928 resultados para Fenómeno El Niño
Resumo:
Gozos de la milagrosa imagen de Nuestra Señora del Niño Perdido ..., p. 229-230
Resumo:
Port. orlada
Resumo:
Climate variability and changes in the frequency of extremes events have a direct impact on crop damages and yield. In a former work of Capa et al. (2013) the crop yield variability has been studied using different reanalyses datasets with the aim of extending the time series of potential yield. The reliability of these time series have been checked using observational data. The influence of the sea surface temperature on the crop yield variability has been studied, finding a relation with El Niño phenomenon. The highest correlation between El Niño and yield was during 1960-1980. This study aims to analyse the dynamical mechanism of El Niño impacts on maize yield in Spain during 1960-1980 by comparison with atmospheric circulation patterns.
Resumo:
Ejemp. encuadernado en : Literatura de cordel
Resumo:
El Niño phenomenon is the leading mode of sea surface temperature interannual variability. It can affect weather patterns worldwide and therefore crop production. Crop models are useful tools for impact and predictability applications, allowing to obtain long time series of potential and attainable crop yield, unlike to available time series of observed crop yield for many countries. Using this tool, crop yield variability in a location of Iberia Peninsula (IP) has been previously studied, finding predictability from Pacific El Niño conditions. Nevertheless, the work has not been done for an extended area. The present work carries out an analysis of maize yield variability in IP for the whole twenty century, using a calibrated crop model at five contrasting Spanish locations and reanalyses climate datasets to obtain long time series of potential yield. The study tests the use of reanalysis data for obtaining only climate dependent time series of crop yield for the whole region, and to use these yield to analyze the influences of oceanic and atmospheric patterns. The results show a good reliability of reanalysis data. The spatial distribution of the leading principal component of yield variability shows a similar behaviour over all the studied locations in the IP. The strong linear correlation between El Niño index and yield is remarkable, being this relation non-stationary on time, although the air temperature-yield relationship remains on time, being the highest influences during grain filling period. Regarding atmospheric patterns, the summer Scandinavian pattern has significant influence on yield in IP. The potential usefulness of this study is to apply the relationships found to improving crop forecasting in IP.
Resumo:
El Niño and the related phenomenon Southern Oscillation (ENSO) is the strongest signal in the interannual variation of ocean-atmosphere system. It is mainly a tropical event but its impact is global. ENSO has been drawing great scientific attention in many international research programs. There has been an observational system for the tropical ocean, and scientists have known the climatologies of the upper ocean, developed some theories about the ENSO cycle, and established coupled ocean-atmosphere models to give encouraging predictions of ENSO for a 1-year lead. However, questions remain about the physical mechanisms for the ENSO cycle and its irregularity, ENSO-monsoon interactions, long-term variation of ENSO, and increasing the predictive skill of ENSO and its related climate variations.
Resumo:
Plasma levels of corticosterone are often used as a measure of “stress” in wild animal populations. However, we lack conclusive evidence that different stress levels reflect different survival probabilities between populations. Galápagos marine iguanas offer an ideal test case because island populations are affected differently by recurring El Niño famine events, and population-level survival can be quantified by counting iguanas locally. We surveyed corticosterone levels in six populations during the 1998 El Niño famine and the 1999 La Niña feast period. Iguanas had higher baseline and handling stress-induced corticosterone concentrations during famine than feast conditions. Corticosterone levels differed between islands and predicted survival through an El Niño period. However, among individuals, baseline corticosterone was only elevated when body condition dropped below a critical threshold. Thus, the population-level corticosterone response was variable but nevertheless predicted overall population health. Our results lend support to the use of corticosterone as a rapid quantitative predictor of survival in wild animal populations.
Resumo:
El trabajo final de grado “La construcción del concepto de número en el niño durante la etapa de Educación Infantil” se trata de una investigación sobre el proceso de comprensión del concepto de número natural a lo largo del segundo ciclo de Educación Infantil, basándose en los modelos teóricos de Piaget, Gelman y Gallister, Fuson y Schaeffer. Este trabajo, además de contemplar los distintos modelos teóricos, cuenta con un cuestionario con las pruebas que se pasaron a diferentes niños de 3, 4 y 5 años con el fin de caracterizarlos según la fase de comprensión del concepto de número en la que se encontraban y contrastar los resultados de las pruebas con las ideas de dichos autores. La importancia de analizar dichas pruebas y extraer unos resultados, tiene como objetivo, concluir esta investigación dando a conocer la oportunidad que tenemos como docentes para que, una vez que sabemos la fase en la que se encuentran los niños, tener las herramientas necesarias para guiarlos en su proceso de aprendizaje y mejorar su nivel de comprensión respecto al número natural.
Resumo:
En los últimos años el estudio de las emociones ha alcanzado una gran importancia. No nos relacionamos sólo con personas, objetos y paisajes del mundo real, sino que también lo hacemos con lo que llega de los mundos ficticios. Por este motivo, desde hace unas décadas se ha empezado a estudiar el poder emocional del cine en el espectador. Una de las teorías que tratan la emoción fílmica es la mood-cue approach de Greg Smith. Para demostrar su validez vamos a aplicarla a una película con mucho impacto emocional. La elegida es "El niño con el pijama de rayas" dirigida por Mark Herman y basada en el Best Seller de John Boyne.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Tesis Univ. Central, 1863.
Resumo:
"Representada en el teatro del Príncipe el 3 de marzo de 1855"- port.
