Preprints
https://doi.org/10.5194/gi-2022-9
https://doi.org/10.5194/gi-2022-9
 
14 Jul 2022
14 Jul 2022
Status: this preprint is currently under review for the journal GI.

The Land-Atmosphere Feedback Observatory: A New Observational Approach for Characterizing Land-Atmosphere Feedback

Florian Späth1, Verena Rajtschan2, Tobias K. D. Weber2, Shehan Morandage2, Diego Lange1, Syed Saqlain Abbas1, Andreas Behrendt1, Joachim Ingwersen2, Thilo Streck2, and Volker Wulfmeyer1 Florian Späth et al.
  • 1University of Hohenheim, Institute of Physics and Meteorology, Stuttgart, Germany
  • 2University of Hohenheim, Institute of Soil Science and Land Evaluation, Stuttgart, Germany

Abstract. Important topics in Land-Atmosphere (L-A) feedback research are water and energy balances and heterogeneities of fluxes at the land-surface and in the atmospheric booundary layer. To target these questions, the Land-Atmosphere Feedback Observatory (LAFO) has been installed in Southwest Germany. The instrumentation allows comprehensive and high-resolution measurements from the bedrock to the lower free troposphere. Grouped in three components: atmosphere, soil and land-surface and vegetation, the LAFO observation strategy aims for simultaneous measurements in all three compartments. For that the LAFO sensor synergy contains lidar systems to measure the atmospheric key variables humidity, temperature and wind. At the land-surface eddy covariance stations operated to record the energy distribution of radiation, sensible, latent and ground heat fluxes. With a water and temperature sensor network the soil water and temperature is monitored in the agricultural investigation area.

The observations in LAFO are organized in operational measurements and intensive observation periods (IOPs). Operational measurements aim for long timeseries dataset to investigate statistics as we present as example the correlation between mixing layer height and surface fluxes. The potential of IOPs is demonstrated with a 24 hour case study with dynamic and thermodynamic profiles with lidar as well as a surface layer observation with the scanning differential absorption lidar to relate atmospheric humidity patterns to soil water structures.

Both long-term observations and IOPs are important for improving the representation of L-A feedbacks in climate and numerical weather prediction models.

Florian Späth et al.

Status: open (until 05 Sep 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on gi-2022-9', Zhuosen Wang, 19 Jul 2022 reply
    • CC2: 'Reply on CC1', Zhuosen Wang, 19 Jul 2022 reply
  • RC1: 'Comment on gi-2022-9', Manuel Helbig, 11 Aug 2022 reply

Florian Späth et al.

Florian Späth et al.

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Short summary
Important topics in Land-Atmosphere feedback research are water and energy balances and heterogeneities of fluxes at the land-surface and in the atmosphere. To target these questions, the Land-Atmosphere Feedback Observatory (LAFO) has been installed in Germany. The instrumentation allows comprehensive measurements from the bedrock to the troposphere. The LAFO observation strategy aims for simultaneous measurements in all three compartments: atmosphere, soil and land-surface and vegetation.