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SMHI has monitored weather and water for more than 100 years. This has poised a gold mine of observations which clearly show that the climate is changing. With climate indicators you can follow how for example how mean temperature, sea levels and days with snow varies over time and if there is Last updated: Oct 27, 2022

The assessment report is the main result from the long-going cooperation of partners within the (Regional Initiative for the Assessment of Climate Change Impacts on Water Resources and Socio-Economic Vulnerability in the Arab Region). It provides a consistent climate change assessment across 21 of Last updated: Feb 22, 2024

example, reducing uncertainties in the atmospheric response to arctic sea ice loss could help constrain regional climate change projections. This was GREENICE’s main objective, but our climate model experiments show that arctic sea ice has a rather limited impact on the northern hemisphere mid Last updated: Nov 21, 2023

To speed up the clean-up operations after an oil discharge at sea or in larger lakes it is important to know where the oil is drifting and where and when it will reach the coast. With Seatrack Web government agencies can easily make forecasts with hourly resolution, and also track the discharge Last updated: Oct 24, 2022

SMHI make measurements and observations in the air, lakes, rivers and sea. It provides large amounts of data on Swedish climate and environment quality checked and stored and then form the basis for collation, analysis and services of various kinds. Last updated: Apr 23, 2014

temperatures than usual. El Niño returns every 4-7 years and remains for about 12-17 months. The name comes from the fishermen on the coast of Peru. El Niño means “little boy”, or “Christ child” in Spanish, since it is originally referred to the warming of the sea that tended to occur around Christmas time Last updated: Mar 20, 2017

  Strong sunlight and calm water – so that the sea surface is stable and doesn’t get mixed – provide good conditions for algal blooms. The algae also need nutrients such as nitrogen and phosphorus. Some types of algae can obtain nitrogen from the air and then only need the addition of phosphorus Last updated: Mar 20, 2017

have started a chain reaction capable of spreading all the way up the food chain to the Caspian seal. The Black Sea and Caspian Sea are quite similar to the Baltic and there is concern about the effects of the comb jelly if it multiplies and spreads in our northern waters. Reproduction The warty comb Last updated: Apr 23, 2014

ocean and climate change One of the main problems addressed by the group is to quantifty and understand the impacts of anthropogenic climate change. For instance, how will the Baltic Sea be affected by a warmer climate or a change in freshwater supply from rivers and precipitation.  Changes in sea-ice Last updated: Nov 14, 2023

  The Baltic Sea is already a sensitive ecosystem. Climate change, for example reducing salinity and increasing temperatures, can have a major impact on the food chain. Researchers into various fields from a number of countries gathered recently for a marine environment conference organised by SMHI Last updated: Mar 20, 2017