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Drought is a serious natural disaster that has a long duration and a wide range of influence. To decrease the drought-caused losses, drought prediction is the basis of making the corresponding drought prevention and disaster reduction…

Machine Learning · Computer Science 2022-07-08 Weiwei Jiang , Jiayun Luo

This study proposes Auto-Regressive Standardized Precipitation Index (ARSPI) as a novel alternative to the traditional Standardized Precipitation Index (SPI) for measuring drought by relaxing the assumption of independent and identical…

Applications · Statistics 2025-04-28 Soham Ghosh , Sujay Mukhoti , Pritee Sharma

Optical satellite sensors cannot see the Earth's surface through clouds. Despite the periodic revisit cycle, image sequences acquired by Earth observation satellites are therefore irregularly sampled in time. State-of-the-art methods for…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Nando Metzger , Mehmet Ozgur Turkoglu , Stefano D'Aronco , Jan Dirk Wegner , Konrad Schindler

Accurate prediction of crop yield supported by scientific and domain-relevant insights, can help improve agricultural breeding, provide monitoring across diverse climatic conditions and thereby protect against climatic challenges to crop…

Forecasts of monsoon rainfall for India are made at national scale. But there is spatial coherence and heterogeneity that is relevant to forecasting. This paper considers year-to-year rainfall change and annual extremes at sub-national…

Applications · Statistics 2016-10-27 Adway Mitra , Ashwin K. Seshadri

An estimate of the net direction of climate interactions in different geographical regions is made by constructing a directed climate network from a regular latitude-longitude grid of nodes, using a directionality index (DI) based on…

Chaotic Dynamics · Physics 2015-06-23 J. Ignacio Deza , Cristina Masoller , Marcelo Barreiro

Traditional approaches for comparing global climate models and observational data products typically fail to account for the geographic location of the underlying weather station data. For modern high-resolution models, this is an oversight…

Applications · Statistics 2020-06-03 Mark D. Risser , Michael F. Wehner

Large-scale crop type classification is a task at the core of remote sensing efforts with applications of both economic and ecological importance. Current state-of-the-art deep learning methods are based on self-attention and use satellite…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Joachim Nyborg , Charlotte Pelletier , Ira Assent

Detailed investigations of time series features across climates, continents and variable types can progress our understanding and modelling ability of the Earth's hydroclimate and its dynamics. They can also improve our comprehension of the…

Applications · Statistics 2024-08-23 Georgia Papacharalampous , Hristos Tyralis , Yannis Markonis , Petr Maca , Martin Hanel

Accurate in-season crop type classification is crucial for the crop production estimation and monitoring of agricultural parcels. However, the complexity of the plant growth patterns and their spatio-temporal variability present significant…

Computer Vision and Pattern Recognition · Computer Science 2023-11-09 Valentin Barriere , Martin Claverie , Maja Schneider , Guido Lemoine , Raphaël d'Andrimont

Rainfall is an important component of the climate system and its statistical properties are vital for prediction purposes. In this study, we have developed a statistical method for constructing the distribution of annual precipitation. The…

Atmospheric and Oceanic Physics · Physics 2024-05-24 Yosef Ashkenazy , Naftali R. Smith

Yield forecast is essential to agriculture stakeholders and can be obtained with the use of machine learning models and data coming from multiple sources. Most solutions for yield forecast rely on NDVI (Normalized Difference Vegetation…

Computers and Society · Computer Science 2018-10-17 Igor Oliveira , Renato L. F. Cunha , Bruno Silva , Marco A. S. Netto

Downscaling is necessary to generate high-resolution observation data to validate the climate model forecast or monitor rainfall at the micro-regional level operationally. Dynamical and statistical downscaling models are often used to get…

Atmospheric and Oceanic Physics · Physics 2023-02-28 Bipin Kumar , Rajib Chattopadhyay , Manmeet Singh , Niraj Chaudhari , Karthik Kodari , Amit Barve

Crop type maps are critical for tracking agricultural land use and estimating crop production. Remote sensing has proven an efficient and reliable tool for creating these maps in regions with abundant ground labels for model training, yet…

Applications · Statistics 2022-12-20 Stefania Di Tommaso , Sherrie Wang , Vivek Vajipey , Noel Gorelick , Rob Strey , David B. Lobell

This study investigates the impacts of grazing duration and intensity on vegetation population dynamics in semi-arid ecosystems characterized by seasonal succession. A novel piecewise periodic model is proposed, dividing the annual cycle…

Dynamical Systems · Mathematics 2026-05-07 Junhong Gan , Guohong Zhang , Xiaoli Wang

Accurate and timely crop mapping is essential for yield estimation, insurance claims, and conservation efforts. Over the years, many successful machine learning models for crop mapping have been developed that use just the multi-spectral…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Praveen Ravirathinam , Rahul Ghosh , Ankush Khandelwal , Xiaowei Jia , David Mulla , Vipin Kumar

We aim to identify the spatial distribution of vegetation and its growth dynamics with the purpose of obtaining a qualitative assessment of vegetation characteristics tied to its condition, productivity and health, and to land degradation.…

Statistical Mechanics · Physics 2024-09-16 Hediye Yarahmadi , Yves Desille , John Goold , Francesca Pietracaprina

While annual crop rotations play a crucial role for agricultural optimization, they have been largely ignored for automated crop type mapping. In this paper, we take advantage of the increasing quantity of annotated satellite data to…

Computer Vision and Pattern Recognition · Computer Science 2021-11-17 Félix Quinton , Loic Landrieu

The accuracy of mapping agricultural fields across large areas is steadily improving with high-resolution satellite imagery and deep learning (DL) models, even in regions where fields are small and geometrically irregular. However,…

Soil moisture is critical component of crop health and monitoring it can enable further actions for increasing yield or preventing catastrophic die off. As climate change increases the likelihood of extreme weather events and reduces the…

Image and Video Processing · Electrical Eng. & Systems 2020-04-28 Conrad James Foley , Sagar Vaze , Mohamed El Amine Seddiq , Alexey Unagaev , Natalia Efremova