The Satellite Oceanography Group (GOS) of Rome developed a system that provides satellite ocean c... more The Satellite Oceanography Group (GOS) of Rome developed a system that provides satellite ocean colour images and data on the web. This meets the growing demand for near real-time ocean colour products for applications in operational oceanography. The system has been developed to produce: 1) fast delivery images for monitoring applications and operational support on oceanographic cruises; 2) accurate ocean colour products for data assimilation on ecosystem model. Real Time Images of SeaWiFS chlorophyll concentration, clouds/case I/case II water flags and true color images are obtained by processing the satellite passes using climatological ancillary data. These images are provided daily through an ad hoc automatic procedure that processes the raw satellite data and makes it available on the web within an hour after the acquisition. All the images are stored in a gallery archive organized in a calendar chart for the selection of the images to display. On the opposite, accurate chloro...
In this study we analyse thermal satellite images relative to years 1997-2000, to infer cold fila... more In this study we analyse thermal satellite images relative to years 1997-2000, to infer cold filaments and surface jets dynamics in the Mediterranean Sea. The main zones in which these phenomena are seen to occur are characterised by upwelling and/or the funnelling of strong cold winds by somewhat irregular coastal topography. Indeed, intense air-sea interaction in the coastal zone are known to generate a particularly strong input of potential vorticity into marine water, and this in turn gives origin to upwellings, cold filaments and jets. In the Mediterranean Sea, the geographical zones more "rich" in these jets are the two lobes of the southern Sicilian coast, the sea off Olbia in Sardinia, that South of the island of Crete, where a particularly intense large scale turbulence field is evident, and the Balkanic coast of the Adriatic sea. In addition, the theoretical analysis of these jets' evolution using a modern version of the potential vorticity conservation, valid even if friction and entrainment are to be considered , gives some insight into these systems' dynamics.
In the framework of the ASI PRIMI Project, CNR-ISAC, in collaboration with the PRIMI partners, or... more In the framework of the ASI PRIMI Project, CNR-ISAC, in collaboration with the PRIMI partners, organized a validation cruise for the PRIMI oil spill monitoring and forecasting system on board the CNR R/V Urania. The cruise (Aug. 6 \u2013 Sept. 7 2009) took place in the Sicily Strait, an area affected by large oil tanker traffic. The cruise plan was organized in order to have the ship within the selected SAR image frames at acquisition time so that the ship could move toward the oil slick and verify it via visual and instrumental inspection. During the cruise, several oil spills, presumably being the result of illegal tank washing, were detected by the PRIMI system and were verified in situ. Preliminary results indicate that SAR and optical satellites are able to detect heavy and thin film oil spills, the maturity of oil spill forecasting models and that further work combining satellite, model and in situ data is necessary to assess the spill severity from the signature in satellite imagery
Abstract This note describes a cold patch observable by thermal satellite imagery in the Strait o... more Abstract This note describes a cold patch observable by thermal satellite imagery in the Strait of Messina and along the eastern Sicilian shelf. The phenomenon is particularly marked and perists all year long, excluding winter. This patch has been investigated by means of both thermal imagery and field observations. As a result, the region near the Sill of the Strait of Messina has been found to consist of peculiar marine water generated by the tidal mixing of surface and deep layers of Atlantic water with Levantine water. This marine water has a flux of 0.1 Sv and flows southward for ~ 100 Km along the Sicilian shelf.
ABSTRACT The Bora wind event occurred in winter 2012 was exceptional in terms of both meteorologi... more ABSTRACT The Bora wind event occurred in winter 2012 was exceptional in terms of both meteorological effects and impact on the Adriatic Sea circulation. It was associated with intense and persistent winds, very cold temperatures all over the Mediterranean basin and heavy snowfall over the Apennines slopes exposed to north-easterly winds, and it was responsible for triggering dense water formation and driving basin-scale oceanic circulation. The cooling period (29 January - 13 February) was characterized by intense air-sea exchanges of momentum and heat, whose accurate simulation is required for a proper description of atmospheric and ocean circulations.
Operational oceanography requires availability of remotely sensed data, for example sea surface t... more Operational oceanography requires availability of remotely sensed data, for example sea surface temperature (SST), in near realtime (NRT). A system is presented that makes use of a combination of state of the art NASA Pathfinder SST (PFSST) algorithm and cloud detection procedures both adapted to operate in NRT. A novel cloud detection algorithm that makes use of a reference image
ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. I... more ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. Includes vita.
A novel method of automated georeferencing of NOAA/AVHRR imagery is used in conjunction with Univ... more A novel method of automated georeferencing of NOAA/AVHRR imagery is used in conjunction with University of Miami Pathfinder SST (based upon coefficients of the previous year) to generate accurately declouded high precision (0.3 °C) SST`s suitable for assimilation into forecasting models of the Mediterranean circulation. Georeferencing is carried out in few minutes based upon the information present in the single
ABSTRACT Typescript. Thesis (M.S.)--University of Rhode Island, 1988. Includes bibliographical re... more ABSTRACT Typescript. Thesis (M.S.)--University of Rhode Island, 1988. Includes bibliographical references (leaves 27-30).
ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. I... more ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. Includes vita.
