{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:02:35Z","timestamp":1760241755621,"version":"build-2065373602"},"reference-count":44,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2018,8,4]],"date-time":"2018-08-04T00:00:00Z","timestamp":1533340800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009917","name":"U.S. Naval Research Laboratory","doi-asserted-by":"publisher","award":["WUs BE023-01-41-1C04, -1C02 and -6692"],"award-info":[{"award-number":["WUs BE023-01-41-1C04, -1C02 and -6692"]}],"id":[{"id":"10.13039\/100009917","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000006","name":"Office of Naval Research","doi-asserted-by":"publisher","award":["N0001418WX01087"],"award-info":[{"award-number":["N0001418WX01087"]}],"id":[{"id":"10.13039\/100000006","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["OCE-1540648"],"award-info":[{"award-number":["OCE-1540648"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This study takes on the challenge of resolving upper ocean surface currents with a suite of airborne remote sensing methodologies, simultaneously imaging the ocean surface in visible, infrared, and microwave bands. A series of flights were conducted over an air-sea interaction supersite established 63 km offshore by a large multi-platform CASPER-East experiment. The supersite was equipped with a range of in situ instruments resolving air-sea interface and underwater properties, of which a bottom-mounted acoustic Doppler current profiler was used extensively in this paper for the purposes of airborne current retrieval validation and interpretation. A series of water-tracing dye releases took place in coordination with aircraft overpasses, enabling dye plume velocimetry over 100 m to 10 km spatial scales. Similar scales were resolved by a Multichannel Synthetic Aperture Radar, which resolved a swath of instantaneous surface velocities (wave and current) with 10 m resolution and 5 cm\/s accuracy. Details of the skin temperature variability imprinted by the upper ocean turbulence were revealed in 1\u201314,000 m range of spatial scales by a mid-wave infrared camera. Combined, these methodologies provide a unique insight into the complex spatial structure of the upper ocean turbulence on a previously under-resolved range of spatial scales from meters to kilometers. However, much attention in this paper is dedicated to quantifying and understanding uncertainties and ambiguities associated with these remote sensing methodologies, especially regarding the smallest resolvable turbulent scales and reference depths of retrieved currents.<\/jats:p>","DOI":"10.3390\/rs10081224","type":"journal-article","created":{"date-parts":[[2018,8,7]],"date-time":"2018-08-07T03:44:18Z","timestamp":1533613458000},"page":"1224","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Airborne Remote Sensing of the Upper Ocean Turbulence during CASPER-East"],"prefix":"10.3390","volume":"10","author":[{"given":"Ivan","family":"Savelyev","sequence":"first","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4940-5987","authenticated-orcid":false,"given":"William","family":"Miller","sequence":"additional","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark","family":"Sletten","sequence":"additional","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4570-2092","authenticated-orcid":false,"given":"Geoffrey","family":"Smith","sequence":"additional","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dana","family":"Savidge","sequence":"additional","affiliation":[{"name":"Skidaway Institute of Oceanography, Savannah, GA 31411, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Glendon","family":"Frick","sequence":"additional","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steven","family":"Menk","sequence":"additional","affiliation":[{"name":"Remote Sensing Division, US Naval Research Laboratory, Washington, DC 20375, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Trent","family":"Moore","sequence":"additional","affiliation":[{"name":"Skidaway Institute of Oceanography, Savannah, GA 31411, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tony","family":"De Paolo","sequence":"additional","affiliation":[{"name":"Scripps Institution of Oceanography, La Jolla, CA 92037, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Terrill","sequence":"additional","affiliation":[{"name":"Scripps Institution of Oceanography, La Jolla, CA 92037, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qing","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Meteorology, US Naval Postgraduate School, Monterey, CA 93943, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Shearman","sequence":"additional","affiliation":[{"name":"College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,8,4]]},"reference":[{"doi-asserted-by":"crossref","unstructured":"Dugan, J.P., and Piotrowski, C.C. (2012). Measuring currents in a coastal inlet by advection of turbulent eddies in airborne optical imagery. J. Geophys. Res. Oceans, 117.","key":"ref_1","DOI":"10.1029\/2011JC007600"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2027","DOI":"10.1109\/LGRS.2017.2749120","article-title":"Video-Based Estimation of Surface Currents Using a Low-Cost Quadcopter","volume":"14","author":"Carrasco","year":"2017","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1002\/2017GL075891","article-title":"Observations of Near-Surface Current Shear Help Describe Oceanic Oil and Plastic Transport","volume":"45","author":"Laxague","year":"2018","journal-title":"Geophys. Res. