In the context of climate change, this article tries to answer question whether a correlation exists between precipitation and temperature series at regional scale in Dobrogea, Romania. Six sets time are used for aim, each them containing ten series—precipitation temperatures—recorded same period hydro-meteorological stations. The existence monotonic trend was first assessed individual series. ...

Hydroclimatological records are increasingly examined for evidence of trends and shifts that may assist in prediction of future climate change scenarios. This study investigates the trend and step changes in U.S. streamflow over a 52-year period 1951–2002 using data from 639 unimpaired streamflow stations categorized according to the hydrologic unit codes. This is particularly relevant since th...

Multiple sequence alignments can provide information for comparative analyses of proteins and protein populations. We present some statistical trend-tests that can be used when an aligned data set can be divided into two or more populations based on phenotypic traits such as preference of temperature, pH, salt concentration or pressure. The approach is based on estimation and analysis of the va...

Land condition assessment is a basic prerequisite for finding the degradation of a territory, which might lead to desertification under climatic and human pressures. The temporal change in vegetation productivity is a key indicator of land degradation. In this paper, taking the Otindag Sandy Land as a case, the mean normalized difference vegetation index (NDVI_a), net primary production (NPP) a...

Lakes are the most important freshwater resources for humans. It is stated that together with population growth, unplanned urbanization, excessive water consumption, industrialization, and unconscious irrigation, global climate change causes changes in levels volumes of lakes. Lake E?irdir Turkey, which terms drinking irrigation use, was chosen as study area. level (LWL) volume (LWV) values mea...

a study of changes in groundwater resources of najafabad plain is an important issue asregards water resources management, especially after dry becoming of zayandehroodriver. in the present study trend analysis was conducted on groundwater level of 33piezometeric stations, located in najafabad plain during 1374-1391 while using mann-kendall non-parametric test. the slope of trend line was estim...

Changes in annual maximum flood (AMF), which are usually detected using simple trend tests (e.g., Mann-Kendall test (MKT)), expected to change design-flood estimates. We propose an alternate framework detect significant changes between two periods and evaluate it for synthetically generated AMF from the Log-Pearson Type-3 (LP3) distribution due moments associated with distribution. Synthetic ex...

The aim of the paper is to analyze the characteristics of winter fog in terms of its trend and spatial-temporal variability over Indo-Gangetic plains. The study reveals that during last four and half decades (1971-2015), an alarming increasing trend in fog frequency has been observed during the winter months of December and January over the study area. The frequency of fog has increased by 118....