The moon and the sun play an important role in the Earth's tides, but there are several other factors such as the Earth's rotation, the angle of the earth's axis, variations in the distance to the moon and the sun and the angle of their paths.
There are many different expressions describing the various types of ice. Over the years these have changed and been adjusted to form the international Sea-Ice Nomenclature agreed by WMO (World Meteorological Organisation).
The Meteorological research unit carries out research and development in weather forecasting, climate analysis, atmospheric processes and air quality. We work with observational data, meteorological analysis and model development for regional weather forecasting in the Nordic region, as well as …
Welcome to contact us at the meteorological research unit at SMHI.
At visited stations in Kattegatt, Skagerrak and the Sound nutrient concentrations showed normal values for the season. Lower silicate concentrations was found in western and north western Baltic proper. Lower oxygen values compared to normal were found in the bottom water of the Sound. Values …
There are many, often complicated processes that affect changes in sea level, including tides and weather. Globally, sea level has risen during the last century, and continues to rise at an increasing rate.
Long waves have a large wavelength in relation to the depth. The wave height is also low in relation to the wave length. In a long wave the water particles mostly move backwards and forwards with very little up and down movement in relation to the wave’s length. Examples of long waves are tidal …
SMHI carries out real-time observations of oceanographic parameters with tide gauges, buoys and vessels. Data are collected every hour and presented within 30 minutes. Measurement are also conducted with vessels where sevral biogeochemical parameters are acquired.
There are two main species of cyanobacteria in the brackish waters of the Baltic Sea that bloom during the summer and accumulate on the surface. The dominant species are Aphanizomenon flos-aquae and the poisonous Nodularia spumigena. The most common Baltic algae are green but colours differ between …
