Atmospheric Radiation Measurement Climate Research Facility US Department of Energy
Capabilities > Instruments > hsrl

hsrl

Browse Data
 

High Spectral Resolution Lidar (hsrl)

Browse Data

High-spectral-resolution lidar (HSRL) systems collect data about clouds and aerosols.

These systems provide vertical profiles of optical depth, backscatter cross-section, depolarization, and backscatter phase function. All HSRL measurements are absolutely calibrated by reference to molecular scattering, which is measured at each point in the lidar profile.

Like the Raman lidar, but unlike simple backscatter lidars such as the micropulse lidar, the HSRL can measure backscatter cross-sections and optical depths without prior assumptions about the scattering properties of the atmosphere. The depolarization observations also allow robust discrimination between ice and water clouds. In addition, rigorous error estimates can be computed for all measurements. A very narrow, angular field of view reduces multiple scattering contributions. The small field of view, coupled with a narrow optical bandwidth, nearly eliminates noise due to scattered sunlight.

ARM operates two HSRL systems, one at the Barrow, North Slope of Alaska (NSA) site and the other in the second ARM Mobile Facility (AMF2), which is deployed at various locations on field campaigns.

Measurements

Particulate extinction cross section per unit volume
Particulate backscatter cross section per unit volume
Circular depolarization ratio for particulate

Location

Hyytiala, Finland; Mobile Facility (BAECC)
  • Latitude: 61.843
  • Longitude: 24.288
  • Publication Date: 2014-02-01
  • Start Date: 2014-02-01
  • End Date: 2014-09-12
  • Last Updated: 2014-09-16

Instrument Mentor

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#hsrl

Brian Ermold
Pacific Northwest National Laboratory
John Goldsmith
Sandia National Laboratories
Edwin Eloranta
University of Wisconsin
Joseph Garcia
University of Wisconsin
Hope Michelsen
Sandia National Laboratories
Ray Bambha
Sandia National Laboratories

DOI / Citation

http://dx.doi.org/10.5439/1025200
Atmospheric Radiation Measurement (ARM) user facility. 2014, updated hourly. High Spectral Resolution Lidar (HSRL). 2014-02-01 to 2014-09-12, ARM Mobile Facility (TMP) U. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2 (M1). Compiled by R. Bambha, E. Eloranta, J. Garcia, H. Michelsen, J. Goldsmith and B. Ermold. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1025200.