Soil temperatures at Armagh Observatory, Northern Ireland, from 1904 to 2002

Suarez, Avda. Manuel; Butler, C. J.

doi:10.1002/joc.1294

Cited by 51 publications

(29 citation statements)

References 11 publications

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“…Similar results (i.e. increasing trends in soil temperature being stronger than that for air temperature) have been found elsewhere in the TP and in Russia (Zhang et al 2001, García-Suárez & Butler 2006, Du et al 2007.…”

Section: Trends In Other Climate Variablessupporting

confidence: 81%

Frozen ground temperature trends associated with climate change in the Tibetan Plateau Three River Source Region from 1980 to 2014

Luo¹,

Fang²,

Lyu³

et al. 2016

Clim. Res.

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Long-term (1981Long-term ( −2014 trends in soil temperatures at depths ranging from 0−320 cm were used to examine relationships between regional climate change and soil temperatures in the Three River Source Region (TRSR) of the Tibetan Plateau (TP). Air temperature, precipitation, maximum depth of frozen ground and maximum snow depth were also analysed for trends and for correlations with soil temperatures. A significant warming trend was evident in the TRSR during the 35 yr analysed. Significant soil warming was detected, at rates of 0.706°C decade −1 for surface soils (0 cm), 0.477°C decade −1 for shallow layer soils (5−20 cm) and 0.417°C decade −1 for deep layer soils (40−320 cm). There was a clear effect of air temperature on soil temperature, as seen from the concurrent significant increases in air and soil temperature trends and the strong correlation between them. The relationship between precipitation and soil temperatures was complicated. Higher levels of precipitation on the ground also resulted in higher soil temperatures during the summer in the frozen soil, while the process of freezing and thawing had an inhibitory effect on the soil temperature increase. The warming trends in soil temperature are expected to continue with the degradation of frozen soil in the TRSR.

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Section: Trends In Other Climate Variablessupporting

confidence: 81%

Frozen ground temperature trends associated with climate change in the Tibetan Plateau Three River Source Region from 1980 to 2014

Luo¹,

Fang²,

Lyu³

et al. 2016

Clim. Res.

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“…The trends in soil temperature since 1904 in Armagh are positive and clearly significant in all seasons at both 30cm and 100cm. García-Suárez and Butler (2006) found this to be true also for soil temperatures measured at Birr and Valentia. They found the seasonal dependence of the slope of the regression lines to be different in different parts of Ireland, with the rise in temperature steepest in summer in Armagh and Birr and steepest in winter in Valentia.…”

Section: Soil Temperaturesmentioning

confidence: 53%

Trends and Cycles in Long Irish Meteorological Series

Butler¹,

García-Suárez²,

Πάλλη³

2007

Biology & Environment: Proceedings of the Royal Irish Acade

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We have analysed the trends in four long meteorological time series from Armagh Observatory and compared them with series available from other Irish sites. We find that although maximum and minimum temperatures have risen in line with global averages, minima have risen faster than maxima, thereby reducing the daily temperature range. The total number of hours of bright sunshine has fallen since 1885 at the four sites studied, which is consistent with both a rise in cloudiness and the fall in the daily temperature range. Over the past century, soil temperatures at both 30cm and 100cm depths have risen twice as fast as air temperature.Wavelet analysis has found significant cycles with periods of 7Á 8 years, 20Á 23 years and 30 Á 33 years in the seasonal and annual meteorological series from Armagh. Some of these cycles are clearly linked to the North Atlantic Oscillation.

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“…The climate series for this site have been standardised taking into account all known metadata surviving in the Armagh Observatory and UK Meteorological Office (UKMO) archives. The published series include: precipitation García-Suárez et al, 2002), air temperature (Butler et al, 2005a;2005b;2005c); soil temperatures (García-Suárez and Butler, (2006); ; and hours of bright sunshine (Pallé and Butler, 2001;Butler et al, 2005d). This paper extends the Armagh series to include relative humidity.…”

Section: Datamentioning

confidence: 99%

Relative humidity at Armagh Observatory, 1838–2008

Butler¹,

García-Suárez²

2011

Intl Journal of Climatology

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We present a calibrated atmospheric humidity series for Armagh Observatory, Northern Ireland. Beginning in 1838 and continuing to the present day, this series is believed to be the longest presented so far. Daily wet-bulb and dry-bulb temperature readings are corrected for the time of reading and for known instrumental errors to determine mean monthly, seasonal and annual relative humidity (RH) at 09 : 00 GMT from 1838 to 2008 and at 21 : 00 GMT from 1844 to 1964.The mean seasonal and annual time series of RH at this site show only marginal evidence for a trend in RH since the 1880s, however, there is significant decadal and multi-decadal variability, some of which appears to be cyclic. Wavelet analysis indicates the presence of two quasi-periodic components in RH, one ranging from 23.4 to 25.5 years and the other from 36 to 51 years. We discuss potential physical origins of these cycles such as changes in the atmospheric and thermohaline circulation and the solar magnetic cycle. There is a small but significant anti-correlation between RH and northerly winds.Two conspicuous peaks in RH during the 19th century coincide with major infestations of potato blight in Ireland.

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Soil temperatures at Armagh Observatory, Northern Ireland, from 1904 to 2002

Cited by 51 publications

References 11 publications

Frozen ground temperature trends associated with climate change in the Tibetan Plateau Three River Source Region from 1980 to 2014

Frozen ground temperature trends associated with climate change in the Tibetan Plateau Three River Source Region from 1980 to 2014

Trends and Cycles in Long Irish Meteorological Series

Relative humidity at Armagh Observatory, 1838–2008

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