The average influence of decadal solar forcing on the atmosphere in the South Pacific region

  title={The average influence of decadal solar forcing on the atmosphere in the South Pacific region},
  author={Harry van Loon and Gerald A. Meehl},
  journal={Geophysical Research Letters},
Composite mean difference analyses are applied to historical sea level pressure (SLP) and sea surface temperature (SST) data to investigate the spatial dependence of the Pacific climate system response to 11‐year solar forcing. Previous work has found that the SST and SLP responses are most clearly detected near the times of sunspot maxima, which occur as much as two years prior to the centers of the broad decadal solar cycle maxima. In January–February, the SLP response at sunspot maximum is… 

Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations

When the Pacific Decadal Oscillation is in phase with the 11 year sunspot cycle, there are positive sea level pressure (SLP) anomalies in the Gulf of Alaska, nearly no anomalous zonal SLP gradient

Solar Cycle Signals in the Pacific and the Issue of Timings

AbstractThe solar cycle signal in sea level pressure during 1856–2007 is analyzed. Using composites of data from January–February in solar cycle peak years the strong positive signal in the region of

Wintertime Northern Hemisphere Response in the Stratosphere to the Pacific Decadal Oscillation Using the Whole Atmosphere Community Climate Model

AbstractThe response of the Northern Hemisphere winter stratosphere to the Pacific decadal oscillation (PDO) is examined using the Whole Atmosphere Community Climate Model. A 200-yr preindustrial

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

Solar cycle modulation of the Pacific–North American teleconnection influence on North American winter climate

We investigate the role of the 11-year solar cycle in modulating the Pacific–North American (PNA) influence on North American winter climate. The PNA appears to play an important conduit between

Why Is the Influence of Sunspot Peaks on the Ocean and Atmosphere in Northern Winter Seen Mainly in the Pacific Region

  • H. Loon
  • Environmental Science, Physics
  • 2012
The sun at sunspot peaks enhances the climatological means in the Pacific region from the stratosphere to the surface of the sea. The robust signal is physically consistent and statistically

On identifying the role of Sun and the El Niño Southern Oscillation on Indian Summer Monsoon Rainfall

A solar influence on Indian Summer Monsoon (ISM) rainfall, identified in previous studies using the method of solar peak year compositing, may not be robust and can be influenced by other factors

Observations of solar wind related climate effects in the Northern Hemisphere winter

This thesis studies the long-term relation between the solar wind driven energetic particle forcing into the atmosphere and the tropospheric circulation in the Northern Hemisphere winter. The work

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

The Indian summer monsoon during peaks in the 11 year sunspot cycle

An analysis of sea‐level pressure anomalies at 14 sunspot peaks in the 11 year solar cycle in the Indian region in summer shows that the mean sea level pressure anomalies consist of relatively high



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

Solar cycle signals in sea level pressure and sea surface temperature

Abstract. We identify solar cycle signals in 155 years of global sea level pressure (SLP) and sea surface temperature (SST) data using a multiple linear regression approach. In SLP we find 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

Solar Cycles in 150 Years of Global Sea Surface Temperature Data

The purpose of the present work is to demonstrate that a solar cycle response exists in surface temperature using the longest global dataset available, which is in the form of 1854‐2007 sea 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

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

Two mechanisms, the top-down stratospheric response of ozone to fluctuations of shortwave solar forcing and the bottom-up coupled ocean-atmosphere surface response, are included in versions of three global climate models, with either mechanism acting alone or both acting together.

Sunspot activity and oceanic conditions in the northern north Pacific Ocean

During periods of sunspot maxima (approximately every 11 years) the mean winter position of the center of the Aleutian Low pressure system shifts from the Gulf of Alaska to the western Aleutian

Response of global upper ocean temperature to changing solar irradiance

By focusing on time sequences of basin-average and global-average upper ocean temperature (i.e., from 40oS to 60oN) we find temperatures responding to changing solar irradiance in three separate

The Pacific’s Response to Surface Heating in 130 Yr of SST: La Niña–like or El Niño–like?

Abstract Using a modified method of multiple linear regression on instrumented sea surface temperature (SST) in the two longest historical datasets [the Extended Reconstructed SST dataset (ERSST) and