A. DiGregorio
Goddard Space Flight Center
8 Papers
17 Citations
A. DiGregorio is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Radiometer & Thermography. The author has an hindex of 4, co-authored 7 publications. Previous affiliations of A. DiGregorio include American University.
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Papers
A portable miniaturized laser heterodyne radiometer (mini‑LHR) for remote measurements of column CH 4 and CO 2 .
Emily L. Wilson,A. DiGregorio,Geronimo L. Villanueva,C. E. Grunberg,Z. Souders,K. M. Miletti,A. R. Menendez,M. H. Grunberg,M. Floyd,J. E. Bleacher,Eugénie S. Euskirchen,C. Edgar,Bryan J. Caldwell,B. Shiro,Kim Binsted +14 more
TL;DR: A portable version of the miniaturized laser heterodyne radiometer (mini-LHR) that simultaneously measures methane (CH4) and carbon dioxide (CO2) in the atmospheric column and can be used to characterize bias between larger, stationary, column observing instruments is presented.
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A 4 U laser heterodyne radiometer for methane (CH4) and carbon dioxide (CO2) measurements from an occultation-viewing CubeSat
Emily L. Wilson,A. DiGregorio,Vincent J. Riot,Mark Ammons,William W Bruner,D. Carter,Jianping Mao,Anand Ramanathan,Susan E. Strahan,Luke D. Oman,Christine Hoffman,Richard M Garner +11 more
TL;DR: In this paper, a 4U (20 cm × 20 cm × 10 cm) occultation-viewing laser heterodyne radiometer (LHR) was designed for measuring methane (CH4), carbon dioxide (CO2) and water vapor (H2O) in the limb that is designed for deployment on a 6U CubeSat.
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Determination of optimal experimental parameters for transient thermography imaging using finite-element models
TL;DR: In this article, the optimal inspection range and time were identified in the contour plots obtained from the appropriate finite-element analysis results, and experiments were performed using a thermographic system to verify and validate the proposed method.
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Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide
Paul I. Palmer,Emily L. Wilson,Geronimo L. Villanueva,Giuliano Liuzzi,Giuliano Liuzzi,Liang Feng,A. DiGregorio,Jianping Mao,Jianping Mao,Lesley Ott,Bryan N. Duncan +10 more
TL;DR: In this article, the authors evaluate the impact of a proposed network of ground-based nano-LHR instruments that measure atmospheric column-averaged carbon dioxide (XCO2 ) with a 1'ppmprecision.
Micro-Cracking Detection in Laminated Composites
Tsuchin Chu,Alma Leyte,A. DiGregorio,Samuel S. Russell,James L. Walker,Robert Thom +5 more
- 01 Jan 2002
TL;DR: In this article, the authors present the experiments to induce fatigue cracking of laminated composites through thermal cycling as well as the feasibility of using Thermography and Ultrasound Spectroscopy technology (UT) to detect and measure such micro-cracking.
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