Impacto del cambio climático en las tendencias de la evaporación en la presa La Vega, Teuchitlán, Jalisco, México
Climate change impact on water resources is predicted as a potential problem, reducing the amount of water for agriculture, the industry and domestic use as well. A number of studies are underway to better understand this problem. In this research, five decades of meteorological data (1961-2009...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Spanish |
| Published: |
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP)
2014
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| Subjects: | |
| Online Access: | https://dialnet.unirioja.es/servlet/oaiart?codigo=4939659 |
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| Summary: | Climate change impact on water resources is predicted
as a potential problem, reducing the amount of water
for agriculture, the industry and domestic use as well. A
number of studies are underway to better understand this
problem. In this research, five decades of meteorological
data (1961-2009) were analysed to assess the effect of
climate change on evaporation trends in the dam La Vega.
The Mann-Kendall statistic was used to identify the trend
of the meteorological variables; maximum temperature,
minimum temperature, precipitation and evaporation as
well as the potential evaporation of the dam La Vega. The
results showed that during the period 1961-1969, only
the evaporation showed significant upward with a value
of S of 24 and a correlation coefficient of 0.7015. The
period 1970-1979 showed positive and negative trends,
for the maximum temperature the S value corresponded
to 24, with a correlation coefficient of 0.4613, which
represents a significant upward trend. Evaporation in this
period had a negative trend with an S value of -25, with a
correlation coefficient of 0.4877, and a significant trend for
decreasing. In the period of 1980-1989, the precipitation
showed a negative trend with S value of -27 and correlation coefficient of 0.5324 with a significant decreasing trend.
The periods 1990-1999 and 2000-2009, showed similar
trends for maximum temperature and evaporation of the
reservoir. For 1990-1999, the maximum temperature
showed a positive trend with S value of 25, and a
correlation coefficient of 0.5447 and a significant upward
trend. For the same period, the reservoir evaporation also
showed a positive trend with S value of 29, correlation
coefficient of 0.6404 and significant upward trend. In the
period 2000-2009, the maximum temperature presented
an S value of 24 with correlation coefficient of 0.6684 and
significant upward trend. The evaporation of the reservoir
had the same tendency with S value of 25, coefficient of
correlation of 0.5911 and significant upward trend. We
concluded that, the periods between 1961-1989 showed
no significant trends in meteorological variables, on the
contrary, the period 1990-2009 presented clear trends for
the increasing maximum temperature and the evaporation
of the reservoir. However, it is an expected behaviour due
to the evaporation of a body of water depends largely on the
ambient temperature and other environmental variables
and characteristics of a natural water body. However,
according to the results, the increased temperature might
adversely affect evaporation loss in the dam La Vega. |
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