Technical reports

The HIRLAM Technical reports since the beginning of the HIRLAM programme are gradually being imported into the DOCman document management system.

 

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TR# Subject Author(s)
HIRLAM Technical Report No. 70 (6.03 MB)icon

HARMONIE verifcation and evaluation
                March 2017 

Wim de Rooy and Hylke de Vries et al
HIRLAM Technical Report No. 69 (3.55 MB)icon A verification score for High resolution NWP:
idealized and preoperational tests
             December 2012

Bent H. Sass and Xiaohua Yang

... Report from the SRNWP Workshop on High
resolution data assimilation with emphasis
on the use of moisture-related observations
                July 2008

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HIRLAM Technical Report No. 68, July 2008

HIRLAM Technical Report No. 68, July 2008 ( 10 Files )

Report from the SRNWP Workshop on High resolution data assimilation with emphasis on the use of moisture-related observations, held 21-23 March 2007 at the Museum of Work, Norrkøping, Sweden. Edited by Nils Gustafsson.

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HIRLAM_TechnicalReport_70 HIRLAM_TechnicalReport_70

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Date added: 05/18/2017
Date modified: 05/18/2017
Filesize: 6.04 MB
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HIRLAM TR70 - HARMONIE verifcation and evaluation - March 2017

Wim de Rooy and Hylke de Vries et al.

This report constitutes a summary of verification and evaluation research of the HARMONIE model. Main attention is on differences between Cy36-based HARMONIE and more recent Cy38- and Cy40-based versions but results of the HIRLAM and ECMWF model are also included. Apart from a conventional verification against synops and radiosonds, this report presents also comparisons of the models against a wide variety of observations such as: MSG retrieved radiation and cloud cover, scatterometer winds, radiosonde trajectories, radar rain data, MODE-S EHS data, and buoys. In this way, conclusions on model performance can be better founded than with standard verification. The results clearly demonstrate the overall improvement with the fully updated cy38 (which is similar to the reference cy40) against the cy36 version, most notable in the wind speed. Moreover, the updated cy38 HARMONIE version substantially outperforms the ECMWF and HIRLAM model on e.g. 10m wind speed and 2m temperature. Additional verification of precipitation using a.o. Fractions Skill Score, presented in de Vries et al. (to be submitted) is consistent with the results shown in this report.

HIRLAM Technical Report No. 69 HIRLAM Technical Report No. 69

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Date added: 02/01/2013
Date modified: 02/01/2013
Filesize: 3.55 MB
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A verification score for High resolution NWP: Idealized and preoperational tests, Bent H. Sass and Xiaohua Yang, December 2012

HIRLAM Technical Report No. 67 HIRLAM Technical Report No. 67

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Date added: 04/07/2009
Date modified: 04/07/2009
Filesize: 376.02 kB
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The 'Lorenz' grid computational mode: implications for transparent boundary conditions and vertical two grid noise, A. McDonald

HIRLAM Technical Report No. 66 HIRLAM Technical Report No. 66

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Date added: 04/07/2009
Date modified: 04/07/2009
Filesize: 1.43 MB
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Diagnosis of error statistics in the HIRLAM 3D-VAR, Beatriz Navascués, Magnus Lindskog, Xiaohua Yang and Bjarne Amstrup, April 2006.

HIRLAM Technical Report No. 65 HIRLAM Technical Report No. 65

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Date added: 04/07/2009
Date modified: 04/07/2009
Filesize: 1.13 MB
Downloads: 7407

Non-hydrostatic adiabatic kernel for HIRLAM Part IV: Semi-implicit semi-Langrangian scheme, Rein Rõõm and Aarne Mannik, January 2006.