Academic literature on the topic 'Sécheresse météorologique'
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Journal articles on the topic "Sécheresse météorologique"
Djellouli, F., A. Bouanani, and K. Baba-Hamed. "Caractérisation de la sécheresse et du comportement hydrologique au niveau du bassin versant de l’oued Louza (Algérie occidentale)." Techniques Sciences Méthodes, no. 6 (June 2019): 23–34. http://dx.doi.org/10.1051/tsm/201906023.
Full textBesson, François, Pierre Etchevers, Florence Habets, Patrick Le Moigne, Fabienne Rousset-Regimbeau, Jean-Michel Soubeyroux, Christian Viel, and Béatrice Vincendon. "Suivi en temps réel des sécheresses : de l'analyse à la prévision saisonnière." La Houille Blanche, no. 4 (August 2020): 82–92. http://dx.doi.org/10.1051/lhb/2020042.
Full textYohia, Christophe. "Genèse du mistral par interaction barocline et advection du tourbillon potentiel." Climatologie 13 (2016): 24–37. http://dx.doi.org/10.4267/climatologie.1182.
Full textKastendeuch, Pierre P., Georges Najjar, and Nathalia Philipps. "Îlot de sécheresse et d’humidité à Strasbourg (France)." Climatologie 16 (2019): 72–90. http://dx.doi.org/10.4267/climatologie.1392.
Full textMougin, Bruno, Jérôme Nicolas, Yannick Vigier, Hélène Bessière, and Stéphane Loigerot. "« MétéEAU Nappes » : un site Internet contenant des services utiles à la gestion des étiages." La Houille Blanche, no. 5 (October 2020): 28–36. http://dx.doi.org/10.1051/lhb/2020045.
Full textCHEN, SHIEN-TSUNG, CHUN-CHAO KUO, and PAO-SHAN YU. "Historical trends and variability of meteorological droughts in Taiwan / Tendances historiques et variabilité des sécheresses météorologiques à Taiwan." Hydrological Sciences Journal 54, no. 3 (June 2009): 430–41. http://dx.doi.org/10.1623/hysj.54.3.430.
Full textTremblay, Hugo. "Le droit de l’eau face aux déluges bibliques et aux sécheresses millénaires : la gestion des conflits d’usages causés par la variabilité hydrologique." Les Cahiers de droit 58, no. 3 (September 12, 2017): 383–424. http://dx.doi.org/10.7202/1041007ar.
Full textIdrissou, Yaya, Alassan Assani Seidou, Fréjus Mahougnon Tossou, Hilaire Sorébou Sanni Worogo, Mohamed Nasser Baco, Josias Steve Adjassin, Brice Gérard Comlan Assogba, and Ibrahim Alkoiret Traore. "Perception du changement climatique par les éleveurs de bovins des zones tropicales sèche et subhumide du Bénin : comparaison avec les données météorologiques." Cahiers Agricultures 29 (2020): 1. http://dx.doi.org/10.1051/cagri/2019032.
Full textOyeniyi, F. G., and E. O. Ewuola. "A review of strategies aimed at adapting livestock to volatile climatic conditions in Nigeria." Nigerian Journal of Animal Production 48, no. 4 (March 8, 2021): 79–93. http://dx.doi.org/10.51791/njap.v48i4.3018.
Full textAhossin, Rodrigue, Gervais Atchadé, Guy Wokou, and Ibouraïma Yabi. "Variabilité pluviométrique et cultures maraichères dans la commune de Zogbodomey au Sud-Bénin." Revue Africaine d’Environnement et d’Agriculture 6, no. 3 (October 21, 2023): 77–95. http://dx.doi.org/10.4314/rafea.v6i3.8.
Full textDissertations / Theses on the topic "Sécheresse météorologique"
Luna, Donald A. "Évaluation de la réponse des prairies à la sécheresse grâce à des séries chronologiques d'images satellites." Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2023. http://www.theses.fr/2023UCFA0054.
