Morey, S., Wienders, N., Dukhovskoy, D., & Bourassa, M. (2018). Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar. Remote Sensing , 10 (10), 1633.
Abstract: Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity. These measurements are important for understanding and predicting material transport on the ocean surface as well as the vertical structure of the near-surface currents. These near-surface current observations were obtained during a field experiment in the northern Gulf of Mexico intended to test a new ultra-thin drifter design. During the experiment, thirty small cylindrical drifters with 5 cm height, twenty-eight similar drifters with 10 cm hull height, and fourteen drifters with 91 cm tall drogues centered at 100 cm depth were deployed within the footprint of coastal High-Frequency (HF) radar. Comparison of collocated velocity measurements reveals systematic differences in surface velocity estimates obtained from the different measurement techniques, as well as provides information on properties of the drifter behavior and near-surface shear. Results show that the HF radar velocity estimates had magnitudes significantly lower than the 5 cm and 10 cm drifter velocity of approximately 45% and 35%, respectively. The HF radar velocity magnitudes were similar to the drogued drifter velocity. Analysis of wave directional spectra measurements reveals that surface Stokes drift accounts for much of the velocity difference between the drogued drifters and the thin surface drifters except during times of wave breaking.
Morey, S., Wienders, N., Dukhovskoy, D., & Bourassa, M. (2018). Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar. Remote Sensing , 10 (10), 1633.
Abstract: Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity. These measurements are important for understanding and predicting material transport on the ocean surface as well as the vertical structure of the near-surface currents. These near-surface current observations were obtained during a field experiment in the northern Gulf of Mexico intended to test a new ultra-thin drifter design. During the experiment, thirty small cylindrical drifters with 5 cm height, twenty-eight similar drifters with 10 cm hull height, and fourteen drifters with 91 cm tall drogues centered at 100 cm depth were deployed within the footprint of coastal High-Frequency (HF) radar. Comparison of collocated velocity measurements reveals systematic differences in surface velocity estimates obtained from the different measurement techniques, as well as provides information on properties of the drifter behavior and near-surface shear. Results show that the HF radar velocity estimates had magnitudes significantly lower than the 5 cm and 10 cm drifter velocity of approximately 45% and 35%, respectively. The HF radar velocity magnitudes were similar to the drogued drifter velocity. Analysis of wave directional spectra measurements reveals that surface Stokes drift accounts for much of the velocity difference between the drogued drifters and the thin surface drifters except during times of wave breaking.
Smith, S. R. (2007). Shipboard Automated Meteorological and Oceanographic System (SAMOS) Initiative. In Report for 4rd session of the JCOMM Ship Observation Team meeting, 16-21 April 2007, Geneva, Switzerland (2).
Penduff, T., Brasseur, P., Testut, C. - E., Barnier, B., & Verron, J. (2001). A four-year eddy-permitting assimilation of sea-surface temperature and altimetric data in the South Atlantic Ocean. Journal of Marine Research , 60 (6), 805–833.
Smith, S. R. (2004). Report from the 2nd workshop on high-resolution marine meteorology . COAPS Technical Report 04-01. Tallahassee, FL: Center for Ocean-Atmospheric Prediction Studies, Florida State University.
Smith, S. R., Reynolds, R. M., & O'Brien, J. J. (2003). Report and Recommendations from the Workshop on High-Resolution Marine Meteorology . COAPS Technical Report 03-1. Tallahassee, FL: Center for Ocean-Atmospheric Prediction Studies, Florida State University.
Shin, D. W., & O'Brien, J. J. (2003). A Note on Korean Monsoon Energetics. Korean Journal of Atmospheric Sciences , 6 (1), 55–61.
Kalnay, E., Cai, M., Nunez, M., & Lim, Y. - K. (2008). Impacts of urbanization and land surface changes on climate trends. Urban Climate News , 27 , 5–9.
Winsberg, M. D., O'Brien, J. J., Zierden, D., & Griffin, M. (2003). Florida Weather . Gainesville, FL: University Press of Florida.
Langland, R. H., Maue, R. N., & Bishop, C. H. (2008). Uncertainty in atmospheric temperature analyses. Tellus A , 60 (4), 598–603.
