Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 19, issue 9
Articles | Volume 19, issue 9
https://doi.org/10.5194/acp-19-6611-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-6611-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 9
Research article
 | 
17 May 2019
Research article |  | 17 May 2019

Significant decline of mesospheric water vapor at the NDACC site near Bern in the period 2007 to 2018

Martin Lainer, Klemens Hocke, Ellen Eckert, and Niklaus Kämpfer

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Short summary
A middle atmospheric water vapor time series of more than 11 years (April 2007 to May 2018) from the NDACC microwave remote sensing site at Bern (Switzerland) is investigated to estimate the trend by means of a robust multilinear parametric trend model. Between 61 and 72 km altitude a significant decline in water vapor could be detected. The reduction of water vapor maximizes to about −12 % per decade at 72 km altitude.
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