Annual Temperature Evolution in the Southern Plateau of Spain from the Construction of Regional Climatic Time Series

Galán, E.; Canada, Resources; Fernández, Francisco Santolaria; Cervera, B.

doi:10.1007/978-3-662-04313-4_11

Cited by 17 publications

(17 citation statements)

References 13 publications

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“…The larger spring and summer contribution to the increases in annual temperatures in all three Spanish curves highlights the key role played by the warm seasons and should be the focus of further studies on the possible attribution of anthropogenically induced regional warming. Similar twentieth century variations have been found by other researchers over mainland Spain [Brunet et al, 2001a;Rodríguez-Puebla et al, 2002;Esteban-Parra et al, 2003a, 2003b and for different subregions: northeastern Spain [Brunet et al, 2001c], the middle Ebro River Basin [Abaurrea et al, 2001], Southern Spanish Plateau [Galan et al, 2001], Segura River Basin [Horcas et al, 2001], and Northern Spanish plateau [Morales et al, 2005]. Agreement in neighboring countries has also been reported, over France by Abarca del Río and Mestre [2006] and over Italy by Brunetti et al [2006].…”

Section: Decadal Variability In the Stssupporting

confidence: 70%

“…[54] This is clearly in disagreement with our results (Table 5), which are supported by other groups over different Spanish subregions [Abaurrea et al, 2001;Brunet et al, 2001bBrunet et al, , 2001cBrunet et al, , 2001dBrunet et al, , 2006Galan et al, 2001;Horcas et al, 2001;Morales et al, 2005]. The fact that these studies are mostly analyzing the post-1920 period or have not made any attempt to minimize the screen bias from the analyzed T max and T min records, as well as that in the present study, daytime temperatures have increased twice as much as nighttime temperatures during 1901-2005 (when screen bias minimization from the T max records has had a small effect on the records), points out the robustness of the current results.…”

Section: Summary and Discussioncontrasting

confidence: 57%

“…The warming has not been equally spread throughout the year, winter recording the greatest rates of change. Finally, the results of the majority of the studies on long-term (twentieth century) Spanish temperature change show that maximum temperature has increased at greater rates than minimum temperature both over the whole mainland Spain [Brunet et al, 2001b;Brunet et al, 2005;Brunet et al, 2006] and over different Spanish subregions: the Middle Ebro River Basin [Abaurrea et al, 2001], Northeastern Spain [Brunet et al, 2001d], the southern Spanish plateau [Galan et al, 2001], the Segura River Basin [Horcas et al, 2001], and the northern Spanish plateau [Morales et al, 2005]. However, different results (i.e., higher rates of change calculated for T min than for T max ) were found by Esteban-Parra et al [2003a], Staudt [2004], and Staudt et al [2005] over mainland Spain and Esteban-Parra et al [1995] over the northern Spanish plateau.…”

Section: Introductionmentioning

confidence: 99%

“…[3] Within the last 10 years, many studies, focused on Spanish temperature change on a monthly basis, have shown evidence of warming over the country by analyzing data from groups of stations [e.g., Oñate and Pou, 1996;Esteban-Parra et al, 2003a] or by developing regional time series for peninsular Spain [Brunet et al, 2001a[Brunet et al, , 2001bBrunet et al, 2002;Rodríguez-Puebla et al, 2002;Brunet et al, 2005;Brunet et al, 2006] or for different subregions [Esteban-Parra et al, 1995;Abaurrea et al, 2001;Brunet et al, 2001cBrunet et al, , 2001dGalan et al, 2001;Horcas et al, 2001;Staudt, 2004;Staudt et al, 2005;Morales et al, 2005]. Even though these studies have used different spatial and temporal scales or diverse analytical approaches for assessing data quality and homogeneity, consistent and coherent temporal patterns of warming have been highlighted mainly for the second half of the twentieth century.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Decadal Variability In the Stssupporting

confidence: 70%

Section: Summary and Discussioncontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2007

