The infuence of sampling frequency on the study of time variations of hydrographic parameters (1974-1977)
Data set information
| Query EDMED |
|Data holding centre||Swedish Meteorological and Hydrological Institute|
|Time period||1974-08 to 1977-11|
Air pressure; Air temperature; Wind strength and direction; Salinity of the water column; Dissolved total and organic nitrogen concentrations in the water column; Temperature of the water column
The hydrographic conditions in the northern Kattegat were investigated in a 5 year project study called 'The Baltic Entrance Project: the GF Section'. In this study two sampling series at the same location are compared. The sampling frequencies differ by a factor 15. The impact on mean values of salinity and total phosphorus is discussed. The high frequency data are thinned and re-processed. Simulations of low frequency sampling are performed using high frequency data. The choice of sampling occasions and sampling frequency is important since it will influence both short and long term values, especially of surface salinity. The data has been quality controlled.
|Originators||Swedish Meteorological and Hydrological Institute|
Anon (1979) MEDDELANDE FRAN HAVSFISKELABORATORIET LYSEKIL nr 244,, Hydografiska avdelningen Goteborg.
|Data web site||http://www.smhi.se|
|Organisation||Swedish Meteorological and Hydrological Institute|
|Contact||Orjan Back (Shark data manager)|
Swedish Meteorological and Hydrological Institute
|Telephone||+46-31-751 89 75|
|Facsimile||+46-(0)11-495 80 01|
|Collating centre||Swedish Meteorological and Hydrological Institute|