![]() ![]() Radiation Explorer in the Far InfraRed - Prototype for Applications and Developments |
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REFIR-PAD results and available data
Measurements of the spectrum of DLR (Downward Longwave Radiation) were performed from ground at high-altitude sides and of OLR (Outgoing Longwave Radiation) from stratospheric balloon. Table here below reports available data.![]() REFIR-PAD at Concordia Station 75°S 123°E - Dome-C - Antarctica![]()
Contact:
Luca Palchetti luca.palchetti@ino.it, Giovanni Bianchini giovanni.bianchini@ino.it The instrument was installed at Concordia Station in December 2011, and since then, it has been performing automatic measurements all over the year with cycles of 5-6 hours of sky measurements and 1.5-3 hours of preliminary data analysis, whose results are sent to Italy in near real time, see plots below. REFIR-PAD is operated under different projects supported by the Italian Programma Nazionale di Ricerche in Antartide (PNRA.). PRANA - Radiative Properties of Atmospheric Water vapour and clouds in Antarctica
The main objective of the PRANA (Proprieta' Radiative del vapore Acqueo e delle nubi in Antartide - Radiative Properties of Atmospheric Water vapour and clouds in Antarctica) research project is the monitoring and the spectral characterisation of the downwelling longwave radiation (DLR) from 100 to 1400 cm-1 emitted by the atmosphere in different sky conditions. This measurement will allow to improve the knowledge in the under-explored far infrared (FIR) spectral region of the emission spectrum from 100 to 400 cm-1. In particular, the modelling of the pure rotational water vapour band and the radiative properties of high altitude ice clouds, such as cirrus and polar stratospheric clouds (PSC), will be studied in depth. As the modelling capabilities is validated, the measurement can be used for the estimation of the total precipitable water vapour content (PWV) and the PSC coverage. CoMPASs - Concordia Multi-Process Atmospheric Studies
The CoMPASs project has been developed in order to identify and characterize these feedbacks and interactions between processes, spanning across three different atmospheric regions: the boundary layer, the troposphere and the stratosphere. The main research themes follow the vertical structure of the atmosphere: STRRAP-b - STudy of the Radiative Regimes over the Antarctic Plateau and beyond The project aims to deepen the knowledge on the Antarctic Plateau radiative regime and its regulating processes, through in situ radiometric measurements coupled with remote sensing techniques, using broadband and hyperspectral instrumentation. Specifically, the project aims to define accurately the effects of cloud cover, ozone and water vapor, and surface reflectance properties on the radiative balance over the East antarctic Plateau. For the different conditions of cloud coverage, the downwelling and upwelling solar radiation will be spectrally and geometrically characterized. Information provided by the BSRN station and new instrument implementations will be exploited to calibrate/validate satellite retrieval products related to the surface reflectivity, and provide validated measures of the components of solar and infrared irradiance incident and reflected by the surface. The use of satellite information properly configured over the Antarctic in conjunction with the data provided by the other three BSRN stations operated in Antarctica (SPO, SYO, GVN), will allow researchers to expand definitions of the radiative regimes to a regional scale and possibly up along the coast. Atmospheric corrections will be taken into account by ground based remote sensing of columnar ozone, measurements of UV spectral radiation, while water vapor will be measured by various platforms including radiosonde, REFIR-PAD IR radiometer and HAMSTRAD MW radiometer. REFIR-PAD products REFIR-PAD supplies the following products:
Expected uncertainties are for Brightness temperature error about 0.1K (@ 280K),and for PWV about 5%. Real-time data from REFIR-PAD and auxiliary instruments at the Physics shelter
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