Full textDrought events are becoming more frequent and severe with climate change, threatening the sustainability of ecosystem services provided by many agroecosystems, including managed grasslands in many regions of the world. The anticipation and mitigation of drought impacts have motivated scientific researches in agronomy, ecophysiology, and ecology. To better understand the processes associated with grassland responses to drought, many studies have conducted controlled pot, mesocosm, or field experiments. Despite their crucial role in building our current knowledge, these approaches face critical limitations such as their restricted spatio-temporal coverage and their disconnection from real-life conditions. The development of remote sensing (RS) products and techniques opens promising avenues for monitoring terrestrial ecosystems and their response to various sources of disturbances. As a complement to more traditional drought experiments and field observations, this PhD thesis aimed at taking advantage of long-term satellite RS data, together with climate and field data, to assess the variability and drivers of grassland response to drought in agricultural systems in the Massic central. To do so, this thesis first reviewed the current methodological approaches for the assessment of grassland response to drought using RS. It addresseses the central objective of determining the variability and drivers of grassland sensitivity to drought at the regional scale. Finally, it sought to comprehensively analyze the impact of drought, amidst the confounding factors, by assimilation of RS data with a simple model of grassland growth. The review of RS-based analyses of drought impacts on grasslands revealed the existence of five alternative methodological approaches. By far, the most common one called here as the “statistical inference” approach consists of inferring the impact of drought from the statistical relationship between vegetation reflectance and meteorological drought indices using long time series datasets. This bibliographic analysis also showed that most of the researches were conducted in the Great Plains (North America) and Mongolian Plateau (Central Asia) leaving many biogeographic gaps, particularly in the temperate regions of Western Europe. The second part of this thesis emphasized the strong variability of the response of temperate managed grasslands across a heterogeneous mountainous region (the Massif central, France). Most importantly, such variability could be explained by a set of pedoclimatic factors, vegetation diversity, and management practices. As expected, some soil and topographic factors, like the soil water holding capacity, were identified as key mitigating factors of drought impacts. In addition, our results showed lower sensitivity of grasslands predominantly mown rather than grazed and with early herbage uptake. For long and infrequent drought events, vegetation diversity had significant mitigating effects, but our findings suggest complex cascading effects between management practices and plant community structure that still need to be addressed. (...)
Beaudin, Isabelle. "Potentiel de la télédétection pour le suivi et la caractérisation des conditions de sécheresse en milieu méditerranéen." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24216/24216.pdf.
Full textCurrent techniques for the detection and monitoring of droughts are based on meteorological networks. The small number of stations, often badly located makes these networks poorly representatives of the area they cover. The aim of this study is to evaluate the potential of satellite imagery for the detection, characterization and monitoring of drought conditions in Andalusia, in southern Spain. The satellite imagery used in this study comes from the NOAA 11 AVHRR sensor. Two indices (VCI and TCI) were calculated over 11 km2 areas centered over 11 meteorological stations. These were compared to the SPI, a widely used meteorological index. Correlation analysis between VCI, TCI and SPI show a good relation during drought periods and seem to support the use of satellite imagery for monitoring drought in the Mediterranean region.
Stéfanon, Marc Alexandre. "Canicules et sécheresses en Méditerranée : contributions des processus couplés surface-atmosphère à méso-échelle." Palaiseau, Ecole polytechnique, 2012. https://pastel.hal.science/docs/00/74/71/24/PDF/TheseStefanon.pdf.
Full textIn a context defined as that of global warming, with fears that one summer out of two could be very similar to the 2003 European heat wave, the significant role played by droughts and land-atmosphere coupling in the enhanced and persistent high temperatures during heat-wave events has been highlighted by various studies. I have developed an original classification based on the spatial structures of the heat waves ocurring in the Euro-Mediterranean area. Classification are generally designed to classify numerous events, so we have had to adapt to classifying rare events, by introducing three criteria grounded on temperature and the spatio-temporal extension of the phenomena to be described. The classification has enabled us to sort out six different categories of heat wave. In course of the investigation, I then proceeded to focus on one of the categories, id est on Westen Europe heat wave. I carried out numerical sensitivity tests in order to analyse how the hydric deficit of soils contributes to amplifying heat waves and was able to bring out different behaviours. In the continental plains, the atmospheric boundary layer temperatures are largely controlled by local dry convection processes. In the mountainous and coastal areas, mesoscale circulations such as slope winds and sea breezes contribute to mitigating heat waves by allowing fresh and moist air to advect and precipitations to form. The effect of vegetation on heat waves was also examined. To do so, I have developed modelling tools which couple atmospheric dynamics with vegetative dynamics and thus present an innovative view on heatwave and drought conditioning processes in Western Europe. This modelling development is part of a larger project that aims at developing a model for regional climatic system and which has been undertaken at the Institut Pierre Simon Laplace (IPSL) as part of the MORCE-MED project. This question has so far been little addressed in the scientific literature. I have shown that the inclusion of an interactive vegetation into modelling enable to simulate the modifications of the phenological cycle that control plant growth and development as well as evapotranspiration. Used to analyse the heat waves of June and August 2003, I have been able to demonstrate that the interaction of vegetation had a mitigating effect on the June 2003 heat wave, while it had a reversed effect in August, id est that of reinforcing. Lastly, we have measured the effects of land cover change that would allow to mitigate the consequences of heat waves on humans. In a preliminary study, I replaced anthropized surfaces (mainly agricultural land) by forests and meadows. There again, the effects noted were more contrasted than expected and presented a mitigation of the heat in June and an increase in the temperatures in August, with a high spatial variability on a mesoscale
Kone, Nicolas. "Contribution à l'étude du fonctionnement des écosystèmes naturels en zone soudano-sahélienne (cas du Burkina Faso). Approche de la dynamique de la sécheresse par télédétection." Toulouse 3, 1992. http://www.theses.fr/1992TOU30067.
