Instrument : Raman Lidar (RL)

Instrument Categories
Atmospheric Profiling, Aerosols

Picture of the Raman Lidar (RL)

General Overview

The Raman Lidar (RL) is an active, ground-based laser remote sensing instrument that measures vertical profiles of water-vapor mixing ratio and several cloud- and aerosol-related quantities. Lidar (light detection and ranging) is the optical analog of radar, using pulses of laser radiation to probe the atmosphere. This system is fully computer automated, and will run unattended for many days following a brief (~5-minute) startup period. The self-contained system (requiring only external electrical power) is housed in a climate-controlled 8'x8'x20' standard shipping container.

Output Value-Added Products

This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.

  • 10rlprofasr1ferr : 10-minute Raman Lidar: aerosol scattering ratio and backscattering coefficient profiles, from first Ferrare algorithm
  • 10rlprofbe1news : Raman LIDAR (RL): Best-estimate state of the atmospheric profiles from Raman Lidar
  • 10rlprofbe1turn : Raman LIDAR (RL): Best-estimate state of the atmos. profiles from RL & AERI+GOES retrievals
  • 10rlprofdep1turn : 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm
  • 10rlprofext1ferr : 10-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm
  • 10rlprofmr1turn : Raman LIDAR (RL): water vapor mixing ratio and relative humidity profiles, along with PWV
  • 10rlproftemp1news : Temperature Profiles from Raman Lidar at 10-min averaging interval
  • 10srlprofasr1ferr : 10-second Raman Lidar: aerosol scattering ratio and backscattering coefficient profiles, from first Ferrare algorithm
  • 10srlprofmr1turn : Raman LIDAR (RL): 10-sec water vapor mixing ratio andrelative humidity profiles , along with PWV
  • 1rlprofasr1ferr : 1-minute Raman Lidar: aerosol scattering ratio and backscattering coefficient profiles, from first Ferrare algorithm
  • 1rlprofext1ferr : 1-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm
  • 2rlprofasr1ferr : 2-minute Raman Lidar: aerosol scattering ratio and backscattering coefficient profiles, from first Ferrare algorithm
  • 2rlprofdep1turn : 2-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths
  • 60rlproftemp1news : Temperature Profiles from Raman Lidar at 60-min averaging interval
  • rlprofmerge1turn : Merged analog and photon counting profiles used as input for other RLPROF VAPs

Output Datastreams

  • rl : Raman lidar (RL): raw backscattered profiles at 355, 387, and 408 nm
  • rllog : Raman Lidar: instrument log data (alignment tweaks, etc)

Locations

Eastern North Atlantic
ENAC1 Browse DataGraciosa Island, Azores, Portugal
Southern Great Plains
SGPC1 Browse DataCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC3 Browse DataCentral Facility, Darwin, Australia retired
ARM Mobile Facility
OLIM1 Browse DataOlikiok Point, Alaska; AMF3
 retired = Originating instrument has been retired at this location

Contact(s)

John Goldsmith
Sandia National Laboratories
engineering
(925) 294-2432
jgold@sandia.gov

Rob Newsom
Pacific Northwest National Laboratory
(509) 372-6020
rob.newsom@pnnl.gov