Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz
WindSat, the first polarimetric radiometer on orbit, launched in January 2003, provides the promise of passive ocean wind vector retrievals on a continuous basis, simultaneous with the retrieval of many other geophysical variables such as sea surface temperature, atmospheric water vapor, cloud liqui...
Main Authors: | , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
Colorado State University. Libraries
2007
|
Subjects: | |
Online Access: | http://hdl.handle.net/10217/684 |
id |
ftmountainschol:oai:mountainscholar.org:10217/684 |
---|---|
record_format |
openpolar |
spelling |
ftmountainschol:oai:mountainscholar.org:10217/684 2023-07-02T03:33:42+02:00 Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz Horgan, Kevin A., author Gaiser, Peter W., author Rose, Louis Allen, 1938-, author Ahser, William E., author Reising, Steven C., author Aziz, Mohammed A., author IEEE, publisher 2007-01-03T07:29:58Z born digital articles application/pdf http://hdl.handle.net/10217/684 English eng eng Colorado State University. Libraries Faculty Publications Aziz, Mohammed A., et al., Effects of Air-Sea Interaction Parameters on Ocean Surface Microwave Emission at 10 and 37 GHz, IEEE Transactions on Geoscience and Remote Sensing 43, no. 8 (August 2005): 1763-1774. http://hdl.handle.net/10217/684 ©2005 IEEE. Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. air-sea interactions fractional area foam coverage friction velocity heat flux microwave emissivity microwave radiometry momentum flux ocean surface ocean surface emissivity significant wave height wind speed Text 2007 ftmountainschol 2023-06-10T17:47:30Z WindSat, the first polarimetric radiometer on orbit, launched in January 2003, provides the promise of passive ocean wind vector retrievals on a continuous basis, simultaneous with the retrieval of many other geophysical variables such as sea surface temperature, atmospheric water vapor, cloud liquid water, and sea ice extent and concentration. WindSat also serves as risk reduction for the upcoming National Polar-orbiting Operational environmental Satellite System (NPOESS) Conical Scanning Microwave Imager/Sounder (CMIS). Since the dependence of microwave brightness temperatures on wind direction is small relative to that of other parameters such as wind speed, wind direction retrieval relies on increasingly accurate knowledge of the ocean surface microwave emission, which depends upon surface properties such as roughness and foam due to wave breaking. Coordinated near-surface measurements of ocean surface microwave emission and air-sea interaction parameters are needed to quantify the effects of the processes mentioned above in surface emission models to improve the accuracy of wind vector retrievals. Such coordinated observations were performed during the Fluxes, Air-Sea Interaction, and Remote Sensing (FAIRS) experiment conducted on the R/P Floating Instrument Platform (FLIP) in the northeastern Pacific Ocean during the Fall of 2000. X- and Ka-band partially polarimetric radiometers were mounted at the end of the port boom of R/P FLIP to measure ocean surface emission at incidence angles of 45°, 53°, and 65°. A bore-sighted video camera recorded the fractional area of foam in the field of view of the radiometers. Air-sea interaction parameters that were measured concurrently include wind speed, friction velocity, heat fluxes, and significant wave height. The measured dependence of ocean surface emissivity on wind speed and friction velocity is in good agreement with, and extends, earlier observations and empirical models based on satellite data. Concurrent radiometric measurements and fractional area foam ... Text Sea ice Mountain Scholar (Digital Collections of Colorado and Wyoming) Pacific |
institution |
Open Polar |
collection |
Mountain Scholar (Digital Collections of Colorado and Wyoming) |
op_collection_id |
ftmountainschol |
language |
English |
topic |
air-sea interactions fractional area foam coverage friction velocity heat flux microwave emissivity microwave radiometry momentum flux ocean surface ocean surface emissivity significant wave height wind speed |
spellingShingle |
air-sea interactions fractional area foam coverage friction velocity heat flux microwave emissivity microwave radiometry momentum flux ocean surface ocean surface emissivity significant wave height wind speed Horgan, Kevin A., author Gaiser, Peter W., author Rose, Louis Allen, 1938-, author Ahser, William E., author Reising, Steven C., author Aziz, Mohammed A., author IEEE, publisher Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
topic_facet |
air-sea interactions fractional area foam coverage friction velocity heat flux microwave emissivity microwave radiometry momentum flux ocean surface ocean surface emissivity significant wave height wind speed |
description |
WindSat, the first polarimetric radiometer on orbit, launched in January 2003, provides the promise of passive ocean wind vector retrievals on a continuous basis, simultaneous with the retrieval of many other geophysical variables such as sea surface temperature, atmospheric water vapor, cloud liquid water, and sea ice extent and concentration. WindSat also serves as risk reduction for the upcoming National Polar-orbiting Operational environmental Satellite System (NPOESS) Conical Scanning Microwave Imager/Sounder (CMIS). Since the dependence of microwave brightness temperatures on wind direction is small relative to that of other parameters such as wind speed, wind direction retrieval relies on increasingly accurate knowledge of the ocean surface microwave emission, which depends upon surface properties such as roughness and foam due to wave breaking. Coordinated near-surface measurements of ocean surface microwave emission and air-sea interaction parameters are needed to quantify the effects of the processes mentioned above in surface emission models to improve the accuracy of wind vector retrievals. Such coordinated observations were performed during the Fluxes, Air-Sea Interaction, and Remote Sensing (FAIRS) experiment conducted on the R/P Floating Instrument Platform (FLIP) in the northeastern Pacific Ocean during the Fall of 2000. X- and Ka-band partially polarimetric radiometers were mounted at the end of the port boom of R/P FLIP to measure ocean surface emission at incidence angles of 45°, 53°, and 65°. A bore-sighted video camera recorded the fractional area of foam in the field of view of the radiometers. Air-sea interaction parameters that were measured concurrently include wind speed, friction velocity, heat fluxes, and significant wave height. The measured dependence of ocean surface emissivity on wind speed and friction velocity is in good agreement with, and extends, earlier observations and empirical models based on satellite data. Concurrent radiometric measurements and fractional area foam ... |
format |
Text |
author |
Horgan, Kevin A., author Gaiser, Peter W., author Rose, Louis Allen, 1938-, author Ahser, William E., author Reising, Steven C., author Aziz, Mohammed A., author IEEE, publisher |
author_facet |
Horgan, Kevin A., author Gaiser, Peter W., author Rose, Louis Allen, 1938-, author Ahser, William E., author Reising, Steven C., author Aziz, Mohammed A., author IEEE, publisher |
author_sort |
Horgan, Kevin A., author |
title |
Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
title_short |
Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
title_full |
Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
title_fullStr |
Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
title_full_unstemmed |
Effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 GHz |
title_sort |
effects of air-sea interaction parameters on ocean surface microwave emission at 10 and 37 ghz |
publisher |
Colorado State University. Libraries |
publishDate |
2007 |
url |
http://hdl.handle.net/10217/684 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Faculty Publications Aziz, Mohammed A., et al., Effects of Air-Sea Interaction Parameters on Ocean Surface Microwave Emission at 10 and 37 GHz, IEEE Transactions on Geoscience and Remote Sensing 43, no. 8 (August 2005): 1763-1774. http://hdl.handle.net/10217/684 |
op_rights |
©2005 IEEE. Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. |
_version_ |
1770273755309801472 |