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INGV operates in the Arctic region with observational activities in Svalbard, near the area of Ny-Ålesund, where the Institute has installed three stations to monitor ionospheric scintillation, currently in operation. In Svalbard, the PEGASO (Polar Explorer for Geomagnetic And other Scientific Observations) project has performed several stratospheric balloon launches (Pathfinders) with the aim of studying the Earth's magnetic field in an area with poor coverage measurements and of studying the possible trajectories of circumpolar winds at high altitudes. At the Greenland Base of Thule, INGV in collaboration with CNR, DMI (Danish Meteorological Institute), University of Rome La Sapienza and ENEA, carries out spectrometric observations for the analysis of stratospheric chemistry and mesosphere to monitor the ozone layer. In cooperation with In addition, an upper atmosphere permanent observatory for magnetosphere and Ionosphere sounding, including Auroras, and other geophysical processes is operated in Greenland, Zackemberg station in cooperation with Danish scientists. INGV is currently involved in the coordination of two European initiatives: a) EMSO (European Multidisciplinary seafloor Observatory) a European research infrastructure of ESFRI (European Strategy Forum on Research Infrastructures), which counts to establish a multi-parametric permanent network in the surrounding European seas, including the Arctic area. The project began in April 2008 with the participation of 11 European countries; b) EUROANDRILL, created under the aegis of the European Science Foundation, aims to drill key areas of polar areas to study past and future climate. The project involves the involvement of 10 European and 3 extra-European countries. The Institute is also active in other projects in the Arctic, in particular actively participates in the seismic network GLISN, developed from the existing stations in and around Greenland.
Within the Unit for Environment and Energy Modeling (UTMEA), the Laboratory Earth Observations and Analyses within UTMEA (UTMEA-TER) carries out long-term observations of stratospheric chemistry and mesosphere in Greenland, Thule station. Stratospheric processes (evolution in atmospheric temperature, ozone depletion) and chemistry are monitored and investigated by stratospheric lidar as well as spectrometers, in strong cooperation with INGV and DMI. Since 1990 numerous measurement campaigns have been carried out, also on the international level (EASOE, SESAME, THESEO, ESMOS/Arctic. ENEA’s Diagnostics and Metrology Laboratory (UTAPRAD-DIM) has been participating in polar campaigns since the late 1990's. In particular, it has developed the laser spectrofluorimeter CASPER (patented) and prototypes of different lidar fluorosensor: for ships, underwater remotely operated vehicles and patented miniature Unmanned Aerial Vehicles. These instruments participated in 3 oceanographic cruises (2006, 2007 and 2008) at Svalbard, on board of the "Oceania" in the context of a collaboration with the Institute of Oceanology of the Polish Academy of Sciences. Their use is also envisaged under the Italian-Canadian CLIMAT (complementary use of lidar to improve bio-optical models derived from satellite system in the St. Lawrence).
Italy’s leading national research institution, the CNR has been supporting research activity at Ny-Ålesund since 1997, when the scientific station “Dirigibile Italia” was acquired. This infrastructure supports Arctic research conducted by the national research community. In 2008, it was improved through the construction of the Amundsen-Nobile Climate Change Tower and the actikvity largely enlarged with the Climate Change Tower Integrated Project (CCT-IP - www.isac.cnr.it/~radiclim/CCTower). Scientific cooperation, particularly focused on atmospheric science including pollutants distribution and ozone studies, on oceanography and on marine biology and biodiversity was developed by CNR scientists in particular with NPI and AWI; CNR is coordinating actions (EU-GMOS project) to improve and implement the observational system related to mercury. CNR is also involved in the SIOS preparatory phase project, and in Italy it is engaged to coordinate interested Italian expertises in a common scientific plan and actively promote Italian participation to SIOS final multidisciplinary platform. In the years to come, CNR intends to promote the improvement of research activity and to reinforce international cooperation of the Italian research groups, and to provide a significant contribution to the observational system in the Arctic, following the lines recommended by SAON. Together with the improvement/development of a supersite at Ny-Ålesund and large contribution to SIOS, CNR will operate to contribute/sustain thematic networks (Polar-AOD for aerosol and GMOS for mercury leading from CNR).
The polar ionosphere is sensible to the enhancement of the electromagnetic radiation and energetic particles coming from the Sun expecially around a maximum of solar activity . Some typical phenomena can occur such as, among the others, geomagnetic storms, sub-storms and ionospheric irregularities. In this frame the high latitude ionosphere may become highly turbulent showing the presence of small-scale (from centimetres to meters) structures or irregularities imbedded in the large-scale (tens of kilometers) ambient ionosphere. These irregularities produce short term phase and amplitude fluctuations in the carrier of the radio waves which pass through them. These effects are commonly called Amplitude and Phase Ionospheric Scintillations that can affect the reliability of GPS navigational systems and satellite communications. The goal of this proposal is to contribute to the understanding of the physical mechanisms responsible of the ionospheric scintillations as well as to data collecting for nowcasting/forecasting purposes at high latitude. As the scarceness of polar observations, the specific site near Ny-Ålesund is of particular experimental interest.
