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<br />also to some extent through an ice multiplication proc1ess involving graupel growth. In contrast,
<br />mesoscale precipitation bands associated with a slowly moving cold front generated much more
<br />significant amounts of snowfall. These precipitation bands periodically disrupted the shallow orographic
<br />SL W clouds. Mesoscale vertical circulations appear to have been particularly important in SL W and
<br />precipitation production along the leading edges of the: bands. Since the SL W clouds during the latter
<br />part of the stonn were based at the frontal boundary, SL W and precipitation gradually diminished as the
<br />barrier became submerged under the cold front.
<br />
<br />Based on a winter stonn conceptual model, we conclude that low-level orographic SL W clouds, when
<br />decoupled from the overlying ice cloud layers of the stonn, are generally inefficient producers of
<br />precipitation due to the typically wann temperatures alt these altitudes in our region.
<br />
<br />Sassen, K., 1989: Supercooled liquid cloud distribution over complex moun~rinous terrain. Proceedings,
<br />5th WMO Scientific Conference on Weather Modification and Applied Cloud Physics, Beijing, China,
<br />May 8-12, 1989. World Meteorological Organization, Geneva, WM(){I'D-No. 269, 1:51-54.
<br />
<br />No abstract.
<br />
<br />Sassen, K., M. T. Davies, and L. Liao, 1989: Remote sensing observations of seeded winter stonns from the
<br />1989 Utah/NOAA Cooperative Weather Modification Program. Final Report to Utah Division of Water
<br />Resources. University of Utah, Salt Lake City, UT, 35 pp.
<br />
<br />No abstract.
<br />
<br />Sassen, K., G. Dodd, and L. Liao, 1988: Polarization lidar and Ka-band radar studies of winter stonns from the
<br />1987 Utah/NOAA Cooperative Weather Modification Program. Final Report to Utah Division of Water
<br />Resources. University of Utah, Salt Lake City, UT, 27 pp.
<br />
<br />No abstract.
<br />
<br />Sassen, K., and M. Griffin, 1988: Mesoscale and microscale structure of cirrus clouds. Three case studies.
<br />Preprints, 10th International Cloud Physics Conference:, IAMAP/lUGG, Bad Homberg, F.R.G.,
<br />August 15-20, 1988. Annalen der Meteorologie, No. 25, ISBN 3-88148-240-7, 11:473-475.
<br />
<br />No abstract.
<br />
<br />Sassen, K., 1986: Lidar and supporting observations of winter stonns from the 1985 Utah/NOAA Cooperative
<br />Weather Modification Program. Final Report to Utah Division of Water Resources, subcontract under
<br />NOAA Cooperative Agreement NA85RAH05031. Department of Meteorology, University of Utah,
<br />Salt Lake City, UT, 73 pp.
<br />
<br />No abstract.
<br />
<br />Sassen, K., R. M. Rauber, and J. B. Snider, 1986: Multiple remote sensor observations of supercooled liquid
<br />water in a winter stonn at Beaver, Utah. Journal of Climate and Applied Meteorology, 25:825-834.
<br />
<br />The temporal and spatial distribution of cloud liquid water in a winter stonn from the 1983 Utah/NOAA
<br />Cooperative Weather Modification Program is characterized using remote sensing observations. The
<br />remote sensors, located at a mountain-base site near Beaver, Utah, consisted of a dual-channel
<br />microwave radiometer operated in an azimuthal scanning mode, and a polarization lidar and ~-band
<br />radar both operated in the vertically pointing mode. The cloud system was associated with the passage
<br />
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