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  Passive remote sensing of columnar water vapour content above land surfaces. Part I: Theoretical algorithm development - Part II: Comparison of OVID measurements with radiosonde and DIAL measurements

Bartsch, B., Bakan, S., Ehret, G., Fischer, J., Kästner, M., & Kiemle, C. (1997). Passive remote sensing of columnar water vapour content above land surfaces. Part I: Theoretical algorithm development - Part II: Comparison of OVID measurements with radiosonde and DIAL measurements. Report / Max-Planck-Institut für Meteorologie, 234.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-ECEE-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0009-ED07-5
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1997
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 Creators:
Bartsch, Barbara, Author
Bakan, Stephan1, Author
Ehret, Gerhard, Author
Fischer, Jürgen, Author
Kästner, Martina, Author
Kiemle, Christoph, Author
Affiliations:
1MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_913545              

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 Abstract: Various efforts are currently being made to develop remote sensing techniques for high accuracy
determination of atmospheric columnar water vapour content above land surfaces. Most of those
algorithms are based on radiative transfer calcu lations, however, which have to be verified by
spectral airborne or satellite measurements.
Initial verification of a new algorithm with the aid of airborne spectral data using the spectrometer
OVID (Optical Visible and near Infrared Detector), an airborne water vapour DIAL (Differential
Absorption Lidar), an airc;raft humicap sensor and radiosonde data is performed dUIing a flight
experiment over Southern Germany. This water vapour algorithm is also dedicated to the MERIS
(MEdium Resolution Imaging Spectrometer) in strument on board ESA's satellite ENVISAT
which will be launched 1999.
Spatial water vapour gradients of &120 = 0.1 g/cm2 over a distance of 100 km were resolved by
applying the OVID measurements. The error estimation of the absolute value of the retrieved
water vapour contents poses· some problems due to insufficient additional temporal and spatial
radiosonde data. However, the principal feasibility has been proven

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Language(s): eng - English
 Dates: 1997
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Internal
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Title: Report / Max-Planck-Institut für Meteorologie
  Other : MPI Report
Source Genre: Series
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Publ. Info: Hamburg : Max-Planck-Institut für Meteorologie
Pages: - Volume / Issue: 234 Sequence Number: - Start / End Page: - Identifier: ISSN: 0937-1060
CoNE: https://pure.mpg.de/cone/journals/resource/0937-1060