A5015492924- Geophysics and Gravity Measurements
- Arctic and Antarctic ice dynamics
- Oceanographic and Atmospheric Processes
- Cryospheric studies and observations
- Ocean Waves and Remote Sensing
- Methane Hydrates and Related Phenomena
- Winter Sports Injuries and Performance
- Soil Moisture and Remote Sensing
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Climate change and permafrost
- GNSS positioning and interference
- Meteorological Phenomena and Simulations
- Spacecraft and Cryogenic Technologies
- Spacecraft Design and Technology
- Hydrology and Watershed Management Studies
- Satellite Image Processing and Photogrammetry
- Environmental Monitoring and Data Management
- Icing and De-icing Technologies
- Inertial Sensor and Navigation
- Calibration and Measurement Techniques
- Flood Risk Assessment and Management
- Hydrological Forecasting Using AI
- Climate variability and models
- Target Tracking and Data Fusion in Sensor Networks
- Ionosphere and magnetosphere dynamics
Barcelona Activa
2010-2023
Surrey Satellite Technology (United Kingdom)
2018-2019
Marie Curie
2018
Plymouth Marine Laboratory
2017
European Space Research and Technology Centre
1998-2009
Pildo Labs
2005
European Space Agency
2002-2003
Abstract. Sea level is one of the 50 Essential Climate Variables (ECVs) listed by Global Observing System (GCOS) in climate change monitoring. In past two decades, sea has been routinely measured from space using satellite altimetry techniques. order to address a number important scientific questions such as "Is rise accelerating?", "Can we close budget?", "What are causes regional and interannual variability?", already detect anthropogenic forcing signature separate it internal/natural...
Abstract. Ice losses from the Greenland and Antarctic ice sheets have accelerated since 1990s, accounting for a significant increase in global mean sea level. Here, we present new 29-year record of sheet mass balance 1992 to 2020 Sheet Mass Balance Inter-comparison Exercise (IMBIE). We compare combine 50 independent estimates derived satellite observations temporal changes flow, volume, Earth's gravity field. Between 2020, contributed 21.0±1.9 mm level, with rate loss rising 105 Gt yr−1...
Twelve years (1991-2003) of ERS-1 and ERS-2 altimetry data have been reprocessed within the European Space Agency (ESA) reprocessing altimeter products for ERS (REAPER) project using an updated, modern set algorithms auxiliary models. The (identified as RP01) has cross-calibrated against ENVISAT V2.1 data. format this is network common form (version 3). new shows a clear improvement in quality beyond that previous releases. product validation reduction mean standard deviation sea-surface...
Satellite altimeters have been used to monitor river and reservoir water levels, from which storage estimates can be derived. Inland altimetry can, therefore, play an important role in continental resource management. Traditionally, satellite were designed homogeneous surfaces such as oceans or ice sheets, resulting poor performance over small inland bodies due the contribution land contamination returned waveforms. The advent of synthetic aperture radar (SAR) (with its improved along-track...
The Sentinel-3 Mission Performance Centre (S3MPC) is tasked by the European Space Agency (ESA) to monitor health of Copernicus satellites and ensure a high data quality users. This paper deals exclusively with effort devoted altimeter microwave radiometer, both components Surface Topography (STM). altimeters on Sentinel-3A -3B are first operate in delay-Doppler or SAR mode over all Earth surfaces, which enables better spatial resolution signal along-track direction improved noise reduction...
Abstract In daily operations related to farming, watering stands out as crucial yet labour-intensive task regardless of weather conditions. The traditional way crops involves manual irrigation, which poses challenges such inefficiency, labour intensity, and uneven water distribution that often results in overwatering some areas leading potential crop yield losses. It requires two important aspects: when how much water. With that, this project study aimed provide an alternative irrigating...
The EnviSat satellite embarks an innovative radar altimeter, the RA-2 which represents a new generation of altimeters compared to previous instruments such as European Remote Sensing Satellite (ERS) and Ocean Topography Experiment/Poseidon. This is due its integration many features. In particular, first altimeter incorporate autonomous resolution selection model-free tracker. behavior instrument in orbit controlled by onboard algorithms determine logic, list parameters control when switches...
Abstract. Sea level is one of the 50 Essential Climate Variables (ECVs) listed by Global Observing System (GCOS) in climate change monitoring. In last two decades, sea has been routinely measured from space using satellite altimetry techniques. order to address a number important scientific questions such as: "Is rise accelerating?", "Can we close budget?", "What are causes regional and interannual variability?", already detect anthropogenic forcing signature separate it internal/natural...
Abstract. The launch of Sentinel-3A in February 2016 represented the beginning a new long-term series operational satellite radar altimeters, which will provide Delay-Doppler altimetry measurements over ice sheets for decades to come. Given potential benefits that these satellites can offer range glaciological applications, it is important establish their capacity monitor sheet elevation and change. Here, we present first analysis Sentinel-3 Antarctic sheet, assess accuracy precision...
Abstract The Poseidon-3 altimeter on board Jason-2 includes a significant new capability with respect to its predecessors, an open-loop [Détermination Immédiate d’Orbite par Doris Embarqué (DIODE)/digital elevation model (DEM)] tracker mode. This innovative mode is capable of successfully tracking the backscatter signal over rapidly varying terrains, and thus it overcomes one limitations closed-loop Poseidon-2 Jason-1 . DIODE/DEM achieves this improvement thanks predetermined DEM that, when...
A new method of forming the synthetic aperture radar altimeter multilook backscattered power waveform is proposed for application over water. The compensates both variations in amplitude and dilation range, which are caused by geometry observation signal processing chain instrument. Using Cryosat data collected Pacific Ocean Black Sea, used to retrack geophysical parameters sea surface height significant wave height, noise level these retracked compared with levels conventionally parameters....
The Altimetry mission on EnviSat will extend the time series of observations started by ERS-1. new features RA2 improve quality measurements in many aspects. on-board algorithms for tracking surface, larger range window and extra low resolution mode all data acquisition over important ice sheet margins most land wetland surfaces. New, in-situ ionospheric corrections from dual radar frequency be a significant improvement model-based used previous missions. more precise DORIS orbit precision...
As far as Ku band is concerned, the backscatter coefficient (sigma naught) of radar altimeter (RA-2) aboard ENVISAT satellite has been calibrated using a transponder (TPD) developed at ESA/ESTEC. The exploited during 6 month Commissioning Phase to generate early calibration results. In order consolidate this results and check lifetime, continuous monitoring was performed by operating much possible. first campaign dates back February 24 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Sentinel-3A, launched in February 2016, is part of ESA's long-term commitment to climate monitoring from space. Its suite instruments for measuring surface topography includes a Microwave Radiometer (MWR) and SRAL, the first delay-Doppler instrument provide global coverage. SRAL promises fine spatial resolution reduced noise levels that should together lead improved performance over all Earth surfaces. The Sentinel-3 Mission Performance Centre (S3MPC) has been developing methodology evaluate...
The EnviSat-1 satellite embarks an innovative radar altimeter, the RA-2, which represents a new generation of altimeters compared earlier ERS and TOPEX/Poseidon. This is due to its use many advanced features such as autonomous resolution selection robust "model free" tracker ability telemeter individual echo samples. EnviSat also radiometer, MWR provides altimeter with tropospheric correction. Before measurements from RA-2 are exploited instrument data processing system will be commissioned...