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Using climate change models to assess the probability of weather extremes events: a local scale study based on the generalized extreme value distribution 53
Fontolan,Mariana; Xavier,Ana Carolina Freitas; Pereira,Heloisa Ramos; Blain,Gabriel Constantino.
ABSTRACT Regional climate models (e.g. Eta) nested to global climate models (e.g. HadGEM2-ES and MIROC5) have been used to assess potential impacts of climate change at regional scales. This study used the generalized extreme value distribution (GEV) to evaluate the ability of two nested models (Eta-HadGEM2-ES and Eta-MIROC5) to assess the probability of daily extremes of air temperature and precipitation in the location of Campinas, state of São Paulo, Brazil. Within a control run (1961-2005), correction factors based on the GEV parameters have been proposed to approach the distributions generated from the models to those built from the weather station of Campinas. Both models were also used to estimate the probability of daily extremes of air temperature...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Local impacts; Eta model; Nested models.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100146
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On the performance of three indices of agreement: an easy-to-use r-code for calculating the Willmott indices 53
Pereira,Heloisa Ramos; Meschiatti,Monica Cristina; Pires,Regina Célia de Matos; Blain,Gabriel Constantino.
ABSTRACT A key step for any modeling study is to compare model-produced estimates with observed/reliable data. The original index of agreement (also known as original Willmott index) has been widely used to measure how well model-produced estimates simulate observed data. However, in its original version such index may lead the user to erroneously select a predicting model. Therefore, this study compared the sensibility of the original index of agreement with its two newer versions (modified and refined) and provided an easy-to-use R-code capable of calculating these three indices. First, the sensibility of the indices was evaluated through Monte Carlo Experiments. These controlled simulations considered different sorts of errors (systematic, random and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Modified index of agreement; Refined index of agreement; Model performance.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200394
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