temperaturkarta

A temperaturkarta is a map that shows how temperature varies across a geographic area. It typically represents surface air temperature, such as the temperature near the ground or at a standard height like two meters above the surface, and can display current conditions, recent history, or forecast temperatures. The map usually uses color shading or contour lines (isotherms) to indicate temperature values.

Data for temperaturkartor come from a combination of weather stations, ships, buoys, radiosondes, and satellite observations. The observations are quality controlled and then interpolated or gridded to form a continuous temperature field or are drawn with isotherms to connect points of equal temperature. In modern products, temperature fields are stored as gridded data (for example in netCDF or GRIB formats) and displayed as raster images or interactive layers.

Presentation methods include isolines that connect equal temperatures and color scales that progress from cool to warm. Some maps show daily maximum or minimum temperatures, while others depict anomalies relative to a climatological baseline. The choice of scale, resolution, and time frame affects how the information is perceived and used.

Applications and significance include weather forecasting, climate monitoring, agricultural planning, energy demand estimation, and urban planning. Temperaturkartor help identify fronts, heat patterns, and regional variations, and they are used in education and media to communicate atmospheric conditions.

Limitations involve data density and distribution, especially in sparsely monitored regions; interpolation can introduce artifacts; biases from urban heat islands or instrument changes can affect accuracy; and the effective resolution may obscure local microclimates.