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... > Instruments > Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Lidar/Laser Sounders > DAWN

Preferred term

DAWN  

Definition

  • [Text Source: http://airbornescience.nasa.gov/instrument/DAWN ] DAWN (Doppler Aerosol WiNd lidar) is a pulsed laser, 2-micron, and solid-state. It pulses at 10 Hertz with 250 mJ pulses that are 200 ns long full width at half maximum (FWHM). Using the wedge scanner, five different azimuth angles are measured: 1) to end up with five equations for the three unknown components of wind vs. altitude, 2) to mitigate cloud obscurations, and 3) to measure the atmospheric variability. DAWN can provide vertical profiles of u, v, and w components of 3-D wind in the region below the aircraft. Various vertical and horizontal resolutions are possible. DAWN can also provide vertical profiles of line of sight (LOS) wind for the five (5) azimuth angles; vertical profiles of relative aerosol backscatter in the region below the aircraft, for the five (5) azimuth angles; vertical profiles of wind turbulence in the region below the aircraft, for the five (5) azimuth angles; and correlations of the data products vs. height. Instrument Type: Lidar Measurements: Wind, Aerosol Backscattering Aircraft: DC-8 Instrument Team: Michael J. Kavaya (PI) Missions: GRIP (DC-8) Group: Instrument_Details Entry_ID: DAWN Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Profilers/Sounders Instrument_Subtype: Lidar/Laser Sounders Short_Name: DAWN Long_Name: Doppler Aerosol WiNd Lidar End_Group Group: Associated_Platforms Short_Name: NASA DC-8 End_Group Online_Resource: http://airbornescience.nasa.gov/instrument/DAWN Creation_Date: 2012-05-01 Group: Instrument_Logistics Instrument_Owner: USA/NASA End_Group End_Group (en)

Broader concept

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https://gcmd.earthdata.nasa.gov/kms/concept/6c237a14-1064-41e6-add7-8ad2962cf8e7

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