Xiaohui Qiao

University of Florida | UF · Department of Food and Resource Economics

Global or national scale flood early warning systems (FEWS) can benefit developing countries and ungauged regions that lack observational data, computational infrastructure, and/or the human capacity for streamflow modelling. Existing land surface models (LSM) typically generate forecasts using coarse resolution grid cells which, at least for strea...

Numerical models have become essential tools for simulating and forecasting hydro-meteorological variability, and to help better understand the Earth's water cycle across temporal and spatial scales. Hydrologic outputs from these numerical models are widely available and represent valuable alternatives for supporting water management in regions whe...

As researchers globally work towards a fully digital representation of the earth and its processes – i.e. a true Digital Earth – the need grows for software and systems to link disparate computer simulation models of various parts of the earth in a reliable and highly functional way. Web services have been demonstrated as an effective way to share...

Algal blooms occur when natural algae in lakes, rivers, and coastal zones are stimulated to grow out of control through natural processes or by elevated levels of nutrients in the water. Algal blooms that produce dangerous toxins that are detrimental to the plants, animals, people, and ecosystems in the affected areas are known as harmful algal blo...

Florida has one of the most diverse agricultural economies in the United States, producing several dozen types of fruits and vegetables that are consumed within the state, across the country, and around the world. The COVID-19 pandemic and resulting policy responses occurred during the peak of spring harvest season for many crops in Florida, abrupt...

A natural hazard-related disaster event often causes a series of secondary disasters, forming a disaster chain. Modeling the evolution of disaster chains in multihazard scenarios is crucial for risk governance and urban resilience. However, existing multi-hazard models are limited by complex model design and fixed disaster types, making it impossib...

Hazardous chemicals are indispensable substances for the development of modern industries. However, improper storage, transportation, or handling of hazardous chemicals can cause chain disasters such as leakage and explosion, seriously threatening the safety of people’s lives, society, economy, and natural environment. In this study, we analysed th...

Fire safety in urban areas is gaining more attention along with the rapid development of urbanization and the increasing complexity of urban structures. Many fire spread models have been developed to support emergency decision making. However, most of them only investigate on single scenarios (forest fire or house fire) and usually have difficulty...

A preliminary assessment of the impacts from Hurricane Sally, to various agricultural operations in the region.

The discrete fracture network model is a powerful tool for fractured rock mass fluid flow simulations and supports safety assessments of coal mine hazards such as water inrush. Intersection analysis, which identifies all pairs of intersected fractures (the basic components composing the connectivity of a network), is one of its crucial procedures....

Creation of a geological fracture network model conditioned to in situ geometric measurements is of great importance to geoprofessionals, as fractures dominate pathways for fluid flow, a major concern for many engineering applications. This paper introduces and applies the Stochastic Nelder Mead simplex method to automatically calibrate stochastic...