The optical study of noctilucent clouds from sounding rockets

Details The optical study of noctilucent clouds from sounding rockets The optical study of noctilucent clouds from sounding rockets

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa31b07g&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SA31B-07 INVITED

Computer Science

Sound

0305 Aerosols And Particles (0345, 4801), 0340 Middle Atmosphere--Composition And Chemistry, 0394 Instruments And Techniques

Scientific paper

Photometric measurements from sounding rockets address various properties of noctilucent clouds (NLC). They are a valuable in situ tool for detecting the existence and vertical structure of scattering layers. This is of particular interest for comprehensive studies from multi-instrument rocket payloads. As in situ photometer information is highly localized, it is an important complement to ground-based lidar and radar measurements. Moreover, photometry provides a range of methods addressing more detailed properties of mesospheric particles. This presentation reviews this bandwidth of optical techniques at our disposal. Wavelengths utilized range from ultraviolet measurements accessing the Mie scattering regime to infrared studies aiming at the specific optical features of water ice. Extending measurements to polarization techniques, retrieval of Stokes parameters can further access particle sizes and shapes. However, optical information generally remains ambiguous and combination with other experimental techniques is required to pinpoint specific particle properties. As for applications on sounding rockets, the use of photometer techniques is usually a compromise between experimental ambitions and geometrical constraints on the payload. A discussion of simple photometers techniques outlines efficient ways to include optical methods in future mesospheric rocket programs.

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