Extremely Cold and Warm Days in the Spanish Central Plateau: Analysis of Its Evolution from 1961 to 2010

Angel L.  Labajo; Quintín  Martín; Juan  Labajo; Moises  Egido; José L.  Labajo

doi:10.4236/acs.2014.42023

Angel L. Labajo, Quintín Martín, Juan Labajo, Moises Egido, José L. Labajo

Abstract: From anomalies of daily data of maximum and minimum temperatures, that have been obtained as difference between the real data of every day and the average data of the corresponding day of the year in each of the 14 observatories of the Spanish Central Plateau (8 in North subplateau and 6 in the South subplateau) between 1961-2010, the extremely cold and warm days are determined, throughout all the year, in all the study area and the two different sub areas. We consider a day as an extremely cold day (ECD) if achieves simultaneously the following conditions: the anomaly of minimum temperature of the day is lower than the value of the P05 percentile of the series of daily anomalies of minimum temperature, and the value of the anomaly of daily maximum temperature is lower, as well, than the P05 percentile of the corresponding series of anomalies. The values of the thresholds determined by these percentiles are obtained considering the complete anomalies daily series of temperature for all the study regions. In order to establish the extremely warm days the methodology is the same but the conditions are: the anomaly of minimum temperature of the day is greater than the value of the P95 percentile of the series of daily anomalies of minimum temperature, and the value of the anomaly of daily maximum temperature is greater as well than the P95 percentile of the corresponding anomalies series. Once the extremely warm and cold days are determined, throughout the year in the period of time considered, for each zone, the corresponding series of annual frequencies are obtained. The analysis of tendency of these series indicates that in all the cases the tendency of the frequency of the extremely cold days is decreasing. Considering a linear model for the temporary behavior of the frequency, the reduce is of the order of 1 day every 10 years. In the case of the extremely warm days its annual frequency presents an increasing tendency, which indicates that the number of extremely warm days per year has been increased during the studied time interval. In agreement with the linear model of behavior, the increase is, approximately, of the order of 1 day per decade.

Keywords: Cold Day; Warm Day; Frequency; Trend; Linear Model

Cite this paper: Labajo, A. , Martín, Q. , Labajo, J. , Egido, M. and Labajo, J. (2014) Extremely Cold and Warm Days in the Spanish Central Plateau: Analysis of Its Evolution from 1961 to 2010. Atmospheric and Climate Sciences, 4, 199-210. doi: 10.4236/acs.2014.42023.

References

[1] Peterson, T.C. and Easterling, D.R. (1994) Creation of Homogeneous Composite Climatological Reference Series. International Journal of Climatology, 14, 671-679. http://dx.doi.org/10.1002/ joc.3370140606

[2] Jones, P.D. and Hulme, M. (1996) Calculating Regional Climate Times Series for Temperature Precipitation: Methods and Illustrations. International Journal of Climatology, 16, 361-377. http://dx.doi.org/10.1002/(SICI)1097-0088(199604)16:4<361::AID-JOC53>3.0.CO;2-F

[3] Labajo, J.L. and Piorno, A. (1999) Comportamiento de variables climáticas en Castilla y León: Temperatura mínima media anua. En: Raso, J.M. and Martín-Vide,J., Eds., La climatología espa?ola en los albores del siglo XXI, Publicaciones de la AEC, Serie A no 1, 259-266.

[4] Galán, E., Canada, R., Fernández, F. and Cervera, B. (2001) Annual Temperature Evolution in the Southern Plateau of Spain from the Construction of Regional Climatic Time Series. In: Brunet, M. and López, D., Eds., Detecting and Modelling Regional Climate Change, Springer-Verlag, Berlin, 119-131. http://dx.doi.org/10.1007/978-3-662-04313-4_11

[5] Jones, P.D. and Moberg, A. (2003) Hemispheric and Large-Scale Air Temperature Variations: An Extensive Revision and an Update to 2001. Journal of Climate, 16, 206-223.
http://dx.doi.org/10.1175/1520-0442(2003)016<0206:HALSSA>2.0.CO;2

[6] Labajo, J.L., Martín, Q., Piorno, A., Labajo, A.L., Morales, C. and Ortega, M.T. (2004) Primeros resultados del análisis del comportamiento de los valores extremos de la presión atmosférica, a nivel del suelo, en Castilla y León. En: García Codrón, J.C., Diego Lia?o, C., Arróyabe, F.D.E., Hernáez, P., Garmendia Pedraja, C. and Rasilla álvarez, D. Eds., El Clima entre el Mar y la Monta?a, Publicaciones de la AEC, Serie A, no 4, 313-321.

[7] IPCC (2007) Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. IPCC Secretariat, WMO, Geneva.

