CO(sub 2) exchange coefficients from space-borne measurements of wind speed: SSM/I versus QuikSCAT in 2000
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SSM/I QuikSCAT↗
Engineering topics
Tang, W.
Publications and source records attributed to Tang, W..
Moisture transport and fresh water flux over oceans
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moisture transport scatterometer↗
Continuous strife for better coverage and more details in ocean surface winds measurements - from Midori and ADEOS-2 to GCOM
The series of joint U.S.-Japan spaceborne scatterometers missions to provide continuous measurements of ocean wind vectors is reviewed. Examples of the scientific impact of the continuous effort in improving spatial resolution and coverage are provided. The plan for the future is reviewed.
winds scatterometer↗
Hydrologic Balance and Ocean-atmosphere Coupling Unveiled by TRMM and QuikSCAT
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Air-Sea-Interaction hydrologic balance satellite o↗
Spacebased observations of ocean influence of continental precipitation through moisture advection
The influence of ocean on the continental rainfall, in seasonal and intraseasonal scales were examined. A method has been developed and validated to estimate IWT from the product of SWV and IWV.
wind rain advection continental precipitation mois↗
Direct retrieval of ocean surface evaporation and latent heat flux from the spacebased observations
The Tropical Rain Measuring Mission (TRMM) provides the opportunity to improve the spacebased estimation of evaporation. An algorithm for retrieving evaporation directly from the radiances observed by the TRMM Microwave Imager and its validation results are described.
heat-flux remote sensing evaporation air-sea-inter↗
MEMS-based force-detected nuclear magnetic resonance spectrometer for in situ planetary exploration
Nuclear Magnetic resonance (NMR) is a well-known spectroscopic technique used by chemists and is especially powerful in detecting the presence of water and distinguishing between arbitrary physisorbed and chemisorbed states. This ability is of particular importance in the search for extra-terrestrial life on planets such as Mars.
in situ instruments NMR FDNMR MEMS↗
Error Analysis on Spacebased Retrieval of Ocean Surface Evaporation
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Ocean Surface Air-Sea Interaction Microwave remote↗
Melting Efficiency During Plasma Arc Welding
A series of partial penetration Variable Polarity Plasma Arc welds were made at equal power but various combinations of current and voltage on 2219 aluminum. Arc Efficiency was measured calorimetrically and ranged between 48% and 66%. Melting efficiency depends on the weld pool shape. Increased current increases the melting efficiency as it increases the depth to width ratio of the weld pool. Higher currents are thought to raise arc pressure and depress the liquid at the bottom of the weld pool causing a more nearly two dimensional heat flow condition.
McClure, J.C.↗
Wind Changes Over the Western Pacific
The history of China has been swayed by winds over the Western Pacific.
wind air-sea interaction remote sensing↗
Correlation-Based Interpolation of NSCAT Wind Data
Daily NASA Scatterometer (NSCAT) wind estimates cover about 75% of the globe.
NSCAT remote sensing air-sea interaction wind↗
MEMS Micro Valve for Space Applications
We report on the development of silicon micro valves for micro-propulsion and other space applications here at JPL.
valves↗
Miniature Biomimetic Acoustic Sensors
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Acoustic biomimetic sensors↗
Spaceborne Scatterometers and Microwave Radiometers in the Studies of Ocean-Atmosphere Interaction
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Air-Sea Interaction Evaporation↗
Development of a Micro-Isolation Valve
A feasibility investigation for a newly proposed microfabricated, normally-closed isolation valve was initiated.
Microvalves microspacecraft micropropulsion micro-↗
MEMS Micro Valve for Space Applications
We report on the development of a Micro-Electro-Mechanical Systems (MEMS) valve that is designed to meet the rigorous performance requirements for a variety of space applications, such as micropropulsion, in-situ chemical analysis of the planet, or micro-fluidics experiments in micro-gravity.
MEMS↗