Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/2190
Pivotal role of the North African Dipole Intensity (NAFDI) on alternate Saharan dust export over the North Atlantic and the Mediterranean, and relationship with the Saharan Heat Low and mid-latitude Rossby waves [Discussion paper]
Title: Pivotal role of the North African Dipole Intensity (NAFDI) on alternate Saharan dust export over the North Atlantic and the Mediterranean, and relationship with the Saharan Heat Low and mid-latitude Rossby waves [Discussion paper]
Authors: Cuevas Agulló, Emilio ORCID RESEARCHERID SCOPUSID Autor AEMETGómez Peláez, Ángel Jesús ORCID RESEARCHERID SCOPUSID Autor AEMETRodríguez González, Sergio ORCID RESEARCHERID Terradellas, EnricAutor AEMETBasart, Sara ORCID García Cabrera, Rosa Delia ORCID RESEARCHERID García Rodríguez, Omaira Elena ORCID RESEARCHERID Alonso-Pérez, Silvia
Keywords: North African Dipole Intensity; Saharan dust; Saharan heat low; Rossby waves
Issue Date: 2016
Publisher: European Geosciences Union
Citation: Atmospheric Chemistry and Physics Discussions. 2016
Publisher version: https://dx.doi.org/10.5194/acp-2016-287
Abstract: In this study, we revise the index that quantifies the North African Dipole Intensity (NAFDI), and explain its relationship with the Saharan Heat Low (SHL) and mid-latitude Rossby waves. We find outstanding similarities of meteorological patterns associated with the positive NAFDI and the SHL West-phase on the one hand, and with the negative NAFDI and the SHL East-Phase, on the other hand. We introduce the daily NAFDI index and the daily SHL West-East Displacement Index (SHLWEDI). The Pearson correlation coefficient between the daily SHLWEDI 1-day lagged and the daily NAFDI for the period 1980–2013 20 June–17 September is fairly high (r = 0.77). The correlation reduces to 0.69 if the SHLWEDI is not lagged. We observe that the SHL West-phase is significantly more frequent than the SHL East-phase, and that the SHL is more intense during its East-phase.
Sponsorship : Part of this study was performed in the frame of AEROATLAN (grant 2015-66229), funded by the Ministry of Economy and Competitiveness of Spain.
URI: http://hdl.handle.net/20.500.11765/2190
Appears in Collections:Artículos científicos 2015-2018


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