What do the square station plots represent?
The square symbol is reserved for automated stations. An automated report is signalled by either “AUTO”, “ASOS”, or other similar abbreviations in the report, or by the indicator for automated observations in a SYNOP report. squareplot CONTOURING Digital Atmosphere will let me perform one Barnes analysis, but if I try to perform a second Barnes analysis I receive a Range Check error. A couple of bugs in the functions used by the Cressman and Barnes analysis are known to exist. barneserror Upper level height contours don’t work. The computer freezes up. Examine File > Preferences > Analysis > “Figure geostrophic heights”. It is usually checked, which causes heights to be rendered with geostrophic balance. This gives good results but can take a long time on slow computers — for example if you have a 486 it can take several minutes. You can get a quicker height analysis by unchecking this option. slowgeo I performed a contour analysis but no lines appear. In most cases, the contour lines
