Filters








1,669 Hits in 10.3 sec

Microwave Emission and Scattering from Ocean Surface Waves in the Southern Beaufort Sea

Mukesh Gupta, Randall K. Scharien, David G. Barber
2014 International Journal of Oceanography  
We evaluate ship-based passive microwave brightness temperatures Tb at 37 and 89 GHz and active polarimetric backscatter at 5.5 GHz (C-band), as these relate to buoy-derived ocean wave parameters for distinct  ...  Microwave emission and backscatter are shown to be sensitive to the ocean surface physical roughness as defined by the significant wave height Hm0, compared to wind speed.  ...  The roughness can be estimated by active or passive microwave methods of observation. There are a number of satellites for both active and passive microwave observation of sea ice.  ... 
doi:10.1155/2014/872342 fatcat:slkovv7cxrgffnk3j7loxma5xy

REFERENCE QUALITY EMISSION AND BACKSCATTER MODELLING FOR THE OCEAN

Stephen English, Catherine Prigent, Ben Johnson, Simon Yueh, Emmanuel Dinnat, Jacqueline Boutin, Stuart Newman, Magdalena Anguelova, Thomas Meissner, Masahiro Kazumori, Fuzhong Weng, Alexandre Supply (+4 others)
2020 Bulletin of The American Meteorological Society - (BAMS)  
, and instrumentation-met to provide a reference-quality model for ocean surface emission and backscatter.  ...  What: Sixteen members of an International Space Science Institute team-from America, Asia, and Europe and with backgrounds in radiative transfer modeling, data assimilation, field campaigns, space agencies  ...  Part of this work was conducted as part of a Visiting Scientist Activity for the EUMETSAT Satellite Application  ... 
doi:10.1175/bams-d-20-0085.1 fatcat:y3k65eldrng3vhawfc2sfsis24

Microwave remote sensing from space

K.R. Carver, C. Elachi, F.T. Ulaby
1985 Proceedings of the IEEE  
A brief review of the historical development and principles of active and passive microwave remote sensing is presented, with emphasis on the unique characteristics of the information obtaim able in the  ...  Spaceborne microwave remote sensors provide perspectives of the earth surface and atmosphere which are of unique value in scientific studies of geomorphology, oceanic waves and topography, atmospheric  ...  Fig. 27 shows a global borne L-band imaging radiometer could measure sea-surface wave-height map obtained from the Seasat altimeter.  ... 
doi:10.1109/proc.1985.13230 fatcat:uelvzywrg5d6pms5zc7j2uqggm

Results of the Dragon 4 Project on New Ocean Remote Sensing Data for Operational Applications

Ferran Gibert, Jacqueline Boutin, Wolfgang Dierking, Alba Granados, Yan Li, Eduard Makhoul, Junmin Meng, Alexandre Supply, Ester Vendrell, Jean-Luc Vergely, Jin Wang, Jungang Yang (+3 others)
2021 Remote Sensing  
Combined Active and Passive, SSS retrieval under rain conditions, and the combination of active and passive microwave to study extreme winds.  ...  data over the Yellow Sea; the assessment of sea surface height (SSH), significant wave height (SWH), and wind speed measurements using different altimeters and CFOSAT SWIM; and the fusion of SSH measurements  ...  On another hand, we try to separate the freshening and roughness caused by the raindrops based on the combined L-band passive and active observations.  ... 
doi:10.3390/rs13142847 fatcat:jsh2gqsdkzhrhhetjpsw6f3aqi

Selection of the Key Earth Observation Sensors and Platforms Focusing on Applications for Polar Regions in the Scope of Copernicus System 2020–2030

Estefany Lancheros, Adriano Camps, Hyuk Park, Pedro Rodriguez, Stefania Tonetti, Judith Cote, Stephane Pierotti
2019 Remote Sensing  
An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020  ...  Forecast, Sea Ice Monitoring, Fishing Pressure, and Agriculture and Forestry: Hydric stress as the priority use cases.  ...  The background color in the table indicates the type of platform suitable for the instrument according to the power and mass requirements: gray: mini-platform; black: large-platform.  ... 
doi:10.3390/rs11020175 fatcat:idcj2kj6mzecffvroruitfjnam

