A5037612586- Remote Sensing and LiDAR Applications
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Remote Sensing in Agriculture
- 3D Surveying and Cultural Heritage
- Air Quality Monitoring and Forecasting
- Geology and Paleoclimatology Research
- Atmospheric Ozone and Climate
- Archaeological Research and Protection
- Robotics and Sensor-Based Localization
- Aeolian processes and effects
- Atmospheric aerosols and clouds
- Air Traffic Management and Optimization
- Geophysics and Gravity Measurements
- Calibration and Measurement Techniques
- Geological Studies and Exploration
- Forest Ecology and Biodiversity Studies
- Soil erosion and sediment transport
- Advanced Computational Techniques and Applications
- Marine and coastal ecosystems
- Remote Sensing and Land Use
- Engineering Education and Curriculum Development
- UAV Applications and Optimization
- Geography Education and Pedagogy
- Land Use and Ecosystem Services
Purdue University West Lafayette
2018-2024
State Street (United States)
2022
University of Wisconsin–Eau Claire
2008-2017
Colgate University
2006
Michigan State University
2003-2005
The Lake Michigan Ozone Study 2017 (LMOS 2017) was a collaborative multiagency field study targeting ozone chemistry, meteorology, and air quality observations in the southern area. primary objective of LMOS to provide measurements improve modeling complex meteorological chemical environment region. science questions included spatiotemporal assessment nitrogen oxides (NO x = NO + NO2) volatile organic compounds (VOC) emission sources their influence on episodes; role lake breezes;...
This article introduces the term "bombturbation" for cratering of soil surface and mixing by explosive munitions, usually during warfare or related activities. Depending on exactly where explosion occurs (above, on, below surface), bombturbation excavates a volume from site impact, forming crater spreading much ejecta out as surrounding rim mixed, but sometimes slightly sorted, debris. Because such explosions are nonselective, that is, all material removed is mixed redistributed, often...
Daytime onshore lake breezes are a critical factor controlling ozone abundance at coastal sites around Lake Michigan. Coastal counties along the western shore of Michigan have historically observed high episodes dating to 1970s. We classified episode days based on extent or absence breeze (i.e., "inland", "near-shore" "no" breeze) establish climatology these events. This work demonstrated variable gradients in abundances different types meteorology, with sharpest concentration near-shore...
Abstract Warfare and the physical environment have always shared a close interconnected relationship. Until recently, historical writings mainly focused on environmental factors influencing outcome of battle not effects war environment. While growing body literature has begun to address environment, many aspects direct still require attention. Warfare, powerful agent landscape change, is unique form disturbance in that it often larger magnitude size than other forms anthropogenic...
Unmanned aerial systems (UAS) are increasingly being used in search and rescue (SAR) operations to assist the discovery of missing persons. UAS useful first responders SAR due rapid deployment, high data volume, spatial resolution collection capabilities. Relying on traditional manual interpretation methods find a person imagery sets containing several hundred images is both challenging time consuming. To better small signs persons large datasets, computer assisted have been developed. This...
Photogrammetry is experiencing an era of democratization mostly due to the popularity and availability many commercial off-the-shelf devices, such as drones smartphones. They are used most convenient effective tools for high-resolution image acquisition a wide range applications in science, engineering, management, cultural heritage. However, quality, particularly geometric accuracy, outcomes from consumer sensors still unclear. Furthermore, expected quality under different control schemes...
Abstract This article describes the benefits of combining field-based learning within context a competitive setting in geography curriculum. Findings and data are presented based on experiences gathered from teaching an upper-level university course that combined geographic techniques theory into game capture-the-flag. Students analyzed variety geospatial sources, using ArcMap Geographic Information System software, to prepare series maps for game. reported first-time understanding many...
The Original article has been corrected.
Abstract Acting as efficient earth‐movers, soldiers can be viewed significant geomorphological drivers of landscape change when replaced in the recent debates on Anthropocene Geomorphology. ‘Polemoforms’, generated by military activities, correspond with a set human‐made landforms various sizes and geometries. They are particularly common World War One battlefield Verdun (France) which ranks among largest battles attrition along Western Front. The artillery bombardments building defensive...