Full textLamy, Chloé. "Impact du changement climatique sur la fréquence et l'intensité des sécheresses en Bretagne." Phd thesis, Université Rennes 2, 2013. http://tel.archives-ouvertes.fr/tel-01059818.
Full textRaymond, Florian. "Longs épisodes secs hivernaux dans le bassin méditerranéen et conditions atmosphériques associées : variabilité contemporaine et future (1957-2100)." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCK017/document.
Full textIn the context of climate change, as reflected by a dryer Mediterraneanbasin, this thesis focused on the study of the contemporary and future variability(1957-2100) of the wintertime (September to April) very long dryspells events (called VLDSe) in the Mediterranean basin. An original methodologywas developed in this thesis in order to define VLDSe as singularclimatic events, characterized by location, duration and spatial extent criteria.76 VLDSe were detected in the Mediterranean basin on the contemporaryperiod (1957-2013). These events are divided into 4 main geographicalpatterns: North-East, West, Scattered Localized and South-East. North-East and West configurations are associated with anticyclonic conditionslocated approximately 1 000 km northwestern to the areas affected by theVLDSe, favoring a clear sky and no precipitations. The Scattered Localizedand South-East configurations are special: the first one is characterized asa residual class grouping VLDSe with small spatial extent and distributedthroughout the entire basin, and the second one is characterized by seasonalVLDSe which are the continuation of the dry summer observed in the eastof the Mediterranean basin.Euro-Atlantic weather regimes have some control on the VLDSe. Thepositive phase of the north-atlantic oscillation regime (NAO+) is the onlyone that is clearly favorable to the development of VLDSe on almost the entirebasin. The east-atlantic regime (EA) does not show any control on theVLDSe, and the atlantic ridge (AR) and the negative phase of the northatlanticoscillation (NAO-) regimes are generally detrimental to VLDSe. However,some VLDSe can sometimes be associated with AR, EA and NAOregimes.This requires these three weather regimes to be associated withslightly higher atmospheric pressure northwest of the areas impacted bythe VLDSe, compared to their respective climatology. Long duration of theAR, EA and NAO+ regimes, which are coupled with sustained atmosphericstability, are preferentially associated with VLDSe, in contrast to the shortduration. Conversely, the long duration of the NAO- regime, reinforcingthe low atmospheric pressure on Europe and the Mediterranean basin, areweakly associated with VLDSe.Although the two climate models ALADIN52 and LMDZ4-NEMOMED8 differ in several respects, they agree in that VLDSe should be longer by 2100,especially in the RCP8.5 trajectory. A multi-model analysis with 12 CMIP5simulations shows that wintertime sea-level pressure tends to increase in theAtlantic Ocean, off the French coast and in the central the Mediterraneanbasin for the RCP8.5 trajectory. Conversely, the frequency and duration ofthe 4 weather regimes do not show significant trends until the end of the21st century.Finally, a study is carried out to assess the impact of VLDSe on agriculturalproduction in Spain. The number of VLDSe days has a larger impactson the yields of barley, wheat and oats (winter species and cultivatedthrough rainfed agriculture) than the simple ratio of dry days or seasonalrainfall amounts in Spain. A two-season case study, based on seasons withcomparable rainfall amounts, shows that in addition to yields, a VLDSecauses a significant decrease in soil moisture and in the Ebro River flow
Stieber, Pascale. "Approche d'une caractérisation simple de la pollution en hydrologie urbaine, à partir du couple temps sec/pluie." Vandoeuvre-les-Nancy, INPL, 1996. http://docnum.univ-lorraine.fr/public/INPL_T_1996_STIEBER_P.pdf.
Full textBarbero, Renaud. "Variabilité pluviométrique en Nouvelle-Calédonie et températures de surface océanique dans le Pacifique tropical (1950-2010) : impacts sur les incendies (2000-2010)." Phd thesis, Université de Provence - Aix-Marseille I, 2012. http://tel.archives-ouvertes.fr/tel-00715528.
Full textRoumiguie, Antoine. "Développement et validation d’un indice de production des prairies basé sur l’utilisation de séries temporelles de données satellitaires : application à un produit d’assurance en France." Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0030/document.
