Results 21 to 30 of about 2,856,160 (294)

COMPARISON AND EVALUATION OF REMOTE SENSING INDICES FOR AGRICULTURAL DROUGHT MONITORING OVER KAZAKHSTAN [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Drought has a significant impact on the Kazakhstan’s agricultural economy, which is the world's largest wheat flour exporting country. Remote sensing provides an efficient tool for monitoring agricultural drought in a wide range.
B. Sun, J. Qian, X. Chen, X. Chen, Q. Zhou, Q. Zhou   +5 more
doaj   +1 more source

Time scale selection and periodicity analysis of grassland drought monitoring index in Inner Mongolia

Global Ecology and Conservation, 2022
Drought monitoring index is the basis for drought monitoring and early warning. SPEI index is characterized by multiple time scales, which time scale SPEI is more applicable to grassland drought monitoring continues to be a hot topic of research. To find
Qian Wang, Xin Liu, Zeyuan Wang, Lin Zhao, Qi-peng Zhang   +4 more
doaj   +1 more source

Benchmarking of drought and climate indices for agricultural drought monitoring in Argentina

Science of The Total Environment, 2021
Site-specific studies are required to identify suitable drought indices (DIs) for assessing and predicting drought-related impacts. This study presents a benchmark of eight DIs and 19 large-scale climate indices (CIs) to monitor agricultural drought in Argentina.
Araneda-Cabrera, Ronnie J., Bermúdez, María, Puertas, Jerónimo   +2 more
openaire   +4 more sources

Development of a composite drought indicator for operational drought monitoring in the MENA region. [PDF]

Sci Rep, 2023
Abstract This paper presents the composite drought indicator (CDI) that Jordanian, Lebanese, Moroccan, and Tunisian government agencies now produce monthly to support operational drought management decision making, and it describes their iterative co-development processes.
Bergaoui K, Fraj MB, Fragaszy S, Ghanim A, Hamadin O, Al-Karablieh E, Al-Bakri J, Fakih M, Fayad A, Comair F, Yessef M, Mansour HB, Belgrissi H, Arsenault K, Peters-Lidard C, Kumar S, Hazra A, Nie W, Hayes M, Svoboda M, McDonnell R.   +20 more
europepmc   +4 more sources

Evaluation and Comparison of Drought in West Azerbaijan Using the SPI, CZI, PNI Iindices and Geographic Information System (GIS) [PDF]

علوم و مهندسی آبیاری, 2019
Recognizing and studying the drought phenomenon with regard to the affecting factors led to better understanding of this phenomenon and paved the way for short-term and long-term planning in relation to encountering, controlling and predicting of this ...
Tohid Aligolinia, Negar Rasouli Majd, AboTaleb Hezar Jaribi   +2 more
doaj   +1 more source

Development of Drought Monitoring System: II. Quantitative Drought Monitoring and Drought Outlook Methodology [PDF]

Journal of Korea Water Resources Association, 2006
In this study, Combined Drought Index which can monitor the drought severity and intensity has been developed using PDSI, SPI and MSWSI. To verify the accuracy and applicability of combined drought index, Drought map of Korea using the combined drought index has compared with past drought event.
openaire   +1 more source

Remote Sensing Drought Monitoring and Assessment in Southwestern China based on Machine Learning

Gaoyuan qixiang, 2022
Due to the complexity of drought and the diversity of influencing factors， the accurate monitoring of drought still faces many problems， especially the increasing frequency and aggravation of drought in Southwestern China， and the formation and disaster ...
Hejia JIA, Xiehui LI, Lei WANG, Yuting XUE, Huiquan LIN   +4 more
doaj   +1 more source

Drought monitoring and assessment in China through the National Drought Monitoring and Warning Comprehensive Platform

In the context of climate warming and increasing extreme events, China is facing a severe and complex drought situation. Regional droughts almost occur every year, threatening China's food security, urban and rural drinking water security, and even ecological security.
Qu, Yanping, Zhang, Xuejun, Wang, Xingwang   +2 more
core   +3 more sources

Drought monitoring in Iran using the perpendicular drought indices

International Journal of Applied Earth Observation and Geoinformation, 2012
Abstract This paper aims at finding, evaluating and refining an appropriate drought estimation method for semi-arid regions, e.g., Iran using remote sensing. Recently developed methods, the Perpendicular Drought Index (PDI) and Modified Perpendicular Drought Index (MPDI), are selected as satellite based drought indices in this study.
Alireza Shahabfar, Abduwasit Ghulam, Josef Eitzinger   +2 more
openaire   +1 more source

A New Drought Index Study that Takes into Account a Multi-timescale and the Effects of Evapotranspiration——Taking Yunnan as an Example

Gaoyuan qixiang, 2022
Based on the response of a multiscale drought index to soil moisture and the drought-affected crop area， this study constructed a new composite-index DI that consists of a short time scale （the last 30 days） relative to the Humidity Index （MI30 ...
Qiang ZHANG, Xukai ZOU, Xianyan CHEN, Lin ZHAO, Tingting LI, Zhonghua QIAN   +5 more
doaj   +1 more source