Investigation and quantification of feedback processes between the atmosphere and the soil-vegetation system in a changing climate
Final Report Abstract
In this project the following key findings were achieved: The land surface and atmosphere interact throughout the atmospheric boundary layer, i.e. energy and water fluxes at the surface impact the soil moisture and temperature profiles throughout the atmosphere up to 2000 m height depending on the state of the atmosphere. - Including a crop growth model in a very high resolution (~3 km) regional climate model in Germany impacts the temperature at the order of 1-2K during the growing season, depending on the region. Mostly it improves the results. The signal is in the order of magnitude of current model biases. Therefore it is recommended to further advance the crop model for other crops and investigate the regional dependence of crop parameters and drill dates. - A multiyear record of energy-fluxes and weather data over multiple crops and soils revealed their dependence not only on the weather but also on the crop, crop development stages which vary depending on the year’s weather, and soil moisture. - The observational strategy developed within SABLE (Surface Atmosphere Boundary Layer Experiment) was successfully extended within the international Land-Atmosphere Feedback Experiment (LAFE) in the central United States. - An ensemble of regional climate model simulations is essential to get robust climate change signals. If impact models are forced stand-alone with climate data, they should run an ensemble using multiple regional climate model ensemble members. The number of ensemble members depends on the variable of interest.
Publications
- 2018. A first-of-its-kind multi-model convection permitting ensemble for investigating convective phenomena over Europe and the Mediterranean. Clim. Dyn.
Coppola, E., Sobolowski, S., Pichelli, E., Raffaele, F., Ahrens, B., Anders, I., Ban, N., Bastin, S., Belda, M., Belusic, D., Caldas-Alvarez, A., Margarida Cardoso, R., Davolio, S., Dobler, A., Fernandez, J., Fita Borrell, L., Fumiere, Q., Giorgi, F., Goergen, K., Guettler, I., Halenka, T., Heinzeller, D., Hodnebrog, O., Jacob, D., Kartsios, S., Katragkou, E., Kendon, E., Khodayar, S., Kunstmann, H., Knist, S., Lavín, A., Lind, P., Lorenz, T., Maraun, D., Marelle, L., Van Meijgaard, E., Milovac, J., Myhre, G., Panitz, H.-J., Piazza, M., Raffa, M., Raub, T., Rockel, B., Schär, C., Sieck, K., Soares, P. M. M., Somot, S., Srnec, L., Stocchi, P., Tölle, M., Truhetz, H., Vautard, R., De Vries, H., Warrach-Sagi, K.
(See online at https://doi.org/10.1007/s00382-018-4521-8) - 2013. Evaluating soil water content in a WRF-NOAH downscaling experiment. Journal of Applied Meteorology and Climatology 52, 2312-2327
Greve, P., Warrach-Sagi, K., Wulfmeyer, V.
(See online at https://doi.org/10.1175/JAMC-D-12-0239.1) - 2013. Evaluation of a climate simulation in Europe based on the WRF-NOAH Model System: precipitation in Germany. Climate Dynam. 41, 755-774
Warrach-Sagi, K., Schwitalla, T., Wulfmeyer, V., Bauer, H.-S.
(See online at https://doi.org/10.1007/s00382-013-1727-7) - 2014. Regional climate modeling on European scales: a joint standard evaluation of the EURO-CORDEX RCM ensemble. Geoscientific Model Development 7, 1297-1333
Kotlarski, S., Keuler, K., Christensen, O. B., Colette, A., Déqué, M., Gobiet, A., Goergen, K., Jacob, D., Lüthi, D., Van Meijgaard, E., Nikulin, G., Schär, C., Teichmann, C., Vautard, R., Warrach-Sagi, K., Wulfmeyer, V.
(See online at https://doi.org/10.5194/gmd-7-1297-2014) - 2015. A review of the remote sensing of lower tropospheric thermodynamic profiles and its indispensable role for the understanding and the simulation of water and energy cycles. Reviews of Geophysics 53, 819–895
Wulfmeyer, V., Hardesty, R. M., Turner, D. D., Behrendt, A., Cadeddu, M. P., Di Girolamo, P., Schlüssel, P., Van Baelen, J., Zus, F.
(See online at https://doi.org/10.1002/2014RG000476) - 2015. Threeyear observations of water vapor and energy fluxes over agricultural crops in two regional climates of Southwest Germany. Meteorologische Zeitschrift 24, 39-59
Wizemann, H.-D., Ingwersen, J., Högy, P., Warrach-Sagi, K., Streck, T., Wulfmeyer, V.
(See online at https://doi.org/10.1127/metz/2014/0618) - 2016. 3-D water vapor field in the atmospheric boundary layer observed with scanning differential absorption lidar. Atmospheric Measurement Techniques 9, 1701-1720
Späth, F., Behrendt, A., Muppa, S. K., Metzendorf, S., Riede, A., Wulfmeyer, V.
(See online at https://doi.org/10.5194/amt-9-1701-2016) - 2016. Determination of convective boundary layer entrainment fluxes, dissipation rates, and the molecular destruction of variances: Theoretical description and a strategy for its confirmation with a novel lidar system synergy. Journal of the Atmospheric Sciences 73, 667-692
Wulfmeyer, V., Muppa, S. K., Behrendt, A., Hammann, E., Späth, F., Sorbjan, Z., Turner, D. D., Hardesty, R. M.
(See online at https://doi.org/10.1175/JAS-D-14-0392.1) - 2016. Investigation of PBL schemes combining the WRF model simulations with scanning water vapor differential absorption lidar measurements. Journal of Geophysical Research: Atmospheres 121, 624–649
Milovac, J., Warrach-Sagi, K., Behrendt, A., Späth, F., Ingwersen, J., Wulfmeyer, V.
(See online at https://doi.org/10.1002/2015JD023927) - 2016. Land-atmosphere coupling in EURO- CORDEX evaluation experiments. Journal of Geophysical Research: Atmospheres 122
Knist, S., Goergen, K., Buonomo, E., Christensen, O. B., Colette, A., Cardoso, R. M., Fealy, R., Fernández, J., García-Díez, M., Jacob, D., Kartsios, S., Katragkou, E., Keuler, K., Mayer, S., Van Meijgaard, E., Nikulin, G., Soares, P. M. M., Sobolowski, S., Szepszo, G., Teichmann, C., Vautard, R., Warrach-Sagi, K., Wulfmeyer, V., Simmer, C.
(See online at https://doi.org/10.1002/2016JD025476) - 2018. Coupling the land surface model Noah-MP with the generic crop growth model Gecros: Model description, calibration and validation. Agricultural and Forest Meteorology 262, 322-339
Ingwersen, J., Högy, P., Wizemann, H.-D., Warrach-Sagi, K., Streck, T.
(See online at https://doi.org/10.1016/j.agrformet.2018.06.023) - 2018. Field significance of performance measures in the context of regional climate model evaluation. Part 1: temperature. Theoretical and Applied Climatology 132, 219-237
Ivanov, M., Warrach-Sagi, K., Wulfmeyer, V.
(See online at https://doi.org/10.1007/s00704-017-2100-2)
