Understanding Radar Refractivity: Sources of Uncertainty
Understanding Radar Refractivity: Sources of Uncertainty
复制标题
了解雷达折射率：不确定性的来源
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Jidong Gao
中科院分区：
文献类型：
--
作者：
D. Bodine;D. Michaud;R. Palmer;P. Heinselman;J. Brotzge;N. Gasperoni;B. Cheong;M. Xue;Jidong Gao
摘要这项研究对俄克拉荷马州中索工作（“ Mesonet”）进行了2年的比较，对天气监测雷达1988多普勒（WSR-88D）的折射率进行了比较，并听起来很挑战，并讨论了在辐射质量操作中实施一些挑战。但是，观察到雷达的高度相关性与雷达和雷达的折射率差异很大。如果频率漂移在不同时间进行的不同参考图可以“移动”折射率，则最多可以引入10个n个单位。在不同的条件下。
AbstractThis study presents a 2-yr-long comparison of Weather Surveillance Radar-1988 Doppler (WSR-88D) refractivity retrievals with Oklahoma Mesonetwork (“Mesonet”) and sounding measurements and discusses some challenges to implementing radar refractivity operationally. Temporal and spatial analyses of radar refractivity exhibit high correlation with Mesonet data; however, periods of large refractivity differences between the radar and Mesonet are observed. Several sources of refractivity differences are examined to determine the cause of large refractivity differences. One source for nonklystron radars includes magnetron frequency drift, which can introduce errors up to 10 N-units if the frequency drift is not corrected. Different reference maps made at different times can “shift” refractivity values. A semiautomated method for producing reference maps is presented, including trade-offs for making reference maps under different conditions. Refractivity from six Mesonet stations within the clutter domain...