Dr. Maria Joao T. Costa Profile

Dr. Maria Joao T. Costa

at Biosurfit SA

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 17 October 2013 Paper

Monitoring of nitrogen dioxide, ozone and halogens radicals in Antarctica

Daniele Bortoli, Fabrizio Ravegnani, Maria Costa, Silvia Genco, Pavan Kulkarni, Rui Mendes, Ana Filipa Domingues, Manuel Anton, Giorgio Giovanelli, Ana Maria Silva

Proceedings Volume 8890, 889005 (2013) https://doi.org/10.1117/12.2029277

KEYWORDS: NOx, Satellites, Ozone, Spectroscopy, Phase modulation, Atmospheric monitoring, Absorption, Statistical analysis, Atmospheric optics, Halogens

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Proceedings Article | 29 September 2009 Paper

Cloud detection and classification from multi-spectral satellite data

Maria João Costa, Daniele Bortoli

Proceedings Volume 7475, 747514 (2009) https://doi.org/10.1117/12.830220

KEYWORDS: Clouds, RGB color model, Composites, Satellites, Infrared imaging, MODIS, Satellite imaging, Remote sensing, Reflectivity, Crystals

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Proceedings Article | 29 September 2009 Paper

Comparison of cloud height and depth from atmospheric modelling and ceilometer measurements

D. Santos, M. Costa, A. Silva, R. Salgado, D. Bortoli

Proceedings Volume 7475, 747512 (2009) https://doi.org/10.1117/12.830463

KEYWORDS: Clouds, Atmospheric modeling, Backscatter, Semiconductor lasers, Geophysics, Atmospheric sciences, Climatology, Solar radiation models, Modeling, Error analysis

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Proceedings Article | 25 September 2009 Paper

Observations of tropospheric compounds at Evora station with multi-axis hyperspectral measurements

D. Bortoli, S. Masieri, A. Domingues, M. Costa, A. Silva, M. Anton, E. Palazzi

Proceedings Volume 7475, 74751K (2009) https://doi.org/10.1117/12.830104

KEYWORDS: NOx, Single crystal X-ray diffraction, Molecules, Ozone, Troposphere, Spectroscopy, Atmospheric optics, Optical fibers, Gases, Nitrous oxide

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Proceedings Article | 23 February 2009 Paper

Antibody fragment recognition layers for surface plasmon resonance biosensing: a parametric study

André Magalhães, Sandro Bordeira, Ana Cristina Almeida, Vanessa Fontes, Maria João Costa, Luís Fonseca, João Garcia da Fonseca

Proceedings Volume 7169, 716903 (2009) https://doi.org/10.1117/12.808820

KEYWORDS: Biosensors, Coating, Prisms, Adsorption, Resistance, Calibration, Gold, Surface plasmons, Proteins, Blood

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Proceedings Article | 13 October 2008 Paper

Cloud microphysical characterization in the presence of a desert dust event over Portugal: a study based on atmospheric modeling and satellite remote sensing

D. Santos, M. Costa, A. Silva, R. Salgado

Proceedings Volume 7107, 710714 (2008) https://doi.org/10.1117/12.800336

KEYWORDS: Clouds, Aerosols, Atmospheric modeling, Atmospheric particles, Satellites, Liquids, Remote sensing, Data modeling, Shortwaves, Water

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Proceedings Article | 30 October 2007 Paper

Analysis of the measurements taken by a ceilometer installed in the south of Portugal

M. J. Costa, D. Bortoli, S. Pereira, A. Silva, F. Wagner, N. Belo, J. Guerrero-Rascado, F. Navas-Guzman, L. Alados-Arboledas

Proceedings Volume 6745, 674523 (2007) https://doi.org/10.1117/12.738096

KEYWORDS: Backscatter, Aerosols, Atmospheric particles, LIDAR, Humidity, Observatories, Pollution, Clouds, Particles, Geophysics

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Proceedings Article | 30 October 2007 Paper

Satellite estimated cloud radiative forcing in the presence of aerosol events over the south of Portugal

Dina Santos, Maria João Costa, Daniele Bortoli, Ana Maria Silva

Proceedings Volume 6745, 674522 (2007) https://doi.org/10.1117/12.737951

KEYWORDS: Clouds, Aerosols, Atmospheric particles, Atmospheric optics, Satellites, MODIS, Ocean optics, Radiative transfer, Liquids, Shortwaves

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Proceedings Article | 1 November 2005 Paper

