We propose one parametric and one non-parametric method for detection of monotone trends in nutrient concentrations in brackish waters. Both methods take into account that temporal variation in the quality of such waters can be strongly influenced by mixing of salt and fresh water, thus salinity is used as a classification variable in the trend analysis. With the non-parametric approach, Mann-K...

Extreme temperature of several stations in Malaysia is modelled by fitting the monthly maximum to the Generalized Extreme Value (GEV) distribution. The Mann-Kendall (MK) test suggests a non-stationary model. Two models are considered for stations with trend and the Likelihood Ratio test is used to determine the best-fitting model. Results show that half of the stations favour a model which is l...

O objetivo desse trabalho foi analisar a possibilidade de tendências climáticas utilizando dados precipitação pluviométricos na bacia hidrográfica Capibaribe, do estado Pernambuco. Foi utilizada uma série histórica quarenta e cinco anos (552 meses) entre os 1973 2018, obtida no site da Agência Pernambucana Águas Climas - APAC. A análise baseada em apenas um posto pluviométrico. Os que apresenta...

Hydrological drought is defined by long-term decrease in levels and flows of water bodies. The task of this paper is to analyze and identify statistical trends of low flows in streams in the eastern Slovakia. Methodology for evaluating hydrological drought is based on statistical analysis of observed low stream flows at chosen river stations – annual and seasonal. Mann-Kendall statistical test ...

Rainfall and temperature variability analysis is important for researchers policy formulators in making critical decisions on water availability use communities. The Western Sahel, which comprises Mali considered as one of the vulnerable regions to climate change, also encountered challenges climatic shocks such flood drought. This research therefore sought investigate change effects hydrologic...

Abstract Temperature variability may have direct and indirect impacts on the environments of Accra Kumasi Metropolises in Ghana. This study analysed temperature trends both cities using in-situ measurements from one meteorological station 1986 to 2015. The indices were computed RClimdex package Expert Team Climate Change Detection Monitoring Indices (ETCCDMI). time series was pre-whitened befor...

One of the very important issues discussed in the recent two decades is climate change. Temperature is one of the indicative factors of climate change. The present research aimed at studying temporal variation in temperature over Guwahati, Tezpur, Dibrugarh (Mohanbari) and Silchar stations, Assam, India, during the period 1981–2010. Trends in annual and seasonal temperature series were analyzed...