Results 221 to 230 of about 25,918 (255)

A drought index: The standardized precipitation evapotranspiration runoff index

Journal of Hydrology, 2019
Abstract Based on the principles underlying the calculation of the standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI), this study selects precipitation, temperature, relative humidity, sunshine hours, wind speed and runoff data to develop a multi-scalar drought index, the standardized precipitation ...
Long Wang, Hang Yu, Maoling Yang, Rui Yang, Rui Gao, Ying Wang   +5 more
openaire   +1 more source

Standardized Precipitation Index Analyses with Wavelet Techniques at Watershed Basin

2017
Climatic changes play an important role on agricultural production. Their impacts on agricultural sciences are significantly different form one region to another. There are many factors on the impact of climate change in farmlands. SPI (Standardized Precipitation Index) is one of the drought indices.
Funda Dökmen, Zafer Aslan, Ahmet Tokgözlü   +2 more
openaire   +3 more sources

SPATIOTEMPORAL ASSESSMENT OF DROUGHT USING STANDARDIZED PRECIPITATION INDEX (SPI) AND STANDARDIZED PRECIPITATION EVAPOTRANSPIRATION INDEX (SPEI) IN PAKISTAN

Big Data in Water Resources Engineering (BDWRE)
Climate change has been intensifying droughts throughout Pakistan’s essential water source region, the Upper Indus River Basin (UIRB). This study evaluates spatiotemporal drought patterns (1982–2014) using SPI and SPEI at 1- to 12-month scales across 11 stations.
Hassnain Haider, Muhammad Asad Hussain, Ali Hasan Jaffry, Fakher Abbas, Muhammad Burhan Khalid, Anas Farooq, Iqra Zainab, Muhammad Bilal Zahid   +7 more
openaire   +1 more source

Estimating uncertainty associated with the standardized precipitation index

International Journal of Climatology, 2018
ABSTRACTWe investigate methodological uncertainties associated with the standardized precipitation index (SPI) that result from limited record length, trends, and outliers. We use long, homogenous records from 14 Italian stations to investigate how specific features in the precipitation record affect construction of an underlying gamma probability ...
Carbone GJ, Lu J, Brunetti M
openaire   +3 more sources

Spatiotemporal variability assessment and accuracy evaluation of Standardized Precipitation Index and Standardized Precipitation Evapotranspiration Index in Malaysia

Earth Science Informatics, 2022
Yi Xun Tan, Jing Lin Ng, Yuk Feng Huang
openaire   +1 more source

Exploring standardized precipitation evapotranspiration index for drought assessment in Bangladesh

Environmental Monitoring and Assessment, 2017
Drought is a critical issue, and it has a pressing, negative impact on agriculture, ecosystems, livelihoods, food security, and sustainability. The problem has been studied globally, but its regional or even local dimension is sometimes overlooked. Local-level drought assessment is necessary for developing adaptation and mitigation strategies for that ...
Md Giashuddin, Miah, Hasan Muhammad, Abdullah, Changyoon, Jeong   +2 more
openaire   +2 more sources

Revisiting the Rainfall Anomaly Index to serve as a Simplified Standardized Precipitation Index

Journal of Hydrology, 2021
Abstract The Rainfall Anomaly Index (RAI) is revisited herein as an alternative to the Standardized Precipitation Index (SPI), taking into account different time scales and the probability of zero precipitation as in the SPI procedure. To evaluate the performance of the modified RAI that stands as a Simplified Standardized Precipitation Index (SSPI),
openaire   +1 more source

Stochastic forecasting of Standardized Precipitation Index

2005
An improved drought management must rely on an accurate monitoring and forecasting of the phenomenon in order to activate appropriate mitigation measures, based on the risk associated with the possible evolution of a current drought condition. In the paper, a stochastic model to forecast SPI values at short-medium term has been developed.
CANCELLIERE, Antonino, DI MAURO G, BONACCORSO B, ROSSI G.   +3 more
openaire   +2 more sources

Multifractal analysis of standardized precipitation index in Northeast Brazil

Chaos, Solitons & Fractals, 2023
Antonio Samuel Alves da Silva, Tatijana Stosic, Ilija Arsenić, Rômulo Simões Cezar Menezes, Borko Stosic   +4 more
openaire   +1 more source

Precipitation Pattern Estimation with the Standardized Precipitation Index in Projected Future Climate over Bulgaria

2018
The expected reduction of the precipitation over many regions in a non-stationary climate is a major concern for Europe. Climate change has the potential to increase drought risk by subjecting areas with all natural, social and economic consequences. Thus it is of great interest to analyze future drought severity projected from the climate models in ...
Hristo Chervenkov, Valery Spiridonov
openaire   +1 more source