Full textAn index-based insurance is provided in response to the increasing number of droughts impacting grasslands. It is based on a forage production index (FPI) retrieved from medium resolution remote sensing images to estimate the impact of hazard in a specific geographical area. The main issue related to the development of such an insurance is to obtain an accurate estimation of losses. This study focuses on two objectives: the FPI validation and the improvement of this index. A validation protocol is defined to limit problems attached to the use of medium resolution products and scaling issues in the comparisons process. FPI is validated with different data: ground measurements production (R² = 0.81; R² = 0.71), high resolution remote sensing images (R² = 0.78 - 0.84) and modelled data (R² = 0.68). This study also points out areas of improvement for the IPF chain. A new index, based on semi-empirical modeling combining remote sensing data with exogenous data referring to climatic conditions and grassland phenology, allows improving production estimation accuracy by 18.6%. Results of this study open several new research perspectives on FPI development and its potential practical application
Manetsa, Viviane. "Etude multi-échelles des précipitations et du couvert végétal au Cameroun : analyses spatiales, tendances temporelles, facteurs climatiques et anthropiques de variabilité du NDVI." Thesis, Dijon, 2011. http://www.theses.fr/2011DIJOS075/document.
Full textDue to its shape and location (2°N-13°N – 8°E-16°E; proximity of the Atlantic Ocean), Cameroon is characterized by a panel of cross-regional climate encountered widely in tropical Africa. Over the region, the decrease rainfall during the second half of the last century has been shown to be associated with stronger recurrence of drier periods, specifically in the core of the rainy season. These conditions have favored the degradation of vegetation cover, driven by socioeconomic and demographic constraints. The substantial impacts on human activities and local society highlight the need to better understand how climate and environmental dynamics do interact locally. The aim of this study is to diagnose multi-scale rainfall variability and its relationship with vegetation cover (natural and/or grown), which is directly or indirectly associated to the land-cover and land-use dynamics at these latitudes. Using observed rainfall data (Climatic Research Unit/punctual), the spatial modes of rainfall variability at annual and intraseasonal scales are defined through Principal Component Analysis (PCA) and Agglomerative Hierarchical Clustering (AHC). These regionalizations lead to the discretisation of 5 climatic zones, distinguished from each other, by both the amount of rainfall and seasonality (unimodal / bimodal). New intraseasonal dry spells statistics (number, length, period of occurrence) are produced as well as dates of onset and end of the vegetative seasons by sub-regions. Using unsupervised classification methods (such as ISODATA) in Normalized Difference Vegetation Index (NDVI) data at a 8km spatial resolution, vegetation cover spatiotemporal distribution and typology were produced. Then, based on a concomitant use of statistical and GIS approaches, higher resolutions of NDVI (SPOT-1Km) and Global Land-cover data (GLC 2000), allowed to further evaluate both the pluviometric and anthropogenic factors (demography, land use) influencing vegetation dynamics. Analysis were carried out in Northern Cameroon (6°N-13°N – 11°E-16°E), which is the most sensitive region with regards to climatic and environmental variability, that could lead to important socio-economic thread locally
Books on the topic "Sécheresse météorologique"
Channel, Discovery, ed. Wicked weather: When everything goes right, it goes so wrong. Des Moines, IA: Meredith Books, 2006.
Find full textRemote sensing of drought: Innovative monitoring approaches. Boca Raton, FL: CRC Press, 2012.
Find full textVerdin, James P., Brian D. Wardlow, and Martha C. Anderson. Remote Sensing of Drought: Innovative Monitoring Approaches. Taylor & Francis Group, 2012.
Find full textWardlow, Brian D. Remote Sensing of Drought: Innovative Monitoring Approaches. Taylor & Francis Group, 2012.
Find full textVerdin, James P., Brian D. Wardlow, and Martha C. Anderson. Remote Sensing of Drought: Innovative Monitoring Approaches. Taylor & Francis Group, 2012.
Find full textVerdin, James P., Brian D. Wardlow, and Martha C. Anderson. Remote Sensing of Drought: Innovative Monitoring Approaches. Taylor & Francis Group, 2017.
Find full textMehta, Vikram M. Natural Decadal Climate Variability: Phenomena, Mechanisms, and Predictability. Taylor & Francis Group, 2020.
Find full textMehta, Vikram M. Natural Decadal Climate Variability. Taylor & Francis Group, 2020.
Find full textMehta, Vikram M. Natural Decadal Climate Variability: Societal Impacts. Taylor & Francis Group, 2017.
Find full textMehta, Vikram M. Natural Decadal Climate Variability: Phenomena, Mechanisms, and Predictability. Taylor & Francis Group, 2020.
Find full textBook chapters on the topic "Sécheresse météorologique"
RAYMOND, Florian, and Albin ULLMANN. "Impact spatial du changement climatique sur les sécheresses hivernales en Méditerranée et ses conséquences sur l’agriculture." In Les impacts spatiaux du changement climatique, 211–26. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9009.ch10.
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