that a large decline in solar activity over the 21st century could have important impacts on the stratosphere and regional surface climate.

The role of the oceans in shaping the tropospheric response to the 11 year solar cycle

Observational data indicate a weakening and poleward shift of the subtropical tropospheric jets in the maximum phase of the 11 year solar cycle, commonly explained in terms of a direct “top‐down”

Impact of the solar cycle and the QBO on the atmosphere and the ocean

The Solar Cycle and the Quasi-Biennial Oscillation are two major components of natural climate variability. Their direct and indirect influences in the stratosphere and troposphere are subject of a

Phase-Locked Impact of the 11-Year Solar Cycle on Tropical Pacific Decadal Variability

As an important external forcing, the effect of the 11-yr solar cycle on the tropical Pacific decadal variability is an interesting question. Here, we systematically investigate the phase-locking of

The Sun's Role in Climate

The 11 year solar cycle signal in transient simulations from the whole atmosphere community climate model

The atmospheric response to the 11 year solar cycle (SC) and its combination with the quasi-biennal oscillation (QBO) are analyzed in four simulations of the Whole Atmosphere Community Climate Model

Lagged Responses of the Tropical Pacific to the 11-yr Solar Cycle Forcing and Possible Mechanisms

This paper uses two subsets of ensemble historical-Nat simulations and pi-Control simulations from CMIP5 as well as observational/reanalysis datasets to investigate responses of the tropical Pacific

Similar patterns of tropical precipitation and circulation changes under solar and greenhouse gas forcing

Theory and model evidence indicate a higher global hydrological sensitivity for the same amount of surface warming to solar as to greenhouse gas (GHG) forcing, but regional patterns are highly



A Coupled Air–Sea Response Mechanism to Solar Forcing in the Pacific Region

The 11-yr solar cycle [decadal solar oscillation (DSO)] at its peaks strengthens the climatological precipitation maxima in the tropical Pacific during northern winter. Results from two global

SORCE Contributions to New Understanding of Global Change and Solar Variability

An array of empirical evidence in the space era, and in the past, suggests that climate responds to solar activity. The response mechanisms are thought to be some combination of direct surface

A Lagged Warm Event–Like Response to Peaks in Solar Forcing in the Pacific Region

Abstract The forced response coincident with peaks in the 11-yr decadal solar oscillation (DSO) has been shown to resemble a cold event or La Nina–like pattern during December–February (DJF) in the

Coupled air-sea response to solar forcing in the Pacific region during northern winter

[1] Observations since the middle of the 19th century show that the decadal solar oscillation at its peaks strengthens the major convergence zones in the tropical Pacific (Intertropical Convergence

The Response of Tropospheric Circulation to Perturbations in Lower-Stratospheric Temperature

A multiple regression analysis of the NCEP-NCAR reanalysis dataset shows a response to increased solar activity of a weakening and poleward shift of the subtropical jets. This signal is separable

The effects of solar variability on the Earth's climate

  • J. Haigh
  • Environmental Science
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 2002
Observational data and radiative forcing considerations and the results of energy-balance models and general circulation models suggest that the warming during the latter part of the 20th century cannot be ascribed entirely to solar effects, but chemical and dynamical processes in the middle atmosphere may act to amplify the solar impact.

Patterns of tropospheric response to solar variability

Despite numerous reports of apparent climate responses to the 11‐year solar cycle, the Sun's role for weather and climate has remained a matter of controversy. One important reason is the difficulty

Response of tropical global ocean temperature to the Sun's quasi‐decadal UV radiative forcing of the stratosphere

[1] The quasi-decadal oscillation (QDO) in the Earth's climate system fluctuated in phase with the 11-year period signal in solar total irradiance (STI) variability throughout the 20th century. The

Dynamical response to the solar cycle

[1] The dynamical impact of the 11-year solar cycle is investigated with the focus on the stratopause region where solar ultraviolet heating is greatest. The most important variation in solar forcing

Solar and Greenhouse Gas Forcing and Climate Response in the Twentieth Century

Ensemble experiments with a global coupled climate model are performed for the twentieth century with time-evolving solar, greenhouse gas, sulfate aerosol (direct effect), and ozone (tropospheric and