TY  - JOUR
A1  - Engel, Andreas
A1  - Bönisch, Harald
A1  - Brunner, Dominik
A1  - Fischer, Herbert
A1  - Franke, Harald
A1  - Günther, Gebhard
A1  - Gurk, Christian Thomas
A1  - Hegglin, Michaela I.
A1  - Hoor, Peter
A1  - Königstedt, Rainer
A1  - Krebsbach, Michael
A1  - Maser, Rolf
A1  - Parchatka, Uwe
A1  - Peter, Thomas
A1  - Schell, Dieter
A1  - Schiller, Cornelius
A1  - Schmidt, Ulrich
A1  - Spelten, Nicole
A1  - Szabo, T.
A1  - Weers, Uwe
A1  - Wernli, Heini
A1  - Wetter, Thomas
A1  - Wirth, Volkmar
T1  - Highly resolved observations of trace gases in the lowermost stratosphere and upper troposphere from the Spurt project: an overview
T2  - Atmospheric chemistry and physics, 6.2006, S. 283-301
N2  - During SPURT (Spurenstofftransport in der Tropopausenregion, trace gas transport in the tropopause region) we performed measurements of a wide range of trace gases with different lifetimes and sink/source characteristics in the northern hemispheric upper troposphere (UT) and lowermost stratosphere (LMS). A large number of in-situ instruments were deployed on board a Learjet 35A, flying at altitudes up to 13.7 km, at times reaching to nearly 380 K potential temperature. Eight measurement campaigns (consisting of a total of 36 flights), distributed over all seasons and typically covering latitudes between 35° N and 75° N in the European longitude sector (10° W–20° E), were performed. Here we present an overview of the project, describing the instrumentation, the encountered meteorological situations during the campaigns and the data set available from SPURT. Measurements were obtained for N2O, CH4, CO, CO2, CFC12, H2, SF6, NO, NOy, O3 and H2O. We illustrate the strength of this new data set by showing mean distributions of the mixing ratios of selected trace gases, using a potential temperature – equivalent latitude coordinate system. The observations reveal that the LMS is most stratospheric in character during spring, with the highest mixing ratios of O3 and NOy and the lowest mixing ratios of N2O and SF6. The lowest mixing ratios of NOy and O3 are observed during autumn, together with the highest mixing ratios of N2O and SF6 indicating a strong tropospheric influence. For H2O, however, the maximum concentrations in the LMS are found during summer, suggesting unique (temperature- and convection-controlled) conditions for this molecule during transport across the tropopause. The SPURT data set is presently the most accurate and complete data set for many trace species in the LMS, and its main value is the simultaneous measurement of a suite of trace gases having different lifetimes and physical-chemical histories. It is thus very well suited for studies of atmospheric transport, for model validation, and for investigations of seasonal changes in the UT/LMS, as demonstrated in accompanying and elsewhere published studies.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/1674
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-37366
SN  - 1680-7316
SN  - 1680-7324
N1  - © 2006 Author(s). This work is licensed under a Creative Commons License.
VL  - 6
SP  - 283
EP  - 301
PB  - European Geosciences Union
CY  - Katlenburg-Lindau
ER  -