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Characterizing relative humidity with respect to ice in midlatitude cirrus clouds as a function of atmospheric state
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2016
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Source: Journal of Geophysical Research: Atmospheres, 121(20), 12,253-12,269
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:Midlatitude cirrus cloud macrophysical and microphysical properties have been shown in previous studies to vary seasonally and in various large-scale dynamical regimes, but relative humidity with respect to ice (RHI) within cirrus clouds has not been studied extensively in this context. Using a combination of radiosonde and millimeter-wavelength cloud radar data, we identify 1076 cirrus cloudsspanning a 7 year period from 2004 to 2011. These data are separated into five classes using a previously published algorithm that is based largely on synoptic conditions. Using these data and classi fication scheme, wefind that RHI in cirrus clouds varies seasonally. Variations in cirrus cloud RHI exist within the prescribed classi fications; however, most of the variations are within the measurement uncertainty. Additionally, with
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Source:Journal of Geophysical Research: Atmospheres, 121(20), 12,253-12,269
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ISSN:2169-897X
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Rights Information:Other
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