Publication Date:
2019-05-20
Description:
Real-time quality-controlled surface current data derived from X-Band marine radar (MR)
measurements were evaluated to estimate their operational reliability. The presented data were
acquired by the standard commercial o�-the-shelf MR-based sigma s6 WaMoS® II (WaMoS® II)
deployed onboard the German Research vessel Polarstern. The measurement reliability is specified
by an IQ value obtained by the WaMoS® II real-time quality control (rtQC). Data which pass the
rtQC without objection are assumed to be reliable. For these data sets accuracy and correlation
with corresponding vessel-mounted acoustic Doppler current profiler (ADCP) measurements are
determined. To reduce potential misinterpretation due to short-term oceanic variability/turbulences,
the evaluation of the WaMoS® II accuracy was carried out based on sliding means over 20 min of
the reliable data only. The associated standard deviation �WaMoS = 0.02 m/s of the meanWaMoS® II
measurements reflect a high precision of the measurement and the successful rtQC during di�erent
wave, current and weather conditions. The direct comparison of 7272 WaMoS® II/ADCP northward
and eastward velocity data pairs yield a correlation of r � 0.94, with jbiasDj � 0.06 m/s and
�S = 0.05 m/s. This confirms that the MR-based surface current measurements are accurate
and reliable.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Article
,
isiRev
Format:
application/pdf
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