M. I. Fernández-Fernández

University of Extremadura | UNEX · Department of Physics

Heat wave (HW) events are becoming more frequent, and they have important consequences because of the negative effects they can have not only on the human population in health terms but also on biodiversity and agriculture. This motivated a study of the trends in HW events over Extremadura, a region in the southwest of Spain, with much of its area...

This article shows the first monthly series of a temperature index for the region of Zafra, located in the southwest of Spain, during the period 1750–1840 using weekly weather descriptions. Three different index categories are established (−1, 0, and 1). We compare the index series of temperature in Zafra with the early instrumental data available...

In this work, we present the construction of a rainfall index for Zafra (southwestern Spain) during the period 1750-1840 from documentary sources. For this purpose we used the correspondence of the Duke of Feria that contains a quasi-weekly report of the weather in Zafra. In order to check its reliability, the Zafra rainfall index was compared with...

Weather observations in Zafra during the period 1750 to 1840 have been compiled and studied. Zafra was the capital of the Duchy of Feria, located in the southwest of the Iberian Peninsula. The documentary sources used in this work are weekly reports submitted to the Duke (who lived in Madrid) that contain a section describing the weather of the pre...

AIRE Research Group (Atmosphere, clImate and Radiation in Extremadura) consists of fourteen researchers (ten PhD) from the Department of Physics, University of Extremadura (Spain). The AIRE studies are focused on two main lines: climate and solar radiation. The climate line has experience in analyzing time series of climatological variables, with...

This work presents the first high-resolution reconstruction of rainfall in southwestern Spain during the period 1750-1840. The weather descriptions used are weekly reports describing the most relevant events that occurred in the Duchy of Feria. An index was defined to characterise the weekly rainfall. Monthly indices were obtained by summing the co...

There is good evidence for an increase in the global surface level of ozone in the past century. In this work we present an analysis of 18 surface ozone series over the Iberian Peninsula, considering the target values of ozone for the protection of human health and for the protection of vegetation, as well as the information and alert thresholds es...

This paper describes an unusual halo observed on the morning of 19 January 1787 from Caspe, Spain. The most striking characteristic of this phenomenon was a vertical tail of light that appears under one of the false suns.