Redirigiendo al acceso original de articulo en 18 segundos...
Inicio  /  Water  /  Vol: 9 Núm: 4 Par: 0 (2017)  /  Artículo
ARTÍCULO
TITULO

Evaluation of the Water Cycle in the European COSMO-REA6 Reanalysis Using GRACE

Anne Springer    
Annette Eicker    
Anika Bettge    
Jürgen Kusche    
Andreas Hense    

Resumen

Precipitation and evapotranspiration, and in particular the precipitation minus evapotranspiration deficit ( P-E ), are climate variables that may be better represented in reanalyses based on numerical weather prediction (NWP) models than in other datasets. P-E provides essential information on the interaction of the atmosphere with the land surface, which is of fundamental importance for understanding climate change in response to anthropogenic impacts. However, the skill of models in closing the atmospheric-terrestrial water budget is limited. Here, total water storage estimates from the Gravity Recovery and Climate Experiment (GRACE) mission are used in combination with discharge data for assessing the closure of the water budget in the recent high-resolution Consortium for Small-Scale Modelling 6-km Reanalysis (COSMO-REA6) while comparing to global reanalyses (Interim ECMWF Reanalysis (ERA-Interim), Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)) and observation-based datasets (Global Precipitation Climatology Centre (GPCC), Global Land Evaporation Amsterdam Model (GLEAM)). All 26 major European river basins are included in this study and aggregated to 17 catchments. Discharge data are obtained from the Global Runoff Data Centre (GRDC), and insufficiently long time series are extended by calibrating the monthly Génie Rural rainfall-runoff model (GR2M) against the existing discharge observations, subsequently generating consistent model discharge time series for the GRACE period. We find that for most catchments, COSMO-REA6 closes the water budget within the error estimates. In contrast, the global reanalyses underestimate P-E with up to 20 mm/month. For all models and catchments, short-term (below the seasonal timescale) variability of atmospheric terrestrial flux agrees well with GRACE and discharge data with correlations of about 0.6. Our large study area allows identifying regional patterns like negative trends of P-E in eastern Europe and positive trends in northwestern Europe.

 Artículos similares

       
 
Young Hwan Choi and Joong Hoon Kim    
This study compares the performance of self-adaptive optimization approaches in efficient water distribution systems (WDS) design and presents a guide for the selection of the appropriate method employing optimization utilizing the characteristic of each... ver más
Revista: Water

 
Viktoriya Tsyganskaya, Sandro Martinis and Philip Marzahn    
Synthetic Aperture Radar (SAR) is particularly suitable for large-scale mapping of inundations, as this tool allows data acquisition regardless of illumination and weather conditions. Precise information about the flood extent is an essential foundation ... ver más
Revista: Water

 
Minychl G. Dersseh, Aron A. Kibret, Seifu A. Tilahun, Abeyou W. Worqlul, Mamaru A. Moges, Dessalegn C. Dagnew, Wubneh B. Abebe and Assefa M. Melesse    
Water hyacinth is a well-known invasive weed in lakes across the world and harms the aquatic environment. Since 2011, the weed has invaded Lake Tana substantially posing a challenge to the ecosystem services of the lake. The major factors which affect th... ver más
Revista: Water

 
Reza Aghlmand and Ali Abbasi    
Increasing water demands, especially in arid and semi-arid regions, continuously exacerbate groundwater resources as the only reliable water resources in these regions. Groundwater numerical modeling can be considered as an effective tool for sustainable... ver más
Revista: Water

 
Masoud Jafari Shalamzari, Wanchang Zhang, Atefeh Gholami and Zhijie Zhang    
Site selection for runoff harvesting at large scales is a very complex task. It requires inclusion and spatial analysis of a multitude of accurately measured parameters in a time-efficient manner. Compared with direct measurements of runoff, which is tim... ver más
Revista: Water