Operate and further develop the thermometry laboratory (facility for high-precision temperature measurement and calibration), including the realization, calibration, and maintenance of reference thermometers (SPRTs) and fixed-point systems (e.g., the triple point of water, mercury, and other ITS-90 standards) to ensure traceable and accurate temperature measurements, Design, calibrate, and operate high-precision instrumentation for polar observations, including ice-borehole thermometry for recording temperature profiles in polar ice sheets, as well as melt and accumulation sensor networks; implement these systems in the laboratory and deploy and maintain them in polar field environments, Further develop, analyze, and interpret ice-core and related proxy data, acquire new paleoclimate records from polar regions, and integrate paleoclimate information with modern observations for climate reconstruction and interpretation, Apply and further develop theoretical and statistical methods, including inverse methods and uncertainty quantification, to relate modern observations to paleoclimate information, Publish research results in peer-reviewed scientific journals and contribute to international polar research collaborations, Acquire competitive third-party funding, with the long-term goal of securing at least 50 % of a postdoctoral position