Aerosol radiative forcing from GEO satellite data over land surfaces

Maria Costa, Ana Silva

Proceedings Volume 5979, 597921 (2005) https://doi.org/10.1117/12.627646

KEYWORDS: Aerosols, Ocean optics, Satellites, Atmospheric particles, Atmospheric corrections, Clouds, Atmospheric optics, Atmospheric monitoring, Sensors, Satellite imaging

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Aerosols direct and indirect effects on the Earth's climate are widely recognized but have yet to be adequately quantified. Difficulties arise due to the very high spatial and temporal variability of aerosols, which is a major cause of uncertainties in radiative forcing studies. The effective monitoring of the global aerosol distribution is only made possible by satellite monitoring and this is the reason why the interest in aerosol observations from satellite passive radiometers is steadily increasing. From the point of view of the study of land surfaces, the atmosphere with its constituents represents an obscurant whose effects should be as much as possible eliminated, being this process sometimes referred to as atmospheric correction. In absence of clouds and using spectral intervals where gas absorption can be avoided to a great extent, only the aerosol effect remains to be corrected. The monitoring of the aerosol particles present in the atmosphere is then crucial to succeed in doing an accurate atmospheric correction, otherwise the surface properties may be inadequately characterised. However, the atmospheric correction over land surfaces turns out to be a difficult task since surface reflection competes with the atmospheric component of the signal. On the other hand, a single mean pre-established aerosol characterisation would not be sufficient for this purpose due to very high spatial and temporal variability of aerosols and their unpredictability, especially what concerns particulary intense "events" such as biomass burning and forest fires, desert dust episodes and volcanic eruptions. In this context, an operational methodology has been developed at the University of Evora - Evora Geophysics Centre (CGE), in the framework of the Satellite Application Facility for Land Surface Analysis - Land SAF, to derive an Aerosol Product from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) data, flying on the Geostationary (GEO) satellite system Meteosat-8. The aerosol characterization obtained is used to calculate the fluxes and estimate the aerosol radiative forcing at the top of the atmosphere. The methodology along with the results of the aerosol properties and radiative forcing using SEVIRI images is presented. The aerosol optical thickness results are compared with ground-based measurements from the Aerosol Robotic NETwork (AERONET), to assess the accuracy of the methodology presented.

Proceedings Article | 18 April 2003 Paper

Stratospheric nitrogen dioxide in Antarctic regions from ground based and satellite observations during 2001

Daniele Bortoli, Giorgio Giovanelli, Fabrizio Ravegnani, Ivan Kostadinov, Andrea Petritoli, Francescopiero Calzolari, Maria Costa, Ana Silva

Proceedings Volume 4882, (2003) https://doi.org/10.1117/12.462602

KEYWORDS: Ozone, Virtual colonoscopy, NOx, Stratosphere, Spectroscopy, Satellites, Nitrogen, Clouds, Phase modulation, Earth observing sensors

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Proceedings Article | 18 April 2003 Paper

Aerosol radiative forcing assessment from polar and geostationary satellite measurements

Maria Costa, Ana Silva, Vincenzo Levizzani

Proceedings Volume 4882, (2003) https://doi.org/10.1117/12.462590

KEYWORDS: Aerosols, Ocean optics, Satellites, Combustion, Atmospheric particles, Clouds, Optical properties, MODIS, Atmospheric modeling, Data modeling

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Proceedings Article | 30 January 2002 Paper

Lessons learned from synergistic use of polar and geostationary satellite sensors for the retrieval of aerosol characteristics

Maria Costa, Marco Cervino, Elsa Cattani, Francesca Torricella, Vincenzo Levizzani, Anna Maria Silva

Proceedings Volume 4485, (2002) https://doi.org/10.1117/12.454271

KEYWORDS: Aerosols, Satellites, Atmospheric particles, Ocean optics, Sensors, Optical properties, Refractive index, Scattering, Atmospheric modeling, Spatial resolution

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Proceedings Article | 8 December 1999 Paper

Aerosol optical thickness and classification: use of METEOSAT, GOME, and modeled data

Maria Costa, Marco Cervino, Elsa Cattani, Francesca Torricella, Vincenzo Levizzani, Anna Maria Silva

Proceedings Volume 3867, (1999) https://doi.org/10.1117/12.373059

KEYWORDS: Aerosols, Atmospheric particles, Scattering, Ocean optics, Refractive index, Clouds, Optical properties, Reflectivity, Atmospheric modeling, Spectral resolution

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Showing 5 of 13 publications

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