Dr. Joshua P. Herron Profile

Dr. Joshua P. Herron

Research Scientist at US Army Dugway Proving Ground

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Publications (5)

Proceedings Article | 10 May 2019 Paper

Instrumentation and capability status of the Dugway Proving Ground referee Lidar systems

Joshua Herron, Kori Moore, William Brown

Proceedings Volume 11007, 1100709 (2019) https://doi.org/10.1117/12.2524842

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Proceedings Article | 16 May 2018 Presentation + Paper

Remote sensing of chlorine using UV lidar at U.S. Army Dugway Proving Ground

James Pearson, George Lemire, William Brown, R. James Berry, Joshua Herron

Proceedings Volume 10629, 106290S (2018) https://doi.org/10.1117/12.2300263

KEYWORDS: LIDAR, Chlorine, Ultraviolet radiation, Clouds, Absorption, Sensors, Laser induced fluorescence, Aerosols, Remote sensing, Defense and security

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Proceedings Article | 16 May 2018 Presentation + Paper

Development and calibration of an eye-safe elastic backscatter lidar for chemical and biological aerosol tracking

Joshua Herron, Michael Wojcik, George Lemire, William Brown, Kori Moore

Proceedings Volume 10629, 106290U (2018) https://doi.org/10.1117/12.2304684

KEYWORDS: LIDAR, Aerosols, Backscatter, Calibration, Standoff detection

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Proceedings Article | 28 September 2011 Paper

Remote sensing and field test capabilities at U.S. Army Dugway Proving Ground

James Pearson, Joshua Herron, Martin Marshall

Proceedings Volume 8185, 81850L (2011) https://doi.org/10.1117/12.897444

KEYWORDS: LIDAR, Sensors, Calibration, Remote sensing, Clouds, Ultraviolet radiation, Biological detection systems, FT-IR spectroscopy, Toxic industrial chemicals, Standoff detection

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Proceedings Article | 13 February 2001 Paper

Mesospheric temperature observations at the USU/CASS Atmospheric Lidar Observatory (ALO)

Vincent Wickwar, Thomas Wilkerson, Marc Hammond, Joshua Herron

Proceedings Volume 4153, (2001) https://doi.org/10.1117/12.417056

KEYWORDS: LIDAR, Telescopes, Mesosphere, Potassium, Temperature metrology, Observatories, Databases, Climatology, Clouds, Alexandrite lasers

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The Center for Atmospheric and Space Sciences (CASS) at Utah State University (USU) operates the ALO for studying the middle atmosphere from the stratosphere to the lower thermosphere. ALO's mid-latitude location (41.74°N, 1 1 1.81°W, 1466 m) is very unique in that it is in the middle of an extensive set of rugged mountains, the Rocky Mountains, which are a major orographic source of gravity waves that may give rise to a longitudinal variation in the mesospheric structure. Mesospheric observations between approximately 45 and 90 km have been carried out on many clear nights with the ALO Rayleighscatter lidar since late 1993. They have been carried out, mostly, with a frequency-doubled Nd:YAG laser producing 18 W at 532 nm and a 44-cm zenith-pointing telescope. To obtain better and more complete observations in the future, a considerably bigger steerable telescope, an alexandrite ring laser for resonance scatter, and an expanded data-acquisition system are being developed. The observations in the extensive existing database have been reduced to provide absolute temperature profiles, which provide important information for understanding the physics and chemistry of the middle atmosphere and for examining global change. They have been used to make a mesospheric temperature climatology that has been and is being used to examine secular, annual, seasonal, and tidal variations, to compare with other temperature observations and with modeled temperatures, and to study mesospheric inversion layers. Day-to-day changes in the temperature profiles are also being compared to meteorological parameters to see if mesospheric changes can be related to low-altitude sources. Temporal and spatial fluctuations in the density profiles have also been examined to provide more direct information on gravity wave activity. And, on 24 June 1999 UT, the lidar probed the first known noctilucent cloud to penetrate to this low latitude, approximately 10° equatorward of previously reported sightings and detections.

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