Analysis of near‐surface diurnal temperature variations and trends in southern Mexico

Peralta-Hernández, A. R; Balling, Robert C.; Barba‐Martinez, Luis R.

doi:10.1002/joc.1715

Cited by 17 publications

(13 citation statements)

References 28 publications

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“…Observed warming trends are known to have been stronger at night than during the day (e.g., Easterling et al 1997Easterling et al , 2000b resulting in a decreased diurnal temperature range. Stronger nighttime heating trends have been observed at many locations around the globe and, in spite of modeling inconsistencies ) and recent observations that trends in diurnal temperature range may have ceased globally (Trenberth et al 2007) or may be increasing over some regions (e.g., southern Mexico;Peralta-Hernandez et al 2008), warmer nights are among the most widespread expectations from anthropogenic global climate change (e.g., Tebaldi et al 2006). In this regard, the California region has been meeting expectations.…”

Section: Introductionmentioning

confidence: 99%

The Great 2006 Heat Wave over California and Nevada: Signal of an Increasing Trend

2009

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Most of the great California–Nevada heat waves can be classified into primarily daytime or nighttime events depending on whether atmospheric conditions are dry or humid. A rash of nighttime-accentuated events in the last decade was punctuated by an unusually intense case in July 2006, which was the largest heat wave on record (1948–2006). Generally, there is a positive trend in heat wave activity over the entire region that is expressed most strongly and clearly in nighttime rather than daytime temperature extremes. This trend in nighttime heat wave activity has intensified markedly since the 1980s and especially since 2000. The two most recent nighttime heat waves were also strongly expressed in extreme daytime temperatures. Circulations associated with great regional heat waves advect hot air into the region. This air can be dry or moist, depending on whether a moisture source is available, causing heat waves to be expressed preferentially during day or night. A remote moisture source centered within a marine region west of Baja California has been increasing in prominence because of gradual sea surface warming and a related increase in atmospheric humidity. Adding to the very strong synoptic dynamics during the 2006 heat wave were a prolonged stream of moisture from this southwestern source and, despite the heightened humidity, an environment in which afternoon convection was suppressed, keeping cloudiness low and daytime temperatures high. The relative contributions of these factors and possible relations to global warming are discussed.

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Section: Introductionmentioning

confidence: 99%

The Great 2006 Heat Wave over California and Nevada: Signal of an Increasing Trend

2009

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“…The probable effect of this process in adjacent regional extent deserves further research [42]. On the other hand, 43 stations developed increasing TR trends, from these, 26 had larger TMaxAvg slope values, a similar result described by [43] in Spain and for Mexico by [20] [21] [44]. The mechanisms of this process is described by [2] who posed that the conversion of soil cover increase TR due to the decrease of evaporative cooling, consequently increasing TMaxAvg in daytime, when evaporation and maximum temperature occur, a very evident process in semi-arid and seasonal regions.…”

Section: Annual Trendsmentioning

confidence: 83%

“…The mechanisms for these effects have been demonstrated by modeling programs [49]- [51] among many others that have depicted the reduced evapotranspiration as a main cause of warming as a consequence of deforestation in seasonal and arid zones as the one here analyzed. The conversion of natural forest into agricultural fields and its warming effect has been also widely documented by field evidence at different spatial scales [44] [52] [53]. In the North Pacific Watershed, specifically in Sinaloa the transformation of original vegetation into agricultural land has been taking place since the decade of the 20s in the past century, increasing its pace in the mid 50s and early 60s with the construction of river dams and irrigation channels, mainly in the middle and northern regions, where are found 88% of the total irrigated are in the region, decimating essentially the vegetation of the CP [54].…”

