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The long range atmospheric transport of Polycyclic Aromatic Hydrocarbons (PAHs) from heavily polluted regions to remote areas has been well-known. However, there are limited studies focussing on the Tibetan Plateau (TP). To assess the temporal transport patterns of PAHs and particulate matters (PMs), a ground-based observation program (2008-2011) was conducted in the southeast TP. Relatively high atmospheric concentrations of particulate-PAHs (0.2-5.0 ng m(-3), sum of 15 compounds) and Total suspended Particles (TSP, 4.1-46.7 mu g m(-3)) were observed. Concentrations of particulate-PAHsITSP exhibited seasonality with higher levels in the winter spring season and lower levels in summer. Using the potential source contribution function model, the source region of both particulate-PAHs and particles was attributed to the Indo-Gangetic Plain (IGP), suggesting the co-transport of particulate-PAHs and aerosols. The aerosol incursion, penetrating the Himalayas and reaching the TP was further captured by Moderate Resolution Imaging Spectroradiometer and Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observations. (C) 2015 Elsevier Ltd. All rights reserved.