@INPROCEEDINGS{BeClCr04,
  author = {Berkels, Benjamin and Clarenz, Ulrich and Crewell, Susanne and L\"ohnert,
	Ulrich and Rumpf, Martin and Simmer, Clemens},
  title = {A physical temperatur profiling method using gradient flows},
  booktitle = {Microwave Radiometry and Remote Sensing Applications, Feb. 2004,
	Rome, Italy},
  year = {2004},
  abstract = {The radiative transfer equation is the basis for the determination
	of temperature profiles via measuring microwave intensities at the
	ground. We present a novel and fast numerical technique to derive
	temperature profiles from microwave frequencies located at the wing
	of the 60 GHz oxygen absorption complex. Here we describe a new mathematical
	approach for a T-retrieval, which in contrast to many other retrieval
	methods, does not rely on statistical data sets, thus can be characterized
	as purely physical.},
  pdf = {http://numod.ins.uni-bonn.de/research/papers/public/BeClCr04.pdf},
  issn = {1824-2383}
}