Based　on　a　Lagrangian　particle　dispersion　model　FLEXPART　3-D　in　conjunction　with　a　Weather　Research　and　Forecasting　(WRF)　model,　this　study　analyzed　the　synoptic　patterns　of　the　three　sections　(i.e.　front,　center,　and　rear)　of　a　slow-moving　anticyclonic　weather　system　that　took　place　during　April　22-30,　2002　in　northern　China.　The　impacts　of　anticyclone　on　regional　air　quality　were　also　revealed　through　simulating　the　transport　trajectories　of　PM10　particles　in　the　anticyclone.　The　findings　indicate　that　PM10　pollutant　transport　process　within　the　anticyclone　showed　the　following　characteristics:　(a)　the　frontal　pressure　field　played　a　strong　role　in　removing　pollutants　from　a　high　concentration　zone　located　before　the　front,　(b)　the　central　part　of　anticyclone　with　an　evident　isobaric　pressure　field　tended　to　create　a　pollutant　accumulation　process,　and　(c)　the　rear　of　the　anticyclone　system　with　a　southerly　warmer　advection　in　the　pressure　gradient　zone　formed　a　stable　channel　for　transporting　pollutants.　By　using　air　pressure　data　and　PM10　concentration　measurements,　the　quantitative　relationship　between　pressure　variability　and　PK　variation　in　different　sections　of　the　anticyclone　was　established.　A　linear　relationship　was　assumed　between　PM10　variation　per　unit　area　in　the　mixing　layer　and　pressure　variation　within　a　time　interval,　and　different　sections　of　the　anticyclone　were　associated　with　different　linear　regression　equations.　A　parameter　called　PM10　variation　rate　was　then　put　forward,　which　could　be　easily　applied　for　regional　air　pollution　control　and　management.　(C)　2011　Elsevier　Ltd.　All　rights　reserved.