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159 results on '"Fore, Alexander"'

1. Remotely Sensed Winds and Wind Stresses for Marine Forecasting and Ocean Modeling

Author

Bourassa, Mark A, Meissner, Thomas, Cerovecki, Ivana, Chang, Paul S, Dong, Xiaolong, De Chiara, Giovanna, Donlon, Craig, Dukhovskoy, Dmitry S, Elya, Jocelyn, Fore, Alexander, Fewings, Melanie R, Foster, Ralph C, Gille, Sarah T, Haus, Brian K, Hristova-Veleva, Svetla, Holbach, Heather M, Jelenak, Zorana, Knaff, John A, Kranz, Sven A, Manaster, Andrew, Mazloff, Matthew, Mears, Carl, Mouche, Alexis, Portabella, Marcos, Reul, Nicolas, Ricciardulli, Lucrezia, Rodriguez, Ernesto, Sampson, Charles, Solis, Daniel, Stoffelen, Ad, Stukel, Michael R, Stiles, Bryan, Weissman, David, and Wentz, Frank

Subjects
Earth Sciences, Oceanography, satellite, wind, stress, ocean, requirements, Ecology, Geology
Abstract

Strengths and weakness of remotely sensed winds are discussed, along with the current capabilities for remotely sensing winds and stress. Future missions are briefly mentioned. The observational needs for a wide range of wind and stress applications are provided. These needs strongly support a short list of desired capabilities of future missions and constellations.

Published
2019

6. Creating an extended and consistent ESDR of the ocean surface winds, stress and their dynamically-significant derivatives for the period 1999-2022 - a MEaSUREs-funded proposal: Developing and evaluating the harmonized retrievals of wind and stress

Author

Jacob, Joseph, Vane, Ethan Wright Robin, Jacobs, Robert, Emond, Marc, Dunbar, Roy S, Callahan, Philip, Vu, Quoc, Knosp, Brian, Li, P. Peggy, Wineteer, Alexander, Vandemark, Douglas, Turk, F. Joseph, 'Rodriguez, Larry O'Neill Ernesto', 'Stiles, Bryan, Moroni, David, Kilpatrick, Thomas, Fore, Alexander, Dunbar, Scott, Bourassa, Mark, and Hristova-Veleva, Svetla

Published
2021

8. Creating an extended and consistent ESDR of the ocean surface winds, stress and their dynamically-significant derivatives for the period 1999-2022 - a MEaSUREs-funded proposal: Developing and evaluating the harmonized retrievals of wind and stress

Author

Hristova-Veleva, Svetla, Bourassa, Mark, Dunbar, Scott, Fore, Alexander, Kilpatrick, Thomas, Moroni, David, Rodriguez, Larry O'Neill Ernesto, Stiles, Bryan, Turk, F. Joseph, Vandemark, Douglas, Wineteer, Alexander, Li, P. Peggy, Knosp, Brian, Vu, Quoc, Callahan, Philip, Dunbar, Roy S, Emond, Marc, Jacobs, Robert, Vane, Ethan Wright Robin, and Jacob, Joseph

Published
2021

14. Exploring the Impact of Sea Surface Temperature and Salinity on SMAP Excess Surface Emissivity

Author

Said, Faozi, Jelenak, Zorana, Chang, Paul S., Tang, Wenqing, Fore, Alexander G., Akins, Alexander, and Yueh, Simon H.

Abstract

The soil moisture active passive (SMAP) instrument has been used to infer sea surface wind speed from its brightness temperature measurements. To do so, the SMAP wind speed retrieval process requires the removal of sea surface temperature (sst) and sea surface salinity (sss) impact on brightness temperature. Estimating the so-called excess surface emissivity ( $\Delta {e}$ ), that is the sst normalized difference between the measured brightness temperature of the sea surface and the corresponding brightness temperature of a flat surface, is one way of accomplishing such a task. In this article, we investigate whether SMAP $\Delta {e}$ contains residual dependencies to sst and sss. To do so, v5.0 SMAP brightness temperature measurements, derived by the Jet Propulsion Laboratory, are used. For any fixed numerical weather prediction model wind speed above 15 m/s, down to a 20% decrease in SMAP $\Delta {e}$ is observed as the sst increases from 274 to 304 K. For any fixed wind speed between 8 and 15 m/s, the sst residual dependence is weaker with SMAP $\Delta {e}$ exhibiting a 1%–2% decrease as the sst increases. Below 8 m/s, this pattern becomes prevalent again, when the significant wave height (Hs) is greater than 3.5 m. SMAP $\Delta {e}$ decreases as much as 50% with increasing sss, most notably below 8 and above 15 m/s when Hs is considered. This analysis has also shown that below 8 m/s and for swell dominant seas, a decrease in either sss or sst results in a decrease in SMAP $\Delta {e}$ sensitivity to wind-induced sea surface roughness.

Published
2024
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