Hygrometer Intercomparison Campaign at Sodankyl

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• Hygrometer Intercomparison Campaign at Sodankylä,
  LAUTLOS
• Jan 26-Feb 28, 2004
• Esko Kyrö1, Rigel Kivi1, Juha Karhu1, Timo
  Turunen1, Tuomo Suortti1, Timo Sukuvaara1, Ari
  Paukkunen2, Paul Ruppert3, Rolf Maag3, Thomas
  Brossi3, Ulrich Leiterer4, Tatjana Naebert4,
  Gisela Peters4, Vladimir Yuskov5, Alexander
  Lukyanov5, Alexander Katz5, Sergey Khaikin5,
  Leonid Korshunov5, Daria Vasilyeva5, Holger
  Vömel6, Roland Neuber7, Marion Müller7, Niklaus
  Kämpfer8, Beat Dauber8, Alexander Häfele8,
  Dietrich Feist8

1. Finnish Met. Institute-Arctic Research Centre
, Sodankylä, Finland 2. Vaisala Oyj, Helsinki,
Finland 3. Meteolabor AG, Zürich, Switzerland 4.
German Weather Service, Meteorological
Observatory Lindenberg, Germany 5. Central
Aerological Observatory, Moscow, Russia 6.
University of Colorado, Boulder, USA 7. Alfred
Wegener Institute for Polar and Marine Research,
Potsdam, Germany 8. University of Bern ,
Switzerland
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Vaisala radiosonde RS-80 uses single Humicap
A-polymer or H-polymer (used 1982-1999 at FMI)
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Vaisala RS-90 sonde has dual H-polymer humicap
switching sequentially between heating(de-icing)
and measuring cycles (1999-2004 at FMI).
FN-sonde of Lindenberg Observatory, Germany,
uses slightly modified Vaisala RS-90 and
Lindenbergs own calibration/calculation method
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Vaisala radiosonde RS-92 (2005 gt at FMI).
Humicap-H unit in the sensorboom is the same as
in RS-90. Developments in sensor technology, in
ground preparation of Humicap, calibration and
computation procedures of Humicap, and code
correlating GPS Wind finding. All digital.
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Peltier cooled dew/frostpoint mirror hygrometer
Snow White of Meteolabor AG, Switzerland. The
mirror and sondepackage.
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Cryogen cooled Fostpoint mirror Hygrometer (CFH)
of Colorado University The mirror, control board
and sonde package
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Lyman Alpha hygrometer from Central Aerological
Observatory, FLASH
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MIAWARA, the 22 Ghz travelling microwave
radiometer of University of Bern
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D. Feist, University of Bern
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LAUTLOS Payload configuration
FLASH
RS-80
FN-90 Lindenberg
NOAA
SnowWhite
RS-92
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LAUTLOS water vapor campaign action at Sodankylä,
Jan 26 - Feb 27, 2004
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Typical balloon trajectory
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Tropospheric part of profiles
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Water vapour profiles from the ground to the
mesosphereData from LAUTLOS campaign in
Sodankylä, Feb. 2004
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Profiles of Cryogenic Frostpoint Hygrometer of
NOOA and Lyman-alpha hygrometer of CAO on the
flight of Feb 17. A.Luklyanov