Seasat—A 25-year legacy of success

Diane L. Evans, Werner Alpers, Anny Cazenave, Charles Elachi, Tom Farr, David Glackin, Benjamin Holt, Linwood Jones, W. Timothy Liu, Walt McCandless, Yves Menard, Richard Moore (+1 others)
2005 Remote Sensing of Environment  
. objectives were to collect data on sea-surface winds, seasurface temperatures, wave heights, ocean topography, internal waves, atmospheric water, and sea ice properties.  ...  surface; the Seasat-A Satellite Scatterometer (SASS), to measure wind speed and direction over the ocean; the Scanning Multichannel Microwave Radiometer (SMMR) to measure surface wind speed, ocean surface  ...  We wish to acknowledge the valuable contributions to the International Geoscience and Remote Sensing Symposium (IGARSS' 2003) Seasat special session of Tom Allan and Craig Dobson, and the additional comments  ... 
doi:10.1016/j.rse.2004.09.011 fatcat:b72ap4uobnglpaddmeuq7lom7m

SMOS satellite L-band radiometer: A new capability for ocean surface remote sensing in hurricanes

Nicolas Reul, Joseph Tenerelli, Bertrand Chapron, Doug Vandemark, Yves Quilfen, Yann Kerr
2012 Journal of Geophysical Research  
We find the L-band ocean emissivity dependence with wind speed appears less sensitive to roughness and foam changes than at the higher C-band microwave frequencies.  ...  The Soil Moisture and Ocean Salinity (SMOS) mission currently provides multiangular L-band (1.4 GHz) brightness temperature images of the Earth.  ...  In particular we acknowledge Brad Klotz (Rosenstiel School of Marine and Atmospheric Science, Miami) and Eric Uhlhorn from NOAA/AOML/Hurricane Research Division for providing us with some of the data sets  ... 
doi:10.1029/2011jc007474 fatcat:igsnqb367van5hkpahmzxn2vni

Use of satellite observations for operational oceanography: recent achievements and future prospects

P.-Y. Le Traon, D. Antoine, A. Bentamy, H. Bonekamp, L.A. Breivik, B. Chapron, G. Corlett, G. Dibarboure, P. DiGiacomo, C. Donlon, Y. Faugère, J. Font (+20 others)
2015 Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology  
Review of future missions shows clear progress and new research and development missions with a potentially large impact for operational oceanography should be demonstrated.  ...  Improvement of data assimilation techniques and developing synergetic use of high resolution satellite observations are important future priorities.  ...  Sea surface salinity Several mission concepts with L-band passive sensors are currently studied from the European side as a follow on of SMOS: SMOSOps and SUPER MIRAS (ESA led) and SMOS NEXT (CNES led)  ... 
doi:10.1080/1755876x.2015.1022050 fatcat:3dfvqfys65ghdj3633hfnpxria

Harnessing remote sensing to address critical science questions on ocean-atmosphere interactions

Griet Neukermans, Tristan Harmel, Martí Galí, Natalia Rudorff, Jacek Chowdhary, Oleg Dubovik, Chris Hostetler, Yongxiang Hu, Cédric Jamet, Kirk Knobelspiesse, Yoav Lehahn, Pavel Litvinov (+7 others)
2018 Elementa: Science of the Anthropocene  
We provide a thorough review of how these questions have been addressed and discuss novel potential avenues using multiplatform space-borne missions, from visible to microwave, active and passive sensors  ...  Earth observing systems have proven to be a unique source of long-term synoptic information on numerous physical, chemical and biological parameters on a global scale.  ...  Active microwave techniques provide all-weather observations of sea surface roughness and derived variables.  ... 
doi:10.1525/elementa.331 fatcat:qdgrkh6gyffb3jymqpd4hulyaq

Sea Ice Observations in Polar Regions: Evolution of Technologies in Remote Sensing

Praveen Rao Teleti, Alvarinho J. Luis
2013 International journal of geosciences  
The extensive cover of sea ice has major impacts on the atmosphere, oceans, and terrestrial and marine ecosystems of the polar regions in particular and teleconnection on other processes elsewhere.  ...  This work reviews literature published in the field of sea ice remote sensing, to evaluate and access success and failures of different sensors to observe physical features of sea ice.  ...  Operating in one of two operational modes (ocean or ice) the RA provides information on significant wave height, surface wind speed, sea surface elevation, which relates to ocean currents, geoid and tides  ... 
doi:10.4236/ijg.2013.47097 fatcat:6mzdpyuvqzcgzmaxrcjaxo5ng4