The Satellite Oceanography Group (GOS) of Rome developed a system that provides satellite ocean c... more The Satellite Oceanography Group (GOS) of Rome developed a system that provides satellite ocean colour images and data on the web. This meets the growing demand for near real-time ocean colour products for applications in operational oceanography. The system has been developed to produce: 1) fast delivery images for monitoring applications and operational support on oceanographic cruises; 2) accurate ocean colour products for data assimilation on ecosystem model. Real Time Images of SeaWiFS chlorophyll concentration, clouds/case I/case II water flags and true color images are obtained by processing the satellite passes using climatological ancillary data. These images are provided daily through an ad hoc automatic procedure that processes the raw satellite data and makes it available on the web within an hour after the acquisition. All the images are stored in a gallery archive organized in a calendar chart for the selection of the images to display. On the opposite, accurate chloro...
In this study we analyse thermal satellite images relative to years 1997-2000, to infer cold fila... more In this study we analyse thermal satellite images relative to years 1997-2000, to infer cold filaments and surface jets dynamics in the Mediterranean Sea. The main zones in which these phenomena are seen to occur are characterised by upwelling and/or the funnelling of strong cold winds by somewhat irregular coastal topography. Indeed, intense air-sea interaction in the coastal zone are known to generate a particularly strong input of potential vorticity into marine water, and this in turn gives origin to upwellings, cold filaments and jets. In the Mediterranean Sea, the geographical zones more "rich" in these jets are the two lobes of the southern Sicilian coast, the sea off Olbia in Sardinia, that South of the island of Crete, where a particularly intense large scale turbulence field is evident, and the Balkanic coast of the Adriatic sea. In addition, the theoretical analysis of these jets' evolution using a modern version of the potential vorticity conservation, valid even if friction and entrainment are to be considered , gives some insight into these systems' dynamics.
In the framework of the ASI PRIMI Project, CNR-ISAC, in collaboration with the PRIMI partners, or... more In the framework of the ASI PRIMI Project, CNR-ISAC, in collaboration with the PRIMI partners, organized a validation cruise for the PRIMI oil spill monitoring and forecasting system on board the CNR R/V Urania. The cruise (Aug. 6 \u2013 Sept. 7 2009) took place in the Sicily Strait, an area affected by large oil tanker traffic. The cruise plan was organized in order to have the ship within the selected SAR image frames at acquisition time so that the ship could move toward the oil slick and verify it via visual and instrumental inspection. During the cruise, several oil spills, presumably being the result of illegal tank washing, were detected by the PRIMI system and were verified in situ. Preliminary results indicate that SAR and optical satellites are able to detect heavy and thin film oil spills, the maturity of oil spill forecasting models and that further work combining satellite, model and in situ data is necessary to assess the spill severity from the signature in satellite imagery
Abstract This note describes a cold patch observable by thermal satellite imagery in the Strait o... more Abstract This note describes a cold patch observable by thermal satellite imagery in the Strait of Messina and along the eastern Sicilian shelf. The phenomenon is particularly marked and perists all year long, excluding winter. This patch has been investigated by means of both thermal imagery and field observations. As a result, the region near the Sill of the Strait of Messina has been found to consist of peculiar marine water generated by the tidal mixing of surface and deep layers of Atlantic water with Levantine water. This marine water has a flux of 0.1 Sv and flows southward for ~ 100 Km along the Sicilian shelf.
ABSTRACT The Bora wind event occurred in winter 2012 was exceptional in terms of both meteorologi... more ABSTRACT The Bora wind event occurred in winter 2012 was exceptional in terms of both meteorological effects and impact on the Adriatic Sea circulation. It was associated with intense and persistent winds, very cold temperatures all over the Mediterranean basin and heavy snowfall over the Apennines slopes exposed to north-easterly winds, and it was responsible for triggering dense water formation and driving basin-scale oceanic circulation. The cooling period (29 January - 13 February) was characterized by intense air-sea exchanges of momentum and heat, whose accurate simulation is required for a proper description of atmospheric and ocean circulations.
Operational oceanography requires availability of remotely sensed data, for example sea surface t... more Operational oceanography requires availability of remotely sensed data, for example sea surface temperature (SST), in near realtime (NRT). A system is presented that makes use of a combination of state of the art NASA Pathfinder SST (PFSST) algorithm and cloud detection procedures both adapted to operate in NRT. A novel cloud detection algorithm that makes use of a reference image
ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. I... more ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. Includes vita.
A novel method of automated georeferencing of NOAA/AVHRR imagery is used in conjunction with Univ... more A novel method of automated georeferencing of NOAA/AVHRR imagery is used in conjunction with University of Miami Pathfinder SST (based upon coefficients of the previous year) to generate accurately declouded high precision (0.3 °C) SST`s suitable for assimilation into forecasting models of the Mediterranean circulation. Georeferencing is carried out in few minutes based upon the information present in the single
ABSTRACT Typescript. Thesis (M.S.)--University of Rhode Island, 1988. Includes bibliographical re... more ABSTRACT Typescript. Thesis (M.S.)--University of Rhode Island, 1988. Includes bibliographical references (leaves 27-30).
ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. I... more ABSTRACT Thesis (Ph. D.)--North Carolina State University. Includes bibliographical references. Includes vita.
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