A Resonance Lidar for Atmospheric Research

Prof. Titus Yuan, Principal Investigator of the Gold Beam's Project

Part of Center for Atmospheric
& Space Sciences
at USU

Part of Consortium of Resonance and Rayleigh Lidars


Most atmospheric lidar systems send a pulsed laser beam into the sky. The backscattered photons are collected by a telescope, filtered, and then counted...

Last campaign run

  • Friday 8th April
    00.00 - 10.00
  • Thursday 7th April
    00.00 - 24.00
  • Wednesday 6h April
    00.00 - 24.00
  • Tuesday 5th April
    20.30 - 24.00


The Article about our team has been posted on Utah State Today.
Move Over, Green Beam: USU Physics Adds 'Gold Beam' Laser.

Our Projects

Long-term temperature trend in mesopause region temperature

Roble and Dickionson (1989) estimated the effects of hypothetical future increase of greenhouse gas...

Mesopause region climatology of temperature, zonal and meridional wind

Different general circulation models (GCMs) are using various gravity wave parameterizations to simulate GW impacts...

Large wind shear study

Unexpected large horizontal winds and wind shears in the lower thermosphere have been observed by rocket soundings and lidars for decades. From 4 years of the Colorado State University sodium wind and temperature lidar data set...

Concurrent Na lidar and OH imager observations enabled atmospheric instability study

The CSU Na lidar had also been collaborating with the OH imager...

Initiative zonal GW momentum flux measurement

Based on twenty nine nights, including 275 hours measurements of temperature, zonal and meridonal winds, and zonal momentum flux in the mesopause region between September 2006 and April 2007, the seasonal means of the observed zonal momentum flux of wave periods...



Great Research Environment

Work with outstanding scientists

Be part of important projects involving topics from instrumentation to scientific analysis passing by signal processing, modeling or optical design.

Outreach and Networking

Have the chance to participate, expose your work and do networking in conferences like CEDAR or AGU.

Recent publications

  • Jan



Evidence of dispersion and refraction of a spectrally broad gravity wave packet in the mesopause region observed by the Na lidar and Mesospheric Temperature Mapper above Logan, Utah

Gravity wave packets excited by a source of finite duration and size possess a broad frequency and wave number spectrum and thus span a range of temporal and spatial scales. Observing at a single location relatively close to the source, the wave components with higher frequency and larger vertical wavelength dominate at earlier times and at higher altitudes, while the lower frequency components, with shorter vertical wavelength, dominate during the latter part of the propagation...

  • Sep



Impacts of CME Induced Geomagnetic Storms on the Mid-latitude Mesosphere and Lower Thermosphere Observed by a Sodium Lidar and TIMED/GUVI

In this paper, we report our findings on the correlation between the neutral temperature (around the mesopause) and thermospheric column density O/N2 ratio, along with their response to geomagnetic storms above midlatitude of North America. A temperature/wind Doppler Na lidar, operating at Fort Collins, CO (41°N, 105°W), and later at Logan, UT (42°N and 112°W), observed significant temperature increases (temperature anomaly) above 95-km (as much as 55-K at 105-km altitude) during four coronal mass ejection-induced geomagnetic storms (April 2002, November 2004, May 2005, and October 2012)...

  • Aug



A coordinated investigation of the gravity wave breaking and the associated dynamical instability by a Na Lidar and an Advanced Mesosphere Temperature Mapper over Logan, UT (41.7°N, 111.8°W)

The impacts of gravity wave (GW) on the thermal and dynamic characteristics within the Mesosphere and Lower Thermosphere (MLT), especially on the atmospheric instabilities, are still not fully understood. In this paper, we conduct a comprehensive and detailed investigation on one GW breaking event during a collaborative campaign between the USU Na lidar and the Advanced Mesospheric Temperature Mapper (AMTM) on Sep 9th 2012...