printlogo
http://www.ethz.ch/index_EN
Institute for Atmospheric and Climate Science
 
print
  

DROUGHT-CH: WP2 - Analysis of critical drought thresholds and their connection with hydroclimatological variables from long-term observations

News

(31.01.2014): Congratulations to Benoit Guillod, who successfully defended his PhD thesis!

ETH (30.01.2014): Prof. Sonia Seneviratne is awarded an ERC Consolidator Grant

GEWEX News (11/2013): GEWEX welcomes the new Co-Chairs of the GEWEX Scientific Steering Group (SSG)

(05.08.2013): Prof. Sonia Seneviratne receives the James B. Macelwane Medal of the American Geophysical Union (AGU web site; EOS announcement)

(07.05.2013): Congratulations to Rene Orth, who successfully defended his PhD thesis!

ETH annual report (12/2012): Our research cited in the 2012 ETH annual report

ETH Life (07.12.2012): Neue Professoren an der ETH Zürich

ETH Life (07.12.2012): New professors at the ETH Zurich appointed

(23.11.2012): Congratulations to Ruth Lorenz, who successfully defended her PhD thesis!

WCRP 4th reanalysis meeting (09.05.2012): Brigitte Mueller makes presentation as EGU young ambassador [EGU ambassadors]

(27.01.2012): Congratulations to Brigitte Mueller, who successfully defended her PhD thesis!

IPCC SREX Summary for Policymakers (18.11.2011): Release of IPCC SREX Summary for Policymakers; Core writing team; Video

(02.11.2011): Congratulations to Heidi Mittelbach, who successfully defended her PhD thesis!

(12.10.2011): Congratulations to Paulo Oliveira who successfully defended his PhD thesis!

(18.09.2009): Congratulations to Eric Jäger, who successfully defended his PhD thesis!

Media & Reports

The Economist (08.03.2014): Global warming: Who pressed the pause button?

SRF2 Wissenschaftsmagazin (01.03.2014): Pause beim Klima (podcast 1.3.2014) [German]

Reuters (26.02.2014): Heat extremes increase despite global warming hiatus

Climate Central (26.02.2014): Climate change is increasing extreme heat globally

ETH (30.01.2014): Vier ETH-Forschende ausgezeichnet

RTS Telejournal 19h30 (03.10.2013): Changement climatique en Suisse [French]

RTS Mise au point (22.09.2013): Interview (Fonte des glaciers, GIEC) [French]

The Telegraph (14.11.2012): Droughts steady since 1950s

Nature Geoscience, Research highlights (31.08.2012): Dry heat

NZZ (29.08.2012): Die Crux mit den Extremen

NZZ Online (10.08.2012): Permanente Dürre in den USA?

ETH Life (17.07.2012): Bodenfeuchte und Hitzetage global untersucht; Soil moisture and hot days examined globally

Schweizer Bauer (17.07.2012): Forschung: Längere Trockenheit sagt Hitzewellen voraus

Tages Anzeiger (16.07.2012): ETH-Forscherinnen können Hitzewellen voraussagen

Los Angeles Times (16.07.2012): Dry spells may predict heat waves

ScienceDaily (27.05.2012): More Summer Heatwaves Likely in Europe: Predictability of European Summer Heat from Spring and Winter Rainfall

ETH Klimablog (10.05.2012): IPCC Sonderbericht zu Änderungen in Klimaextremen (IPCC SREX in Kürze)

ETH Life (29.03.2012): IPCC-Sonderbericht zu Klimaextremen; IPCC Special Report on Extreme Events and Disasters

ETH Klimablog (29.03.2012): Rigorose Qualitätskontrollen beim neusten IPCC-Sonderbericht

SciNevNet (28.03.2012): IPCC predicts rise in extreme climate events

Aqua & Gas (03/2012): On ne peut pas définir la sécheresse indépendamment du milieu impacté

Environmental Health Perspectives (01.02.2012): Managing the Risks of Extreme Weather: IPCC Special Report

ETH Globe (12/2011): Ab drei Grad wird's kritisch - Trockenheit und Landwirtschaft

Le Temps (26.11.2011): Vivre au sec, mode d'emploi

ETH Connect (09/2011): Ein Frühwarnsystem für magere Jahre

NFP61 DROUGHT-CH (08.06.2011): Video on DROUGHT-CH project [French; English sub-titles; German sub-titles]

Le Temps (16.05.2011): Mieux prédire les grandes canicules

SF Einstein (05.05.2011): Ein Frühling wie Sommer

SNF Journal Horizonte/Horizons (03/2011): Wenn die Atmosphäre zum Backofen wird ; Mieux prédire les canicules

