Heat waves analysis over France in present and future climate: Application of a new method on the EURO-CORDEX ensemble

Ouzeau, G.; Soubeyroux, Jean‐Michel; Schneider, M.; Vautard, Robert; Planton, Serge

doi:10.1016/j.cliser.2016.09.002

Cited by 108 publications

(92 citation statements)

References 32 publications

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“…Climate models suggest that human influence is expected to significantly increase the frequency, duration and intensity of heatwaves in Europe (Meehl and Tebaldi 2004, Stott et al 2004, Fischer and Schär 2010, Christensen et al 2013, Christidis et al 2015, Russo et al 2014, Lau and Nath 2014, Lemonsu et al 2014, Schoetter et al 2015, Ouzeau et al 2016. Over Europe, in addition to surface warming, these models also suggest a decrease in soil moisture, which can partly be explained by an increase in evapotranspiration in spring and a decrease in precipitation in summer (Collins et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Future summer mega-heatwave and record-breaking temperatures in a warmer France climate

Bador

Terray

Boé

et al. 2017

Environ. Res. Lett.

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Section: Introductionmentioning

confidence: 99%

Future summer mega-heatwave and record-breaking temperatures in a warmer France climate

Bador

Terray

Boé

et al. 2017

Environ. Res. Lett.

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“…The LCZ typology is now also used for smaller cities: Colombo, Sri Lanka (Perera and Emmanuel, 2016); Szeged, Hungary (Gál et al, 2015); Olomouc, Czech Republic (Lehnert et al, 2015); and Nancy, France (Leconte et al, 2015a(Leconte et al, , 2015b. With climate change, in France (Ouzeau et al, 2016), and more generally in Europe (Schoetter et al, 2015), we expect more frequent, longer, more intense heat waves. In this study, taking into account data availability and the meteorological conditions favorable to UHIs, the focus is on July 2015, marked by two heat waves with many record values, within a three-week period.…”

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confidence: 99%

How relevant are local climate zones and urban climate zones for urban climate research? Dijon (France) as a case study

et al. 2018

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Several typologies of urban surface properties have been proposed, in recent years, for urban heat island studies and climate modeling. Some were specifically developed for cities and urban climate issues, like the Urban Climate Zones, and the more recent Local Climate Zones. The initial objective of this paper is to evaluate the capacity of these two typologies to identify thermal environments in and around cities, and to determine which typology best captures the daily spatio-temporal patterns of surface and urban canopy heat islands. To simulate urban climate with a model, LULC data based on a given typology are required. To avoid circularity, we combined the Corine Land Cover database, with data for the whole of Europe, and the BD TOPO database, for France, to form a new tool, CLC_USGS, which we used as input for the WRF limitedarea model, with a 150-m grid resolution. The capacity of each typology to identify coherent thermal zones was estimated for Dijon, a medium-sized French city, during a three-week heat wave, over a 24-hour period, in conditions favorable to urban heat island development. The comparison was based on hourly air temperatures directly output from the WRF model, those obtained from the purpose-built MUSTARDijon 47-sensor meteorological network, and NDVI values and land surface temperatures estimated from Landsat images for 11 July 2015 at 1030 UTC. Typical diurnal variations and spatial contrasts of surface and air temperatures were identified in both simulations and observations. As both typologies show significant capacity for identifying thermally coherent intra-urban areas, this study suggests that they could both be useful for urban climate applications. The typology that is most generally applicable in worldwide contexts is Local Climate Zones. 1. Introduction Urbanization and urban expansion linked to demographic growth produce diverse mosaics of built and non-built surfaces. This diversity results in very different surface energy budgets and Urban Heat Island (UHI) effects, induced by impermeable, heat-storing

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“…Moreover, since temperature is increasing on a global scale, the interest concerning heat waves is also increasing as they are expected to become more frequent, more intense, and of longer duration [19,20]. Especially with respect to the Mediterranean region, which will probably experience a much larger number of heat waves in the future, particularly during the summer months (e.g., [21][22][23][24][25]), the need to define these extreme events efficiently becomes more and more urgent, due to their severe impacts on several aspects of human lives [26][27][28]. In Greece, which is the center of interest in the present study, heat waves have been analyzed by several researchers using different approaches, methodologies, and metrics either from a statistical or a more bioclimatological point of view (e.g., [24,[29][30][31][32][33]).…”

Section: Introductionmentioning

confidence: 99%

Assessing Heat Waves over Greece Using the Excess Heat Factor (EHF)

Τολίκα

2019

Climate

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Heat waves are considered one of the most noteworthy extreme events all over the world due to their crucial impacts on both society and the environment. For the present article, a relatively new heat wave index, which was primarily introduced for the study of extreme warming conditions over Australia (Excess Heat Factor (EHF, hereafter)), was applied over Greece (eastern Mediterranean) for a 55-year period in order to examine its applicability to a region with different climatic characteristics (compared to Australia) and its ability to define previous exceptional heat waves. The computation of the EHF index for the period 1958–2012 demonstrated that, during the warm period of the year (June, July, August, and September (JJAS)), Greece experiences approximately 20 days per year with positive anomalous conditions (EHF > 0) with positive statistically significant trends for all stations under study. Moreover, an average of 128 spells with a duration of 3 to 10 consecutive days with positive EHF values were found during the examined 55-year period. As the duration of the spell was extended, their frequency lessened. Finally, it was found that the EHF index not only detected, identified, and described efficiently the characteristics of the heat waves, but it also provided additional useful information regarding the impact of these abnormal warming conditions on the human ability to adapt to them.

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Heat waves analysis over France in present and future climate: Application of a new method on the EURO-CORDEX ensemble

Cited by 108 publications

References 32 publications

Future summer mega-heatwave and record-breaking temperatures in a warmer France climate

Future summer mega-heatwave and record-breaking temperatures in a warmer France climate

How relevant are local climate zones and urban climate zones for urban climate research? Dijon (France) as a case study

Assessing Heat Waves over Greece Using the Excess Heat Factor (EHF)

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