Water cycle changes in Czechia: a multi-source water budget perspective

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F24%3A00582162" target="_blank" >RIV/68378289:_____/24:00582162 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41330/24:98648 RIV/00216208:11310/24:10483063

Result on the web

<a href="https://hess.copernicus.org/articles/28/1/2024/" target="_blank" >https://hess.copernicus.org/articles/28/1/2024/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/hess-28-1-2024" target="_blank" >10.5194/hess-28-1-2024</a>

Result language

angličtina

Original language name

Water cycle changes in Czechia: a multi-source water budget perspective

Original language description

The water cycle in Czechia has been observed to be changing in recent years, with precipitation and evapotranspiration rates exhibiting a trend of acceleration. However, the spatial patterns of such changes remain poorly understood due to the heterogeneous network of ground observations. This study relied on multiple state-of-the-art reanalyses and hydrological modeling. Herein, we propose a novel method for benchmarking hydroclimatic data fusion based on water cycle budget closure. We ranked water cycle budget closure of 96 different combinations for precipitation, evapotranspiration, and runoff using CRU TS v4.06, E-OBS, ERA5-Land, mHM, NCEP/NCAR R1, PREC/L, and TerraClimate. Then, we used the best-ranked data to describe changes in the water cycle in Czechia over the last 60 years. We determined that Czechia is undergoing water cycle acceleration, evinced by increased atmospheric water fluxes. However, the increase in annual total precipitation is not as pronounced nor as consistent as evapotranspiration, resulting in an overall decrease in the runoff. Furthermore, non-parametric bootstrapping revealed that only evapotranspiration changes are statistically significant at the annual scale. At higher frequencies, we identified significant spatial heterogeneity when assessing the water cycle budget at a seasonal scale. Interestingly, the most significant temporal changes in Czechia occur during spring, while the spatial pattern of the change in median values stems from summer changes in the water cycle, which are the seasons within the months with statistically significant changes.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

<a href="/en/project/GM22-33266M" target="_blank" >GM22-33266M: Investigation of the Terrestrial HydrologicAl Cycle Acceleration (ITHACA)</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Hydrology and Earth System Sciences

ISSN

1027-5606

e-ISSN

1607-7938

Volume of the periodical

28

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

19

Pages from-to

1-19

UT code for WoS article

001168845000001

EID of the result in the Scopus database

2-s2.0-85183058560