A5042819074- Climate change and permafrost
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Arctic and Antarctic ice dynamics
- Hydrocarbon exploration and reservoir analysis
- Winter Sports Injuries and Performance
- Soil and Unsaturated Flow
- Landslides and related hazards
- Hydraulic Fracturing and Reservoir Analysis
- Smart Materials for Construction
- Indigenous Studies and Ecology
- Atmospheric aerosols and clouds
- Meteorological Phenomena and Simulations
- Icing and De-icing Technologies
- Wind and Air Flow Studies
- Hydrology and Sediment Transport Processes
- Vehicle emissions and performance
- Environmental Impact and Sustainability
- Risk and Safety Analysis
- Geological formations and processes
- Hydrology and Watershed Management Studies
- Fire effects on ecosystems
- Geophysical Methods and Applications
Cold Regions Research and Engineering Laboratory
2023-2024
United States Army
2023
United States Army Corps of Engineers
2021
University of Alaska Fairbanks
2010-2017
The magnitude and variability in methane (CH 4 ) emissions from lakes are uncertain due to limitations methods for quantifying the patchiness of ebullition (bubbling). We present a field method estimate an important highly source: northern lakes. defined four classes CH bubble clusters trapped lake ice representing distinct types biogenic seeps that differed flux rate. Mean annual determined through long‐term (up 700 d) continuous measurements 31 three Siberian one Alaskan was (mean ±...
The Magnaprobe, a widely used automated snow depth probe patented in 1999 (US Patent 5,864,059), has revolutionized the collection of data globally. By significantly increasing speed compared to traditional methods, Magnaprobe enables an exponential growth points. However, our study reveals critical limitation: over-probing issues that can lead substantial errors measurements. In comprehensive field validation conducted boreal forest ecosystem interior Alaska, we found overestimated by up...
Abstract. Permafrost regions in subarctic and arctic areas harbor substantial carbon reserves, which are becoming increasingly vulnerable to microbial decomposition as soils warm. As the seasonally thawed active layer deepens anthropogenic disturbances escalate, accurately predicting fluxes from permafrost requires a comprehensive understanding of soil respiration dynamics. This study aimed investigate impact disturbance on rates identify key environmental geochemical factors influencing...
Abstract A three-winter study has been conducted to better understand the relationship between atmospheric conditions and ice fog or diamond dust microphysics. Measurements were east of downtown Fairbanks in interior Alaska during nonprecipitating conditions. Atmospheric measured with several weather stations around region two meteorological temperature profiler instruments (ATTEX MTP-5HE MTP-5PE). Near-surface particle microphysical observations Particle Phase Discriminator mark 2,...
Abstract Machine learning (ML) has rapidly transitioned from a niche activity to mainstream tool for environmental research applications including atmospheric science cloud microphysics studies. Two recently developed particle probes measure the light scattered in near forward direction and save digital images of scattering light. Scattering pattern collected by Particle Phase Discriminator mark 2, Karlsruhe edition (PPD-2K), Small Ice Detector, version 3 (SID-3) provide valuable information...
Alaska's economy is tied to oil production, with most of the petroleum coming from Prudhoe Bay fields through Trans-Alaska Pipeline System. Deadhorse, an industrial town located on North Slope, provides support industry. The Dalton Highway only terrestrial connection between Deadhorse and other cities in Alaska. During winter 2015, road was impassable twice for 12 days total due overflow Sagavanirktok River. spring breakup, unprecedented flooding occurred near caused by ice accumulation fast...
This article presents results from a broad field campaign involving discharge and surface-water slope measurements, water sampling, longitudinal river-bed profile surveys. During the spring breakup of 2011, fieldwork was carried out in several pristine streams located National Petroleum Reserve Alaska; studied cover two main regions: 1) foothills (Ikpikpuk River, Seabee Creek, Prince Otuk Creek); 2) coastal plain (Fish Judy Ublutuoch River). Reported data includes basic geometric hydraulic...
Soil respiration plays a crucial role in the carbon cycle and has significant implications for climate change. Understanding dynamics of soil subarctic arctic is essential to more accurately predict fluxes their potential responses disturbances, as these systems hold an estimated 1,400 Pg (National Snow Ice Data Center). This research focuses on two primary objectives: (1) compare rates between undisturbed disturbed areas located boreal forest ecosystem near town Fairbanks, Alaska, (2)...
As global temperatures rise, soil fractions of organic matter are being subjected to microbial degradation, particularly in high latitude regions.  Concurrently, permafrost perched below active layer soils is thawing at unprecedented rates, significantly altering landscapes and ecosystem trajectories by changing subsurface conditions vegetation characteristics. Our aim was investigate an Alaskan microbiome’s response changes temperature water potential because they well...
Abstract Ice fog typically occurs at temperatures below approximately −30°C. formation and persistence are affected by atmospheric processes different spatial temporal scales can be influenced anthropogenic activities that add vapor to the near-surface atmosphere. Based on meteorological observations from Fairbanks International Airport Eielson Air Force Base (Alaska) 1948/49 2021/22, we provide an overview of general ice climatology sites, changes over time, synoptic-scale upper-level...