The determination of surface salinity with the European SMOS space mission

J. Font, G.S.E. Lagerloef, D.M. Le Vine, A. Camps, O.-Z. Zanife
2004 IEEE Transactions on Geoscience and Remote Sensing  
It uses an L-band (1400-1427 MHz) Microwave Interferometric Radiometer by Aperture Synthesis to measure brightness temperature of the earth's surface at horizontal and vertical polarizations ( h and v  ...  The European Space Agency Soil Moisture and Ocean Salinity (SMOS) mission aims at obtaining global maps of soil moisture and sea surface salinity from space for large-scale and climatic studies.  ...  L-Band Sea Surface Emissivity Forward Models Emission from the ocean surface depends on the structure (e.g., wave-induced roughness) of the surface, including the effects of foam, rain, and other factors  ... 
doi:10.1109/tgrs.2004.834649 fatcat:iwuzdnts6ve2neycceb6m6y4ge

Ocean Measurements from Space in 2025

Anthony Freeman, Victor Zlotnicki, Tim Liu, Ben Holt, Ron Kwok, Simon Yueh, Jorge Vazquez, Dave Siegel, Gary Lagerloef
2010 Oceanography  
Properties currently measured from space are sea surface temperature; topography (height); salinity; significant wave height and wave spectra; surface wind speed and vectors; ocean color; continental and  ...  surface color, sea surface height (SSH), wind speed and vectors, sea surface salinity (SSS), significant wave height and wave spectra, and, to a lesser extent, currents (in the coastal regions, these  ... 
doi:10.5670/oceanog.2010.12 fatcat:vvdbyzp7jfc65odkgwtjgbvrne

Electromagnetic and physical properties of sea ice formed in the presence of wave action

R.G. Onstott, P. Gogineni, A.J. Gow, T.C. Grenfell, K.C. Jezek, D.K. Perovich, C.T. Swift
1998 IEEE Transactions on Geoscience and Remote Sensing  
A variety of sensors, both active and passive, optical and microwave, were used to perform this characterization.  ...  Results showed that emission, backscatter, and albedo all take different signature paths during the transformation from saline water to young sea ice and that the paths depend on sea surface state during  ...  Passive Microwave Results at L-and S-Band Observation of microwave emission at 1.4-GHz (L-band) and 2.6-GHz (S-band) frequencies: HH-polarization were car- ried out at a 50 nadir angle.  ... 
doi:10.1109/36.718644 fatcat:y6autck7w5fwzppy2zx7avepqu

Sea state effect on the sea surface emissivity at l-band

J.J. Miranda, M. Vall-llossera, A. Camps, N. Duffo, I. Corbella, J. Etcheto
2003 IEEE Transactions on Geoscience and Remote Sensing  
Index Terms-Nonstationary sea conditions, sea surface emissivity at L-band, sea surface spectrum, swell effect.  ...  The Wnd and Salinity Experiment (WISE) 2000 and 2001 campaigns were sponsored by ESA to determine the impact of oceanographic and atmospheric variables on the L-band brightness temperature at vertical  ...  ACKNOWLEDGMENT The authors appreciate the cooperation provided by the personnel of Repsol Investigaciones Petrolíferas-Base Tarragona  ... 
doi:10.1109/tgrs.2003.817190 fatcat:f3lrvdvhhjeqblixwo6ymvnwey

Gaps Analysis and Requirements Specification for the Evolution of Copernicus System for Polar Regions Monitoring: Addressing the Challenges in the Horizon 2020–2030

Estefany Lancheros, Adriano Camps, Hyuk Park, Pierre Sicard, Antoine Mangin, Hripsime Matevosyan, Ignasi Lluch
2018 Remote Sensing  
It was found that the top priority is the observation of polar regions to support sustainable and safe commercial activities and the preservation of the environment.  ...  The European Earth Observation (EO) infrastructure is assessed through of comprehensive end-user need and data gap analysis.  ...  Operational SAR sensors in the S-band are HJ-1A/B/C and in the L-band the one on the Advanced Land Observing Satellite-2 (ALOS-2).  ... 
doi:10.3390/rs10071098 fatcat:ozuigsmouncmplzqwcsijwbeh4
« Previous Showing results 1 — 15 out of 1,669 results