Abstract: Geographic information system (GIS) can’t deal with meteorological data directly due to the
shortage of necessary meteorological symbol library currently. Therefore, this article analyzes the
characteristics of commonly used meteorological symbols and logically classifies the symbols into three
types (symbol based on point, symbol based on line, symbol based on area) considering the professional
criterion as well as the meteorological application. Then the corresponding spatial geometry models and
symbol styles are also constructed to build the meteorological symbol library in the form of the
“geometry+style”. All the meteorological symbols in the library are drawn successfully based on GDI+,
and packaged as drawing library for GIS usage. The meteorological symbol library constructed in this
paper provides support for the presentation and analysis of the meteorological information based on GIS.