Displacements of the Aleutian Low and the Hawaiian High Pressure Systems During the Solar Cycle.

Details Displacements of the Aleutian Low and the Hawaiian High Pressure Systems During the Solar Cycle. Displacements of the Aleutian Low and the Hawaiian High Pressure Systems During the Solar Cycle.

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh11e..03h&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH11E-03

Physics

1610 Atmosphere (0315, 0325), 1650 Solar Variability, 7538 Solar Irradiance

Scientific paper

Most empirical studies undertaken in the past focused on the connection of the solar cycle with climatic variables at specific geographic locations. We have investigated the influence of the 11-year solar cycle on extensive climate variables, the semi-permanent centers of action. Based on analysis of more than one hundred years of sea level pressure data we conclude that extremes in solar variability as measured by the annual sunspot numbers correlate highly with the locations of the semi-permanent pressure systems in the North Pacific. The Aleutian Low moves westward during solar maximum conditions and the Hawaiian High moves northward. Also, the area-weighted surface pressure of the Aleutian Low is significantly higher near the solar maximum. As a result large anomalies in regional climatic conditions in North America and East Asia are generated in the extreme phases of the solar cycle. Concomitant displacements of planetary waves in the troposphere and the stratosphere suggest pathways that couple solar variations to surface climate.

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