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On the correlation between precipitation and potential evapotranspiration climate change signals for hydrological impact analyses.
- Source :
- Hydrological Sciences Journal/Journal des Sciences Hydrologiques; Apr2019, Vol. 64 Issue 4, p420-433, 14p
- Publication Year :
- 2019
-
Abstract
- State-of-the-art hydrological climate impact assessment involves ensemble approaches to address uncertainties. For precipitation, a wide range of climate model runs is available. However, for particular meteorological variables used for the calculation of potential evapotranspiration (ET<subscript>o</subscript>), availability of climate model runs is limited. It is preferred that climate model runs are considered coupled when calculating changes in precipitation and ET<subscript>o</subscript> amounts, in order to preserve the internal physical consistency. This results in constraints on the maximum ensemble size. In this paper, we investigate the correlation between climate change signals of precipitation and ET<subscript>o</subscript>. It is found that, for two medium-sized catchments in Belgium, uncoupling climate model runs used for calculation of change signals of precipitation and ET<subscript>o</subscript> amounts does not result in a significant bias for changes in extreme flow. With these results, future impact studies can be conducted with larger ensemble sizes, resulting in a more complete uncertainty estimation. [ABSTRACT FROM AUTHOR]
- Subjects :
- CLIMATE change
EVAPOTRANSPIRATION
METEOROLOGICAL precipitation
ATMOSPHERIC models
Subjects
Details
- Language :
- English
- ISSN :
- 02626667
- Volume :
- 64
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Hydrological Sciences Journal/Journal des Sciences Hydrologiques
- Publication Type :
- Academic Journal
- Accession number :
- 135862737
- Full Text :
- https://doi.org/10.1080/02626667.2019.1587615