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T. Georgiadis

Consiglio Nazionale delle Ricerche (CNR), Institute of Biomereorology - IBIMET, Primo ricercatore

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Laurea in Physics, Laurea in Astronomy, Laurea Magistralis in Landscape Planning , Laurea in civil and environemtal EngineeringSenior Scientist

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Papers by T. Georgiadis

Spectral curves of surface reflectance in some Antarctic regions

by S. Salvi, T. Georgiadis, R. Casacchia, and R. Savatori R . Salvatori

Il Nuovo Cimento C, 2001

ABSTRACT Four surface reflectance models of solar radiation were determined by examining several ... more ABSTRACT Four surface reflectance models of solar radiation were determined by examining several sets of field measurements taken for clear-sky conditions at various sites in Antarctica. Each model consists of the mean spectral curve of surface reflectance in the 0.25-2.7 μm wavelength range and of the dependence curve of total albedo on the solar elevation angle h, within the range from 5° to 55°. The TNB (Terra Nova Bay) model refers to a rocky terrain where granites are predominant; the NIS (Nansen Ice Sheet) model to a glacier surface made uneven by sastrugi and streaked by irregular fractures; the HAP (High Altitude Plateau) model to a flat ice surface covered by fresh snow and scored by light sastrugi; and the RIS (Ross Ice Shelf) model to an area covered by the sea ice pack presenting many discontinuities in the reflectance features, due to melt water lakes, puddles, refrozen ice and snow pots. The reflectance curve obtained for the TNB model presents gradually increasing values as wavelength increases through the visible spectral range and almost constant values at infrared wavelengths, giving a total albedo value equal to 0.264 at h = 30°, which increases by about 80% through the lower range of h and decreases by 12% through the upper range. The reflectance curves of the NIS, HAP and RIS models are all peaked at visible wavelengths and exhibit decreasing values throughout the infrared spectral range, giving values of total albedo equal to 0.464, 0.738 and 0.426 at h = 30°, respectively. These values were estimated to increase by 8-14% as h decreases from 30° to 5° and to decrease by 2-4% only as h increases from 30° to 55°. © Società Italiana di Fisica.

Preliminary analysis of surface radiation measurements recorded at the Nansen ice sheet (Antarctica)

Il Nuovo Cimento C, 1996

Summary An experiment on radiation and surface energy balance was conducted during the 9th Itali... more Summary An experiment on radiation and surface energy balance was conducted during the 9th Italian expedition in Antarctica at the Nansen ice sheet, a glacier situated close to the Italian base at Terra Nova Bay, to correlate surface balances to the formation and development of katabatic winds. Measurements were taken by radiometers covering the whole spectra of solar and terrestrial emissions

MICROMETEOROLOGICAL AND SAP FLOW MEASUREMENT OF WATER VAPOUR EXCHANGES IN OLIVE: SCALING UP FROM CANOPY TO ORCHARD

VII International Workshop on Sap Flow, 2009

ORCHARD-ATMOSPHERE PHYSICAL EXCHANGES: MODELLING THE THERMAL CANOPY REGIME FOR THE DETERMINATION OF SENSIBLE AND LATENT HEAT FLUXES

IV International Symposium on Computer Modelling in Fruit Research and Orchard Management, 1996

Quale ruolo per l’arboricoltura da legno italiana nel protocollo di Kyoto? Indicazioni da una "Kyoto forest" della pianura emiliana

Forest@ - Rivista di Selvicoltura ed Ecologia Forestale, 2005

A NEW VISIBILITY METER

A NEW ROAD VISIBILITY METER PROTOTYPE FOR THE DRIVE/CROW PROJECT

Combined satellite and radar image processing in meteorological Nowcasting

RADIATION AND SURFACE FLUXES MEASUREMENTS AT TERRA NOVA BAY (ANTARCTICA)

Meteorological variables and ozone concentration measured in the surface layer at the Italian Station of Terra Nova Bay, Antarctica

Vertical evolution of photochemical ozone over greater Ravenna

ABSTRACT

Exploring the use of displaced beam scintillometer for daytime measurement of surface energy fluxes over a Mediterranean Olive Orchard

CLOUD COVER CLASSIFICATION THROUGH GROUND-BASED MEASUREMENTS OF SOLAR RADIATION

9C. 6 SCAVENGING OF AIR POLLUTANTS DURING PRECIPITATIVE EVENTS AT A NATURAL COASTAL ECOSYSTEM

by T. Georgiadis and Marianna Nardino

SURFACE ENERGY AND RADIATION BALANCES IN THE KONGSFJORDEN AREA

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

EFFECTS OF CLOUD FORCING ON SURFACE RADIATIVE FLUXES AT NY-ÅLESUND (SVALBARD) DURING ARTIST EXPERIMENT

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

Polar Atmospheres

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

SURFACE MEASUREMENTS DURING MAP-SOP: ENERGY AND RADIATION FLUXES IN RONDISSONE (LAGO MAGGIORE TARGET AREA)

by Vincenzo Levizzani, T. Georgiadis, and Marianna Nardino

Parameterization of shortwave, longwave and net radiation fluxes over the Hells Gate ice shelf (Antarctica)

by T. Georgiadis, Silvia Ferrarese, and Marianna Nardino

Recent results from the Arctic Radiation and Turbulence Interaction STudy (ARTIST) project

