The link between various pathologies and atmospheric conditions has been a constant topic of study over recent decades in many places across the world; knowing more about it enables us to pre-empt the worsening of certain diseases, thereby optimizing medical resources. This study looked specifically at the connections in winter between respiratory diseases and types of atmospheric weather conditions (Circulation Weather Types, CWT) in Galicia, a region in the north-western corner of the Iberian Peninsula. To do this, the study used hospital admission data associated with these pathologies as well as an automatic classification of weather types. The main result obtained was that weather types giving rise to an increase in admissions due to these diseases are those associated with cold, dry weather, such as those in the east and south-east, or anticyclonic types. A second peak was associated with humid, hotter weather, generally linked to south-west weather types. In the future, this result may help to forecast the increase in respiratory pathologies in the region some days in advance.

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This paper presents the first systematic study of the relationships between atmospheric circulation types (CT) and cloud fraction (CF) over the whole Iberian Peninsula, using satellite data from the MODIS (MOD09GA and MYD09GA) cloud mask for the period 2001–2017. The high level of detail, in combination with a classification for circulation patterns, provides us with relevant information about the spatio‐temporal variability of cloudiness and the main mechanisms affecting the genesis of clouds. The results show that westerly CTs are the most influential, followed by cyclonic types, in cloudiness in the west of the Iberian Peninsula. Westerly flows, however, do not affect the Mediterranean coastline, which is dominated by easterly CTs, suggesting that local factors such as convective processes, orography and proximity to a body of warm water could play a major role in cloudiness processes. The Cantabrian Coast also has a particularly characteristic cloudiness dominated by northerly CTs. In general, the results found in this study are in line with the few studies that exist on cloudiness in the Iberian Peninsula. Furthermore, the results are geographically consistent, showing links to synoptic forcing in terms of atmospheric circulation patterns and the impact of the Iberian Peninsula's complex orography upon this element of the climate system.

La textura rugosa del medio urbano otorga a los espacios en sombra Lri protagonismo sólo comparable, en el medio rural, al de la vegetación arbórea densa; también d e cierta importancia es la presencia de partículas contamiiiantes, que produce un efecto iizz~erizndcro en la capa d e aire en contacto con la superficie; se genera además L m comportainieiito peculiar y diferencial e11 relación coi1 la transrnisióii calórica de los distintos materiales de construcción, la forma y disposición de l a s edificaciones. Por todo ello, el balance energético presenta en la ciudad ciertas peculiaridades (ESCOURROU, 1991) 2: la radinciórz global disminuye, pues el incremeiito de la e~iergín clifiisa no compensa el descenso d e la dircctn, y la eizergía il-f~nrroja desce~zdeiite auinenta por la preseiicia de partículas en el aire, mientras que l a nsccizde~zte es inuy variable en función de la iiaturaleza de la cubierta. De aqcií 1 a importancia d e las modificaciones en el consumo energético por el sustrato urbano: a 1 a rndincióiz lzetn se añade la elze~gín a~ztrópicn, resolviéi~dose ainbas, básicamente, e11 forma de c a l o~ ali~ince71ndo por los edificios (por calefacciones, tráfico, metabolisino humano...), LUI menor peso del cnlor latente por la iinpermeabilización del suelo y ~n incremento del calor serzsible por el calentamiento del aire e n contacto con el suelo.Nuestro aiiálisis se va a apoyar en los valores de radiancia que el s a t é l i t e registra, en relacióii con la einisión d e las diferentes cubiertas, en el infrarrojo tériiiico

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