February 2024

Atmospheric models vary in their capability to predict the formation of aerosols from forest emissions

The University of Eastern Finland, the Finnish Meteorological Institute and the University of Helsinki participated in a study where the capability of Earth System Models (ESMs) to simulate the impact of biogenic aerosols on cloud properties was analyzed. We used two long-term observational datasets from boreal and tropical forests, together with satellite data, to evaluate […]

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Spaceborne lidars are the best tool to monitor long-range-transported smoke

In May–June 2019, smoke plumes from wildfires in Canada were advected all the way (across North America and the North Atlantic) to Europe. Scientists from the Finnish Meteorological Institute analyzed the aerosol mass concentrations over North America and Europe, and found that less than one-tenth of the emitted mass survived the transport over the Atlantic

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The jump in global temperatures in September 2023 is very difficult to explain by natural climate variability alone

In September 2023, global temperatures reached to a record-breaking 0.93°C above the 1991-2020 average, surpassing the previous September record by a staggering 0.5°C. Published in npj Climate and Atmospheric Science, scientists from the Finnish Meteorological Institute found that this anomaly was extremely rare event in climate models, occurring in about once in a hundred simulations. Therefore, climate change and internal climate variability

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