globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50448
论文题名:
Tropical cyclone cloud-top height and vertical temperature structure detection using GPS radio occultation measurements
作者: Biondi R.; Ho S.-P.; Randel W.; Syndergaard S.; Neubert T.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:11
起始页码: 5247
结束页码: 5259
语种: 英语
英文关键词: cloud top ; convection ; radio occultation ; tropical cyclone
Scopus关键词: Global positioning system ; Heat convection ; Hurricanes ; Radio ; Radiosondes ; Cloud-aerosol lidar with orthogonal polarizations ; GPS radio occultations ; Radio occultations ; Radiosonde temperature ; Temperature anomaly ; Thermal structure ; Tropical cyclone ; Vertical temperature ; Thermal conductivity ; atmospheric convection ; data set ; GPS ; nadir ; radiosonde ; temperature anomaly ; temperature profile ; tropical cyclone
英文摘要: The accurate determination of tropical cyclone (TC) cloud-top height and its vertical thermal structure using the GPS radio occultation (RO) technique is demonstrated in this study. Cloud-top heights are determined by using the bending angle anomaly and the temperature anomaly profiles during the TC events, and the results are compared to near-coincident cloud-top heights determined by Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) measurements. Based on 34 closely located RO-CALIOP pairs during 2006 to 2009, TC cloud-top heights from RO are highly correlated with CALIOP (r = 0.84), with a mean RO-CALIOP cloud-top height difference of approximately 500 m and a root-mean-square difference near 1 km. GPS RO data also allow analysis of the TC thermal structure, showing warm anomalies in the middle troposphere and cold anomalies in the upper levels, with a strong inversion near cloud top. We further investigate the thermal structure of the TCs from collocated radiosondes, and identify 246 RO-radiosonde pairs from 2001 to 2009. Radiosonde data confirm the thermal structure identified in GPS RO, with a strong inversion near the inferred cloud top. The mean difference between RO-derived inversion heights and those from radiosonde temperature profiles is approximately 500 m. Results show that, while cloud-top height detected from nadir-viewing satellites can be easily biased by a few kilometers, the biases of RO-derived cloud-top height are within ∼500 m. © 2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63704
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: DTU Space, National Space Institute, Copenhagen, Denmark; Abdus Salam International Center for Theoretical Physics (ICTP), Trieste, Italy; UCAR/COSMIC, Boulder, CO, United States; NCAR, National Center for Atmospheric Research, Boulder, CO, United States; DMI, Danish Meteorological Institute, Copenhagen, Denmark

Recommended Citation:
Biondi R.,Ho S.-P.,Randel W.,et al. Tropical cyclone cloud-top height and vertical temperature structure detection using GPS radio occultation measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(11)
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