Solar forcing on antarctic terrestrial climate: A study by means of GPS observations

Wayan Suparta, Baharudin Yatim, Mohd A Mohd Ali

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

With a view to difficulties with explaining the physical mechanism of solar forcing on the Earth's climate, we applied a new approach of determining and quantifying an influence of solar-related events on water vapor variability by correlating the total electron content (TEC) and precipitable water vapor (PWV), both derived from ground-based GPS observations. In this study, ionospheric TEC and atmospheric PWV values are employed as solar activity and terrestrial climate parameters, respectively. Three-year GPS data at five stations in Antarctica are analyzed on a daily mean basis. Results show significant correlation between TEC and PWV differences during storms-affected days. The high correlation between the daily mean values of TEC and PWV, both of which follow the seasonal signals and subsisting downward trend, suggests an influence of solar activity on climate variability in Antarctica. These quantities are determined by changes of the upper-atmosphere level, which varies in conformity with the zenith angle of the Sun.

Original languageEnglish
Pages (from-to)374-391
Number of pages18
JournalActa Geophysica
Volume58
Issue number2
DOIs
Publication statusPublished - 2010

Fingerprint

precipitable water
climate
water vapor
GPS
Antarctic regions
solar activity
electrons
upper atmosphere
zenith angle
zenith
ionospherics
stations
trends
total electron content
Antarctica

Keywords

  • Antarctic climate
  • Antarctica
  • precipitable water vapor
  • solar-geomagnetic storm
  • total electron content

ASJC Scopus subject areas

  • Geophysics

Cite this

Solar forcing on antarctic terrestrial climate : A study by means of GPS observations. / Suparta, Wayan; Yatim, Baharudin; Ali, Mohd A Mohd.

In: Acta Geophysica, Vol. 58, No. 2, 2010, p. 374-391.

Research output: Contribution to journalArticle

Suparta, Wayan ; Yatim, Baharudin ; Ali, Mohd A Mohd. / Solar forcing on antarctic terrestrial climate : A study by means of GPS observations. In: Acta Geophysica. 2010 ; Vol. 58, No. 2. pp. 374-391.
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