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

Spectral curves of surface reflectance in some Antarctic regions

by S. Salvi, T. Georgiadis, R. Casacchia, and R. Savatori R . Salvatori

Il Nuovo Cimento C, 2001

ABSTRACT Four surface reflectance models of solar radiation were determined by examining several ... more ABSTRACT Four surface reflectance models of solar radiation were determined by examining several sets of field measurements taken for clear-sky conditions at various sites in Antarctica. Each model consists of the mean spectral curve of surface reflectance in the 0.25-2.7 μm wavelength range and of the dependence curve of total albedo on the solar elevation angle h, within the range from 5° to 55°. The TNB (Terra Nova Bay) model refers to a rocky terrain where granites are predominant; the NIS (Nansen Ice Sheet) model to a glacier surface made uneven by sastrugi and streaked by irregular fractures; the HAP (High Altitude Plateau) model to a flat ice surface covered by fresh snow and scored by light sastrugi; and the RIS (Ross Ice Shelf) model to an area covered by the sea ice pack presenting many discontinuities in the reflectance features, due to melt water lakes, puddles, refrozen ice and snow pots. The reflectance curve obtained for the TNB model presents gradually increasing values as wavelength increases through the visible spectral range and almost constant values at infrared wavelengths, giving a total albedo value equal to 0.264 at h = 30°, which increases by about 80% through the lower range of h and decreases by 12% through the upper range. The reflectance curves of the NIS, HAP and RIS models are all peaked at visible wavelengths and exhibit decreasing values throughout the infrared spectral range, giving values of total albedo equal to 0.464, 0.738 and 0.426 at h = 30°, respectively. These values were estimated to increase by 8-14% as h decreases from 30° to 5° and to decrease by 2-4% only as h increases from 30° to 55°. © Società Italiana di Fisica.

Preliminary analysis of surface radiation measurements recorded at the Nansen ice sheet (Antarctica)

Il Nuovo Cimento C, 1996

Summary An experiment on radiation and surface energy balance was conducted during the 9th Itali... more Summary An experiment on radiation and surface energy balance was conducted during the 9th Italian expedition in Antarctica at the Nansen ice sheet, a glacier situated close to the Italian base at Terra Nova Bay, to correlate surface balances to the formation and development of katabatic winds. Measurements were taken by radiometers covering the whole spectra of solar and terrestrial emissions

MICROMETEOROLOGICAL AND SAP FLOW MEASUREMENT OF WATER VAPOUR EXCHANGES IN OLIVE: SCALING UP FROM CANOPY TO ORCHARD

VII International Workshop on Sap Flow, 2009

ORCHARD-ATMOSPHERE PHYSICAL EXCHANGES: MODELLING THE THERMAL CANOPY REGIME FOR THE DETERMINATION OF SENSIBLE AND LATENT HEAT FLUXES

IV International Symposium on Computer Modelling in Fruit Research and Orchard Management, 1996

Quale ruolo per l’arboricoltura da legno italiana nel protocollo di Kyoto? Indicazioni da una "Kyoto forest" della pianura emiliana

Forest@ - Rivista di Selvicoltura ed Ecologia Forestale, 2005

A NEW VISIBILITY METER

A NEW ROAD VISIBILITY METER PROTOTYPE FOR THE DRIVE/CROW PROJECT

Combined satellite and radar image processing in meteorological Nowcasting

RADIATION AND SURFACE FLUXES MEASUREMENTS AT TERRA NOVA BAY (ANTARCTICA)

Meteorological variables and ozone concentration measured in the surface layer at the Italian Station of Terra Nova Bay, Antarctica

Vertical evolution of photochemical ozone over greater Ravenna

ABSTRACT

Exploring the use of displaced beam scintillometer for daytime measurement of surface energy fluxes over a Mediterranean Olive Orchard

CLOUD COVER CLASSIFICATION THROUGH GROUND-BASED MEASUREMENTS OF SOLAR RADIATION

9C. 6 SCAVENGING OF AIR POLLUTANTS DURING PRECIPITATIVE EVENTS AT A NATURAL COASTAL ECOSYSTEM

by T. Georgiadis and Marianna Nardino

SURFACE ENERGY AND RADIATION BALANCES IN THE KONGSFJORDEN AREA

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

EFFECTS OF CLOUD FORCING ON SURFACE RADIATIVE FLUXES AT NY-ÅLESUND (SVALBARD) DURING ARTIST EXPERIMENT

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

Polar Atmospheres

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino

SURFACE MEASUREMENTS DURING MAP-SOP: ENERGY AND RADIATION FLUXES IN RONDISSONE (LAGO MAGGIORE TARGET AREA)

by Vincenzo Levizzani, T. Georgiadis, and Marianna Nardino

Parameterization of shortwave, longwave and net radiation fluxes over the Hells Gate ice shelf (Antarctica)

by T. Georgiadis, Silvia Ferrarese, and Marianna Nardino

Recent results from the Arctic Radiation and Turbulence Interaction STudy (ARTIST) project

by T. Georgiadis, Vincenzo Levizzani, and Marianna Nardino