Assessment of regional climate change impacts on the water cycle in Luxembourg and neighbouring regions

SCHEME: CORE

CALL: 2009

DOMAIN: SR - Sustainable Management of Water Resources

FIRST NAME: Klaus

LAST NAME: Görgen

INDUSTRY PARTNERSHIP / PPP: No

INDUSTRY / PPP PARTNER:

HOST INSTITUTION: LIST

KEYWORDS: regional climate change, water cycle, boundary layer meteorology, energy balance, climate modelling, WRF, Saar-Lor-Lux

START: 2010-05-01

END: 2012-04-30

WEBSITE: https://www.list.lu/

Submitted Abstract

The general objective of the present research project is the assessment of regional climate change impacts on the water cycle in Luxembourg and neighbouring areas. The project has two main research topics and associated themes:1. A comprehensive regional climate change assessment with a focus on hydrometeorology forms the baseline of the project as existing climate change studies for Luxembourg and its vicinity rely either on limited datasets or have a scope mainly on hydrological responses. We plan to mainly use existing regional climate model (RCM) data from the ENSEMBLES project in this first part of the study. The ensemble of available 18 model runs allows for a quantification of the uncertainties inherent in the derived climate diagnostics.2. RCMs with common resolutions of e.g. 25 km in the long transient ENSEMBLES climate change simulations do not explicitly capture the effects of small-scale surface heterogeneity. Vegetation and soil properties and the associated interactions (momentum, energy and water vapour transfers) cannot be captured well by the sub-grid-scale parameterisations. Very high-resolution (around 1 km) longer RCM simulations that provide a possibility to capture specific local impacts of climate change are still very rare. To close this gap, produce reference data for the third research theme, and have improved model results (e.g. summertime precipitation) for a variety of uses by fellow researches and stakeholders alike, we intend to set up a multi-model dynamical downscaling framework where we run two RCMs down to resolutions of 1 km for time slices of validation, control and future time spans for the “Grande Région” and Luxembourg. Water cycle processes simulation should improve (precipitation, evapotranspiration (ET), interception, runoff, soil water, ground water recharge)

This site uses cookies. By continuing to use this site, you agree to the use of cookies for analytics purposes. Find out more in our Privacy Statement