Publications and Science News

Transformation of space operations is a megatrend that influences the future and offers business opportunities

A Space Situation Centre should be set up in Finland to ensure that the public authorities have the information they need for making decisions. To make full use of space operations, Finland should have a permanent and consistent national budget for these. These are the conclusions of the final report of a project that studied […]

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Ice crystals in snow look different from different directions – now this can be modelled

Based on measurements carried out at the Finnish Meteorological Institute in Sodankylä, a model has been developed that describes the development of the structures of ice crystals in snow. For example, the shape of the crystals and the microstructure of snow affect the flow of radiation within the snow. Knowledge of the structure and development […]

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New generation satellite observations provide improved information on air pollution in Helsinki

A new research led by researchers at the Space and Earth Observation Centre (FMI-SPACE) shows how satellite-based observations provide new accurate information for monitoring air pollution (in particular nitrogen dioxide, NO2) in the Helsinki region. The results show how commuter traffic strongly affects air quality in the capital region: NO2 concentrations are smaller during the […]

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Thesis: Understanding of snow microstructure benefits the interpretation of remote sensing observations

Leena Leppänen defended her doctoral thesis dealing with the characterization of snow microstructure in order to improve snow water equivalent retrieval from microwave remote sensing observations. Leena Leppänen found that definitions, measurements methods and physical snow models for snow microstructure need improving. Improved microwave emission models would benefit snow water equivalent retrievals from remote sensing […]

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Microwave transmissivity of frozen trees has a significant effect to interpreting satellite observations

Space and Earth Observation Centre (FMI-SPACE) scientists Leena Leppänen, Juho Vehviläinen, Anna Kontu, Juha Lemmetyinen and Jouni Pulliainen together with Richard Kelly and Qinghuan Li from the University of Waterloo, Canada, found how to enable the improvement of interpreting microwave satellite observations. Microwave transmissivity of frozen trees changes with temperature hampering the interpretation. The results […]

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New software tool to investigate the Martian climate

Analysis of the Martian atmosphere was made possible by the development of a new software tool. The tool efficiently manages the comparison of a 1D atmospheric model to the huge amount of data from remote sensing observations made by the spacecraft orbiting Mars. FMI-SPACE and University of Helsinki scientists introduce a new application software that […]

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FMI-SPACE snow research articles published in a special issue

The special issue of the Geophysica-journal contains information on the Finnish snow expertise the whole society benefits from. In unpopulated areas, for example, automated continuous snow observations are important for weather prediction, climate modelling and interpretation of remote sensing observations. FMI-SPACE researchers Leena Leppänen, Anna Kontu and Jouni Pulliainen have compared the manual and automated […]

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Improved information on melting snow cover in late spring

New investigation provides improved information on snow cover reflectance under the spring melt. The results enable better satellite data-based snow melt monitoring. This assists e.g. hydropower production, flood prevention and meteorology. Finnish Meteorological Institute (FMI) and Finnish Environment Institute (SYKE) investigated the behavior of Sun light reflectance in forested and open landscape. The aim was […]

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New device enables fast observations of snow reflectivity

New device has proven to be useful in snow reflectivity measurements. It’s possible to get direct observations of snow without taking separate snow samples. Snow microstructure affects the reflectivity of infrared radiation from snow. Handheld portable QualitySpec Trek –device utilizes this principle to measure the reflectivity of snow directly from a snowpack. The device was […]

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Matias Takala defended his doctoral thesis successfully

The public debate of climate change is often concentrated on the rise of the average temperature of Earth. Lately also the diminishing glaciers and sea ice on polar regions have gained attention. Snow is an equally important phenomenon of the cryosphere that has not yet gained as much weight as it should. Research scientist Matias […]

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