## 5 Conclusions
AOD from AERONET network at Ittoqqrotoomitt in March 2014, level 1.5 (left) and level 2 (right) (source: NASA, [[https://aeronet.gsfc.nasa.gov/](https://aeronet.gsfc.nasa.gov/)]([https://aeronet.gsfc.nasa.gov/](https://aeronet.gsfc.nasa.gov/))); Figure S14. Mean sea surface temperature in March 2014 (source: NASA [[https://worldview.earthdata.nasa.gov](https://worldview.earthdata.nasa.gov)]([https://worldview.earthdata.nasa.gov](https://worldview.earthdata.nasa.gov))); Figure S15. Cross sections of CHIMERE dust concentrations (right) for several orbits zoomed over the highest values area versus the corresponding CALIPSO qualitative data (left) showing in yellow the dust load and in orange the polluted dust, for the CALIPSO trajectories PAC-1-2 as reported in Figure 2 in the publication. The dotted line represents the height of the boundary layer, the dashed lines represent the fraction of fine dust in percent; Figure S16. Longitudinal cross section of total dust concentrations fields (Altitude versus longitude) at 39.9\({}^{\circ}\) N latitude from 110\({}^{\circ}\) E to 120\({}^{\circ}\) E passing over Beijing (BJ in blue letters) from 12 March 00:00 UTC to 15 March 21:00 UTC. The dotted line represents the height of the boundary layer, the dashed lines represent the fraction of fine dust in percent; Figure S17. Longitudinal cross section of total dust concentrations fields (Altitude versus longitude) at 39.9\({}^{\circ}\) N latitude from 110\({}^{\circ}\) E to 120\({}^{\circ}\) E passing over Beijing (BJ in blue letters) from 16 March 00:00 UTC to 19 March 21:00 UTC. The dotted line represents the height of the boundary layer, the dashed lines represent the fraction of fine dust in percent. **Acknowledgments:** This work is partly funded by the French Ministry in charge of Ecology (MTES). IMPROVE is a collaborative association of state, tribal, and federal agencies, and international partners. US Environmental Protection Agency is the primary funding source, with contracting and research support from the National Park Service. The Air Quality Group at the University of California, Davis is the central analytical laboratory, with ion analysis provided by Research Triangle Institute, and carbon analysis provided by Desert Research Institute. The EBAS database has largely been funded by the UN-ECE CLRTAP (EMEP), AMAP and through NILU internal resources. Specific developments have been possible due to projects like EUSAAR (EU-FP5) (EBAS web interface), EBAS-Online (Norwegian Research Council INFRA) (upgrading of database platform) and HTAP (European Commission DG-ENV) (import and export routines to build a secondary repository in support of www.htap.org). Many specific projects have supported development of data and meta data reporting schemes in dialog with data providers (EU) (CREATE, ACTRIS and others). For a complete list of programmes and projects for which EBAS serves as a database, please consult the information box in the Framework filter of the web interface. These are all highly acknowledged for their support. CALIIPSO data are archived and distributed by the Atmospheric Science Data Center (ASDC) at NASA Langley Research Center that is responsible for the processing, archival, and distribution of NASA Earth science data in the areas of radiation budget, clouds, aerosols, and tropospheric composition. The high-performance computing facility and staff at CCRT/CEA is gratefully acknowledged. We thank also [PERSON] for advising us on the use of US air quality data. We acknowledge the Pyrenean Platform for Observation of the Atmosphere (P2 OA, [http://p2 oa.aero.obs-mip.fr](http://p2 oa.aero.obs-mip.fr)) for the data collected at the Pic du Midi in the frame of the SNO (Service National d' Observation) CLAP supported by the CNRS (Centre National de la Recherche Scientifique). P2 OA facilities and staff are funded and supported by the Observatoire Midi-Pyrenees (University Paul Sabatier, Toulouse, France), and CNRS.