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Article
Open AccessRecent Progress in Atmospheric Chemistry Research in China: Establishing a Theoretical Framework for the “Air Pollution Complex”
Atmospheric chemistry research has been growing rapidly in China in the last 25 years since the concept of the “air pollution complex” was first proposed by Professor **aoyan TANG in 1997. For papers published...
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Article
Open AccessLocal troposphere augmentation for real-time precise point positioning
The IGS real-time service (RTS) enables real-time precise point positioning (PPP) at a global scale. A long convergence time however is still a challenging factor. In order to reduce the convergence time, exte...
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Article
Open AccessA study of smoothed TEC precision inferred from GPS measurements
The availability of a large amount of TEC data derived from dual frequency GPS measurements observed by GPS reference networks provides a great opportunity for ionosphere studies. In order to obtain better acc...