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

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

doi:https://doi.org/10.5194/gmd-11-2493-2018

Articles | Volume 11, issue 6

https://doi.org/10.5194/gmd-11-2493-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-11-2493-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

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

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Final revised paper (published on 22 Jun 2018)
Preprint (discussion started on 23 Mar 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

SC1: 'Executive Editor comment on "Observational operators for dual polarimetric radars in variational data assimilation systems"', Astrid Kerkweg, 04 Apr 2018
- AC1: 'Response', Takuya Kawabata, 10 Apr 2018
RC1: 'Observation operators for dual polarimetric radars in variational data assimilation systems', Juanzhen Sun, 13 Apr 2018
- AC2: 'Response to RC1', Takuya Kawabata, 23 May 2018
RC2: 'Comments on “Observational operators for dual polarimetric radars in variational data assimilation systems”', Soichiro Sugimoto, 02 May 2018
- AC3: 'Response to RC2', Takuya Kawabata, 23 May 2018

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.