drought is a natural disaster. because a significant impact on the agricultural and economy sector, it affects the lives of local residents. with using of the remote sensing, drought can be studied through its effects on plants and agriculture resulting in more accurate and effective results found for modeling drought. in this study, the efficiency of agricultural drought indicators for estimat...

With the global climate change, drought disasters occur frequently. Drought prediction is an important content for drought disaster management, planning and management of water resource systems of a river basin. In this study, a short-term drought prediction model based on deep belief networks DBNs is proposed to predict the time series of different time-scale standardized precipitation index S...

The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining multiscalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed and involves a climatic wa...

Drought forecasting plays an important role in the planning and management of water resources systems. In this paper, a hybrid wavelet and adaptive neuro-fuzzy inference system (WANFIS) is proposed for drought forecasting. The WANFIS model was developed by combining two methods, namely a discrete wavelet transform and adaptive neuro-fuzzy inference system (ANFIS) model. To assess the effectiven...

Three main sea surface temperature (SST) oscillations in the Atlantic and Pacific oceans have shown to play a key role modulating rainfall variability over northern Mexico. Nevertheless, only few studies explored these teleconnections under climate classification approach. In this study, effects of Decadal Oscillation (PDO), Oceanic El Niño Index (ONI) Multidecadal (AMO), precipitation dry semi...

climate change phenomenon is an important environmental challenge of the world. increasing extension of greenhouse gases and remote relationship phenomena accelerate the speed f climate change. changes in precipitation level, drought occurrence and changes in the level of surface and groundwater resources are the recognized consequences of climate change. in order to study consequences of clima...

Drought observation and analysis have a significant impact on lives properties. This research aims to identify the drought trend with its spatiotemporal distribution in seven climatic zones of Bangladesh. Mann-Kendall test Standardized Precipitation Index (SPI) were used phenomenon visualized by Inverse Distance Weighting Interpolation. The findings demonstrate substantial declining for short-t...

The paper includes the analyzes of a possibility applying index to quantify different climate variables. calculation methodology was presented as well standard features most important weather indices such temperature, precipitation (SPI), decile and quantile indices. In addition mentioned that can be conditionally classified simpler, composite indices, developed on complex basis, Guy Carpenter ...

This study analyses long-term changes in drought indices (Standardised Precipitation Index—SPI, Standardised Precipitation–Evapotranspiration Index—SPEI) at 1 and 3 months scales 182 stations 11 central eastern European countries during 1949–2018. For comparative purposes, the necessary atmospheric evaporative demand (AED) to obtain SPEI was calculated using two methods, Hargreaves-Samani (SPEI...