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Physical and Environmental Geography Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Physical and Environmental Geography
Snow-Albedo Feedback In Northern Alaska: How Vegetation Influences Snowmelt, Lucas C. Reckhaus
Snow-Albedo Feedback In Northern Alaska: How Vegetation Influences Snowmelt, Lucas C. Reckhaus
Theses and Dissertations
This paper investigates how the snow-albedo feedback mechanism of the arctic is changing in response to rising climate temperatures. Specifically, the interplay of vegetation and snowmelt, and how these two variables can be correlated. This has the potential to refine climate modelling of the spring transition season. Research was conducted at the ecoregion scale in northern Alaska from 2000 to 2020. Each ecoregion is defined by distinct topographic and ecological conditions, allowing for meaningful contrast between the patterns of spring albedo transition across surface conditions and vegetation types. The five most northerly ecoregions of Alaska are chosen as they encompass …
Southwest Pacific Tropical Cyclone Frequency And Intensity Related To Observed And Modeled Geophysical And Aerosol Variables, Rupsa Bhowmick
Southwest Pacific Tropical Cyclone Frequency And Intensity Related To Observed And Modeled Geophysical And Aerosol Variables, Rupsa Bhowmick
LSU Doctoral Dissertations
The dissertation focuses on western region of Southwest Pacific Ocean (SWPO)
basin (135E - 180, and 5S - 35S) tropical cyclone (TC) climatology using observed
and modeled data. The classification-based machine learning approach
identifies the synoptic geophysical and aerosol environment favorable or unfavorable
for TC intensification and intensity change prior to landfall incorporating
observational and satellite data. A multiple poisson regression model with varying
temporal monthly lags was used to build a relationship between the number of
monthly TC days with basin wide average dust aerosol optical depth (AOD), sea
surface temperature (SST), and upper ocean temperature (UOT). This idea …
Lightning Activity In The Continental United States On An Enso Time Scale, 2002-2015, Tyler M. Gingrich
Lightning Activity In The Continental United States On An Enso Time Scale, 2002-2015, Tyler M. Gingrich
Senior Honors Projects, 2020-current
This investigation examined the frequency and spatial pattern of lightning in the continental United States from 2002 to 2015. Before analysis, flashes were grouped based on their El Niño Southern Oscillation (ENSO) phase and Spatial Synoptic Classification (SSC) type for the winter season (December, January, and February). The purpose of this study is to better understand the relationship between planetary teleconnections, synoptic scale air masses, and micro scale phenomena, specifically lightning, in the continental United States. Evidence suggests ENSO cold phase flashes tend to have a lower frequency in number of flashes and flash days, as well as a northward …