Cloud cover effects on physical soil temperatures with buried targets

Zenon Derzko; Oanh Nguyen; Chung Phan; Richard Lydic; J. Thomas Broach; Timothy Moore

doi:10.1117/12.918468

10 May 2012 Cloud cover effects on physical soil temperatures with buried targets

Zenon Derzko, Oanh Nguyen, Chung Phan, Richard Lydic, J. Thomas Broach, Timothy Moore

Proceedings Volume 8357, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVII; 83570L (2012) https://doi.org/10.1117/12.918468
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Cloud cover affects direct and diffuse solar radiation and IR downwelling, and the values for these 3 components are calculated using measured meterological data and varying the values of cloud cover and cloud type using algorithms from the literature. The effects of these 3 transient forcing function components on surface, subsurface and target interior temperatures are studied in this work. The cloud cover effects are isolated from the varying multi-day diurnal cycles by repeating the meteorological data for 1 day. Cloud cover is a subgrid variable and hence, is often reported as 0 or 100%. This study includes a comparison of the effects of these two cloud cover values on a single geographical location for 6 days, with each day repeating the meterological conditions of day 1. This work involves using predictions from the Countermine Computational Test Bed (CTB), a 3D finite element model that accounts for coupled heat and moisture transfer in soil and targets.

Citation Download Citation

Zenon Derzko, Oanh Nguyen, Chung Phan, Richard Lydic, J. Thomas Broach, and Timothy Moore "Cloud cover effects on physical soil temperatures with buried targets", Proc. SPIE 8357, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVII, 83570L (10 May 2012); https://doi.org/10.1117/12.918468

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