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“…For the T max annual series, increases in daytime temperatures have been mainly contributed by larger increases in winter and spring, although autumn and summer also present highly significant coefficients. The seasonal trends of the T min regional series indicate winter as the season with the largest contribution to the annual values, while the 1910 1930 1950 1970 1990 1850 1870 1890 1910 1930 1950 1970 1990 Original Tmin data Adjusted Tmin data Abaurrea et al (2001) over the middle Ebro River Basin, Brunet et al (2001b) over northeastern Spain, Galán et al (2001) over the Spanish Southern Plateau and Horcas et al (2001) over southeastern Spain, as well as in excellent agreement with the findings reported by Brunetti et al (2006) over Italy, by Böhm et al (2001) and Auer et al (2006) over the Greater Alpine Region and by Begert et al (2005) over Switzerland. However, slightly different results are seen in a recent contribution (Staudt et al, 2005 based on the PhD thesis of Staudt, 2004), which analysed on a monthly basis about 27 Spanish temperature records for 1869-2002.…”

Section: The Creation Of the Sts And An Initial Trend Analysismentioning

confidence: 99%

The development of a new dataset of Spanish Daily Adjusted Temperature Series (SDATS) (1850–2003)

Brunet

Saladié

Jones³

et al. 2006

Int. J. Climatol.

157

159

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Here we present the development of a new adjusted dataset composed of the 22 longest and most reliable Spanish daily temperature records (maximum and minimum temperatures and derived daily mean temperature) covering the period 1850-2003. The paper describes the approaches followed for compiling, controlling the quality and homogenising these 22 daily Spanish records, leading to the creation of a dataset called 'Spanish Daily Adjusted Temperature Series' (SDATS). An assessment of the sources of data and metadata used is followed by a reliability assessment of the selected network. Data quality control (QC) procedures applied to raw daily maximum (T max ) and minimum (T min ) temperatures and their results are then considered. For the very first time, an empirical minimisation of the bias related to the impact of changing exposure of thermometers on the records has been undertaken. The application of the Standard Normal Homogeneity Test (SNHT) to check homogeneity of raw T max and T min data on a monthly basis is presented, together with a discussion of the causes, magnitudes and timings of the various inhomogeneities. All 22 records contained a number of inhomogeneities (2.6 on average), mainly associated with documented station relocations confirmed by the metadata available. Monthly adjustments calculated for both screen developments and from the SNHT were linearly interpolated to a daily basis following the Vincent et al. (2002) scheme. Finally, the procedures adopted for creating the regional average, the Spanish Temperature Series (STS), together with an exploratory analysis of long-term trends of each T max and T min records, are provided. The final analysis shows that over mainland Spain highly significant rates of temperature increases have occurred for T max and T min (0.12°C/decade and 0.10°C/decade, respectively) over 1850-2003.

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Recent trends in the frequencies of extreme values of daily maximum atmospheric pressure at ground level in the central zone of the Iberian Peninsula

Labajo

Martín

Labajo

et al. 2007

Intl Journal of Climatology

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Using data sets on the daily data of maximum atmospheric pressure at ground level collected at 14 weather stations located in the central zone of the Iberian Peninsula [Spanish central plateau (SCP)], the series of daily maximum pressure anomalies at each station, together with the difference between the daily value and mean daily value for each day of the year for the period between 1961 and 2003, have been established. The regional series of such anomalies were constructed for the whole study zone and for two differentiated parts of the same. As thresholds for the extreme values of the anomaly series, the values corresponding to the P 05 and P 95 percentiles were used. The series of annual frequencies of days with anomaly values below and above the threshold values were constructed for each of the weather stations, together with the average series for the whole study zone and each of its two parts. The corresponding regional average series of seasonal frequencies were also constructed.From an analysis of the trend of the series of the annual frequency of extreme anomaly values in daily maximum pressure it may be deduced that the lowest values show a decreasing annual trend, while the highest ones show an increasing frequency. This indicates that between 1961 and 2003 the number of days per year on the SCP with the highest extreme atmospheric pressure values at ground level increased along the study period. In contrast the number of days per year with lower extreme values decreased. Additionally, analysis of the seasonal frequency series indicated that it was the winter that dictated such behaviour.

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Annual Temperature Evolution in the Southern Plateau of Spain from the Construction of Regional Climatic Time Series

Cited by 17 publications

References 13 publications

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

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

The development of a new dataset of Spanish Daily Adjusted Temperature Series (SDATS) (1850–2003)

Recent trends in the frequencies of extreme values of daily maximum atmospheric pressure at ground level in the central zone of the Iberian Peninsula

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