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1146\/annurev-marine-121211-172408","article-title":"Remote sensing of the nearshore","volume":"5","author":"Holman","year":"2013","journal-title":"Annu. Rev. Mar. Sci."},{"doi-asserted-by":"crossref","unstructured":"Hwang, P.A., and Sletten, M.A. (2008). Energy dissipation of wind-generated waves and whitecap coverage. J. Geophys. Res. Oceans, 113.","key":"ref_5","DOI":"10.1029\/2007JC004277"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1126\/science.87.2250.119","article-title":"Surface motion of water induced by wind","volume":"87","author":"Langmuir","year":"1938","journal-title":"Science"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1016\/j.csr.2017.08.021","article-title":"Turbulence characteristics inferred from time-lagged satellite imagery of surface algae in a shallow tidal sea","volume":"148","author":"Marmorino","year":"2017","journal-title":"Cont. Shelf Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"S270","DOI":"10.1063\/1.1762467","article-title":"Upper Ocean Boundary-Layer Flow Determined by Dye Diffusion","volume":"10","author":"Ichiye","year":"1967","journal-title":"Phys. Fluids"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"7584","DOI":"10.1002\/2014GL061637","article-title":"Observations and numerical simulations of large-eddy circulation in the ocean surface mixed layer","volume":"41","author":"Sundermeyer","year":"2014","journal-title":"Geophys. Res. Lett."},{"doi-asserted-by":"crossref","unstructured":"Marmorino, G.O., Smith, G.B., and Lindemann, G.J. (2004). Infrared imagery of ocean internal waves. Geophys. Res. Lett., 31.","key":"ref_10","DOI":"10.1029\/2004GL020152"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"043502","DOI":"10.1117\/1.3302630","article-title":"Detection of a buoyant coastal wastewater discharge using airborne hyperspectral and infrared imagery","volume":"4","author":"Marmorino","year":"2010","journal-title":"J. Appl. Remote Sens."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1016\/j.dsr.2011.01.001","article-title":"Airborne imagery of a disintegrating Sargassum drift line","volume":"58","author":"Marmorino","year":"2011","journal-title":"Deep Sea Res. Part I Oceanogr. Res. Pap."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1710","DOI":"10.1109\/JSTARS.2013.2257695","article-title":"Infrared remote sensing of surf-zone eddies","volume":"6","author":"Marmorino","year":"2013","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"3239","DOI":"10.3390\/rs5073239","article-title":"Surface imprints of water-column turbulence: A case study of tidal flow over an estuarine sill","volume":"5","author":"Marmorino","year":"2013","journal-title":"Remote Sens."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1109\/LGRS.2004.841629","article-title":"High-resolution airborne infrared measurements of ocean skin temperature","volume":"2","author":"Zappa","year":"2005","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1002\/2017GL075735","article-title":"Aerial observations of symmetric instability at the north wall of the Gulf Stream","volume":"45","author":"Savelyev","year":"2018","journal-title":"Geophys. Res. Lett."},{"doi-asserted-by":"crossref","unstructured":"Garbe, C.S., Schimpf, U., and J\u00e4hne, B. (2004). A surface renewal model to analyze infrared image sequences of the ocean surface for the study of air-sea heat and gas exchange. J. Geophys. Res. Oceans, 109.","key":"ref_17","DOI":"10.1029\/2003JC001802"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"3895","DOI":"10.1109\/TGRS.2013.2277815","article-title":"Airborne infrared remote sensing of riverine currents","volume":"52","author":"Dugan","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"doi-asserted-by":"crossref","unstructured":"Chickadel, C.C., Horner-Devine, A.R., Talke, S.A., and Jessup, A.T. (2009). Vertical boil propagation from a submerged estuarine sill. Geophys. Res. Lett., 36.","key":"ref_19","DOI":"10.1029\/2009GL037278"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2178","DOI":"10.1002\/2015WR017736","article-title":"Remote monitoring of volumetric discharge employing bathymetry determined from surface turbulence metrics","volume":"52","author":"Johnson","year":"2016","journal-title":"Water Resour. Res."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"849","DOI":"10.1109\/LGRS.2011.2125942","article-title":"Infrared-based measurements of velocity, turbulent kinetic energy, and dissipation at the water surface in a tidal river","volume":"8","author":"Chickadel","year":"2011","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"doi-asserted-by":"crossref","unstructured":"Mied, R.P., Chen, W., Smith, G.B., Wagner, E.J., Miller, W.D., Snow, C.M., Marmorino, G.O., and Rhea, W.J. (2018). Airborne Remote Sensing of Surface Velocities in a Tidal River. IEEE Trans. Geosci. Remote Sens., 1\u20139.","key":"ref_22","DOI":"10.1109\/TGRS.2018.2826366"},{"unstructured":"Marmorino, G.O., Smith, G.B., North, R.P., and Baschek, B. Application of airborne infrared remote sensing to the study of ocean submesoscale dynamics. Front. Mar. Sci., Under review.","key":"ref_23"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1077","DOI":"10.1175\/JTECH-D-17-0154.1","article-title":"Near-surface Current Mapping by Shipboard Marine X-band Radar: A Validation","volume":"35","author":"Lund","year":"2018","journal-title":"J. Atmos. Ocean. Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"122","DOI":"10.4031\/MTSJ.44.6.6","article-title":"The integrated ocean observing system high-frequency radar network: Status and local, regional, and national applications","volume":"44","author":"Harlan","year":"2010","journal-title":"Mar. Technol. Soc. J."