Section: Discussionmentioning

confidence: 98%

Temperature Trend Analysis in the North Pacific Watershed in Mexico

Romero-Higareda¹,

Peinado-Guevara²,

Campista-León³

et al. 2014

AJCC

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Through the monthly data of 71 meteorological stations of the North Pacific Watershed in northwest Mexico, the annual trends of nine temperature variables were estimated using the non-parametric Mann-Kendall test and the Q Sen's slope estimator. Annual Q Sen's slopes were analyzed in spatial terms using geographic variables as independent factors and likewise with Moran's I index. Three major physiographic zones were used to perform a regional analysis using pooled data. The monthly trends were also analyzed. Divergent annual trends were found for the nine proposed variables and warming trends were predominant in almost all of them. Latitude is the most relevant factor in the spatial distribution of the Q Sen's slopes. Four temperature variables were found statistically clustered, as depicted by the Moran's I index. The largest regional Q Sen's slopes values were found in the Coastal Plains. In this area a larger increase in minimum temperatures was observed, in contrast with the Sierra Madre regions, where the largest rate of increasing change was found in maximum temperatures. The monthly analysis indicates warming trends in the first six months of the year with a sudden decrease in July and also a noticeable decrease in the slope values in December.

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“…Studies made by Peralta-Hernández et al (2009) in southeastern Mexico, showed significant trend in the increase of the maximum temperatures in the region, as well as in the frequency of warm days. Despite the importance of this issue, there is no information on trends from climate change in indices in the state of Chiapas.…”

Section: Introductionmentioning

confidence: 96%

“…Estudios realizados por Peralta-Hernández et al (2009) en el sureste de México, mostraron tendencia significativa en el incremento de las temperaturas máximas en la región, así como en la frecuencia de días cálidos. A pesar de la importancia de esta temática, no existe información sobre las tendencias de los índices de cambio climático en el estado de Chiapas.…”

Section: Introductionunclassified

Índices de cambio climático en el estado de Chiapas, México, en el periodo 1960-2009*

Orozco

Corral

López

et al. 2017

Remexca

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En las últimas tres décadas los periodos cálidos han sido superiores a los valores promedio. Se determinó la tendencia de los índices climáticos basados en las temperaturas máximas mínimas y precipitación registradas en las estaciones meteorológicas en el estado de Chiapas, México, en el periodo de 1960 a 2009. Se utilizó la serie histórica de datos de 16 estaciones climatológicas distribuidas en el estado de Chiapas. Para la obtención de los índices climáticos, se utilizó el módulo RClimDex. Los resultados mostraron que el número de estaciones con tendencia positiva significativa es mayor que el número de estaciones con tendencia negativa significativa, de las 16 estaciones climáticas analizadas y 8 índices, 42 combinaciones presentaron tendencia positiva significativa, mientras que sólo 18 presentaron tendencia negativa significativa. Se observó que 63% de las estaciones analizadas resultaron positivas significativas para temperatura máxima extrema (TXx), el 50% para rango diurno de temperatura (DTR), el 44% para temperatura máxima más baja (TXn), el 38% para número de días con temperatura mínima menor que 20°C (TR20), 31% para temperatura mínima más alta (TNx), 25% para temperatura mínima extrema (TNn) y sólo el 6% para número de días con temperatura máxima mayor que 25 °C (SU25) y número de días consecutivos sin lluvia (CDD) respectivamente. En el mapeo de los resultados no se observaron tendencias en alguna zona específica del estado. Todos los índices basados en la temperatura mostraron patrones de comportamiento similar y consistente con tendencia general al calentamiento: Estos hallazgos son consistentes con estudios previos en la región y en otras partes del mundo.

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Analysis of near‐surface diurnal temperature variations and trends in southern Mexico

Cited by 17 publications

References 28 publications

The Great 2006 Heat Wave over California and Nevada: Signal of an Increasing Trend

The Great 2006 Heat Wave over California and Nevada: Signal of an Increasing Trend

Temperature Trend Analysis in the North Pacific Watershed in Mexico

Índices de cambio climático en el estado de Chiapas, México, en el periodo 1960-2009*

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