Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Physics
Statistical Analysis Of Subsurface Diffusion Of Solar Energy With Implications For Urban Heat Stress, Mark P. Silverman
Statistical Analysis Of Subsurface Diffusion Of Solar Energy With Implications For Urban Heat Stress, Mark P. Silverman
Faculty Scholarship
Analysis of hourly underground temperature measurements at a medium-size (by population) US city as a function of depth and extending over 5+ years revealed a positive trend exceeding the rate of regional and global warming by an order of magnitude. Measurements at depths greater than ~2 m are unaffected by daily fluctuations and sense only seasonal variability. A comparable trend also emerged from the surface temperature record of the largest US city (New York). Power spectral analysis of deep and shallow subsurface temperature records showed respectively two kinds of power-law behavior: 1) a quasi-continuum of power amplitudes indicative of Brownian …