A5028551259- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Precipitation Measurement and Analysis
- Coastal and Marine Dynamics
- Geophysics and Gravity Measurements
- Soil Moisture and Remote Sensing
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Geological and Geophysical Studies
- Underwater Acoustics Research
- Oil Spill Detection and Mitigation
- Aeolian processes and effects
- Atmospheric aerosols and clouds
Jet Propulsion Laboratory
2021-2024
California Institute of Technology
2022-2024
Institut de Ciències del Mar
2020-2022
Consejo Superior de Investigaciones Científicas
2022
Institut Català de Ciències del Clima
2020
Sapienza University of Rome
2014-2016
University of L'Aquila
2014-2015
Accurate high and extreme sea surface wind observations are essential for the meteorological, ocean, climate applications. To properly assess calibrate current future satellite-derived winds, including those from C-band scatterometers, building a consolidated reference data set is crucial. In this work, new approach presented to consistency between moored buoys stepped-frequency microwave radiometer (SFMR)-derived winds. overcome absence of abundant direct collocations these two sets,...
<title>Abstract</title> Ocean images collected by astronauts onboard the Apollo spacecraft more than 50 years ago revealed for first time a large number of ocean eddies, with size between 1 and 20 km. Since then, satellite infrared, color, sun glitter synthetic aperture radar images, high spatial resolution, have confirmed ubiquitous presence these small eddies in all oceans. However, observing dynamical characteristics evolution interconnected has remained challenging. An experiment was...
The airborne Stepped Frequency Microwave Radiometer (SFMR) provides measurements of 10-m ocean-surface wind speed in high and extreme conditions. These winds are calibrated using the surface-adjusted estimates from so-called dropsondes. obtained layer-averaged scaled to altitude eliminate local surface variability not associated with storm strength. SFMR and, consequently, dropsonde represent a possible reference for satellite instrument model calibration/validation at To this end,...
Physical understanding and modeling of Ka-band ocean surface backscatter is challenging due to a lack measurements. In the framework NASA Earth Ventures Suborbital-3 Submesoscale Ocean Dynamics Experiment (S-MODE) mission, Ka-Band continuous wave Doppler Scatterometer (KaBODS) built by University Massachusetts, Amherst (UMass) was installed on Woods Hole Oceanographic Institution (WHOI) Air-Sea Interaction Tower. Together with ASIT anemometers, new data set measurements along wind/wave...
Previous studies have shown the potentiality of X-band synthetic aperture radar in measuring rainfall. A microwave forward model describes Normalized Radar Cross Section (NRCS) as composed by a surface contribution and volumetric inversion techniques were used to derive precipitation over land, particularly bare soil. However, different surfaces may affect SAR signature, so here, we present sensitivity analysis effects for three frequencies such C-, X- Ku-band using two-layer precipitating...
How strong does the wind blow in a hurricane? This proves question that is difficult to answer, but has far-reaching consequences for satellite meteorology, weather forecasting and hurricane advisories. In EUMETSAT CHEFS project, KNMI, ICM IFREMER worked with international colleagues address this prepare EPS-SG SCA scatterometer, which introduces C-band cross-polarization measurements improve detection of hurricane-force winds. To calibrate diverse available satellite, airplane model winds,...
Recent spaceborne polarimetric Synthetic Aperture Radars (SARs) enable the complete characterization of target scattering and extinction properties. Several missions are operating at X band while there plans analyses for systems higher frequencies, such as Ka band. Systems these frequencies have interesting distinctive applications in field geosciences Cartography, Surface deformation detection, Forest cover mapping many others. However, detected ground surface response can be affected by...
Spaceborne synthetic aperture radars (SARs) operating at X-band and above allow observations of Earth surface very high spatial resolution. Moreover, recent polarimetric SARs enable the complete characterization target scattering extinction properties. Nowadays several spaceborne SAR systems are operative, plans exist for higher frequency bands (i.e. Ku, Ka W). Although frequencies may have interesting distinctive applications, atmospheric effects, especially in precipitating conditions,...
Abstract Ocean wind plays a fundamental role in the Earth's climate system by transporting heat, moisture, and gases globally while mediating their exchange with ocean. How, at what scales these processes occur is an active area of research, modeling studies suggest that strongest vertical transport air‐sea exchanges small scales. This paper introduces results from S‐MODE campaign, during which Doppler Scatterometer mapped 2D ocean vector on between 200 m 100 km. While average sense,...
Ocean images collected by astronauts onboard the Apollo spacecraft more than 50 years ago revealed a large number of ocean eddies, with size between 1 and 20 km. Since then, satellite infrared, color, sun glitter synthetic aperture radar images, high spatial resolution, have confirmed ubiquitous presence these small eddies in all oceans. However, observing dynamical characteristics evolution has remained challenging. An experiment was recently carried out California Current system using new...
&lt;p&gt;A particularly pressing requirement in the Ocean Surface Vector Wind (OSVW) community is to obtain reliable extreme winds hurricanes (&gt; 30 m/s) from wind scatterometers, since weather classification, surge and wave forecasts for societal warning are a high priority nowcasting numerical prediction (NWP). A main goal of EUMETSAT C-band High Extreme-Force Speeds (CHEFS) study therefore consolidate an in-situ reference assessing scatterometer extreme-force...
&lt;p&gt;How strong does the wind blows in a hurricane proves question that is difficult to answer, but has far-reaching consequences for satellite meteorology, weather forecasting and advisories. Moreover, huge year-to-year variability extremes challenges evidence changing climatology climate. Tropical circulation conditions, such as El Nino Madden Julian Oscillation, are associated with large their link climate change poorly understood, though of great societal interest. Since...
The Ka-band wind scatterometry is a relatively new methodology to retrieve ocean surface winds. Modeling the backscatter challenging, especially because of lack in-situ measurements. In framework NASA Earth Ventures Suborbital-3 Submesoscale Ocean Dynamics Experiment (S-MODE) mission, data set has been collected. These measurements were obtained from Doppler scatterometer (KaBODS) located on Woods Hole Oceanographic Institution (WHOI) Air-Sea Interaction Tower (ASIT). this work we present...
Spaceborne scatterometer observations, especially at Ku-band, are affected by rain in several ways and these effects need to be corrected avoid errors wind retrievals. In this work we propose a model derive the surface backscattering coefficient presence of both rain. Our approach consists development an ocean wave spectrum accounting for two due raindrops impact on surface: rain-induced damping generation ring waves. The results show that extended is able modifications so it can used...