We apologize for any inconvenience this may cause. Satellite and ground-based observations confirm that losses of ozone are occurring seasonally, particularly in the springtime polar vortex of the Antarctic stratosphere, leading to what is known as the ozone hole. Also of concern is the more moderate ozone depletion observed in mid-latitudes, where a large portion of the Earth's population resides. In order to map and monitor such problematic phenomena as ozone destruction or global climate change, global long-term measurements of atmospheric trace gases are needed.
Satellites can make a significant contribution.
For this reason, data sets additional to those mentioned above are also being made available. This data exchange uses a dedicated 64 kbps data link established in 1996 between DLR and all NASA DAAC's. This link also enables hourly updating of TOMS real time data to assure fastest access for European users. The data is processed and archived at DFD and can be accessed there. Specific data sets can be selected and transferred through this interface, and here are plans to extend this service to allow users to automatically extract and convert data.