Instrument : Micropulse Lidar (MPL)

Instrument Categories
Cloud Properties

Picture of the Micropulse Lidar (MPL)
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
ENAC1Browse DataGraciosa Island, Azores, Portugal
North Slope Alaska
NSAC1Browse DataCentral Facility, Barrow AK
Southern Great Plains
SGPC1Browse DataCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1Browse DataCentral Facility, Manus I., PNG
TWPC2Browse DataCentral Facility, Nauru Island
TWPC3Browse DataCentral Facility, Darwin, Australia
ARM Mobile Facility
FKBM1Browse DataBlack Forest, Germany
GANM1Browse DataGan Airport, Gan Island, Maldives
GRWM1Browse DataGraciosa Island, Azores, Portugal
HFEM1Browse DataShouxian, Anhui, China
MAGM1Browse DataLos Angeles, CA to Honolulu, HI - container ship Horizon Spirit
MAOM1Browse DataManacapuru, Amazonas, Brazil; AMF1
NIMM1Browse DataNiamey, Niger
OLIM1Browse DataOliktok Point, Alaska
PGHM1Browse DataARIES Observatory, Nainital, Uttarkhand, India
PVCM1Browse DataHighland Center, Cape Cod MA; AMF 1
PYEM1Browse DataPoint Reyes, CA
SBSS1Browse DataSteamboat Springs CO, Thunderhead Lodge
TMPM1Browse DataU. 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