A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment
This paper presents a first assessment of the hydrometeorological potential of a C-band doppler weather radar recently installed by the Royal Meteorological Institute of Belgium near the village of Wideumont in the southern Ardennes region. An analysis of the vertical profile of reflectivity for two...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2005-01-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/5/267/2005/nhess-5-267-2005.pdf |
| _version_ | 1818469945502072832 |
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| author | A. Berne M. ten Heggeler R. Uijlenhoet L. Delobbe Ph. Dierickx M. de Wit |
| author_facet | A. Berne M. ten Heggeler R. Uijlenhoet L. Delobbe Ph. Dierickx M. de Wit |
| author_sort | A. Berne |
| collection | DOAJ |
| description | This paper presents a first assessment of the hydrometeorological potential of a C-band doppler weather radar recently installed by the Royal Meteorological Institute of Belgium near the village of Wideumont in the southern Ardennes region. An analysis of the vertical profile of reflectivity for two contrasting rainfall events confirms the expected differences between stratiform and convective precipitation. The mean areal rainfall over the Ourthe catchment upstream of Tabreux estimated from the Wideumont weather radar using the standard Marshall-Palmer reflectivity-rain rate relation shows biases between +128% and –42% for six selected precipitation events. For two rainfall events the radar-estimated mean areal rainfall is applied to the gauge-calibrated (lumped) HBV-model for the Ourthe upstream of Tabreux, resulting in a significant underestimation with respect to the observed discharge for one event and a closer match for another. A bootstrap analysis using the radar data reveals that the uncertainty in the hourly discharge from the ~1600km<sup>2</sup>} catchment associated with the sampling uncertainty of the mean areal rainfall estimated from 10 rain gauges evenly spread over the catchment amounts to ±25% for the two events analyzed. This uncertainty is shown to be of the same order of magnitude as that associated with the model variables describing the initial state of the model. |
| first_indexed | 2024-04-13T21:31:23Z |
| format | Article |
| id | doaj.art-2bd5ffa5d1074277a71eac799e2b5cc4 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-04-13T21:31:23Z |
| publishDate | 2005-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-2bd5ffa5d1074277a71eac799e2b5cc42022-12-22T02:29:09ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812005-01-0152267274A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchmentA. BerneM. ten HeggelerR. UijlenhoetL. DelobbePh. DierickxM. de WitThis paper presents a first assessment of the hydrometeorological potential of a C-band doppler weather radar recently installed by the Royal Meteorological Institute of Belgium near the village of Wideumont in the southern Ardennes region. An analysis of the vertical profile of reflectivity for two contrasting rainfall events confirms the expected differences between stratiform and convective precipitation. The mean areal rainfall over the Ourthe catchment upstream of Tabreux estimated from the Wideumont weather radar using the standard Marshall-Palmer reflectivity-rain rate relation shows biases between +128% and –42% for six selected precipitation events. For two rainfall events the radar-estimated mean areal rainfall is applied to the gauge-calibrated (lumped) HBV-model for the Ourthe upstream of Tabreux, resulting in a significant underestimation with respect to the observed discharge for one event and a closer match for another. A bootstrap analysis using the radar data reveals that the uncertainty in the hourly discharge from the ~1600km<sup>2</sup>} catchment associated with the sampling uncertainty of the mean areal rainfall estimated from 10 rain gauges evenly spread over the catchment amounts to ±25% for the two events analyzed. This uncertainty is shown to be of the same order of magnitude as that associated with the model variables describing the initial state of the model.http://www.nat-hazards-earth-syst-sci.net/5/267/2005/nhess-5-267-2005.pdf |
| spellingShingle | A. Berne M. ten Heggeler R. Uijlenhoet L. Delobbe Ph. Dierickx M. de Wit A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment Natural Hazards and Earth System Sciences |
| title | A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment |
| title_full | A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment |
| title_fullStr | A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment |
| title_full_unstemmed | A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment |
| title_short | A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment |
| title_sort | preliminary investigation of radar rainfall estimation in the ardennes region and a first hydrological application for the ourthe catchment |
| url | http://www.nat-hazards-earth-syst-sci.net/5/267/2005/nhess-5-267-2005.pdf |
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