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SYNOP is a program for geographical visualization
of surface weather observations.
Due to limitations of space available on a computer screen
observations are presented by selection of only one
or a few parameters:
- Temperature, Humidity
- MSL Pressure, MSLP Tendency
- Extreme Values, e.g. Max. Gusts, Max. Temperature
- Visibility, Ceiling, Type of Cloud, Significant Weather
- Precipitation, Snow Depths, Duration of Sunshine
Single-parameter presentation increases the amount of non-overlapping
observations significantly. Nevertheless, non-overlapping presentation
causes some stations to be hidden. Weather watch requirements sometimes
make it necessary to accept a certain degree of overlapping in order
to detect signifant weather phenomena. The possibility to change the degree
of overlapping continuously offers the choice between clear and
complete presentation.
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Cloud Types, Central Europe
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Gale Low 'Lore', Northsea
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Maximum Temperatures and Sign. Weather, Europe
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(Click picture for full size)
Apart from basic observations, deduced and problem-specific
parameters can be visualized, e.g.
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- Freezing Level, Level of Snowfall,
- GAFOR Codes, referred to Reference Level
- Color State Presentation of Visibility and Ceiling
- Lifting Condensation Level,
- Windchill Temperature, Sultriness
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GAFOR Categories Germany
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In addition to the presentation of single parameters, the complete
observation of of each station can be shown in alphanumeric
form or as WMO station symbol by a simple mouse button click.
As it is sometimes difficult to find a desired station,
a special Search function is available which also allows to
show stations according to a specific filter one after another.
The Hitlist Hi / Lo function allows a special non-overlapping
presentation in ascending / descending order. This prevents the
suppression of significant stations by less significant stations.
Sorted Hi, a ww=95 TS cannot be suppressed by a ww=51 drizzle, which
could happen in unsorted presentation.
These data are also shown in an alphanumeric list which can be
saved as file or printed.
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