Instrument: Cloud Physics LiDAR (CPL)
Measures the backscatter coefficient of aerosols and cirrus clouds to derive the depolarization ratio, extinction coefficient, and optical depth (level of transparency) values. These measurements allow CPL to identify the aerosol type, cloud phase, layer types and boundaries (e.g., planetary boundary layer), ice water content, and plume and cloud structure.
SPATIAL RESOLUTION | RECEIVER FIELD-OF-VIEW | TEMPORAL RESOLUTION | ACCURACY | WAVELENGTH | SAMPLING DURATION |
---|---|---|---|---|---|
Horizontal: 200 m at 20 km altitude Vertical: 30 m |
100 microradians |
Raw data: 1/10 s Processed data: 1 s |
Minimum detectable backscatter (at 532 nm) Cirrus (daytime): 1.2 x 10-7 m-1 sr-1 Cirrus (nighttime): 5.0 x 10-8 m-1sr-1 Aerosol (daytime): 3.1 x 10-7 m-1sr-1 Aerosol (nighttime): 6.8 x 10-8 m-1sr-1 |
1064 nm 532 nm 355 nm |
Pulse repetition rate: 5 kHz |