Trajectories on the net!
From the web sites of NILU and EMEP you now have access to air-mass trajectories arriving at approx. 35 monitoring sites. The trajectories are currently available from 1996 to present and are updated every day (at night) lagging 2 days behind the present time.
The trajectories are calculated for four arrival times per day (0, 6, 12 and 18 UTC) and for three vertical levels. Presently only graphic plots are available. ASCII text files with the 3-D trajectory coordinates will soon be made available.
This is the first stage of a trajectory support from NILU/EMEP-CCC. A revised trajectory data set with a substantially increased number of arrival sites including all EMEP stations and other global sites is planned during 2005. Additional software tools are also planned.