NZZ (15.12.2010): Dürren bereiten den Boden für Hitzewellen

ETH Life (13.12.2010): Der Boden ist schuld; Soil responsible for heat waves

Nature Geoscience, News and Views (12.12.2010): Extreme heat rooted in dry soils

ETH Globe (11/2010): Vom Klimamodell zum Klimaservice

ETH Life (06.09.2010): Das Wald-Paradoxon bei Hitzewellen; The forest paradox during heatwaves

ETH Life (22.07.2010): Einfluss der Temperatur auf den «CO2-Atem»

Le Temps (22.07.2010): La Suisse doit adopter un système d'alertes sécheresse

3Sat (nano) (15.09.2009): Der Boden schützt uns bald nicht mehr vor Hitze. Die Schweiz durchzieht ihr Land mit Messstationen

ETH Life (22.08.2008): Der Bodenfeuchte auf den Grund gehen

SNF Journal Horizonte/Horizons (12/2008): Ein Klimaschlüssel liegt im Boden; Une clé du climat se cache dans le sol

Overview

The aim of WP2 is the analysis of available long-term measurements/estimates of soil moisture (Rietholzbach catchment, LWF-WSL tensiometer measurements, remote sensing estimates), surface fluxes (SwissFluxnet and FLUXNET sites), streamflow (BAFU), groundwater (BAFU-NAQUA), and meteorological data (MeteoSwiss) in Switzerland and Central Europe with regard to critical drought thresholds, with a focus on soil moisture-climate relationships. Inferences from this work package will be used for the evaluation and improvement of the modelling tools used in WP4 and WP5.

Details

In this work package, we will address the comprehensive analysis of  critical soil moisture thresholds in Switzerland and Central Europe based on existing measurements and datasets. The focus of the analysis will be on Switzerland, but data from other regions in Central Europe will be used to set the results in the perspective of the whole continent. This will be in particular relevant for the analysis of data from differing climate regimes in Switzerland, i.e. Ticino vs. Mittelland.

Among the very few long-term observations of soil moisture available in Switzerland are those from the Rietholzbach catchment (Seneviratne et al. 2009b), which include measurements since 1995. Additional available observations are soil moisture measurements from the new SwissSMEX project (Swiss Soil Moisture Experiment), a collaborative project of ETH Zurich, Agroscope and MeteoSwiss funded by SNF, and long-term tensiometer measurements from the WSL-LWF sites. Other useful observations are flux measurements from Rietholzbach (lysimeter measurements since 1975) and the SwissFluxnet network, records of groundwater levels from the national groundwater observation network NAQUA-QUANT, and maps of snow water equivalent estimations to be derived under WP5. On the continental scale, we will consider soil moisture observations from other measurement locations (REMEDHUS, SMOSREX), remote sensing estimates (e.g. SMOS, AMSR-E, e.g. Andersen et al. 2005), as well as flux measurements from the FLUXNET network (e.g. Teuling et al. 2009a).

The analysis will pay special attention to the identification of critical soil moisture thresholds for evapotranspiration, which play a major role for ecosystem impacts and feedbacks to the atmosphere (e.g. on air temperature during heatwaves). These thresholds are also responsible for discrepancies in the behaviour of current land surface and climate models under dry conditions. This analysis will allow us to define diagnostics for the validation of the models to be used in WP4 and WP5 with regard to soil moisture-climate relationships, and in particular to investigate the drought propagation mechanisms through the different hydrological storage components (snow storage, soil moisture,  groundwater), and their resulting effects on evapotranspiration and streamflow. We will use the existing data basis to relate user-defined drought indicators (WP1) to physical diagnostics, and derive appropriate indicators for the developed drought platform.

Partners

Synergies with on-going projects

 

Wichtiger Hinweis:
Diese Website wird in älteren Versionen von Netscape ohne graphische Elemente dargestellt. Die Funktionalität der Website ist aber trotzdem gewährleistet. Wenn Sie diese Website regelmässig benutzen, empfehlen wir Ihnen, auf Ihrem Computer einen aktuellen Browser zu installieren. Weitere Informationen finden Sie auf
folgender Seite.

Important Note:
The content in this site is accessible to any browser or Internet device, however, some graphics will display correctly only in the newer versions of Netscape. To get the most out of our site we suggest you upgrade to a newer browser.
More information

© 2014 ETH Zurich | Imprint | Disclaimer | 8 June 2011
top