ENVINET Activities Catalog

ENVINET Activities Catalog

ENVINET (European network for arctic-alpine multidiciplanary environmental research) is a research infrastructure network focusing on multidisciplinary environmental research in Europe. The network involves representatives from 18 environmental research infrastructures from the European Alps to the Arctic, representatives of their users and representatives from relevant international organizations and networks. The participating infrastructures cover a broad range of environmental sciences primarily within atmospheric physics and chemistry as well as marine and terrestrial biology.

The ENVINET project directory covers data and observation activities at these stations.

Other catalogs through this service are AMAP, SAON and SEARCH, or refer to the full list of projects/activities.

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Displaying: 41 - 60 of 383 Next
41. GEOMORPHOCLIM

The aim is a better understanding of the impact of contemporary climatic change (posterior to Little Ice Age) on plant dynamics and the morphodynamic processes active at the glacial margins in polar environments. The selected research field is constituted of the Brøgger Peninsula, where erosion assessments will be evaluated for various processes (frost weathering, runoff, biological weathering, …).

Geology Hydrography Climate change Arctic GIS geomorphology
42. CHIMERPOL

The 2004-2007 scientific research program CHIMERPOL II consists in improving the results obtained during the CHIMERPOL I programme around three main ideas: 1-Understand physico-chemical processes of oxidation of elemental gaseous mercury in the atmosphere during Mercury Depletion Events (MDE) in Corbel, Svalbard from 2004 to 2007 with a continuous monitoring station for gaseous mercury and its speciation, 2-Evaluate deposition and emission fluxes of mercury above the Arctic snow pack by a continuous monitoring of these fluxes in Corbel, Svalbard and in Station Nord, Greenland, from 2005 to 2007. 3-Determine the Air-Snow-Firn-Ice transfer function for mercury and its speciation with a complete balance of mercury in the different compartments in Summit, Greenland from 2006 to 2007.

Ozone Heavy metals Contaminant transport Radionuclides Ice cores Atmosphere
43. PARTICLE COUNTER - METEO STATION CORBEL STATION

This technological program aims to collect permanent informations on local meteorology and aerosols particles at Corbel Station, Svalbard, 6km east of Ny alesund. 78 54 N, 12 07 E Programme 2004 – 2005 April 2004 : Prticmle counter installation and collect datas from meteo Station. Soar cels will be also instlled at the station to power these systems.

Atmospheric processes Climate variability Long-range transport Climate Pollution sources Contaminant transport Climate change Arctic Local pollution Atmosphere
44. Long distance pollen transport in the Arctic: 1. Greenland

The submitted proposal aims to perform the monitoring of the pollen rain in the Greenland atmosphere by distinguishing the local pollen production, relatively low, from pollen grains originating from other Arctic areas. A regular monitoring of the atmospheric pollen content must be performed in order to evaluate the amount emitted and characterise the seasonality of the emission. A comparison with air mass trajectories must allow the modelling of long distance transport

Biology Climate variability Spatial trends Modelling Biodiversity Data management pollen Atmosphere Ecosystems
45. PARTICLE COUNTER - METEO STATION CORBEL STATION

This technological program aims to collect permanent informations on local meteorology and aerosols particles at Corbel Station, Svalbard, 6km east of Ny alesund. 78 54 N, 12 07 E Programme 2004 – 2005 April 2004 : Prticmle counter installation and collect datas from meteo Station. Soar cels will be also instlled at the station to power these systems.

Atmospheric processes Climate variability Long-range transport Climate Pollution sources Contaminant transport Climate change Arctic Local pollution Atmosphere
46. NOx and SO2 samplings - Corbel station

This technological program aims to get a better view of the Corbel site quality (78 54 N, 12 07 E, Svalbard close to Ny Alesunsd) for atmospheric chemistry. Nox and SO2 samplers are deployed on 16 places on a 4 km2 area around the Station (79°N, Svalbard), protected from snowscooters activity. The influence of Ny Alesund village is also studied. Programme 2004 April 2004 : poles installation and samplers deployment on the 16 stations; analysis will be made by CNR.

Atmospheric processes Long-range transport Climate Pollution sources Contaminant transport Climate change Emissions Arctic Local pollution Atmosphere
47. Living in a spatially structured environment: evolutionary ecology of seabird-parasite interactions

The aim of this research program is to examine the response of animal populations to environmental variability at different spatial scales. We attempt to determine how individuals respond to the spatial heterogeneity of their environment, and what are the consequences of this response for the dynamics of subdivided populations. Specifically, we consider an ecological system involving biotic interactions at three levels: seabirds, their tick _Ixodes uriae_, and the microparasite _Borrelia burgdorferi_ sensu lato (Lyme disease agent). Colonies of seabirds represent discrete entities, within and among which parasites can circulate. Our previous work on this system in the norwegian arctic has enable us to show that (1) host dispersal can be affected by local conditions, (2) seabird tick populations are specialised among different host species, namely between sympatric kittiwakes _Rissa tridactyla_ and puffins _Fratercula arctica_, (3) in the kittiwake, females transmit antibodies against _Borrelia burgdorferi_ when their chicks have a high probability to be exposed to the tick vector. We propose to combine different approaches, incorporating field surveys and experiments and population genetic studies (of hosts and parasites), in order to better understand the role of local interactions and dispersal in the dynamics of such a system. The research program implies collaborations with researchers from other french groups, as well as with Canadian (Queen’s University) and Norwegian colleagues (from NINA and the University of Tromsø).

