Meteorological drought in the Hadley Centre global climate model is assessed using the Palmer Drought Severity Index (PDSI), a commonly used drought index. At interannual time scales, for the majority of the land surface, the model captures the observed relationship between the El Niño–Southern Oscillation and regions of relative wetness and dryness represented by high and low values of the PDS...

Drought is a period of abnormally dry weather with a serious shortage of water supply. Drought indices can be an advantageous indicator to assess drought for taking further response actions. However, drought indices based on ground meteorological measurements could not completely reveal the land use effects over a regional scale. On the other hand, the satellite-derived products provide consist...

The presented paper compares forecast of drought indices based on two different models of artificial neural networks. The first model is based on feedforward multilayer perceptron, sANN, and the second one is the integrated neural network model, hANN. The analyzed drought indices are the standardized precipitation index (SPI) and the standardized precipitation evaporation index (SPEI) and were ...

Drought severity is increasing in Southern Africa which affecting rain-fed agriculture, the main source of livelihood most countries this region. The study assessed seasonal spatio-temporal dynamics agro-meteorological drought between 2017 and 2020 Mberengwa Zvishavane districts. An empirical research design supported by quantitative geographical information system techniques for data analysis ...

There are great advantages in using multi-temporal, multi-spectral and hyperspectral remote sensing data for dynamically and macroscopically monitoring widespread land surface. Exercising this advantage, dynamically adaptive regional drought monitoring system is established, combined with meteorological and hydrological information based upon actual ground measurements for different regions and...

Global warming has resulted in increasingly frequent and severe drought and/or precipitation events. Severe drought limits crop water availability and impacts agricultural productivity and socioeconomic development. To quantify drought-induced yield loss during the main crop stages in Liaoning province, China, aspects of drought episodes (magnitude, duration, and frequency) were investigated du...