Temporal variation of reference evapotranspiration during 1961–2005 in the Taoer River basin of Northeast China

Liang, Lina; Li, Lijuan; Liu, Qiang

doi:10.1016/j.agrformet.2009.11.014

Cited by 142 publications

(88 citation statements)

References 30 publications

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Section: Time Series Analysis Methodsmentioning

confidence: 99%

“…It is a common method used for statistical diagnosis in modern climatic analysis studies (Donohue et al, 2010;Liang et al, 2010;Liu et al, 2010a). In order to explore the periodicity of TRSR meteorological variables, the complex Morlet wavelet method was used owing to its reliability in detecting signal periodicity (Rigozo et al, 2002;Liang et al, 2010Liang et al, , 2011. The Morlet wavelet developed by Torrence and Compo (1998) was used due to its widespread usage (Rigozo et al, 2002;EL-Askary et al, 2004;Liang et al, 2010; for more details see Liang et al, 2011).…”

Section: Time Series Analysis Methodsmentioning

confidence: 99%

“…Climate change is virtually irreversible, a manifestation of multiple factors (da Silva, 2004), such as rising temperatures (Ding et al, 2006;IPCC, 2007) as well as changes in precipitation , reference crop evapotranspiration (Liang et al, 2010), wind speed (McVicar et al, 2008), drought events (Potop et al, 2008), and solar radiation (Wild, 2009) to name a few examples. Observations have unearthed climate change impacts on environments and natural resources.…”

Section: Introductionmentioning

confidence: 99%

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Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Liang

Liu

et al. 2013

Int. J. Climatol.

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Changes observed in nine meteorological variables obtained from the Three Rivers Source Region (TRSR) between 1960 and 2009 were investigated using a fitted linear model, Mann-Kendall test, moving t-test, and Morlet wavelet. Analysis of the regionally scaled annual series from 1960 to 2009 showed that minimum (T min ), maximum (T max ), mean (T mean ) air temperature, precipitation (P ), potential evaporation (E p ), and sunshine hours (SH ) increased while relative humidity (RH ) and wind speed (W ) decreased. Trends were significant at a 99% confidence level for air temperature and at a 95% confidence level for E p and W . With the exception of SH , regional scale changes observed in all variables in the past decade (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)) when compared to climate norms (means of all climatic variables) from 1961 to 1990 were consistent with their corresponding linear trends from 1960 to 2009. T max , T mean , and drought index (DI ) exhibited one climate jump, T min and RH two, and SH , E p , and W three at a significance level of α = 0.05. On a regional scale, the period from 1986 to 1997 experienced a warmer, drier climate due to higher than average air temperatures, lower P , and higher DI compared to means from 1960 to 2009. The majority of meteorological variables of the TRSR experienced significant (α = 0.05) short periodical cycling between 2 and 5 years. In terms of spatial distribution, seven out of 12 meteorological stations underwent warmer and wetter periods from 1960 to 2009, whereas the other five situated in the southeastern section of the TRSR underwent warmer, drier periods.

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Section: Time Series Analysis Methodsmentioning

confidence: 99%

Section: Time Series Analysis Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Liang

Liu

et al. 2013

Int. J. Climatol.

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“…The knowledge about evapotranspiration is essential in activities related to river basin management, refilling of aquifers (LIANG et al, 2010), meteorological and hydrological modeling and, above all, in the dynamics of soil humidity and water management of irrigated agriculture (BEZERRA et al, 2008). The quantification of ET is fundamental to identify time variations about irrigation necessity, improve allocation of water resources and evaluate changes in water balance management (ORTEGA-FARIAS et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Estimation methods of reference evapotranspiration (ETo) for Uberlândia -MG

Lacerda

Turco

2015

Eng. Agríc.

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ABSTRACT:One approach to verify the adequacy of estimation methods of reference evapotranspiration is the comparison with the Penman-Monteith method, recommended by the United Nations of Food and Agriculture Organization -FAO, as the standard method for estimating ET 0 . This study aimed to compare methods for estimating ET 0 , Makkink (MK), Hargreaves (HG) and Solar Radiation (RS), with Penman-Monteith (PM). For this purpose, we used daily data of global solar radiation, air temperature, relative humidity and wind speed for the year 2010, obtained through the automatic meteorological station, with latitude 18° 91' 66" S, longitude 48° 25' 05" W and altitude of 869m, at the National Institute of Meteorology situated in the Campus of Federal University of Uberlandia -MG, Brazil. Analysis of results for the period were carried out in daily basis, using regression analysis and considering the linear model y = ax, where the dependent variable was the method of Penman-Monteith and the independent, the estimation of ET 0 by evaluated methods. Methodology was used to check the influence of standard deviation of daily ET 0 in comparison of methods. The evaluation indicated that methods of Solar Radiation and PenmanMonteith cannot be compared, yet the method of Hargreaves indicates the most efficient adjustment to estimate ETo.

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“…Este componente está estreitamente relacionado à dinâmica da umidade do solo, à recarga dos aquíferos e ao escoamento superficial (Liang et al, 2010).…”

Section: Introductionunclassified

Variação temporal dos elementos climáticos e da ETo em Catalão, Goiás, no período de 1961-2011

Alencar¹,

Mantovani²,

Bufon

et al. 2014

Rev. bras. eng. agríc. ambient.

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Neste trabalho se avaliou a existência de tendência na distribuição temporal dos elementos do clima e da evapotranspiração de referência para a localidade de Catalão, no estado de Goiás. Para o período de 1961 a 2011 um conjunto de dados diários de temperatura máxima e mínima do ar, insolação, velocidade do vento e umidade relativa, para o período de 1961 a 2011 foi utilizado para o cálculo da evapotranspiração pelo método de Penman-Monteith. Buscou-se identificar a presença de tendência para as séries de dados mensais através da aplicação dos testes estatísticos de Mann-Kendall, do estimador da inclinação de Sen e da regressão linear com o teste de Student, para o coeficiente angular da reta. Devido ao aumento das temperaturas máxima e mínima e à redução da umidade relativa, aumentos estatisticamente significativos foram observados na evapotranspiração de referência para os meses de setembro, outubro, dezembro e para a série anual.

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Temporal variation of reference evapotranspiration during 1961–2005 in the Taoer River basin of Northeast China

Cited by 142 publications

References 30 publications

Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Climate change in the Tibetan Plateau Three Rivers Source Region: 1960-2009

Estimation methods of reference evapotranspiration (ETo) for Uberlândia -MG

Variação temporal dos elementos climáticos e da ETo em Catalão, Goiás, no período de 1961-2011

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