Northern lights over Ny-Ålesund AWIPEV station
(Michael Lonardi, Ny-Ålesund, AWIPEV Station 2021)
Polar 5 off the coast of Longyearbyen from the window of Polar 6
(Johannes Schneider, HALO-(AC)³ 2022)
HALO research aircraft during HALO-[ac3] in Kiruna, Sweden
(Marlen Brückner, HALO-(AC)³ 2022)
DFG approved the funding of the second phase of (AC)³ with 14.5Mio Euro for four years.
(Esther Horvath, MOSAiC 2019; André Ehrlich, ACLOUD 2017)
The Arctic sea ice has declined significantly during the last years.
(Marlen Brückner, PASCAL 2017)
Polar 6 & 5 aircraft at Longyearbyen airport during ACLOUD.
(Tobias Donth, ACLOUD 2017)
Ny-Ålesund radiation measurements at atmospheric observatory.
(Jürgen Graeser, 2013)
Meteorological station including tethered balloon at the ice camp during PASCAL.
(Marlen Brückner, PASCAL 2017)
Polar 5 and Polarstern off Longyeabyen.
(Alfred-Wegener-Institute / Thomas Krumpen, (CC-BY-NC 4.0))
Polar 5 passing by Polarstern during PASCAL and ACLOUD.
(Marlen Brückner, PASCAL/ACLOUD 2017)
Aerial view of Ny-Ålesund in the summer 2012.
(Alfred-Wegener-Institute / Marion Maturilli, 2012)
Ny-Ålesund lidar measurements and northern lights.
(Alfred-Wegener-Institute / René Bürgi, 2015)
The German research vessel Polarstern and the ice camp during PASCAL 2017.
(Peter Gege, ice camp during PASCAL 2017)
17.07.2023 | (AC)³ findings make BAMS cover story
25.05.2023 | State-of-the-art new building for cloud and climate research in Leipzig handed over
15.05.2023 | IRTG Travel Grants Programm – Report ASOF conference, Las Palmas (Wiebke Körtke, Zerlina Hofmann and Finn Heukamp)
05.05.2023 | IRTG Travel Grants Programm – Report Research stay at AWI Potsdam (Alexander Mchedlishvili)
03.05.2023 | IRTG Travel Grants Programm – Report EGU General Assembly, Vienna (Nils Slättberg)
04.09.2023 | (AC)³ Online lesson: “Vertical exchange in the Arctic Ocean”
27.06.2023 - 28.06.2023 | (AC)³ Evaluation of phase III proposal in Cologne
08.05.2023 | (AC)³ Online lesson: “Trace gas and aerosol remote sensing in the infrared spectral region”
03.04.2023 | (AC)³ Online lesson: “Stratospheric Polar Vortex”
12.03.2023 - 18.03.2023 | Winter school on Arctic amplification – the role of clouds (in feedback mechanisms)
The Transregional Collaborative Research Centre TR 172 (AC)³ provides a unique research environment to study the increase of Arctic near-surface temperature during the last decades, which is commonly referred to as Arctic Amplification, from complementary viewpoints, bridging various observations and modelling approaches.
University of Leipzig, as the coordinating University has applied together with the University of Bremen, University of Cologne and the Alfred-Wegener Institute for Polar and Marine Research (AWI), and the Leibniz Insitute for Tropospheric Research (TROPOS) for support of this research project.
The overarching scientific objective of (AC)³ is to identify, investigate, and evaluate the key processes contributing to Arctic Amplification, improve our understanding of the major feedback mechanisms, and quantify their relative importance for Arctic Amplification.
The TR 172 is funded by the Deutsche Forschungsgemeinschaft – DFG.