GSTDTAP  > 气候变化
DOI10.1029/2017JD028137
Combining ASCAT and NEXRAD Retrieval Analysis to Explore Wind Features of Mesoscale Oceanic Systems
Priftis, G.1; Lang, T. J.2; Chronis, T.3
2018-09-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:18页码:10322-10341
文章类型Article
语种英语
国家USA
英文摘要

Oceanic mesoscale systems often produce heavy rainfall and can cause significant hazards in coastal regions and aviation. Surface features that are important in the evolution of these systems were examined combining the Advanced Scatterometer (ASCAT) on board the polar-orbiting meteorological satellite series Metop-A and -B and ground instrumentation; that is, Next Generation Weather Radars, soundings, buoys. Two case studies were analyzed, over the coastal United States, by reprojecting ASCAT wind and ground radar precipitation and wind retrievals over a common grid domain. ASCAT retrievals were in agreement with buoy and sounding measurements at distances greater than 30km from the precipitation region. Enhanced uncertainty in ASCAT wind retrievals in heavy precipitation was represented by greater wind direction variability and increases in wind speed. Nevertheless, ASCAT was able to identify regions of convergence and divergence within the systems, as well as outflow boundaries associated with downdrafts, which agreed with wind fields retrieved from the single-Doppler analysis. Quality flags reported by ASCAT were also examined against polarimetric radar retrievals. Thresholds for rain rate and median volume diameter (D-0), corresponding to the boundary between flagged and unflagged ASCAT data, were variable among different cases. However, analysis of ice water path and liquid water path revealed that unflagged ASCAT data rarely exceeded approximately 0.5 kg/m(2) in either parameter.


英文关键词scatterometer oceanic convection NEXRAD ASCAT mesoscale system
领域气候变化
收录类别SCI-E
WOS记录号WOS:000447807300019
WOS关键词HYDROMETEOR IDENTIFICATION ALGORITHM ; THUNDERSTORM GUST FRONTS ; MID-LATITUDE CYCLONES ; SCATTEROMETER DATA ; PRECIPITATION FEATURES ; MICROSCALE STRUCTURE ; CONVECTIVE SYSTEMS ; RADAR MEASUREMENTS ; RAIN DETECTION ; DOPPLER-RADAR
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/34082
专题气候变化
作者单位1.Univ Alabama, Dept Atmospher Sci, Huntsville, AL 35899 USA;
2.NASA, Marshall Flight Space Ctr, Huntsville, AL USA;
3.Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
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Priftis, G.,Lang, T. J.,Chronis, T.. Combining ASCAT and NEXRAD Retrieval Analysis to Explore Wind Features of Mesoscale Oceanic Systems[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10322-10341.
APA Priftis, G.,Lang, T. J.,&Chronis, T..(2018).Combining ASCAT and NEXRAD Retrieval Analysis to Explore Wind Features of Mesoscale Oceanic Systems.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10322-10341.
MLA Priftis, G.,et al."Combining ASCAT and NEXRAD Retrieval Analysis to Explore Wind Features of Mesoscale Oceanic Systems".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10322-10341.
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