EGU2020-17284
https://doi.org/10.5194/egusphere-egu2020-17284
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Validation of reconstructed hydroclimate variables for past drought assessment

Martin Hanel1, Sadaf Nasreen1, Mijael Vargas1, Ujjwal Singh1, Petr Máca1, Oldřich Rakovec1,2, Rohini Kumar1, and Yannis Markonis1
Martin Hanel et al.
  • 1Czech University of Life Sciences, Faculty of Environmental Sciences, Department of Water Resources and Environmental Modelling, Prague, Czechia (hanel@fzp.czu.cz)
  • 2Helmholtz Centre for Environmental Research GmbH - UFZ, Leipzig, Germany

In present paper we compare the reconstructed gridded seasonal precipitation (P) and temperature (T) for Europe [1,2] to the available station data from the GHCN [3,4] network going back to 1800. The basic statistical properties at various time-scales ranging from 1/4 to 30 years are examined. It is shown, that there are significant biases in the reconstructed P and T and the bias in mean and variability considerably vary over the time-scales. The same applies for considered drought indices. We further investigate how the simulation of hydrological model driven by reconstructed data compares to that based on station data and runoff from GRDC database. In addition, a set of data-driven methods is used to link the reconstructed and observed P and T data to observed runoff, the results are validated and a reconstruction back to 1500 is provided. Finally, we check to what extent the raw proxy data can be used for drought reconstruction.

[1] https://doi.org/10.1007/s00382-005-0090-8
[2] https://doi.org/10.1126/science.1093877
[3] https://doi.org/10.1175/JCLI-D-18-0094.1
[4] doi:10.7289/V5X34VDR

How to cite: Hanel, M., Nasreen, S., Vargas, M., Singh, U., Máca, P., Rakovec, O., Kumar, R., and Markonis, Y.: Validation of reconstructed hydroclimate variables for past drought assessment, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-17284, https://doi.org/10.5194/egusphere-egu2020-17284, 2020

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