Biology Populations Epidemiology Evolutionary ecology Spatial trends Biodiversity Seabirds Ecosystems
48. Die GPS/GLONASS Permanentstation Sonnblick -ein moderner meteorologischer Sensor

GPS has become an important tool both in navigation and in precise point positioning. One of the nuicance parameters limiting the accuracy of point determination is the water vapor content of the troposphere. On the other hand meteorologists are interested in the wet component of the troposphere as a valuable tool for Numerical Weather Prediction. Therefore GPS offers a low cost monitoring of water vapor with high temporal resolution. We make use of continuous measurements of the GPS/GLONASS reference station network in Austria, which currently consists of about 30 sites with distances ranging from 50 km to 120 km. We calculate the zenith wet delays for a period of 2 months (February and March 2002). Subsequently the results are compared to contributions of different processing centers of the COST-716 project ?Exploitation of Ground Based GPS for Climate and NWP? and with zenith path delay estimates provided by the IGS. As meteorologists need the water vapor within less than two hours, special attention is paid to the availability, reliability and especially to the quality of the satellite orbits used for the network calculations.

GPS Climate Water Vapour GNSS Atmosphere
49. Bacterial growth in cloud droplets

It is well known that the atmosphere is a conveyor of microorganisms, and that bacteria can act as ice or cloud condensation nuclei, but clouds have not been considered as a site where organisms can live and reproduce. We could show that bacteria in cloud droplets collected at high altitudes are actively growing and reproducing at temperatures at or below 0°C. Since ~60% of the earth surface is covered by clouds, cloud water should be considered as a microbial habitat.

bacterial activity Biology cloud droplets Atmosphere Ecosystems supercooled water
50. Tritium as a 'natural' tracer of air masses

It is well known that tritium, the hydrogen isotope 3H, is part of nuclear weapons and was spread all over the world as a consequence of nuclear bomb explosions. Rarely it is regarded as being “natural”, but actually it is. Long time before humans appeared tritium already existed on earth for a long time. This “natural” tritium is the product of cosmic radiation interactions with the atmosphere (mainly N-14). Nowadays this kind of tritium production contributes only to a small extent to the atmospheric tritium. Tritium is radioactive and decays with a half-life of 4.500 days under the emission of a very low energetic beta-particle. In the atmosphere tritium can be found within water vapour (HTO), hydrogen (HT) or methane (CH3T). Yet, the main portion of tritium released during the 1960’s has already been eliminated from the atmosphere by radioactive decay and precipitation. A large amount is captured in the oceans. Indeed, today anthropogenic sources releasing tritium to the environment can still be found. At the end of the 1980‘s contacts with research institutes in former Eastern Bloc countries lead to the idea of establishing a tritium sampling network. The primary goal was the documentation of atmospheric tritium. Statements about potential releases and their sources and the radiation hazards associated should be obtained. Furthermore it might help with the verification of meteorological models. To acquire comparable results a standardised sampling device was developed. This system simultaneously collects samples of air humidity and hydrogen. It was planned to enlist the gathered data in a database and to use them for the following subjects: • observation of local and global tritium transport in the atmosphere • detecting tritium releases and locating their sources • radiation risk evaluation • examining the transmutation of elemental hydrogen into water under natural conditions With the breakdown of the Eastern Bloc the idea of this common network faded away. At the moment only at two stations in Austria air humidity and air hydrogen are collected as planned: since 1991 at Research Center Arsenal in Vienna and since 1999 at Hoher Sonnblick a high mountain station (3160 m). Currently we are working together with the IAEA on a project with the aim to find a model, which helps evaluating weather conditions and in particular the climatic processes. As for these investigations the stable isotopes H-2 and O-18 are used and the currently used device introduces fractionation a new method is developed right now. Since the specific tritium activity concentration is not affected by air pressure or humidity the values for the two locations can be compared directly. In general the measured values are similar but sometimes differ noticeably. For example a peak value for the tritium activity concentration observed during March 2000 at Sonnblick was not noticed in Vienna. In this context the attempt should be made to analyse the air flows with the help of trajectories. The tritium activity concentration of air humidity is primarily determined by the amount of humidity itself. Therefore the concentration is directly linked to the seasons. Only significant changes in the specific tritium activity concentration can be detected by the use of the tritium activity concentration. Seasonal variations within the tritium activity concentration of hydrogen could not be observed. The values vary around 10 mBq/m3.

