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Hourly observations from aerodroms have been used to calculate hourly means of the most important climatological variables. For those varibles showing a marked daily and annual variation isopleth diagrams have been analysed for air temperature, humidity and wind velocity. The results are given for …

By expanding sea level data from 6 Swedish observation stations inte empirical orthogonal functions a very simple picture of the response of the Baltic to atmospheric forcing is obtained. It is found that not less than 65.5 per cent of the total variance is due to a general rise or lowering of the …

A joint Swedish-Finnish sea-ice experiment was performed during March 1977. Measurements in the atmosphere, ice and sea were made during six days onboard the Finnish Research vessel Aranda stationed in the ice field in the Bay of Bothnia. During two days measurements were also carried out from the
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The interest in numerical modeling of the atmospheric boundary layer has grown considerably over the last decade. At SMHI and elsewhere boundary layer models find applicatoions in local forecasting, especially at airports, in air pollution diffusion and dispersion studies and in wind …

Computer programs have been developed for handling of NOAA VHRR digital data. The programs include geometric corrections, presentation of calibration data, derivation of data, variation of grey scales, different presentation forms etc. A SAAB D23 computer has been used for the computations. Line …

Precipitation data on mean values for large areas have been analysed from two points of view. In the first section of this report the data have been looked upon as time series. In the second section they have been regarded as samples from a population.

The reliability of the data is discussed. It …

The frequency distributions of monthly precipitation amounts have been investigated. Data from the period 1931-78 for 262 Swedish and 26 Norwegian stations have been used. The statistical analysis consists of determining the capacity of well-known frequency distribution functions to match the …