Instrument : Micropulse Lidar (MPL)

Instrument Categories
Cloud Properties

Picture of the Micropulse Lidar (MPL)

General Overview

The Micropulse Lidar (MPL) is a ground-based optical remote sensing system designed primarily to determine the altitude of clouds overhead. The physical principle is the same as for radar. Pulses of energy are transmitted into the atmosphere; the energy scattered back to the transceiver is collected and measured as a time-resolved signal.

From the time delay between each outgoing transmitted pulse and the backscattered signal, the distance to the scatterer is inferred. Besides real-time detection of clouds, post-processing of the lidar return can also characterize the extent and properties of aerosol or other particle-laden regions.

Output Value-Added Products

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

  • 30smplcmask1zwang : MPL: 30-second cloud mask using the first Z. Wang, et al algorithm
  • arscl1cloth : ARSCL: multiple outputs from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR
  • arsclbnd1cloth : ARSCL: cloud boundaries from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR
  • arsclcbh1cloth : ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR
  • mplcbh1scott : MPL: cloud base heights using the Scott/Spinhirne algorithm
  • mplcmask1cloth : MPL: cloud mask using the first Clothiaux, et al algorithm
  • mplnor1camp : MPL: backscatter profiles normalized and cloud detection routine applied.
  • mplpolavg : Micropulse Lidar polarized (MPLPOL) data averaged to fixed 30 second interval
  • mplsmask1cloth : MPL: "significance" mask using the first Clothiaux, et al algorithm
  • rhbarscl1cloth : ARSCL: multiple outputs from first Clothiaux algorithms, Ron Brown ship, Nauru

Output Datastreams

  • mpl : Micropulse Lidar (MPL): cloud base and top heights
  • mplpol : Micropulse Lidar (MPL) polarized: cloud base and top heights
  • mplpolfs : Micropulse Lidar (MPL) polarized, fast sampling: cloud base and top heights
  • mplps : Micropulse Lidar: polarization of atmosphere

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

Eastern North Atlantic
ENAC1 Browse Data Browse PlotsGraciosa Island, Azores, Portugal
North Slope Alaska
NSAC1 Browse Data Browse PlotsCentral Facility, Barrow AK
Southern Great Plains
SGPC1 Browse Data Browse PlotsCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1 Browse Data Browse PlotsCentral Facility, Manus I., PNG
TWPC2 Browse Data Browse PlotsCentral Facility, Nauru Island
TWPC3 Browse Data Browse PlotsCentral Facility, Darwin, Australia
ARM Mobile Facility
FKBM1 Browse Data Browse PlotsBlack Forest, Germany
GANM1 Browse DataGan Airport, Gan Island, Maldives
GRWM1 Browse Data Browse PlotsGraciosa Island, Azores, Portugal
HFEM1 Browse Data Browse PlotsShouxian, Anhui, China
MAGM1 Browse DataLos Angeles, CA to Honolulu, HI - container ship Horizon Spirit
MAOM1 Browse Data Browse PlotsManacapuru, Amazonas, Brazil; AMF1
NIMM1 Browse Data Browse PlotsNiamey, Niger
OLIM1 Browse Data Browse PlotsOliktok Point, Alaska
PGHM1 Browse DataARIES Observatory, Nainital, Uttarkhand, India
PVCM1 Browse Data Browse PlotsHighland Center, Cape Cod MA; AMF 1
PYEM1 Browse Data Browse PlotsPoint Reyes, CA
SBSS1 Browse DataSteamboat Springs CO, Thunderhead Lodge
TMPM1 Browse Data Browse PlotsU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2

Contact(s)

Richard Coulter
(630) 252-5833
rlcoulter@anl.gov

Brian Ermold
Developer
(509) 375-2277
brian.ermold@pnnl.gov