Timothy J. Brown

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The destructive capacity of wildfires and the dangers and limitations associated with observing actual wildfires has led researchers to develop mathematical models in order to better understand their behavior; unfortunately, current two-dimensional visualiza-tion techniques make discerning driving forces of a fire difficult and restrict comprehension to the(More)
Wildfires are a frequent summertime concern for land managers and communities neighboring wildlands throughout the world. Computational simulations have been developed to help analyze and predict wildfire behavior, but the primary visualization of these simulations has been limited to 2-dimensional graphics images. We are currently working with wildfire(More)
Virtual reconstruction of large landscapes from satellite imagery can be a time-consuming task due to the number of objects that must be extracted. Poor image resolution and noise hinder automatic detection processes and thus must be corrected by the user. This paper describes an application that allows the user to guide the automatic detection of trees(More)
Climate strongly influences global wildfire activity, and recent wildfire surges may signal fire weather-induced pyrogeographic shifts. Here we use three daily global climate data sets and three fire danger indices to develop a simple annual metric of fire weather season length, and map spatio-temporal trends from 1979 to 2013. We show that fire weather(More)
Keywords: Virtual reality Computer-based training Collaborative virtual environment Earth and atmospheric sciences a b s t r a c t The destruction caused by wildfires has led to the development of various models that try to predict the effects of this phenomenon. However, as the computational complexity of these models increases, their utility for real-time(More)
Data from four continuous ozone and weather monitoring sites operated by the National Park Service in Sierra Nevada, California, are used to develop an ozone forecasting model and to estimate the contribution of wildland fires on ambient ozone levels. The analyses of weather and ozone data pointed to the transport of ozone precursors from the Central Valley(More)
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