2010
DOI: 10.1029/2009jd012100
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HIRDLS and CALIPSO observations of tropical cirrus

Abstract: 1] High Resolution Dynamics Limb Sounder (HIRDLS) and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) measurements of cirrus frequency of occurrence in the upper tropical troposphere are quantified for September 2006 to August 2007. Monthly geospatial averages of cloud frequency of occurrence between 90 and 177 hPa are similar and correlate well with Microwave Limb Sounder (MLS) relative humidity with respect to ice (RHI) data, though clouds are present at individual RHI values less… Show more

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Cited by 59 publications
(74 citation statements)
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“…Because the default soundings in previous SOWER campaigns did not include any sensors for particles, we could not estimate the total water content in which the air mass has ice particles. In addition, for the campaign region and period (i.e., over the western Pacific in the boreal winter), cirrus clouds are common in the TTL; Shibata et al, 2007;Fujiwara et al, 2009;Massie et al, 2010;Yang et al, 2010;Inai et al, 2012;Shibata et al, 2012). If we could observe ice particles and measure their concentration and size distribution, we could estimate their growth rate under the assumption that a critical relative humidity leads to the initiation of ice nucleation, using the same technique as that employed to estimate the efficiency of dehydration (Sect.…”
Section: Lack Of Dehydrated Cases Near the Cold Pointmentioning
confidence: 99%
“…Because the default soundings in previous SOWER campaigns did not include any sensors for particles, we could not estimate the total water content in which the air mass has ice particles. In addition, for the campaign region and period (i.e., over the western Pacific in the boreal winter), cirrus clouds are common in the TTL; Shibata et al, 2007;Fujiwara et al, 2009;Massie et al, 2010;Yang et al, 2010;Inai et al, 2012;Shibata et al, 2012). If we could observe ice particles and measure their concentration and size distribution, we could estimate their growth rate under the assumption that a critical relative humidity leads to the initiation of ice nucleation, using the same technique as that employed to estimate the efficiency of dehydration (Sect.…”
Section: Lack Of Dehydrated Cases Near the Cold Pointmentioning
confidence: 99%
“…We analyzed SVC during the boreal summer (JJA) and winter (DJF), the two periods with the largest tropical cirrus cover (Massie et al, 2010 (Fig. 2, row 1) with maximum occurrence around 195 K, and are on average 5 K warmer in JJA.…”
Section: Svc Observations From Caliopmentioning
confidence: 99%
“…For example, satellite observations indicate that thin cirrus are present in the tropical uppermost troposphere over the western Pacific during Boreal winter about 50-80% of the time (Wang et al, 1996;Yang et al, 2009;Massie et al, 2009). Cirrus in this region of the atmosphere are important for a number of reasons.…”
Section: Introductionmentioning
confidence: 99%