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"707","DOI":"10.1038\/328707a0","article-title":"Interferometric radar measurement of ocean surface currents","volume":"328","author":"Goldstein","year":"1987","journal-title":"Nature"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2494","DOI":"10.1109\/TGRS.2005.848603","article-title":"Sea surface velocity vector retrieval using dual-beam interferometry: First demonstration","volume":"43","author":"Toporkov","year":"2005","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"doi-asserted-by":"crossref","unstructured":"Farquharson, G., Deng, H., Goncharenko, Y., and Mower, J. (2014, January 13\u201318). Dual-beam ATI SAR measurements of surface currents in the nearshore ocean. Proceedings of the 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Quebec City, QC, Canada.","key":"ref_28","DOI":"10.1109\/IGARSS.2014.6947021"},{"doi-asserted-by":"crossref","unstructured":"Hwang, P.A., Toporkov, J.V., Sletten, M.A., Lamb, D., and Perkovic, D. (2006). An experimental investigation of wave measurements using a dual-beam interferometer: Gulf Stream as a surface wave guide. J. Geophys. Res. Oceans, 111.","key":"ref_29","DOI":"10.1029\/2006JC003482"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"2509","DOI":"10.1175\/JTECH-D-17-0055.1","article-title":"A biodegradable surface drifter for ocean sampling on a massive scale","volume":"34","author":"Novelli","year":"2017","journal-title":"J. Atmos. Ocean. Technol."},{"unstructured":"Wang, Q., Alappattu, D.P., Billingsley, S., Blomquist, B., Burkholder, R.J., Christman, A.J., Creegan, E.D., de Paolo, T., Eleuterio, D.P., and Fernando, H.J.S. (2017). CASPER: Coupled Air-Sea Processes and Electromagnetic (EM) ducting Research. Bull. Am. Meteorol. Soc.","key":"ref_31"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1501","DOI":"10.1364\/AO.50.001501","article-title":"Hyperspectral imager for the coastal ocean: Instrument description and first images","volume":"50","author":"Lucke","year":"2011","journal-title":"Appl. Opt."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"F256","DOI":"10.1364\/AO.54.00F256","article-title":"Airborne system for multispectral, multiangle polarimetric imaging","volume":"54","author":"Bowles","year":"2015","journal-title":"Appl. Opt."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"2609","DOI":"10.1080\/01431160110115825","article-title":"Geo-atmospheric processing of airborne imaging spectrometry data. Part 1: Parametric orthorectification","volume":"23","author":"Schlapfer","year":"2002","journal-title":"Int. J. Remote Sens."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"2107","DOI":"10.1080\/01431160500034086","article-title":"Simple and robust removal of sun glint for mapping shallow-water benthos","volume":"26","author":"Hedley","year":"2005","journal-title":"Int. J. Remote Sens."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1080\/01431169008955022","article-title":"Mapping of phytoplankton by solar-stimulated fluorescence using an imaging spectrometer","volume":"11","author":"Gower","year":"1990","journal-title":"Int. J. Remote. Sens."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/S0034-4257(96)00073-9","article-title":"An analysis of chlorophyll fluorescence algorithms for the Moderate Resolution Imaging Spectrometer (MODIS)","volume":"58","author":"Letelier","year":"1996","journal-title":"Remote Sens. Environ."},{"unstructured":"Myer, G.E. (1971). Structure and Mechanics of Langmuir Circulations on a Small Inland Lake. [Ph.D. Thesis, The State University of New York].","key":"ref_38"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"6783","DOI":"10.1109\/TGRS.2016.2590958","article-title":"Maritime Signature Correction with the NRL Multichannel SAR","volume":"54","author":"Sletten","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"4025","DOI":"10.1109\/TGRS.2018.2820911","article-title":"Practical Multi Channel SAR Imaging in the Maritime Environment","volume":"56","author":"Jansen","year":"2018","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"doi-asserted-by":"crossref","unstructured":"Sletten, M., and Toporkov, J. (2017, January 23\u201328). An Interferometric Approach to Ocean Surface Velocity Imaging Using Multi-Channel SAR. Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Fort Worth, TX, USA.","key":"ref_41","DOI":"10.1109\/IGARSS.2017.8126901"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"792","DOI":"10.1175\/1520-0485(1996)026<0792:EOKEDU>2.0.CO;2","article-title":"Estimates of kinetic energy dissipation under breaking waves","volume":"26","author":"Terray","year":"1996","journal-title":"J. Phys. Oceanogr."},{"doi-asserted-by":"crossref","unstructured":"Callies, J., Ferrari, R., Klymak, J.M., and Gula, J. (2015). Seasonality in submesoscale turbulence. Nat. Commun., 6.","key":"ref_43","DOI":"10.1038\/ncomms7862"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"2988","DOI":"10.1109\/TGRS.2015.2509781","article-title":"Surface current measurements using X-band marine radar with vertical polarization","volume":"54","author":"Huang","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/8\/1224\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:16:33Z","timestamp":1760195793000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/8\/1224"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,8,4]]},"references-count":44,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2018,8]]}},"alternative-id":["rs10081224"],"URL":"https:\/\/doi.org\/10.3390\/rs10081224","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2018,8,4]]}}}