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rlprof-fex: Raman Lidar Vertical Profiles Feature Detection and Extinction

The Raman Lidar Feature detection and EXtinction (FEX) VAP provides height- and time-resolved estimates of cloud and aerosol optical properties. This include estimates of aerosol backscatter coefficient, extinction, scattering ratio, lidar ratio, and linear depolarization ratio. The VAP also provides feature masks that can be used to identify regions containing ice or liquid clouds. The nominal temporal resolution is 2 min, and the nominal vertical resolution is 30 m. Data coverage for the aerosol optical properties (i.e., backscatter, extinction, scattering ratio, and lidar ratio) generally ranges from roughly 200 m to 4 km above the surface, whereas cloud properties such as the cloud mask and the linear depolarization can be reliably estimated below roughly 18 km. With careful quality control the output from this VAP can be used by scientists for process studies, climatology development, instrument intercomparison studies, and model validation.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


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.

Balmes K and Q FU. 2018. "An Investigation of Optically Very Thin Ice Clouds from Ground-Based ARM Raman Lidars." Atmosphere, 9(11), 10.3390/atmos9110445.


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


Zhang Y and SA Klein. 2013. "Factors Controlling the Vertical Extent of Fair-Weather Shallow Cumulus Clouds over Land: Investigation of Diurnal-Cycle Observations Collected at the ARM Southern Great Plains Site." Journal of the Atmospheric Sciences, 70(4), 10.1175/jas-d-12-0131.1.
Research Highlight

Sivaraman C. 2013. ARM Climate Research Facility Quarterly Value-Added Product Report October 01–December 31, 2012. U.S. Department of Energy. DOE/SC-ARM-13-002.


Sivaraman C. 2012. ARM Climate Research Facility Quarterly Value-Added Product Report Fourth Quarter: July 1–September 30, 2012. U.S. Department of Energy. DOE/SC-ARM-12-022.

Sivaraman C. 2012. ARM Climate Research Facility Quarterly Value-Added Product Report Third Quarter: April 1–June 30, 2012. DOE ARM Climate Research Facility. DOE/SC-ARM-12-016.

Sivaraman C. 2012. ARM Climate Research Facility Quarterly Value-Added Product Report First Quarter: October 01-December 31, 2011. U.S. Department of Energy. DOE/SC-ARM-12-002.

Newsom RK, C Sivaraman, and SA McFarlane. 2012. Raman Lidar Profiles–Temperature (RLPROFTEMP) Value-Added Product. U.S. Department of Energy. DOE/SC-ARM/TR-120.

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