Mapping coastal surface winds in Monterey Bay using high frequency radar
Over-water wind directions derived from high frequency (HF) radar - the new Multi-frequency Coastal Radar (MCR) - are compared to in-situ observations to determine the skill of the radar measurements. Conventional beam processing of data collected from two MCR sites located around Monterey Bay durin...
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Monterey, California. Naval Postgraduate School
2012
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ndltd-nps.edu-oai-calhoun.nps.edu-10945-135962014-11-27T16:10:29Z Mapping coastal surface winds in Monterey Bay using high frequency radar Delgado, Raymond R. Paduan, Jeffrey D. Wash, Carlyle H. Meteorology;Physical Oceanography Over-water wind directions derived from high frequency (HF) radar - the new Multi-frequency Coastal Radar (MCR) - are compared to in-situ observations to determine the skill of the radar measurements. Conventional beam processing of data collected from two MCR sites located around Monterey Bay during summer 1997 is used to create wind directions based on the relative strength of the positive and negative Bragg-resonant peaks, which correspond to the wind-driven waves approaching and receding from the radar, respectively. Based on a selected functional relationship that converts the radar signal to wind direction, radar-derived wind directions are created using a new wind- retrieval algorithm and are compared to mooring observations under a variety of wind conditions. Analysis indicates that the signal not only follows wind direction, but also strongly correlates to the wind speed measured at the mooring. Results show that many of the Bragg peaks are close to the noise level, and consequently, low signal-to-noise ratios restrict the statistical confidence of the measurements. Nonetheless, maps of radar-derived wind directions show good agreement with in situ observations, especially when the wind speed is relatively strong and is sustained for long duration. 2012-09-07T15:34:58Z 2012-09-07T15:34:58Z 1999-03 Thesis http://hdl.handle.net/10945/13596 en_US Approved for public release, distribution unlimited. Monterey, California. Naval Postgraduate School |
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en_US |
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description |
Over-water wind directions derived from high frequency (HF) radar - the new Multi-frequency Coastal Radar (MCR) - are compared to in-situ observations to determine the skill of the radar measurements. Conventional beam processing of data collected from two MCR sites located around Monterey Bay during summer 1997 is used to create wind directions based on the relative strength of the positive and negative Bragg-resonant peaks, which correspond to the wind-driven waves approaching and receding from the radar, respectively. Based on a selected functional relationship that converts the radar signal to wind direction, radar-derived wind directions are created using a new wind- retrieval algorithm and are compared to mooring observations under a variety of wind conditions. Analysis indicates that the signal not only follows wind direction, but also strongly correlates to the wind speed measured at the mooring. Results show that many of the Bragg peaks are close to the noise level, and consequently, low signal-to-noise ratios restrict the statistical confidence of the measurements. Nonetheless, maps of radar-derived wind directions show good agreement with in situ observations, especially when the wind speed is relatively strong and is sustained for long duration. |
author2 |
Paduan, Jeffrey D. |
author_facet |
Paduan, Jeffrey D. Delgado, Raymond R. |
author |
Delgado, Raymond R. |
spellingShingle |
Delgado, Raymond R. Mapping coastal surface winds in Monterey Bay using high frequency radar |
author_sort |
Delgado, Raymond R. |
title |
Mapping coastal surface winds in Monterey Bay using high frequency radar |
title_short |
Mapping coastal surface winds in Monterey Bay using high frequency radar |
title_full |
Mapping coastal surface winds in Monterey Bay using high frequency radar |
title_fullStr |
Mapping coastal surface winds in Monterey Bay using high frequency radar |
title_full_unstemmed |
Mapping coastal surface winds in Monterey Bay using high frequency radar |
title_sort |
mapping coastal surface winds in monterey bay using high frequency radar |
publisher |
Monterey, California. Naval Postgraduate School |
publishDate |
2012 |
url |
http://hdl.handle.net/10945/13596 |
work_keys_str_mv |
AT delgadoraymondr mappingcoastalsurfacewindsinmontereybayusinghighfrequencyradar |
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