Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.05.015 |
CloudSat snowfall estimates over Antarctica and the Southern Ocean: An assessment of independent retrieval methodologies and multi-year snowfall analysis | |
Milani, Lisa1; 39;Ecuyer, Tristan S.2 | |
2018-11-15 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 213页码:121-135 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | CloudSat spaceborne radar snowfall retrievals using two different methodologies - the 2C-SNOW-PROFILE (2C-SNOW) CloudSat product and the combined Kulie and Bennartz (2009) technique with the Hiley et al. (2011) reflectivity (Z) to snowfall rate (S) conversion (KBH) - are compared over Antarctica and surrounding Southern Ocean environments. KBH algorithm sensitivity tests are performed to demonstrate how retrievals are affected by algorithm assumptions (e.g., vertical reflectivity continuity test, the choice of near surface bin used to make surface snowfall rate retrievals, and temperature filters). These algorithm components are found to be detrimental to snowfall detection over this region by significantly reducing the snowfall population compared to 2C-SNOW, especially over ocean regions prone to ERA-interim indicated convective snow. After accounting for key algorithm differences, 2C-SNOW mean annual snowfall rates are systematically higher than KBH due to the Z-S relationship adopted. Spatial annual mean snowfall accumulation differences between the two datasets are minimized over interior Antarctica, but large differences are observed over the ocean. 2C-SNOW Z-S relationships for all snowfall events (Z = 10.9 S-1.3), over ocean and sea ice (Z = 8.2 S-1.3), escarpments and Antarctic coastal areas - below 2000 m a.s.l. (Z = 6.7 S-1.4), and Antarctic plateau - above 2000 m a.s.l. (Z = 5.5 S-1.6) are also derived. A multi-year 2C-SNOW mean annual snowfall analysis is also provided, and comparisons with ERA-Interim snowfall datasets show similar spatial patterns, but magnitude differences over oceans are observed. A monthly 2C-SNOW and acoustic depth gauge analysis is provided to demonstrate qualitative trends in snowfall accumulation between the respective datasets. |
英文关键词 | CloudSat Snowfall Radar Antarctica Precipitation Satellite |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442169800011 |
WOS关键词 | SURFACE MASS-BALANCE ; PRECIPITATION ; RADAR ; ACCUMULATION ; PERFORMANCE |
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/38240 |
专题 | 地球科学 |
作者单位 | 1.Natl Res Council ISAC CNR, Inst Atmospher Sci & Climate, Via Fosso Cavaliere 100, I-00133 Rome, Italy; 2.Michigan Technol Univ, Dept Geol & Min Engn & Sci, 1400 Townsend Dr, Houghton, MI 49931 USA; 3.Univ Wisconsin, Dept Atmospher & Ocean Sci, 1225 W Dayton St, Madison, WI 53706 USA; 4.Univ Bologna, Dept Phys & Astron, Bologna, Italy; 5.Univ Wisconsin, Space Sci & Engn Ctr, 1225 W Dayton St, Madison, WI 53706 USA |
推荐引用方式 GB/T 7714 | Milani, Lisa,39;Ecuyer, Tristan S.. CloudSat snowfall estimates over Antarctica and the Southern Ocean: An assessment of independent retrieval methodologies and multi-year snowfall analysis[J]. ATMOSPHERIC RESEARCH,2018,213:121-135. |
APA | Milani, Lisa,&39;Ecuyer, Tristan S..(2018).CloudSat snowfall estimates over Antarctica and the Southern Ocean: An assessment of independent retrieval methodologies and multi-year snowfall analysis.ATMOSPHERIC RESEARCH,213,121-135. |
MLA | Milani, Lisa,et al."CloudSat snowfall estimates over Antarctica and the Southern Ocean: An assessment of independent retrieval methodologies and multi-year snowfall analysis".ATMOSPHERIC RESEARCH 213(2018):121-135. |
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