BackForwardInstrument:  ALADIN 

Instrument details
Acronym ALADIN
Full name Atmospheric Laser Doppler Instrument
Purpose Wind profile in clear-air.  Also aerosol profile, cloud top height
Short description Single-wavelength (355 nm), side-looking (35° off-nadir). High Spectral Resolution Laser (HSRL) to discriminate aerosol types
Background New development
Scanning Technique No scanning.  Pulse echoes averaged over 50 km FOV.  FOV sampled at 200 km intervals
Resolution Horizontal: 50 km FOV sampled at 200 km intervals.  Vertical: from 250 m in the PBL to 2 km at ~ 20 km
Coverage / Cycle Global coverage in 16 d for cells of 100 km side
Mass 500 kg Power 840 W Data Rate 11 kbps

 

Providing Agency ESA
Instrument Maturity Demonstrated by simulations
Utilization Period: ≥2019-05 to ≥2021
Last update: 2017-03-31
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Active and radio-occultation sensor
  • Lidar (Doppler lidar, backscatter lidar, lidar Dial, lidar altimeter)
Mission objectives
Primary mission objectives
  • Wind (horizontal)
Secondary mission objectives
  • Aerosol Optical Depth
  • Aerosol column burden
  • Aerosol mass mixing ratio
Opportunity objectives
  • Aerosol volcanic ash
Show allShow fewer
Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Aerosol column burden2 - very highCloud sensitive.. Radial, along-view only.Opportunity information from Doppler lidar wind profiler
Aerosol mass mixing ratio2 - very highCloud sensitive.. Radial, along-view only.Opportunity information from Doppler lidar wind profiler
Aerosol Optical Depth2 - very highCloud sensitive.. Radial, along-view only.Opportunity information from Doppler lidar wind profiler
Aerosol volcanic ash2 - very highCloud sensitive.. Radial, along-view only.Opportunity information from Doppler lidar wind profiler
Aerosol volcanic ash (Total column)2 - very highCloud sensitive.. Radial, along-view only.Opportunity information from Doppler lidar wind profiler
Wind (horizontal)1 - primaryCloud sensitive.. Radial, along-view only.Side-looking UV Doppler lidar for aerosol and air molecules scattering