Atmospheric processes Radioactivity Long-range transport Climate Contaminant transport Radionuclides Modelling Atmosphere
51. Determination of atmospheric fluxes of Radionuclides, Heavy Metals and Persistent Organic pollutants in well defined watershed, lakes and coastal marine sediments of Svalbard from the beginning of nuclear age

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.

Atmospheric processes Biology Hydrography Heavy metals Radioactivity Radionuclides Arctic Persistent organic pollutants (POPs) Sediments Atmosphere Ecosystems
52. Measurement and Modeling the Mercury Depletion Events in the Arctic at the Ny-Ålesund Site

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.

Pathways Atmospheric processes Mercury depletion Emissions Geochemistry Data management Atmosphere Ecosystems
53. Chlorofluorocarbons, Hydrogenated Halocarbons and Degradation Products of the Hydrogenated Halocarbons in the Arctic Environment

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.

Atmospheric processes Ozone Climate Climate change Emissions Atmosphere
54. WADOS (wet and dry only precipitation sampler)

The objectives of the project are the investigation of the ion concentration in the precipitation water as well as the determination of the ion entries belonged by the precipitation water. The temporal variability was described on the one hand on the basis the appropriate yearly variations (saisonality), on the other hand over the long-term behaviour (trend) with heavyweight on the main components (S- and N- connections). Additionally on basis of the data of the further Lands of the Federal Republic the spatial variability for the Austrian federal territory is represented.

Precipitation analytics Heavy metals Climate Forest damage Atmosphere Rain analytics
55. Cloud Effects on UV Irradiance Measurements (CEUVIM)

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.

Atmospheric processes Ozone UV solar radiation UV radiation Climate change Atmosphere Clouds effects
56. Determination of cloud coverage and radiative forcing from surface measurements

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.

effects on surfaces energy fluxes measurement of the radiative surface partition Radioactivity cloud coverage Exposure solar radiation radiative forcing Atmosphere
57. Interactions between meiofauna and mat-forming microbes at the sediment-water interface - implications for benthic-pelagic coupling in coastal systems

The project investigated small-scale biotic interactions between laminated microbial communities and meiofauna at light-exposed sediment-water boundaries of estuarine lagoons. The production and biological structure of these systems is mainly determined by complex processes at the sediment-water interface which depend on finely scaled patterns, requiring appreciation of how the biota interact within these scales. We tested whether changing light conditions and active emergence of the harpacticoid species Mesochra lilljeborgi and Tachidius discipes are mediated by the activity of benthic oxygenic and anoxygenic phototrophic microbes. Two hypotheses were tested which addresses to the question of causality between changing light conditions and active emergence of the harpacticoid copepods. (1)The harpacticoid copepods T. discipes and M. lilljeborgi will enter the bottom water during daylight when oxygenic photosynthesis of cyanobacteria and eukaryotic algae is blocked and conditions at the sediment-water interface have turned anoxic. (2)Both species will not emerge during dark exposures when transferred to sterilized sediments.

Biological effects Biology copepod microbial communities interactions Sediments Ecosystems
58. Life cycle strategies linked to adult development and reproduction in the Northern krill, Meganyctiphanes norvegica. Study of the Gullmarsfjorden population.

To recognize some life cycle strategies linked to adult development and reproduction in the Northern krill, Meganyctiphanes norvegica, in the Gullmarsfjorden population. Sampling of krill and analyses of the distribution of sex, body-size, moult and reproductive development stages.

Biology Meganyctiphanes norvegica krill life cycle
59. Interactions between appendicularian and copepod grazing on dinoflagellate blooms

To be completed.

Biology copepod grazing dinoflagellate blooms Food webs Diet
60. Proximate ecological controls on the swimming behaviour of coastal euphausiids

To examine the way in which light intensity and spectrum affects the swimming behaviour and activity of the pelagic euphausiid Meganyctiphanes norvegica. Our initial objective was to develop a method with this animal where clear behavioural responses could be related to various stimuli. By tethering the animals it was hoped that it would be possible to look at the responses of Meganyctiphanes norvegica to subtle changes in light intensity, of the range they might be expected to experience in their natural habitat. Concomitant with the main objective, animals were sampled over 24 hours to look for the presence of clock proteins and examine the movements of visual pigments. To relate any pigment migration to changes in light intensity that the animals might have experienced in situ, animals were also exposed to known quanta of light and then fixed.

Biology euphausiids swimming behaviour Meganyctiphanes norvegica light intensity pigment