Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

rlprof > Raman LIDAR Vertical ProfilesVAP Type(s) > Baseline • Evaluation • Guest

Aerosol scattering ratio (left) and aerosol extinction (right).

The Raman lidar automatically attempts to reoptimize the position of the laser beam in the detector’s field of view every few hours (this is required for most narrow-field-of-view lidar systems). However, this can introduce alignment artifacts in the narrow-field-of-view data due to the way the detection channels are arranged on the optical bench. A suite of VAPs have been developed to reduce or remove any artifacts introduced in the narrow-field-of-view data by these automatic self-alignment “tweaks.” For more details, see each VAP process web page of the Raman Lidar Profiles:

  • Aerosol Scattering Ratio,
  • Best Estimate Product,
  • Depolarization Ratio,
  • Aerosol Extinction,
  • Mixing Ratio and Merge.

For more information about the Raman Lidar Profiles Best Estimate VAP (RLPROFBE), see the VAP report. For more information about the Raman Lidar Profiles Merge (RLPROFMERGE) VAP that is used as input to all the Raman Lidar Profiles VAPs, please see this report. For more information about the Raman Lidar Water Vapor Mixing Ratio and Temperature VAPs, see this report.


  • Fixed
  • AMF1
  • AMF2
  • AMF3


rl: Raman Lidar

Active Locations

Facility Name Start Date
Central Facility, Lamont, OK 1998-03-01
Graciosa Island, Azores, Portugal 2015-09-04


Subba T, M Lawler, and A Steiner. 2021. "Estimation of possible primary biological particle emissions and rupture events at the Southern Great Plains ARM site." Journal of Geophysical Research: Atmospheres, 126(16), e2021JD034679, 10.1029/2021JD034679.


Newsom R and C Sivaraman. 2018. Raman Lidar Water Vapor Mixing Ratio and Temperature Value-Added Products. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-218.


Tridon F, A Battaglia, and D Watters. 2017. "Evaporation in action sensed by multiwavelength Doppler radars." Journal of Geophysical Research: Atmospheres, 122(17), 10.1002/2016JD025998.


Lamer K and P Kollias. 2015. "Observations of fair-weather cumuli over land: Dynamical factors controlling cloud size and cover." Geophysical Research Letters, 42(20), 10.1002/2015gl064534.
Research Highlight


Jensen M, S Giangrande, and P Kollias. 2014. The Mid-latitude Continental Convective Clouds (MC3E) Experiment Final Campaign Report. Ed. by Robert Stafford, U.S. DOE, Office of Science, Office of Biological and Environmental Research. DOE/SC-ARM-14-012.

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