Water cycle processes and land-atmosphere interactions in multi-scale regional climate change simulations with the WRF atmospheric model over Europe in the context of the WCRP Euro-CORDEX initiative, Report 3
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| Titles: | Main Title: Water cycle processes and land-atmosphere interactions in multi-scale regional climate change simulations with the WRF atmospheric model over Europe in the context of the WCRP Euro-CORDEX initiative, Report 3 Subtitle: Land atmosphere coupling in Euro-CORDEX validation runs |
| Description: | Abstract: Interactions between the land surface and the atmosphere play a fundamental role in the weather and climate system since it highly influences the energy and water cycle. This study investigates summertime land-atmosphere coupling strength in a 15 member subset of the ERA-Interim driven Euro-CORDEX hindcast ensemble (1989-2008) including a validation of the coupling related variables soil moisture and surface energy fluxes of latent (LE) and sensible heat (H). Both for soil moisture and surface fluxes most of the regional climate models (RCM) are able to reproduce reasonable values for the different European climate zones. But also differences for some regions and models are identified, also compared to the FLUXNET surface flux measurements as observational reference. For quantifying coupling strength the H-LE-correlation method has been confirmed as useful and valid for the comparison of different RCMs. One main advantage is the application to standard RCM output variables (H, LE) as well as observations, although long time series of high quality flux measurement data is needed, which is sparse for many regions. For the JJA summer seasons of the 20 years hindcast time period the Euro-CORDEX simulations agree in the large scale patterns, with strong coupling in Southern Europe and weak coupling in Northern Europe, also in agreement with the FLUXNET observations. But also diversity is seen in the ensemble regarding large parts of Central Europe and the model’s coupling strength in general. Compared to the FLUXNET measurements more models tend to overestimate than underestimate coupling strength. Higher model resolution leads to more small scale heterogeneity but not necessarily to a change in the large scale patterns. Diversity in the ensemble can be both explained by the different characteristics of the individual land surface model (LSM) as well as different climate conditions in the models. |
| Citation Advice: | Knist, K., 2014.Water cycle processes and land-atmosphere interactions in multi-scale regional climate change simulations with the WRF atmospheric model over Europe in the context of the WCRP Euro-CORDEX initiative. 3rd PhD Report, Meteorological Institute, University of Bonn, Germany, Bonn, Germany. |
Responsible Party
| Creator: | Sebastian Knist (Author) |
| Publisher: | CRC/TR32 Database (TR32DB) |
| Publication Year: | 2015 |
Topic
| TR32 Topic: | Atmosphere |
| Related Subproject: | C4 |
| Subject: | Keyword: PhD Report |
File Details
| Filename: | Report3_Knist_2014.pdf |
| Data Type: | Text - Text |
| File Size: | 3.8 MB |
| Date: | Available: 20.12.2014 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only. |
| Access Limitations: | For internal use only. |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Report
| Report Date: | 20th of December, 2014 |
| Report Type: | PhD Report |
| Report City: | Bonn, Germany |
| Report Institution: | Meteorological Institute, University of Bonn, Germany |
Metadata Details
| Metadata Creator: | Sebastian Knist |
| Metadata Created: | 12.08.2015 |
| Metadata Last Updated: | 12.08.2015 |
| Subproject: | C4 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Metadata Downloads: | 0 |
| Dataset Downloads: | 2 |
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