Comparison of soil retention before and after 1950 and comparison of projected and actual changes in the hydrological regime in the Elbe basin

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F21%3A00005190" target="_blank" >RIV/00020711:_____/21:00005190 - isvavai.cz</a>

Result on the web

<a href="https://www.ikse-mkol.org/cz/temata/magdebursky-seminar-o-ochrane-vod/mgs-2021" target="_blank" >https://www.ikse-mkol.org/cz/temata/magdebursky-seminar-o-ochrane-vod/mgs-2021</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Comparison of soil retention before and after 1950 and comparison of projected and actual changes in the hydrological regime in the Elbe basin

Original language description

In the Czech Republic, as in other European countries, there are obvious changes in air temperature and precipitation. In most of the catchment areas, there is evidence of intense warming since 1980. From 1995 to the present, a number of climate scenarios, based first on Global Circulation Models (GCMs), and since 2007 on Regional Circulation Models (RCMs), have been used successively in different projects to estimate the impacts of climate change on runoff from the basin. In their application, different scenarios of long-term emission trends and their corresponding magnitude of warming were used. The scenarios may also differ in the choice of the period from which climate change is considered. Calculations were mostly performed by each of the models used for two alternatives of the projected emission development - optimistic and pessimistic. In the successive projects, different time scales were chosen for which climate change projections and their impact on runoff from the basin were examined. The set of the catchments considered were also different, but they all lay within the Elbe catchment. More than 20 years have elapsed since 1995, when the first calculations using climate change scenarios were used, and now it is possible to compare them with the present. In addition to climate change, the Elbe basin has also been undergoing landscape cover change. In particular, the occurrence of extreme drought in 2015 was often justified by the reduced water retention capacity in the soil. To test whether such a phenomenon has occurred on a large area scale, the BILAN model which simulates the basic processes of hydrological balance, was applied. Calculations were performed on different sections from the period 1851-2016 and the results compared with each other.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10501 - Hydrology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů