Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026787 |
The Mass-Dimensional Properties of Cirrus Clouds During TC4 | |
Mascio, Jeana; Xu, Zhuocan; Mace, Gerald G. | |
2017-10-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Remote sensing retrievals and ice microphysical parameterizations in global climate models typically use assumptions about the distribution of ice mass as a function of particle size using mass-dimensional (m-D) relationships. This study investigates the ice crystal m-D properties of tropical anvil cirrus during the Tropical Composition, Cloud and Climate Coupling Experiment (TC4) to better document the distribution of ice mass with size in this particular class of tropical ice clouds. Two optimal estimation algorithms (XIWC and MZ) are used to estimate the m-D relationship for each particle size distribution (PSD) collected in situ. The XIWC algorithm minimizes the difference between measured ice water content (IWC) and PSD calculated IWC, while the MZ algorithm minimizes the difference between measured radar reflectivity factors and those calculated from the in situ PSDs. Results from these algorithms are compared to previous studies to establish consistency of the methodologies. The XIWC results show that both parameters in the m-D relationship increase with temperature. Changes in m-D with temperature have substantial implications for remote sensing retrievals. With the prefactor varying by a factor of 5 and the exponent varying by some 16% over a typical range of ice cloud temperatures, forward modeling errors in radar reflectivity could be typically in excess of 5 dB, further suggesting that retrievals of IWC and precipitation rates from radar measurements in ice clouds be in error by factors easily exceeding 3. |
英文关键词 | TC4 tropical anvil cirrus mass-dimensional relation optimal estimation ice crystal properties |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413675900015 |
WOS关键词 | ICE WATER-CONTENT ; COUNTERFLOW VIRTUAL IMPACTOR ; PART I ; TERMINAL VELOCITIES ; RADAR ; AIRBORNE ; RETRIEVALS ; PROBE ; PARAMETERIZATION ; REFLECTIVITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33557 |
专题 | 气候变化 |
作者单位 | Univ Utah, Dept Atmospher Sci, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Mascio, Jeana,Xu, Zhuocan,Mace, Gerald G.. The Mass-Dimensional Properties of Cirrus Clouds During TC4[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(19). |
APA | Mascio, Jeana,Xu, Zhuocan,&Mace, Gerald G..(2017).The Mass-Dimensional Properties of Cirrus Clouds During TC4.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(19). |
MLA | Mascio, Jeana,et al."The Mass-Dimensional Properties of Cirrus Clouds During TC4".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.19(2017). |
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