Publications and Science News

Improved estimation of snow mass by using spatially and temporally varying snow density

A new study found that the state-of-the-art GlobSnow v3.0 snow mass estimates can be further improved by using dynamic snow densities. Information about snow water equivalent (SWE) is needed in many applications, including forecasting freshwater availability and flooding. Historical time series of SWE can also be used in climate model evaluation. A new study evaluated […]

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Satellite-based flood maps of the Finnish Flood Centre provide up-to-date information on flood extent

Satellite images can be utilized for near real-time mapping of floods in wide areas cost efficiently. New research shows that Finnish Flood Centre’s Flood Detection Algorithm works better in the Finnish environment when compared with other available satellite-based products. Methods for satellite-based flood detection have been developed in the Finnish Meteorological Institute for almost 10 […]

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New GlobSnow dataset provides gridded daily Northern Hemisphere snow mass

A recent publication in Scientific Data provides a detailed description of the product and the GlobSnow methodology. Access the paper full-text version here: https://rdcu.be/cnyaU The GlobSnow v3.0 dataset provides a state-of-the-art estimation of the hemispheric snow mass containing daily, monthly, and monthly bias-corrected snow water equivalent (SWE) at the nominal resolution of 25 km x […]

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New wind data for Mars

Researchers at FMI have decoded images of scattered spacecraft parachutes and heat shields to provide new wind data for Mars. To do this they used simulations of spacecraft landings in conjunction with a machine learning algorithm to infer the winds responsible for scattering the hardware. The work has provided wind data in a region of […]

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Measurement campaign studies the effect of solar UV radiation on airborne transmission of viruses in outdoor air

Reasons for seasonality of virus epidemics are still unknown. In Sodankylä, a campaign aims to study the role of solar ultraviolet radiation in virus infectivity. The campaign aims to provide new information about virus transmission in outdoor air and to find explanations to the seasonality of virus epidemics: Why virus pandemics seem to be less […]

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Emissions from Eastern Russian oil fields detected from space

Nitrogen oxide (NOx) and methane (CH4) emissions over Tas-Yuryakh and Talakan oil fields in Sakha Republic (Eastern Siberia, Russia) have been estimated using multi-satellite observations. The emissions are linked to oil production and associated gas flaring activities. Crude oil production activities and associated gas flaring are responsible for significant air polluting and greenhouse gas (GHG) […]

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Otto Lamminpää: JPL Postdoctoral Program and life in California

Research scientist Otto Lamminpää’s recent doctoral dissertation research on atmospheric remote sensing of greenhouse gases led to a postdoctoral position at the NASA Jet Propulsion Laboratory. Read his interview here below: In his dissertation, while still working at the Finnish Meteorological Institute (FMI), Otto Lamminpää developed and implemented rigorous, robust and computationally efficient means of […]

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Doctoral dissertation: Near real time 3D imaging of the ionosphere

In his dissertation, Johannes Norberg, a researcher at the Finnish Meteorological Institute, developed a computationally efficient method for imaging the Earth’s ionosphere. The ionosphere is the partly ionised region of the Earth’s atmosphere. It starts at an altitude of about 60 kilometers and reaches up to 1,000 kilometers. It has a significant effect for HF […]

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Snow samplers were compared to define instrumental bias

Nine different snow water equivalent (SWE) measurement devices we compared in a field campaign organized at the Arctic Space Centre in Sodankylä. Comparison of the different instruments suggests an uncertainty level of around 10 percent. SWE is an important parameter for flood forecasting and water management. Traditionally, different devices based on weighing a snow sample […]

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Doctoral dissertation research led to a new satellite-based flood mapping product

In his dissertation, Juval Cohen, a research scientist at the Finnish Meteorological Institute, studied the effect of forest canopy on satellite observations in the northern boreal forest region. Based on the results of the thesis, a first operational satellite-based flood mapping product used at the Finnish Flood Center was developed. The product can detect floods […]

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