Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Klaus F. Künzi"'
Autor:
Klaus Pfeilsticker, Gabriele Stiller, Martin Riese, Thomas Wagner, Ulrich Platt, Herbert Fischer, Klaus F. Künzi, John P. Burrows, Andreas Richter
Publikováno v:
Chemie in unserer Zeit. 41:170-191
In der Zeit des globalen Wandels stellt die Untersuchung der Erdatmosphare eine grose Herausforderung dar. Zum einen werden fur belastbare Wettervorhersagen standig meteorologische Parameter benotigt. Zum anderen ist der durch naturliche und menschli
Autor:
Christian von Savigny, Mathias Palm, Otto Schrems, John P. Burrows, Thorsten Warneke, Voltaire A. Velazco, Klaus F. Künzi, Justus Notholt
Publikováno v:
Atmospheric Chemistry and Physics. 5:2091-2098
Ozone profiles retrieved from limb scattering measurements of the SCIAMACHY instrument based on the satellite ENVISAT are compared to ground-based low altitude resolution remote sensors. All profiles are retrieved using optimal estimation. Following
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 2:40-44
The effects of cloud structures on microwave radiances at frequencies from 89-190 GHz are investigated by simulations using the Goddard cumulus ensemble model data as input for a radiative transfer model. It was found that the brightness temperatures
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 2:18-22
The common method to detect deep convective clouds is from satellite infrared (IR) measurements, which is based on thresholds of cloud-top temperatures. However, thick cirrus clouds with high cloud tops are difficult to screen out using IR methods, r
Autor:
H. Küllmann, Miriam Sinnhuber, Björn-Martin Sinnhuber, Klaus F. Künzi, A. Kleinböhl, Justus Notholt, Jayanarayanan Kuttippurath
Publikováno v:
Atmospheric Chemistry and Physics, Vol 5, Iss 5, Pp 1291-1299 (2005)
We present observations of unusually high values of ozone and N2O in the middle stratosphere that were observed by the airborne submillimeter radiometer ASUR in the Arctic. The observations took place in the meteorological situation of a major strato
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 74:545-562
Absolute absorption rates of pure water vapor and mixtures of water vapor and nitrogen have been measured in the laboratory at 350 GHz . The dependence on pressure and temperature has been obtained. Additionally, a water vapor continuum parameter est
Publikováno v:
Advances in Space Research. 29:1719-1723
The University of Bremen (Germany) operates a microwave radiometer for the detection of stratospheric chlorine monoxide at 204 GHz, ozone at 142 GHz and water vapor at 22 GHz. The radiometer for atmospheric measurements (RAM) is located at the primar
Publikováno v:
Scopus-Elsevier
In polar regions, satellite microwave radiometry has not been successful in measuring the total water vapor (TWV) in the atmosphere. The difficulties faced in these regions arise from the very low water vapor burden of the atmosphere and the large an
Autor:
J. de La Noë, A. Karpov, Antti V. Räisänen, M. Wüthrich, B. Barry, U. Klein, Juha Mallat, C. Viguerie, M. Gustafsson, R. Siddans, A. Barcia, Brian N. Ellison, Juan R. Pardo, D. Maier, Klaus F. Künzi, José Cernicharo, W. Amacher, R. Peter, Philippe Ricaud, Philippe Baron, Juan Daniel Gallego, J.T. Louhi, D. N. Matheson, Gerard Beaudin, Niklaus Kämpfer
Publikováno v:
International Journal of Infrared and Millimeter Waves. 22:1555-1575
EMCOR is a heterodyne receiver for the frequency range of 201 to 210 GHz. It has been designed for ground-based measurements of various minor constituents of the stratosphere involved in ozone chemistry. Since the aim was the detection of faint spect
Publikováno v:
ResearcherID
Observations of stratospheric chlorine monoxide (ClO) were performed at the Arctic station of the ‘Network for the detection of Stratospheric Change” (NDSC). A ground based millimeter wave radiometer was routinely operated in Ny-Alesund, Spitsber