The vertical wind profile product from Doppler weather radar has important role for the weather analysis. This paper retrieved vertical wind profiles using three different layered VVP algorithms with an increasing level of complexity (VVP1, VVP2 and VVP3). Radiosonde data, radar volume scan data and vertical wind profile product data retrieved using PUP-VAD algorithmfrom CINRAD-SA were collected, which were measured during Yangjiang 8th international radiosondeintercomparisontest sponsored by WMO from 12 July to 1 August 2010. Take soundingwind as reference, the mean-square deviation and correlation coefficient of wind directions/speeds between sounding wind and retrieved wind were calculated. Take the mean-square deviation and correlation coefficient as evaluation factors, the vertical wind profiles retrieved using layered VVP and PUP-VAD algorithms were intercomparedin two different conditions of relatively uniform and uneven precipitation echo distribution around radar. Results show that, in the two cases, the layered VVP retrieval algorithm provides vertical wind profiles with a higher availability and a better quality than the PUP-VAD algorithm, especially in the case of uneven precipitation echo distribution around radar. Compared to analyze the causes, at a certain height layer, in contrast to a PUP-VAD retrieval, where only those data from a range circle is used, all available scan data in the height layer within 10~100 km range is processed using a multi-dimensional linear regression. The impact of the data coverage ratio on layered VVP retrieval is less than that on PUP-VAD retrieval.
XIAO Yanjiao
,
WAN Yufa
,
WU Tao
,
WANG Jue
. Intercomparison of Vertical Wind Profiles Retrieved Using Two Techniques from Doppler Weather Radar[J]. Plateau Meteorology, 2015
, 34(1)
: 288
-297
.
DOI: 10.7522/j.issn.1000-0534.2013.00136
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