Understanding the role of lake breeze in vertical ozone profiles using unmanned aerial systems at a shoreline location. Vertical show gradients with higher areas steep temperature inversion.
A very prominent buried soil crops out in coastal sand dunes along an ~200 km section of the southeastern shore Lake Michigan. This study is first to investigate character this informally described here as Holland Paleosol by focusing on six sites from Indiana Dunes National Lakeshore north Montague, Most region are large (>40 m high) and contain numerous soils that indicate periods reduced supply comcomitant stabilization. these lower part thin Entisols. The here, contrast, relatively...
Abstract Unmanned Aerial Systems (UAS) serve as an excellent remote-sensing platform to fulfill aerial imagery data collection niche previously unattainable in forestry by satellites and manned aircraft. However, for UAS-derived be spatially representative, a precise network of ground control points (GCP) is often required, which can tedious limit the logistical benefits UAS rapid deployment capabilities, especially densely forested areas. Therefore, methods efficient without GCPs are highly...
The proliferation of Unmanned Aircraft Systems (UAS) in the United States National Airspace System (NAS) has resulted an increasing number close encounters between manned aircraft and UAS, which correlates with remote pilots Federal Aviation Administration (FAA) airmen database. This research explores spatial patterns registered using Geographic Information (GIS) analyses that provide notable distribution how they relate to UAS sightings airspace categories. application GIS these aviation...
Abstract Students in a graduate seminar at Michigan State University produced series of detailed vegetation, soils, and landform maps 1.5-square-mile (3.9 km2) study area southwest Lower Michigan. The learning outcomes (maps) skill development objectives (sampling strategies various GIS applications) this field-intensive mapping experience were driven by the assumption that students learn understand relationships among physical landscape variables better them than they would classroom-based...
Abstract This paper aims to characterise the varying magnitudes of landscape disturbance across WWI battlefield Verdun, France. Five study sites were surveyed best reflect degrees under common similar environmental characteristics, e.g. bedrock, soil type and topographic position. Disturbance magnitude was determined by counting measuring dimensional attributes craters in two 0.25 hectare plots at each five sites. Additionally, a survey microtopography performed record changes elevation...
Jack pine (pinus banksiana) forests are unique ecosystems controlled by wildfire. Understanding the traits of revegetation after wildfire is important for sustainable forest management, as these not only provide economic resources, but also home to specialized species, like Kirtland Warbler (Setophaga kirtlandii). Individual tree detection jack saplings fire events can information about an environment’s recovery. Traditional satellite and manned aerial sensors lack flexibility spatial...
Abstract. Ozone is a pollutant formed in the atmosphere by photochemical processes involving nitrogen oxides (NOx) and volatile organic compounds (VOCs) when exposed to sunlight. Tropospheric boundary layer ozone regularly measured at ground stations sampled infrequently through balloon, lidar, crewed aircraft platforms, which have demonstrated characteristic patterns with altitude. Here, better resolve vertical profiles of within atmospheric layer, we developed evaluated an uncrewed system...
This paper introduces a detailed procedure to utilize the high temporal and spatial resolution capabilities of an unmanned aerial system (UAS) document vegetation at regular intervals both before after planned disturbance, key component in natural disturbance-based management (NDBM), which uses treatments such as harvest prescribed burns toward removal fuel loads. We developed protocol applied it timber burn events. Geographic image-based analysis (GEOBIA) was used for classification UAS...
Abstract. The mesoscale meteorology of lake breezes along Lake Michigan impacts local observations high-ozone events. Previous manned aircraft and UAS have demonstrated non-uniform ozone concentrations within above the marine layer over water shoreline environments. During 2021 Wisconsin's Dynamic Influence Shoreline Circulations on Ozone (WiscoDISCO-21) campaign, two platforms, a fixed-wing (University Colorado RAAVEN) multirotor (Purdue University DJI M210), were used simultaneously to...