PBL tracking
Automatic tracking of the Planetary boundary layer, under different meteorological conditions. ALS series have been validated during an intensive campaign at the French remote sensing site of the Dynamic Meteorology Lab. PBL height is retrieved in a few seconds (final display every 10mn with an accuracy of 15m). This last left picture shows 12 diurnal cycles at Palaiseau, France using an ALS lidar. Purple dots represent data from a standardized LIDAR from the EARLINET network, validated against Meteofrance radiosoundings.
Visibility
ALS450 provides accurate determination of the extinction profile along the measurement axis of the LIDAR (either vertically or at any angle). The extinction is directly linked to the visibility factor that is commonly used for transport authorities and industries (airports, highways, harbors…). Thus, instead of a local value, visibility information can be provided for any spot, miles away from an airport, collected and sent through conventional data format (met telegram, netcdf etc…)
Fog and Rain
EZ LIDAR is able to follow the top of the fog layer, and alarm its creation or dissipation based on the intensity and shape of the Lidar echo. We show here an example of rainy event at night, followed by very low and foggy conditions above Palaiseau, France.
Phase of the clouds
ALS450 enables the discrimination between ice and water droplets within clouds. The two left figures show intensity of extinction against height in a frontal system (Fig. a) and determination of the phase within cloud (Fig. b), deep blue represents water droplets in cloud, or hygroscopic aerosol in the PBL, green and red color indicates ice crystal presence)..jpg)
Cloud coverage
by using temporal evolution of cloud deck values, or by 3D-scanning the troposphere, EZ Lidars offer several possibilities to estimate the cloud.
Multiple cloud & aerosols layering
ALS450 are able to reach simultaneously all cloud and aerosol layers up to 20km, even the highest thin cirrus layers at 18km in the tropical regions.
Wake Vortex detection
A wake vortex is a dangerous turbulence generated behind an aircraft as it passes through the air. It is extremely hazardous, then it is one of the most limiting factors for the take-off and landing frequency in the airports. WLS70 detects instantaneously a wake turbulence optimizing airport traffic with a consequent increase of passengers safety.