The risk of early and late frost behavior in central México under El Niño conditions

The irregular occurrence of cold temperatures (frost) in central México (~19-23° N) produces high agricultural losses each year; the greatest effect is on cold-sensitive crops, which has important socio-economic implications for the region. There is a lack of information on frost-related studies reg...

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Detalhes bibliográficos
Autores: A. R. PERALTA-HERNÁNDEZ, L. R. BARBA-MARTÍNEZ
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:México
Recursos:Universidad Autónoma de Aguascalientes
Repositorio:Redalyc-UAA
OAI Identifier:oai:redalyc.org:56512093006
Acesso em linha:https://www.redalyc.org/articulo.oa?id=56512093006
Access Level:acceso abierto
Palavra-chave:Ciencias de la Tierra
frost
El Niño
late frost
early frost
free periods
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spelling The risk of early and late frost behavior in central México under El Niño conditionsA. R. PERALTA-HERNÁNDEZL. R. BARBA-MARTÍNEZCiencias de la TierrafrostEl Niñolate frostearly frostfree periodsThe irregular occurrence of cold temperatures (frost) in central México (~19-23° N) produces high agricultural losses each year; the greatest effect is on cold-sensitive crops, which has important socio-economic implications for the region. There is a lack of information on frost-related studies regarding the onset and duration of frosts in central México, especially in response to the El Niño (EN) phenomenon. Due to the land's irregular topography, the weather stations were grouped into 300 m range heights, resulting in five regions: I, III, and IV-VI with elevations from 875 to 2999 masl. Daily minimum temperatures (¿ 2 °C) from 50 weather stations and for each year from 1960 through 1998 were analyzed. The EN effect was evaluated by region comparing the frost-free period (FFP) for EN vs. neutral (N) events. Our results (although not statistically significant) show that the first frost occurs during EN years in the five regions under study; the last frost occurs in the highest regions (IV-VI) during N years. Also, during EN, the FFP is shorter than for N years, except in region VI where it was shorter during N years. The probability of frost occurrence at a 20% level was determined for stations with the shortest FFP. Regression analysis between frost periods and elevation show that frost occurrence is better correlated with elevation than with EN and N events; areas with higher elevation showed shorter FFP compared to areas with lower elevation.Universidad Nacional Autónoma de México2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf0187-6236https://www.redalyc.org/articulo.oa?id=56512093006Atmósfera (México) Num.1 Vol.22reponame:Redalyc-UAAinstname:Universidad Autónoma de Aguascalientesinstacron:UAAenhttp://www.redalyc.org/revista.oa?id=565Atmósferainfo:eu-repo/semantics/openAccessoai:redalyc.org:565120930062024-08-23T16:28:33Z
dc.title.none.fl_str_mv The risk of early and late frost behavior in central México under El Niño conditions
title The risk of early and late frost behavior in central México under El Niño conditions
spellingShingle The risk of early and late frost behavior in central México under El Niño conditions
A. R. PERALTA-HERNÁNDEZ
Ciencias de la Tierra
frost
El Niño
late frost
early frost
free periods
title_short The risk of early and late frost behavior in central México under El Niño conditions
title_full The risk of early and late frost behavior in central México under El Niño conditions
title_fullStr The risk of early and late frost behavior in central México under El Niño conditions
title_full_unstemmed The risk of early and late frost behavior in central México under El Niño conditions
title_sort The risk of early and late frost behavior in central México under El Niño conditions
dc.creator.none.fl_str_mv A. R. PERALTA-HERNÁNDEZ
L. R. BARBA-MARTÍNEZ
author A. R. PERALTA-HERNÁNDEZ
author_facet A. R. PERALTA-HERNÁNDEZ
L. R. BARBA-MARTÍNEZ
author_role author
author2 L. R. BARBA-MARTÍNEZ
author2_role author
dc.subject.none.fl_str_mv Ciencias de la Tierra
frost
El Niño
late frost
early frost
free periods
topic Ciencias de la Tierra
frost
El Niño
late frost
early frost
free periods
description The irregular occurrence of cold temperatures (frost) in central México (~19-23° N) produces high agricultural losses each year; the greatest effect is on cold-sensitive crops, which has important socio-economic implications for the region. There is a lack of information on frost-related studies regarding the onset and duration of frosts in central México, especially in response to the El Niño (EN) phenomenon. Due to the land's irregular topography, the weather stations were grouped into 300 m range heights, resulting in five regions: I, III, and IV-VI with elevations from 875 to 2999 masl. Daily minimum temperatures (¿ 2 °C) from 50 weather stations and for each year from 1960 through 1998 were analyzed. The EN effect was evaluated by region comparing the frost-free period (FFP) for EN vs. neutral (N) events. Our results (although not statistically significant) show that the first frost occurs during EN years in the five regions under study; the last frost occurs in the highest regions (IV-VI) during N years. Also, during EN, the FFP is shorter than for N years, except in region VI where it was shorter during N years. The probability of frost occurrence at a 20% level was determined for stations with the shortest FFP. Regression analysis between frost periods and elevation show that frost occurrence is better correlated with elevation than with EN and N events; areas with higher elevation showed shorter FFP compared to areas with lower elevation.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0187-6236
https://www.redalyc.org/articulo.oa?id=56512093006
identifier_str_mv 0187-6236
url https://www.redalyc.org/articulo.oa?id=56512093006
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=565
dc.rights.none.fl_str_mv Atmósfera
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atmósfera
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Atmósfera (México) Num.1 Vol.22
reponame:Redalyc-UAA
instname:Universidad Autónoma de Aguascalientes
instacron:UAA
instname_str Universidad Autónoma de Aguascalientes
instacron_str UAA
institution UAA
reponame_str Redalyc-UAA
collection Redalyc-UAA
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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