000838694 001__ 838694 000838694 005__ 20240712101020.0 000838694 0247_ $$2doi$$a10.5194/acp-17-12495-2017 000838694 0247_ $$2ISSN$$a1680-7316 000838694 0247_ $$2ISSN$$a1680-7324 000838694 0247_ $$2Handle$$a2128/15730 000838694 0247_ $$2WOS$$aWOS:000413413800001 000838694 0247_ $$2altmetric$$aaltmetric:27815045 000838694 037__ $$aFZJ-2017-07255 000838694 082__ $$a550 000838694 1001_ $$0P:(DE-Juel1)166303$$aBerkes, Florian$$b0$$eCorresponding author 000838694 245__ $$aIn situ temperature measurements in the upper troposphere and lowermost stratosphere from 2 decades of IAGOS long-term routine observation 000838694 260__ $$aKatlenburg-Lindau$$bEGU$$c2017 000838694 3367_ $$2DRIVER$$aarticle 000838694 3367_ $$2DataCite$$aOutput Types/Journal article 000838694 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1515491309_19491 000838694 3367_ $$2BibTeX$$aARTICLE 000838694 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000838694 3367_ $$00$$2EndNote$$aJournal Article 000838694 520__ $$aDespite several studies on temperature trends in the tropopause region, a comprehensive understanding of the evolution of temperatures in this climate-sensitive region of the atmosphere remains elusive. Here we present a unique global-scale, long-term data set of high-resolution in situ temperature data measured aboard passenger aircraft within the European Research Infrastructure IAGOS (In-service Aircraft for a Global Observing System; http://www.iagos.org). This data set is used to investigate temperature trends within the global upper troposphere and lowermost stratosphere (UTLS, < 13 km) for the period of 1995–2012 in different geographical regions and vertical layers of the UTLS. The largest number of observations is available over the North Atlantic. Here, a neutral temperature trend is found within the lowermost stratosphere. This contradicts the temperature trend in the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim reanalysis, in which a significant (95 % confidence) temperature increase of +0.56 K decade−1 is found. Differences between trends derived from observations and reanalysis data can be traced back to changes in the temperature difference between observation and model data over the period studied. This study underpins the value of the IAGOS temperature observations as an anchor point for the evaluation of reanalyses and its suitability for independent trend analyses. 000838694 536__ $$0G:(DE-HGF)POF3-243$$a243 - Tropospheric trace substances and their transformation processes (POF3-243)$$cPOF3-243$$fPOF III$$x0 000838694 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x1 000838694 588__ $$aDataset connected to CrossRef 000838694 7001_ $$0P:(DE-Juel1)161340$$aNeis, Patrick$$b1$$ufzj 000838694 7001_ $$0P:(DE-Juel1)6952$$aSchultz, Martin G.$$b2 000838694 7001_ $$0P:(DE-Juel1)159541$$aBundke, Ulrich$$b3 000838694 7001_ $$0P:(DE-Juel1)129146$$aRohs, Susanne$$b4$$ufzj 000838694 7001_ $$0P:(DE-Juel1)16203$$aSmit, Herman G.J.$$b5$$ufzj 000838694 7001_ $$0P:(DE-Juel1)16324$$aWahner, Andreas$$b6 000838694 7001_ $$0P:(DE-Juel1)129130$$aKonopka, Paul$$b7$$ufzj 000838694 7001_ $$0P:(DE-HGF)0$$aBoulanger, Damien$$b8 000838694 7001_ $$0P:(DE-HGF)0$$aNédélec, Philippe$$b9 000838694 7001_ $$0P:(DE-HGF)0$$aThouret, Valerie$$b10 000838694 7001_ $$0P:(DE-Juel1)136669$$aPetzold, Andreas$$b11 000838694 773__ $$0PERI:(DE-600)2069847-1$$a10.5194/acp-17-12495-2017$$gVol. 17, no. 20, p. 12495 - 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