[8] Plummer, N., Salinger, M.J., Nicholls, N., Suppiah, R., Hennessy, K.J., Leighton, R.M., Trewin, B., Page, C.M. and Lough, J.M. (1999) Changes in Climate Extremes over the Australian Region and New Zeland during the Twentieth Century. Climatic Change, 42, 183-202. http://dx.doi.org/10.1175/1520-0442(2003)016<0206:HALSSA>2.0.CO;2

[9] López-Díaz, J.A. (2002) A Nonparametric Test for Trends in the Occurrence of Rare Events. Journal of Climate, 16, 2602-2614. http://dx.doi.org/10.1175/1520-0442(2003)016<2602:ANTFTI>2.0.CO;2

[10] Morales, C.G., Ortega, M.T., Labajo, J.L. and Piorno, A. (2004). Recent Trends and temporal Behavior of Termal Variables in the Region of Castilla-León (Spain). Atmósfera, 18, 71-90.

[11] Ortega, M.T., Morales, C., Labajo, J.L., Labajo, A.L., Piorno, A. and Martín, Q. (2006) Tendencias recientes en las frecuencias de los valores extremos de temperatura en la región de Castilla y León. En: Cuadrat, J.M., Saz, M.A., Vicente, S.M., Lanjeri, S., DE Luis, M. and González, J.C., Eds., Clima, Sociedad y Medio Ambiente. Publicaciones de la AEC, Serie A, no 5 , 251-259.

[12] Labajo, J.L., Martín, Q., Labajo, A.L., Piorno, A., Ortega, M.T. and Morales, C. (2008) Recent Trends in the Frequencies of Extreme Values of Daily Maximum Atmospheric Pressure at Ground Level in the Central Zone of the Iberian Peninsula. International Journal of Climatollogy, 28, 1227-1238. http://dx.doi.org/10.1002/joc.1631

[13] Manton, M.J., Della-Marta, P.M., Haylock, M.R., Hennessy, K.J., Nicholls, N., Chambers, L.E., Collins, D.A., Daw, G., Finet, A., Gunawan, D., Inape, K., Isobe, H., Kestin, T.S., Lefale, P., Leyu, C.H., Lwin, T., Maitrepierre, L., Ouprasitwong, N., Page, C.M., Pahalad, J., Plummer, N., Salinger, M.J., Suppiah, R., Tran, V.L., Trewin, B., Tibig, I. and Yee, D. (2001) Trends in Extreme Daily Rainfall and Temperature in Southeast Asia and the South Pacific: 1961-1998. International Journal of Climatology, 21, 269-284. http://dx.doi.org/10.1002/joc.1631

[14] Salinger, M.J. and Griffiths, G.M. (2001) Trends in New Zealand Daily Temperature an Rainfall Extremes. International Journal of Climatology, 21, 1437-1452.

[15] Sneyers, R. (1975) Sobre el análisis estadístico de las series de observaciones. OMM, Nota Técnica 143, OMM-No415. 192 p.

[16] Domonkos, P., Kysely, J., Piotrowicz, K., Petrovic, P. and Likso, P. (2003) Varibiliry of Extreme Temperature Events in South-Central Europe during the 20th Century and Its Relationship with Large-Scale Circulation. International Journal of Climatology, 23, 987-1010. http://dx.doi.org/10. 1002/joc.929

[17] Klein, A.M.G. and Konnen, G.P. (2003) Trends in Indices of Daily Temperature and Precipitation Extremes in Europe, 1946-99. Journal Climate, 16, 3665-3680. http://dx.doi.org/10.1175/1520-0442(2003)016<3665:TIIODT>2.0.CO;2

[18] Labajo, A.L. and Labajo, J.L. (2010) Evolución de la frecuencia anual de los días extremadamente fríos, en época fría, entre 1961 y 2003, en la Meseta Central espanola. Publicaciones de la Asociación Espanola de Climatología (AEC), Serie A no 7, 151-159.

[19] DeGaetano, A.T. and ALLEN, R.J. (2002) Trends in Twentieth-Century Temperature Extremes across the United States. Journal of Climate, 15, 3188-3205. http://dx.doi.org/10.1175/1520-0442 (2002)015<3188:TITCTE>2.0.CO;2

[20] Labajo, J.L., Labajo, A.L., Martín, Q., Piorno, A., Morales, C. and Ortega, M.T. (2006) Análisis del comportamiento reciente de los valores extremos de temperatura en la zona Madrid-Castilla La Mancha. En: Cuadrat, J.M., Saz, M.A., Vicente, S.M., Lanjeri, S., DE Luis, M. and González, J.C., Eds., Clima, Sociedad y Medio Ambiente, Publicaciones de la AEC, Serie A, no 5, 157-165.

[21] Griffiths, G.M., Ssalinger, M.J. and Leleu, I. (2003) Trends in Extreme Daily Rainfall across the South Pacific and Relationship to the South Pacific Convergence Zone. International Journal of Climatology, 23, 847-869. http://dx.doi.org/10.1002/joc.923

[22] IPCC (2002) Cambio Climático: Ciencia, Impactos, Adaptación y Mitigación: Principales Conclusiones del Tercer Informe de Evaluación. Oficina Espanola de Cambio Climático, Ministerio de Medio Ambiente, Madrid.