Trends of Extreme Temperatures in Europe and China Based on Daily Observations

Zeng, Yan; Jones, Phil; Davies, Trevor; Moberg, Anders; Bergström, Hans; Camuffo, Dario; Cocheo, Claudio; Maugeri, Maurizio; Demarée, G. R.; Verhoeve, T.; Thoen, Erik; Barriendos, Mariano; Rodríguez, Roberto Fernández; Martín‐Vide, Javier; Yang, Chuanguo

doi:10.1007/978-94-010-0371-1_13

Cited by 113 publications

(138 citation statements)

References 23 publications

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“…Two percentile-based extreme indices were defined, similar to those in previous works [23,24]. For a given station, a daily maximum temperature is defined as an extreme if it exceeds the 95th percentile threshold of a set of daily records, including those observed on the same calendar day and 10 neighboring days (5 before and 5 after that day) from 1960-2008.…”

Section: Methodsmentioning

confidence: 99%

Changes of climate extremes of temperature and precipitation in summer in eastern China associated with changes in atmospheric circulation in East Asia during 1960–2008

Dong

Zeng

2012

Chin. Sci. Bull.

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Climate extremes and changes in eastern China are closely related to variations of the East Asian summer monsoon and corresponding atmospheric circulations. The relationship between frequencies of temperature and precipitation extremes in China during the last half century is investigated using Singular Value Decomposition analysis. During 1980-1996, there was a typical pattern with fewer hot days and more precipitation extremes in the northern part of eastern China, and more hot days and fewer precipitation extremes in the southern part. This geographic pattern tended to reverse after 1997, with fewer hot days and more extreme precipitation days south of the Yangtze River and vice versa to the north. Differences in atmospheric circulation between the former and latter periods are presented. We conclude that a mid-level anomalous high/low, upper-level anomalous easterlies/westerlies over the north/south of eastern China, a weakened East Asian summer monsoon and associated upper-tropospheric center of cooling (30°N, 110°E) are all favorable for the changes in frequencies of temperature and precipitation extremes.climate extremes, daily temperature and precipitation observations, Singular Value Decomposition, interdecadal changes in atmospheric circulation Citation:Li J, Dong W J, Yan Z W. Changes of climate extremes of temperature and precipitation in summer in eastern China associated with changes in atmos-

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Section: Methodsmentioning

confidence: 99%

Changes of climate extremes of temperature and precipitation in summer in eastern China associated with changes in atmospheric circulation in East Asia during 1960–2008

Dong

Zeng

2012

Chin. Sci. Bull.

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“…ac.uk/cru/projects/emulate/public/EMULATE-INDICES-SOFTWARE.doc). Analysis of annual and seasonal exceedances of daily T max and T min 10th and 90th percentiles calculated with respect to the 1961 -1990 baseline period, which describe the number of moderately extreme cold days and nights and moderately extreme warm days and nights, respectively, have been studied for the entire period (1850-2005) and also for the other identified subperiods reported by other researchers [Frich et al, 2002;Yan et al, 2002;Klein Tank and Können, 2003;Mokssit, 2003;DellaMarta et al, submitted manuscript, 2006] at larger spatial scales.…”

Section: Assessment Of Long-term Changes In the Occurrence Of Temperamentioning

confidence: 99%

Temporal and spatial temperature variability and change over Spain during 1850–2005

et al. 2007

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[1] We analyze temporal and spatial patterns of temperature change over Spain during the period 1850-2005, using daily maximum (T max ), minimum (T min ), and mean (T mean ) temperatures from the 22 longest and most reliable Spanish records. Over mainland Spain, a significant (at 0.01 level) warming of 0.10°C/decade is found for the annual average of T mean . Autumn and winter contributed slightly more than spring and summer to the annual warming over the 1850-2005 period. The overall warming is also associated with higher rates of change for T max than T min (0.11°versus 0.08°C/decade for . This asymmetric diurnal warming increased in the twentieth century (0.17°versus 0.09°C/decade during 1901 -2005). Nevertheless, at many (few) individual stations, the difference between T max and T min is not statistically significant over 1850-2005 (1901-2005). Principal Component Analysis has been carried out to identify spatial modes of Spanish long-term temperature variability . Three principal spatial patterns are found, Northern Spain, Southeastern and Eastern Spain, and Southwestern Spain. All three patterns show similar significant warming trends. The overall warming has been more associated with reductions in cold extremes, as opposed to increases in warm extremes. Estimated trends in the number of moderately extreme cold days (T max < 10th percentile) and moderately extreme cold nights (T min < 10th percentile) show significant reductions of 0.74 and 0.54 days/decade, respectively, over 1850-2005. Moderately extreme warm days and nights (T max and T min > 90th percentile) increased significantly but at lower rates of 0.53 and 0.49 days/decade.

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“…Climate extremes are receiving increased attention, because the impacts of climate change are felt most strongly through changes in the extremes (Klein Tank et al (2006). Yan et al (2002) found a gradual reduction of the number of cold days in China over the twentieth century and an increase in the number of warm days since 1961. In the study of Liu et al (2005), about two-thirds of all time series for 1961-2000 exhibit increasing trends in indices of precipitation extremes; additionally, coherent regions with increases and decreases are found.…”

Section: Introductionmentioning

confidence: 99%

Trends in extreme daily precipitation and temperature near lake Hövsgöl, Mongolia

Nandintsetseg

Greene

Goulden³

2006

Intl Journal of Climatology

143

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Abstract:A long-term set of daily maximum and minimum temperature and precipitation data are analyzed for the Hövsgöl Basin area, Mongolia. Six indices of extreme temperature and eight indices of extreme precipitation are examined. Results suggest that climate conditions over northern Mongolia are changing as indicated by a warming trend identified during the study period. Significant increases are detected in the annual number of hot days and warm nights in this region. Associated with these changes are concomitant decreases in the annual number of cold days and cold nights. The number of days with precipitation has increased slightly while the annual total precipitation has not significantly increased in northern Mongolia. On an average, there was no significant decrease in the maximum number of consecutive dry days or increase in the wet days. The 5-day precipitation total showed a small increase.

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Trends of Extreme Temperatures in Europe and China Based on Daily Observations

Cited by 113 publications

References 23 publications

Changes of climate extremes of temperature and precipitation in summer in eastern China associated with changes in atmospheric circulation in East Asia during 1960–2008

Changes of climate extremes of temperature and precipitation in summer in eastern China associated with changes in atmospheric circulation in East Asia during 1960–2008

Temporal and spatial temperature variability and change over Spain during 1850–2005

Trends in extreme daily precipitation and temperature near lake Hövsgöl, Mongolia

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