Boundary layer clouds

Lidar Ceilometer CL61

for Meteorology

More than just a ceilometer, the Vaisala CL61 uses first-of-its-kind technology to provide refined profiling data and detect liquid/frozen depolarization, dust, and volcanic ash — in any weather, 24/7.

Redefining cloud measurement

Delivering the most comprehensive insights in the industry, CL61 is a high-performance light detection and ranging (LiDAR) instrument with depolarization measurement capable of unattended operation in all conditions.

In addition to basic ceilometer reporting, the CL61 offers depolarization measurement that enables differentiation between solid, liquid, or mixed-phase clouds and precipitation, providing ready-to-use information for atmospheric characterization.

The CL61 complements already-existing research lidars and can be added on to build hybrid ceilometer networks for more accurate weather modeling and situational awareness.

Industry Applications

LIFT-WEA-CL61-Product-Main-800x450

CL61 General Information

Get to know the first-of-its-kind sensor combining standard ceilometer measurements with advanced depolarization and particle differentiation.

3 keys to navigating sand & dust storms

Understand the threat*

300 mil. people 

affected globally by sand & dust storms (That's approximately 4% of the globe's population)

2000 mil. tons 

of dust emitted annually (That's the equivalent of 307 Great Pyramids of Giza.)

* World Meteorological Organization, Sand and dust storms, 2025

Detect early, act fast

Vaisala Forward scatter sensor FD70
Detects sand/dust vs. water-based particles 
Reduces false alerts with precise visibility data

Vaisala lidar ceilometer CL61
Identifies sand/dust layers through depolarization 
Tracks storm movement for early warnings

Vaisala WindCube® Scan
360°/3D wind and aerosol tracking up to 10 km 
Enables storm trajectory monitoring

Build resilience

Combine sensors for full situational awareness and enable proactive decisions to protect people, assets, and operations.

Sandstorm

Resources

Volcanic ash
Blog

Mitigating the hazards of volcanic ash

Volcanic ash is both easily convected upward within the plume and carried downwind for very long distances. As it falls out of suspension, it can potentially affect communities across hundreds, or even thousands, of square kilometers.
Cumbre Vieja volcano in La Palma, Spain
Blog

Detecting volcanic ash rain in the Canary Islands

The Canary Islands, and especially the island of La Palma, has been experiencing the volcanic eruption of Cumbre Vieja since September 2021. Vaisala’s Lidar Ceilometer CL61 with depolarization capability has been measuring the volcanic ash layers aloft since end of October.
CL61 in the field

Optimize your network and forecasts with refined profiling data

The need for meteorological networks to provide high-quality profiling data is on the rise to improve today’s numerical weather prediction models. Get in touch to learn more about how the CL61 ceilometer can benefit your network and data reporting capabilities. 

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