Detecting wave features in Doppler radial velocity radar observations
<p>Mesoscale, wave-like perturbations in horizontal air motions in the troposphere (velocity waves) are associated with vertical velocity, temperature, and pressure perturbations that can initiate or enhance precipitation within clouds. The ability to detect velocity waves from horizontal wind...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-03-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/15/1689/2022/amt-15-1689-2022.pdf |
| _version_ | 1818442264270077952 |
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| author | M. A. Miller S. E. Yuter N. P. Hoban L. M. Tomkins B. A. Colle |
| author_facet | M. A. Miller S. E. Yuter N. P. Hoban L. M. Tomkins B. A. Colle |
| author_sort | M. A. Miller |
| collection | DOAJ |
| description | <p>Mesoscale, wave-like perturbations in horizontal air motions in the troposphere (velocity waves) are associated with vertical velocity, temperature, and pressure perturbations that can initiate or enhance precipitation within clouds. The ability to detect velocity waves from horizontal wind information is an important tool for atmospheric research and weather forecasting. This paper presents a method to routinely detect velocity waves using Doppler radial velocity data from a scanning weather radar. The method utilizes the difference field between consecutive position plan indicator (PPI) scans at a given elevation angle. Using the difference between fields a few minutes apart highlights small-scale perturbations associated with waves because the larger-scale wind field changes more slowly. Image filtering retains larger contiguous velocity bands and discards noise. Wave detection scales are limited by the size of the temporal difference relative to the wave motion and the radar resolution volume size.</p> |
| first_indexed | 2024-12-14T18:41:23Z |
| format | Article |
| id | doaj.art-ba33d87c51c24b1baccd159c135849b2 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-14T18:41:23Z |
| publishDate | 2022-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-ba33d87c51c24b1baccd159c135849b22022-12-21T22:51:29ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482022-03-01151689170210.5194/amt-15-1689-2022Detecting wave features in Doppler radial velocity radar observationsM. A. Miller0S. E. Yuter1N. P. Hoban2L. M. Tomkins3B. A. Colle4Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USAMarine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USAMarine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USAMarine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USASchool of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, USA<p>Mesoscale, wave-like perturbations in horizontal air motions in the troposphere (velocity waves) are associated with vertical velocity, temperature, and pressure perturbations that can initiate or enhance precipitation within clouds. The ability to detect velocity waves from horizontal wind information is an important tool for atmospheric research and weather forecasting. This paper presents a method to routinely detect velocity waves using Doppler radial velocity data from a scanning weather radar. The method utilizes the difference field between consecutive position plan indicator (PPI) scans at a given elevation angle. Using the difference between fields a few minutes apart highlights small-scale perturbations associated with waves because the larger-scale wind field changes more slowly. Image filtering retains larger contiguous velocity bands and discards noise. Wave detection scales are limited by the size of the temporal difference relative to the wave motion and the radar resolution volume size.</p>https://amt.copernicus.org/articles/15/1689/2022/amt-15-1689-2022.pdf |
| spellingShingle | M. A. Miller S. E. Yuter N. P. Hoban L. M. Tomkins B. A. Colle Detecting wave features in Doppler radial velocity radar observations Atmospheric Measurement Techniques |
| title | Detecting wave features in Doppler radial velocity radar observations |
| title_full | Detecting wave features in Doppler radial velocity radar observations |
| title_fullStr | Detecting wave features in Doppler radial velocity radar observations |
| title_full_unstemmed | Detecting wave features in Doppler radial velocity radar observations |
| title_short | Detecting wave features in Doppler radial velocity radar observations |
| title_sort | detecting wave features in doppler radial velocity radar observations |
| url | https://amt.copernicus.org/articles/15/1689/2022/amt-15-1689-2022.pdf |
| work_keys_str_mv | AT mamiller detectingwavefeaturesindopplerradialvelocityradarobservations AT seyuter detectingwavefeaturesindopplerradialvelocityradarobservations AT nphoban detectingwavefeaturesindopplerradialvelocityradarobservations AT lmtomkins detectingwavefeaturesindopplerradialvelocityradarobservations AT bacolle detectingwavefeaturesindopplerradialvelocityradarobservations |