Following a “Memorandum of Understanding” with the World Climate Research Programme (WCRP) of the World Meteorological Organization (WMO), the website  is hosted and maintained by the

SPARC International Programme Office
c/o Deutsches Zentrum für Luft- und Raumfahrt e. V.
German Aerospace Center (DLR)
Institut für Physik der Atmosphäre
Münchener Straße 20
82234 Oberpfaffenhofen


Editorial staff

Dr. Hans Volkert, SPARC-office director
Mareike Kenntner, SPARC coordinating scientist


Legal Statement for Websites operated on behalf of DLR

Imprint according to § 5 TMG (German Act for Telemedia Services) and § 55 Rundfunkstaatsvertrag (German Interstate Treaty on Broadcasting)

Deutsches Zentrum fuer Luft- und Raumfahrt e. V.
German Aerospace Center (DLR)
Linder Hoehe
51147 Koeln (Cologne)

Tel: +49 2203 601-0
Fax: +49 2203 67310

DLR’s Executive Board, consisting of Prof. Dr. Pascale Ehrenfreund (Chair of the Executive Board), Klaus Hamacher (Vice Chairman of the Executive Board), Prof. Rolf Henke, Prof. Dr. rer. nat. Hansjörg Dittus, Prof. Dr.-Ing. Karsten Lemmer and Dr.-Ing. Walther Pelzer is empowered to act as DLR’s representative. The Executive Board’s seat is located at DLR, Executive Board, Linder Hoehe, D-51147 Koeln. The Executive Board can also authorise DLR employees to act on behalf of DLR. The head of DLR’s legal department, Linder Hoehe, 51147 Cologne, can provide information about the extent of this authorisation. Registration court and registration number of DLR: District court of Bonn, VR 2780.

Value added tax identification number: DE 121965658

Responsible in the sense of § 55, 2nd paragraph of Rundfunkstaatsvertrag (German Interstate Treaty on Broadcasting)
Dr. Katrin Simhandl, interim head of the Public Affairs and Communications department, Linder Hoehe, 51147 Koeln, Germany

Stratosphere-Troposphere Processes and their Role in Climate