Search results for "EL-NINO"

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Characterization of the interannual and intraseasonal variability of West African vegetation between 1982 and 2002 by means of NOAA AVHRR NDVI data

2007

AbstractThe interannual and intraseasonal variability of West African vegetation over the period 1982–2002 is studied using the normalized difference vegetation index (NDVI) from the Advanced Very High Resolution Radiometer (AVHRR).The novel independent component analysis (ICA) technique is applied to extract the main modes of the interannual variability of the vegetation, among which two modes are worth describing. The first component (IC1) describes NDVI variability over the Sahel from August to October. A strong photosynthetic activity over the Sahel is related to above-normal convection and rainfall within the intertropical convergence zone (ITCZ) in summertime and is partly associated …

Mediterranean climateWet seasonAtmospheric Science010504 meteorology & atmospheric sciencesAdvanced very-high-resolution radiometerATMOSPHERIC DYNAMICS0211 other engineering and technologies02 engineering and technology01 natural sciencesNormalized Difference Vegetation IndexRAINY-SEASONPHENOLOGYEL-NINO[ SDU.ENVI ] Sciences of the Universe [physics]/Continental interfaces environmentPrecipitation[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environmentINDEX021101 geological & geomatics engineering0105 earth and related environmental sciencesAIR-TEMPERATUREINDEPENDENT COMPONENT ANALYSISIntertropical Convergence Zone15. Life on landSea surface temperature13. Climate actionClimatologySEA-SURFACE TEMPERATUREPRECIPITATIONEnvironmental scienceOutgoing longwave radiationSAHEL RAINFALL
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Drought-related cholera outbreaks in Africa and the implications for climate change: a narrative review.

2021

ABSTRACT Africa has historically seen several periods of prolonged and extreme droughts across the continent, causing food insecurity, exacerbating social inequity and frequent mortality. A known consequence of droughts and their associated risk factors are infectious disease outbreaks, which are worsened by malnutrition, poor access to water, sanitation and hygiene and population displacement. Cholera is a potential causative agent of such outbreaks. Africa has the highest global cholera burden, several drought-prone regions and high levels of inequity. Despite this, research on cholera and drought in Africa is lacking. Here, we review available research on drought-related cholera outbreak…

SanitationTRANSMISSIONmedia_common.quotation_subjectVulnerabilityClimate changeReviewdroughtMicrobiologyDisease OutbreaksCholeraTropical MedicineEAST-AFRICAEL-NINOparasitic diseasesmedicineHumansImproved sanitationSocioeconomicsVibrio choleraePublic Environmental & Occupational Healthmedia_commonVULNERABILITYRISKScience & TechnologyfungiPublic Health Environmental and Occupational HealthOutbreakfood and beveragesWaterEPIDEMIC CHOLERAGeneral Medicinemedicine.diseaseCholeraDroughtsMalnutritionFRESH-WATER AVAILABILITYInfectious DiseasesGeographyclimate changeINDIAN-OCEANPROJECTIONSoutbreaksAfricaParasitologyHEALTHPsychological resilienceLife Sciences & Biomedicine
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