Articles | Volume 11, issue 6
Model description paper
22 Jun 2018
Model description paper |  | 22 Jun 2018

Observational operators for dual polarimetric radars in variational data assimilation systems (PolRad VAR v1.0)

Takuya Kawabata, Thomas Schwitalla, Ahoro Adachi, Hans-Stefan Bauer, Volker Wulfmeyer, Nobuhiro Nagumo, and Hiroshi Yamauchi


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Takuya Kawabata on behalf of the Authors (23 May 2018)
ED: Referee Nomination & Report Request started (24 May 2018) by Josef Koller
RR by Soichiro Sugimoto (29 May 2018)
ED: Publish subject to technical corrections (08 Jun 2018) by Josef Koller
AR by Takuya Kawabata on behalf of the Authors (12 Jun 2018)  Author's response   Manuscript 
Short summary
We implemented two observational operators for dual polarimetric radars in two variational data assimilation systems: WRF Var and NHM-4DVAR. The operators consist of a space interpolator and two types of variable converters. The first variable converter emulates polarimetric parameters with model prognostic variables, and the second derives rainwater content from the observed polarimetric parameter. The system worked properly in verification and assimilation tests.