@article {jaehne1989a,
	title = {Investigating the transfer process across the free aqueous boundary layer by the controlled flux method},
	journal = {Tellus},
	volume = {41B},
	number = {2},
	year = {1989},
	pages = {177--195},
	abstract = {Theory and experimental results of a new method are described directly investigating the transfer processes across the aqueous viscous boundary layer. The method is based on a known and controllable flux density being applied at the interface. Then the local transfer velocity can be determined by monitoring the tracer concentration at the water surface within minutes. Moreover, the time constant for the transport across the boundary layer ("surface renewal time") can be measured directly. Comparison of the theoretical and measured frequency response of the boundary layer yields significant deviations. The technique is put into operation for heat transfer measurements. Direct comparisons with gas exchange measurements in several wind/wave facilities verify that the gas transfer velocity can be accurately extrapolated from the heat transfer measurements. A new way is opened both for detailed studies of the transfer processes in wind/wave facilities and the urgently needed direct parameterization of the transfer velocity as a function of windshear, wave parameters, and water turbulence in natural systems as rivers, lakes and the ocean. This paper includes (as a first example) measurements on the fetch dependency of the transfer process.},
	doi = {10.1111/j.1600-0889.1989.tb00135.x},
	author = {Bernd J{\"a}hne and P. Libner and Fischer, R. and Thomas Billen and Erich J. Plate}
}
@phdthesis {libner1987,
	title = {Die Konstantflu{\ss}methode: Ein neuartiges, schnelles und lokales Me{\ss}verfahren zur Untersuchung von Austauschvorg{\"a}ngen an der Luft-Wasser Phasengrenze},
	year = {1987},
	publisher = {Institut f{\"u}r Umweltphysik, Fakult{\"a}t f{\"u}r Physik und Astronomie, Univ.\ Heidelberg},
	url = {http://d-nb.info/881465941},
	author = {P. Libner}
}
@article {libner1987a,
	title = {Ein neue Methode zur lokalen und momentanen Bestimmung der Wiederbel{\"u}ftungsraten von Gew{\"a}ssern},
	journal = {Wasserwirtschaft},
	volume = {77},
	number = {5},
	year = {1987},
	pages = {230--235},
	doi = {10.5281/zenodo.13129},
	author = {P. Libner and Bernd J{\"a}hne and Erich J. Plate}
}
@article {jaehne1987b,
	title = {On the parameters influencing air-water gas exchange},
	journal = {J. Geophys. Res.},
	volume = {92},
	year = {1987},
	pages = {1937--1950},
	abstract = {Detailed gas exchange measurements from two circular and one linear wind/wave tunnels are presented. Heat, He, CH4, CO2, Kr, and Xe have been used as tracers. The experiments show the central importance of waves for the water-side transfer process. With the onset of waves the Schmidt number dependence of the transfer velocity k changes from k proportional to Sc^-2/3 to k proportional to Sc^-1/2 indicating a change in the boundary conditions at the surface. Moreover, energy put into the wave field by wind is transferred to near-surface turbulence enhancing gas transfer. The data show that the mean square slope of the waves is the best parameter to characterize the free wavy surface with respect to water-side transfer processes.},
	doi = {10.1029/JC092iC02p01937},
	author = {Bernd J{\"a}hne and K. O. M{\"u}nnich and R. B{\"o}singer and A. Dutzi and Werner A. Huber and P. Libner}
}
@mastersthesis {libner1984,
	title = {Entwicklung eines optische Systems zur Erfassung von Wellenparametern bei Feldmessungen im Hinblick auf den Gasaustausch},
	year = {1984},
	note = {IUP D-189},
	school = {Institut f{\"u}r Umweltphysik, Fakult{\"a}t f{\"u}r Physik und Astronomie, Univ.\ Heidelberg},
	author = {P. Libner}
}
@conference {jaehne1984a,
	title = {Parameterization of air/lake gas exchange},
	booktitle = {Gas transfer at water surfaces},
	year = {1984},
	pages = {469--476},
	publisher = {Reidel},
	organization = {Reidel},
	doi = {10.1007/978-94-017-1660-4_42},
	author = {Bernd J{\"a}hne and K. H. Fischer and Johann Ilmberger and P. Libner and W. Weiss and D. Imboden and U. Lemnin and J. M. Jaquet},
	editor = {W. Brutsaert and G. H. Jirka}
}