The central objectives of the proposed ATMAS project are: to quantify the photo-chemically triggered NOx and HONO re-emission fluxes from permanently and seasonally snow-covered surfaces in the Arctic near Ny-Ålesund, to quantify the sources of NO3 in these snow-covered surfaces. In detail, the following scientific objectives of ATMAS can be distinguished: 1. to quantify atmospheric gradient fluxes of HNO3, HONO, particulate nitrogen compounds, and nitrogen in precipitation (snow and rain) above snow surfaces; 2. to quantify the emission of NOx and HONO from the snow pack as atmospheric gradient fluxes 3. to formulate an influx-outflow relationship that can be used in dependence on the snow type for (photo-)chemical atmospheric process models. The results of this research may be expanded to a regional (European) or global scale, to suggest how the NOx and HONO re-emission process and its consequences can be included into regional emission, dispersion and deposition models used in Europe.
Observation of the high latitude auroral activity, during the winter season, by means of automatic all-sky camera(s). Study of the high-latitude auroral activity, focusing on the so-called “dayside auroras”: a particular phenomenon concerning the direct precipitation of the thermalised solar wind plasma through the geomagnetic cusps, favourably observable from the Svalbard. The analysis of the data, mainly devoted to the “dayside auroras”, will concern the comparison of the optical images obtained from both the station of Ny-Alesund and the new one of Daneborg (Greenland) with the data collected by Wind, ACE, DSMP, Polar, and Cluster satellites. Starting from the 2002 season, the joint auroral observations from Ny-Alesund and Daneborg allows the monitoring of a relevant area involved in the “dayside aurora” phenomena.
The min goals are: -to study the organic composition, trace gas and aerosols in environmental air; -to try to identify transport phenomena (i.e. from Europe), local degradation and removal processes; -to evaluate the effect of the organic compounds on the polar environment, toxic compounds or formed photochemical products in order to prevent and protect the climatology and their environment. Organic compounds determination is focused on two sampling field campaigns in the Arctic region, in the summer and in the winter corresponding at day conditions and night time.
The 2003 field activity will be mainly dedicated to coring activity which includes: 1. the sampling of snow and ice cores from a Ny-Ålesund nearby glacier (midre Lovenbreen). 2. the collection of near coast (Kongsfjorden) and lakes sediments (maximum under pack depth 30 m). Sampling collection of ice and sediment cores will be performed using a portable, electric operated, sampling corer. The transport of all materials up to each sampling station should be performed with snowcats.
One of the major benefits of performing measurements at Ny-Ålesund is the availability of a monitoring station on Mount Zeppelin, 474m asl. Given the typical height of the Arctic inversion layer during the envisaged measurement period, it will be possible to continuously monitor mercury and particulate in the free troposphere at the same time as performing ground level monitoring. The simultaneous measurements above and below the boundary layer should provide evidence for the mode of elemental Hg replenishment, whether it is from due to exchange with the free troposphere, or transport occurring at sea level. The proposed collaboration, by collecting data from two strategically placed Arctic stations, in the paths of different air masses and data from above the Arctic inversion layer would provide the most comprehensive set of Arctic mercury measurements performed to date.
Work program: Grab air samples will be collected in sampling sites not influenced by local emission sources for the determination of chlorofluorocarbons and of hydrogenated halocarbons. A 15 days sampling campaign is scheduled. Samples will be analysed in our Institution by using the analytical methodology here described and results obtained will be evaluated and compared with data obtained, by using the same analytical methodology, analysing air samples collected in other remote and semi remote sites. For the analysis of the hydrogenated halocarbon degradation products snow and water samples will be collected as well, according to the different season of the year. The collected samples will be then derivatized and analysed in our Institution for the evaluation of the presence of such compounds in remote areas.
The goal of this project is to find the relationships between the UV solar spectral irradiances sampled at ground level in different cloudy situations. This information will be useful for a double target: to a better tuning of the UV Green model outputs and to evaluate the effects of the solar UV radiation on biological target. A second target is to have information about the cloud effect on computing the Umkehr model output (vertical Ozone profiles). This goal will be carried out installing in Ny-Ålesund a spectrophotometer Brewer to sample the UV irradiance synchronous with an automatic photo-camera taking pictures of sky. An analytical study of the two kinds of data allows finding the relationships searched.
Specific objectives of the proposal are: 1. the determination of the cloud coverage by means of a simple methodology based on radiometric measurements; 2. the determination of the radiative forcing produced by different type of cloud and coverage for applications into GCM’s as ‘cloud parameterisations’. The results will be obtained for two different radiative regimes by means of different experimental campaigns.
The general objective of this research concerns the quantitative and qualitative study of particulate matter retained in natural (sea-ice and sediment) and artificial (sediment traps) traps in order to determine the main origin (autochtonous and allochtonous) and the relative importance of different fractions of particulate matter and to follow their fate in the environment. To quantify the autochtonous origin of particulate matter, primary production, nutrient uptake, biomass distribution, phytoplankton community structure and fluxes in the first levels of the trophic chain will be investigated. Studies will be conducted in the sea-ice environment and in the water column and compared to the particle fluxes measured both in the water, using sediment traps and in the sediment, by radiometric chronology, in order to estimate the different contribution of these habitats to carbon export to the bottom. The zooplankton will be identified and counted and primary production, nutrient uptake and phytoplankton dynamics will be related to hydrological structure and nutrient availability in the environment. The Kongsfjord results particularly suitable for the main objective of this research as it is influenced by important inputs of both atmospheric (eolic and meteroric) and glacial origin and is characterised by a complex hydrological situation which may promote autochtonous productive processes, thus determining important particulate fluxes.