The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks
This work assesses the effects of assimilating atmospheric infrared sounder (AIRS) observations on typhoon prediction using the three-dimensional variational data assimilation (3DVAR) and forecasting system of the weather research and forecasting (WRF) model. Two major parameters in the data assimil...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2011/803593 |
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| _version_ | 1832568182806675456 |
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| author | Chien-Ben Chou Huei-Ping Huang |
| author_facet | Chien-Ben Chou Huei-Ping Huang |
| author_sort | Chien-Ben Chou |
| collection | DOAJ |
| description | This work assesses the effects of assimilating atmospheric infrared sounder (AIRS) observations on typhoon prediction using the three-dimensional variational data assimilation (3DVAR) and forecasting system of the weather research and forecasting (WRF) model. Two major parameters in the data assimilation scheme, the spatial decorrelation scale and the magnitude of the covariance matrix of the background error, are varied in forecast experiments for the track of typhoon Sinlaku over the Western Pacific. The results show that within a wide parameter range, the inclusion of the AIRS observation improves the prediction. Outside this range, notably when the decorrelation scale of the background error is set to a large value, forcing the assimilation of AIRS data leads to degradation of the forecast. This illustrates how the impact of satellite data on the forecast depends on the adjustable parameters for data assimilation. The parameter-sweeping framework is potentially useful for improving operational typhoon prediction. |
| format | Article |
| id | doaj-art-e3fbbe0e02294ef1abc4cf4effaffb26 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-e3fbbe0e02294ef1abc4cf4effaffb262025-02-03T00:59:38ZengWileyAdvances in Meteorology1687-93091687-93172011-01-01201110.1155/2011/803593803593The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon TracksChien-Ben Chou0Huei-Ping Huang1Meteorological Satellite Center, Central Weather Bureau, Taipei 10048, TaiwanSchool for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85281, USAThis work assesses the effects of assimilating atmospheric infrared sounder (AIRS) observations on typhoon prediction using the three-dimensional variational data assimilation (3DVAR) and forecasting system of the weather research and forecasting (WRF) model. Two major parameters in the data assimilation scheme, the spatial decorrelation scale and the magnitude of the covariance matrix of the background error, are varied in forecast experiments for the track of typhoon Sinlaku over the Western Pacific. The results show that within a wide parameter range, the inclusion of the AIRS observation improves the prediction. Outside this range, notably when the decorrelation scale of the background error is set to a large value, forcing the assimilation of AIRS data leads to degradation of the forecast. This illustrates how the impact of satellite data on the forecast depends on the adjustable parameters for data assimilation. The parameter-sweeping framework is potentially useful for improving operational typhoon prediction.http://dx.doi.org/10.1155/2011/803593 |
| spellingShingle | Chien-Ben Chou Huei-Ping Huang The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks Advances in Meteorology |
| title | The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks |
| title_full | The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks |
| title_fullStr | The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks |
| title_full_unstemmed | The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks |
| title_short | The Impact of Assimilating Atmospheric Infrared Sounder Observation on the Forecast of Typhoon Tracks |
| title_sort | impact of assimilating atmospheric infrared sounder observation on the forecast of typhoon tracks |
| url | http://dx.doi.org/10.1155/2011/803593 |
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