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Cloud physics lidar: instrument description and initial measurement results.

Matthew McGill1, Dennis Hlavka, William Hart

  • 1NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA. mcgill@virl.gsfc.nasa.gov

Applied Optics
|June 25, 2002
PubMed
Summary

A new Cloud Physics Lidar (CPL) provides high-resolution measurements of cirrus clouds and aerosols from a high-altitude aircraft. Initial data from a 2000 field campaign demonstrate its advanced capabilities for atmospheric research.

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Area of Science:

  • Atmospheric Science
  • Cloud Physics
  • Remote Sensing

Background:

  • Cirrus clouds and aerosols significantly impact Earth's radiative balance.
  • Accurate measurements of these phenomena are crucial for climate modeling.
  • Existing remote sensing technologies have limitations in capturing detailed cloud and aerosol properties.

Purpose of the Study:

  • To introduce the new Cloud Physics Lidar (CPL) instrument.
  • To detail the CPL's capability for multiwavelength measurements of cirrus, subvisual cirrus, and aerosols.
  • To present initial data results from the CPL's first deployment.

Main Methods:

  • Development and deployment of the Cloud Physics Lidar (CPL) on the NASA ER-2 aircraft.
  • Utilizing state-of-the-art technology including a high repetition rate laser and photon-counting detection.

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  • Conducting measurements during the Southern African Regional Science Initiative (SAFARI 2000) field campaign.

    • Main Results:

    • The CPL successfully provided high temporal and spatial resolution data.
    • Initial results illustrate the instrument's capability in characterizing cirrus clouds and aerosols.
    • Demonstrated the effectiveness of photon-counting detection for atmospheric measurements.

    Conclusions:

    • The Cloud Physics Lidar (CPL) is a valuable new instrument for high-altitude atmospheric research.
    • The CPL's advanced technology enables detailed characterization of cirrus and aerosols.
    • The instrument's performance in the SAFARI 2000 campaign validates its measurement capabilities.