Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles
This study suggests potential benefits in forecast performance by assimilating clear-sky satellite radiances from geostationary based SEVIRI instrument into the limited area model of HARMONIE-AROME in the far North of Europe. The current geographical limitations of assimilating geostationary have be...
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Stockholm University Press
2025-04-01
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| Series: | Tellus: Series A, Dynamic Meteorology and Oceanography |
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| Online Access: | https://account.a.tellusjournals.se/index.php/su-j-tadmo/article/view/4106 |
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| author | David Schönach Reima Eresmaa Heikki Järvinen |
| author_facet | David Schönach Reima Eresmaa Heikki Järvinen |
| author_sort | David Schönach |
| collection | DOAJ |
| description | This study suggests potential benefits in forecast performance by assimilating clear-sky satellite radiances from geostationary based SEVIRI instrument into the limited area model of HARMONIE-AROME in the far North of Europe. The current geographical limitations of assimilating geostationary have been breached and a series of data assimilation experiments were conducted over a winter period to assess the impact of including SEVIRI water vapor channels at large satellite zenith angles. The results suggest improved background departures and improved analyses for humidity and temperature fields and subsequent enhancements in forecast skill in surface meteorological parameters like pressure, temperature, humidity and clouds. The findings highlight opportunities for using geostationary satellite data beyond current limitations and identify areas for further improvements. |
| format | Article |
| id | doaj-art-7c0da59ba2c64a0d87e7fd817bc0594c |
| institution | DOAJ |
| issn | 1600-0870 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Stockholm University Press |
| record_format | Article |
| series | Tellus: Series A, Dynamic Meteorology and Oceanography |
| spelling | doaj-art-7c0da59ba2c64a0d87e7fd817bc0594c2025-08-20T03:07:35ZengStockholm University PressTellus: Series A, Dynamic Meteorology and Oceanography1600-08702025-04-01771118–135118–13510.16993/tellusa.41064073Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith AnglesDavid Schönach0https://orcid.org/0009-0008-0889-7795Reima Eresmaa1https://orcid.org/0000-0002-9683-0660Heikki Järvinen2https://orcid.org/0000-0003-1879-6804Finnish Meteorological Institute, Helsinki, Uusimaa, 00560Finnish Meteorological Institute, Helsinki, Uusimaa, 00560University of Helsinki, Helsinki, Uusimaa, 00560This study suggests potential benefits in forecast performance by assimilating clear-sky satellite radiances from geostationary based SEVIRI instrument into the limited area model of HARMONIE-AROME in the far North of Europe. The current geographical limitations of assimilating geostationary have been breached and a series of data assimilation experiments were conducted over a winter period to assess the impact of including SEVIRI water vapor channels at large satellite zenith angles. The results suggest improved background departures and improved analyses for humidity and temperature fields and subsequent enhancements in forecast skill in surface meteorological parameters like pressure, temperature, humidity and clouds. The findings highlight opportunities for using geostationary satellite data beyond current limitations and identify areas for further improvements.https://account.a.tellusjournals.se/index.php/su-j-tadmo/article/view/4106satellite radiancedata assimilationnumerical weather prediction (nwp)limited area model (lam)seviri3d-varhigh-latitudes |
| spellingShingle | David Schönach Reima Eresmaa Heikki Järvinen Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles Tellus: Series A, Dynamic Meteorology and Oceanography satellite radiance data assimilation numerical weather prediction (nwp) limited area model (lam) seviri 3d-var high-latitudes |
| title | Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles |
| title_full | Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles |
| title_fullStr | Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles |
| title_full_unstemmed | Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles |
| title_short | Assimilation of SEVIRI Water Vapour Radiances in HARMONIE-AROME at Large Satellite Zenith Angles |
| title_sort | assimilation of seviri water vapour radiances in harmonie arome at large satellite zenith angles |
| topic | satellite radiance data assimilation numerical weather prediction (nwp) limited area model (lam) seviri 3d-var high-latitudes |
| url | https://account.a.tellusjournals.se/index.php/su-j-tadmo/article/view/4106 |
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