Instrument : Vaisala Ceilometer (VCEIL)

Instrument Categories
Atmospheric Profiling, Cloud Properties

Picture of the Vaisala Ceilometer (Model CL31)
Picture of the Vaisala Ceilometer (Model CL31)

General Overview

The Vaisala Ceilometer (VCEIL) is a self-contained, ground-based, active, remote-sensing device designed to measure cloud-base height, vertical visibility, and potential backscatter signals by aerosols. It detects up to three cloud layers simultaneously. Model CL31 has a maximum vertical range of 7700 m. The laser ceilometer transmits near-infrared pulses of light and the receiver detects the light scattered back by clouds and precipitation.

Output Datastreams

  • ceilpblht : Boundary-layer height data with VCEIL
  • vceil25k : Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range

Primary Measurements

The following measurements are those considered scientifically relevant.


Eastern North Atlantic
ENAC1Browse DataGraciosa Island, Azores, Portugal
North Slope Alaska
NSAC1Browse DataCentral Facility, Barrow AK
NSAC2Browse DataCentral Facility, Atqasuk AK
Southern Great Plains
SGPB1Browse DataHillsboro, KS (Boundary)
SGPB4Browse DataVici, OK (Boundary)
SGPB5Browse DataMorris, OK (Boundary)
SGPB6Browse DataPurcell, OK
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
SBSM1Browse DataSteamboat Springs CO, Valley Site
TMPM1Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2


Victor Morris
(509) 372-6144

Brian Ermold
(509) 375-2277