Physics
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3102101h&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 2, CiteID L02101
Physics
11
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Evolution Of The Atmosphere, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation
Scientific paper
This study derives effective ice particle densities (ρe) from data collected by the NASA WB-57F aircraft near the tops of Florida anvils during the Cirrus Regional Study of Tropical Anvils and Cirrus Layers (CRYSTAL) Florida Area Cirrus Experiment (FACE). The ρe-ice particle mass divided by the volume of an equivalent diameter liquid sphere-, is obtained for particle populations ($\overline{\rhoe) and single sizes from a few to 200-300 μm in maximum dimension using measurements of condensed water content and particle size distributions. Density values are needed for numerical modeling of ice cloud microphysical properties and remote sensing retrievals, and have not up to now been characterized for cold ice clouds containing mixed particle habits. The $\overline{\rhoe decrease with increasing slopes of gamma size distributions fitted to the size distributions, ranging from 0.15-0.91 g cm-3. For single sizes, ρe obeys a power-law with an exponent of about -0.4.
Bansemer Aaron
Baumgardner Darrel
Heymsfield Andrew J.
Sayres David
Schmitt Carl G.
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