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Atmosphere 2018, 9(4), 122;

Variability and Factors of Influence of Extreme Wet and Dry Events in Northern Mexico

Instituto Politécnico Nacional, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Sinaloa (CIIDIR-IPN-Sinaloa), Boulevard Juan de Diós Bátiz Paredes # 250, Guasave, Sinaloa, Mexico C.P. 81101, Mexico
Facultad de Ingeniería Mochis, Universidad Autónoma de Sinaloa. Fuente de Poseidón y calle Ángel Flores S/N, Los Mochis, Sinaloa C.P. 81223, Mexico
Centro de Investigaciones Biológicas del Noroeste (CIBNOR-La Paz), Av. Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. México C.P. 23096, Mexico
Instituto Politécnico Nacional, Centro de Investigación e Innovación Tecnológica. Cerrada de Cecati S/N. Col. Santa Catarina Azcapotzalco, Ciudad de México 02250, Mexico
Author to whom correspondence should be addressed.
Received: 15 January 2018 / Revised: 15 March 2018 / Accepted: 16 March 2018 / Published: 23 March 2018
(This article belongs to the Section Climatology and Meteorology)
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The goal of this study was to generate a method to examine seasonal variability by climatic classification and Pacific seasonal factors to identify extreme wet and dry events in northern Mexico for the period 1952–2013. Using the standardized precipitation and evapotranspiration index (SPEI) on scales of three months (SPEI-3) and 24 months (SPEI-24), the variability of extreme wet and dry events were measured. The SPEI-3 and SPEI-24 anomalies were divided by the standard deviation (standardized Z anomalies). A Pearson correlation for SPEI-3, SPEI-24, Pacific decadal oscillation (PDO) and the oceanic El Niño index (ONI) was applied. Wet extreme events were recorded in 1954, 1968, 1976–1977, 1981, 1984, 1986 and 2003, of which the greatest magnitude was recorded in 1984 for the Sinaloa-very dry region. Extreme dry events were recorded in 1952–1953, 1990, 1997, 2003 and 2011–2013. The Z anomalies of the wet extreme events observed coincide with +PDO phase anomalies. In this study, the El Niño southern oscillation (ENSO) has little influence on wet and dry extreme events in northern Mexico. The negative phase anomalies of sea surface temperature (−SST) in the equatorial and eastern Pacific are indicators of extreme wet events. This study shows for the first time the influence of the PDO and the ONI on seasonal variability of extreme wet and dry events by climatic classification through the SPEI index in northern Mexico. View Full-Text
Keywords: SPEI-3; SPEI-24; extreme events SPEI-3; SPEI-24; extreme events

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Llanes-Cárdenas, O.; Gaxiola-Hernández, A.; Estrella-Gastelum, R.D.; Norzagaray-Campos, M.; Troyo-Diéguez, E.; Pérez-González, E.; Ruiz-Guerrero, R.; de J. Pellegrini Cervantes, M. Variability and Factors of Influence of Extreme Wet and Dry Events in Northern Mexico. Atmosphere 2018, 9, 122.

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